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84016542 B GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Contents Introduction ...... 2 In Brief ...... 5 Keys, Doors, and Windows . . . . . 34 Seats and Restraints ...... 57 Storage ...... 124 Instruments and Controls ...... 128 Lighting ...... 176 Infotainment System ...... 186 Climate Controls ...... 224 Driving and Operating ...... 234 Vehicle Care ...... 341 Service and Maintenance . . . . . 446 Technical Data ...... 460 Customer Information ...... 465 Reporting Safety Defects ...... 476 OnStar ...... 479 Index ...... 491 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

2 Introduction Introduction This manual describes features that Canadian Vehicle Owners may or may not be on the vehicle because of optional equipment that A French language manual can be was not purchased on the vehicle, obtained from your dealer, at model variants, country www.helminc.com, or from: specifications, features/applications Propriétaires Canadiens that may not be available in your region, or changes subsequent to On peut obtenir un exemplaire de the printing of this owner’s manual. ce guide en français auprès du The names, logos, emblems, concessionnaire ou à l'adresse If the vehicle has the Duramax suivante: slogans, vehicle model names, and diesel engine, see the Duramax vehicle body designs appearing in diesel supplement for additional and Helm, Incorporated this manual including, but not limited specific information on this engine. Attention: Customer Service to, GM, the GM logo, GMC, the 47911 Halyard Drive GMC Truck Emblem, SIERRA, and For an eAssist vehicle, see the Plymouth, MI 48170 DENALI are trademarks and/or Silverado/Sierra eAssist USA service marks of General Motors supplement. LLC, its subsidiaries, affiliates, Refer to the purchase Using this Manual or licensors. documentation relating to your To quickly locate information about For vehicles first sold in Canada, specific vehicle to confirm the features. the vehicle, use the Index in the substitute the name “General back of the manual. It is an Motors of Canada Company” for Keep this manual in the vehicle for alphabetical list of what is in the GMC Division wherever it appears quick reference. manual and the page number where in this manual. it can be found.

Litho in U.S.A. Part No. 84016542 B Second Printing © 2017 General Motors LLC. All Rights Reserved. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Introduction 3 Danger, Warning, and Vehicle Symbol Chart Caution Here are some additional symbols that may be found on the vehicle Warning messages found on vehicle and what they mean. See the labels and in this manual describe features in this manual for hazards and what to do to avoid or information. reduce them. A circle with a slash through it is a : Airbag Readiness Light safety symbol which means “Do 9 { Danger Not,”“Do not do this,” or “Do not let # : Air Conditioning this happen.” ! Danger indicates a hazard with a : Antilock Brake System (ABS) high level of risk which will result Symbols $ : Brake System Warning Light in serious injury or death. " The vehicle has components and : Charging System labels that use symbols instead of I : Cruise Control text. Symbols are shown along with ` : Do Not Puncture { Warning the text describing the operation or information relating to a specific ^ : Do Not Service Warning indicates a hazard that component, control, message, B : Engine Coolant Temperature could result in injury or death. gauge, or indicator. O : Exterior Lamps M : Shown when the owner’s manual has additional instructions _ : Flame/Fire Prohibited Caution or information. . : Fuel Gauge * : Shown when the service + : Fuses Caution indicates a hazard that manual has additional instructions 3 could result in property or vehicle or information. : Headlamp High/Low-Beam damage. Changer 0 : Shown when there is more j : ISOFIX/LATCH System Child information on another page — Restraints “see page.” GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

4 Introduction * : Malfunction Indicator Lamp : : Oil Pressure O : Power / : Remote Vehicle Start > : Seat Belt Reminders 7 : Tire Pressure Monitor d : Traction Control/StabiliTrak a : Under Pressure M : Windshield Washer Fluid GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

In Brief 5 Vehicle Features Fuel (Gasoline - L86 6.2L In Brief Infotainment System ...... 24 Engine) ...... 32 Radio(s) ...... 24 Fuel (Diesel) ...... 32 Instrument Panel Satellite Radio ...... 25 E85 or FlexFuel ...... 32 Portable Audio Devices ...... 25 Engine Oil Life System ...... 32 Instrument Panel ...... 6 Bluetooth ...... 25 Driving for Better Fuel Initial Drive Information Steering Wheel Controls ...... 26 Economy ...... 33 Initial Drive Information ...... 8 Cruise Control ...... 26 Roadside Assistance Remote Keyless Entry (RKE) Driver Information Program ...... 33 System ...... 8 Center (DIC) ...... 27 Remote Vehicle Start ...... 9 Forward Collision Alert (FCA) Door Locks ...... 9 System ...... 27 Windows ...... 10 Forward Automatic Seat Adjustment ...... 11 Braking (FAB) ...... 27 Memory Features ...... 13 Lane Departure Heated and Ventilated Seats . . . 13 Warning (LDW) ...... 28 Head Restraint Adjustment . . . . 14 Lane Keep Assist (LKA) ...... 28 Seat Belts ...... 14 Rear Vision Camera (RVC) . . . . 28 Passenger Sensing System . . . 14 Parking Assist ...... 28 Mirror Adjustment ...... 15 Power Outlets ...... 28 Steering Wheel Adjustment . . . . 16 Universal Remote System . . . . . 29 Throttle and Brake Pedal Sunroof ...... 29 Adjustment ...... 17 Performance and Maintenance Interior Lighting ...... 17 Traction Control/Electronic Exterior Lighting ...... 18 Stability Control ...... 30 Windshield Wiper/Washer ...... 19 Tire Pressure Monitor ...... 31 Climate Controls ...... 20 Fuel (Gasoline - Except Transmission ...... 22 L86 6.2L Engine) ...... 31 Four-Wheel Drive ...... 23 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

6 In Brief Instrument Panel

Uplevel Shown, Base Similar GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

In Brief 7 1. Instrument Panel Illumination Tow/Haul Selector Button (If 0 Pedal Adjust Switch (If 0 Control 182. Equipped). See Tow/Haul Equipped). See Adjustable 0 2. Integrated Trailer Brake Control Mode 271. Throttle and Brake Pedal (ITBC) System (If Equipped). Range Selection Mode (If 0 256. 0 See Towing Equipment 325. Equipped). See Manual Mode 0 0 { Cargo Lamp 183. 3. Exterior Lamp Controls 0 176. 268. X Parking Assist Button (If Fog Lamps 0 181 (If 10. Light Sensor. See Automatic 0 Equipped). See Assistance Equipped). Headlamp System 179. Systems for Parking or Backing 11. Infotainment 0 186. 4. Air Vents 0 231. 0 289. 5. Turn Signal Lever. See Turn 12. Passenger Airbag On-Off Switch (If Equipped) (Out of A Lane Keep Assist (LKA) and Lane-Change Signals (1500 Series) 0 297 (If 0 181. View). See Airbag On-Off Switch 0 84. Equipped). Windshield Wiper/Washer 5 0 130. 13. Heated and Ventilated Front Hill Descent Control Switch Seats 0 65 (If Equipped). (If Equipped). See Hill Descent 6. Favorite Switches (Out of Control (HDC) 0 284. View). See Steering Wheel 14. Power Outlet 110/120V Controls 0 129. Alternating Current (If q Exhaust Brake Switch (If Equipped). See Power Outlets Equipped). See Exhaust Volume Switches (Out of View). 0 “ 133. Brake in the Duramax diesel See Steering Wheel Controls ” 0 supplement. 0 129. 15. Power Outlets 133 (If Equipped). 7. Instrument Cluster 0 138. g Power Take Off (PTO) 16. USB Port 0 197 (If Equipped). Switch (If Equipped). See the 8. Hazard Warning Flashers Duramax diesel supplement. 0 180. 17. g Traction Control/Electronic Stability Control 0 282. 9. Shift Lever. See Automatic Transmission 0 265. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

8 In Brief Auxiliary Button (If Equipped). 22. Steering Wheel Adjustment Initial Drive See Add-On Electrical 0 129 (Out of View). 0 Equipment 336. 23. Cruise Control 0 285. Information j Power Assist Steps 0 43 (If Heated Steering Wheel 0 130 This section provides a brief Equipped). (If Equipped). overview about some of the important features that may or may 18. Dual Automatic Climate Control Forward Collision Alert (FCA) not be on your specific vehicle. System 0 228 (If Equipped). System 0 292 (If Equipped). For more detailed information, refer 0 19. Steering Wheel Controls 129 24. Data Link Connector (DLC) to each of the features which can be (If Equipped). (Out of View). See Malfunction found later in this owner’s manual. Driver Information Center (DIC) Indicator Lamp (Check Engine 0 Controls. See Driver Light) 150. Remote Keyless Entry Information Center (DIC) 25. Parking Brake 0 281. (RKE) System (Uplevel and Denali Cluster) 0 160 or Driver Information 26. Electronic Transfer Case Knob The Remote Keyless Entry (RKE) (If Equipped). See Four-Wheel transmitter functions may work from Center (DIC) (Base Level 0 Cluster) 0 158. Drive 272. up to 60 m (197 ft) away from the vehicle. 20. Hood Release. See Hood Card Holder (If Equipped). See 0 344. Instrument Panel Storage 0 124. 21. Horn 0 130. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

In Brief 9 See Keys 0 34 and Remote Keyless . Turn on the hazard warning Entry (RKE) System Operation 0 37. flashers. . Turn the vehicle on and then off. Remote Vehicle Start See Remote Vehicle Start 0 39. If equipped, the engine can be started from outside of the vehicle. Door Locks Starting the Vehicle There are several ways to lock and unlock the vehicle. 1. Press and release Q on the RKE transmitter. From outside, use the Remote Keyless Entry (RKE) transmitter or 2. Immediately press and hold / the key in the driver door. for at least four seconds or until K : Press to unlock the driver door. the turn signal lamps flash. From inside, use the power door Press K again within three seconds locks. to unlock all remaining doors and Start the vehicle normally after entering. From inside, pull the door handle the tailgate, if equipped. once to unlock the door. Pull again Q : Press to lock all doors and the When the vehicle starts, the parking to open the door. tailgate. Lock and unlock feedback lamps will turn on. can be personalized. See Vehicle Remote start can be extended. Personalization 0 165. Canceling a Remote Start 7 : Press and release one time to To cancel a remote start, do one of initiate vehicle locator. Press 7 and the following: hold for at least three seconds to sound the panic alarm. Press 7 . Press and hold / until the again to cancel the panic alarm. parking lamps turn off. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

10 In Brief Power Door Locks Windows Power Sliding Rear Window Power Windows

Crew/Double Cab Premium Trim Shown, Other Models Similar If equipped, the power sliding rear Crew/Double Cab Premium Trim window works when the ignition has Q : Press to lock the doors. Shown, Other Models Similar been turned on or to ACC/ K ACCESSORY, or when Retained : Press to unlock the doors. Power windows work when the Accessory Power (RAP) is active. See Door Locks 0 40 and Power ignition is on, in ACC/ACCESSORY, See Retained Accessory Power Door Locks 0 41. or when Retained Accessory Power (RAP) 0 260. (RAP) is active. See Retained Accessory Power (RAP) 0 260. Using the window switch, press to open or pull to close the window. Using the window switch, press to open or pull to close the window. The power sliding rear window cannot be operated manually. See The windows may be temporarily Power Sliding Rear Window in disabled if they are used repeatedly “ ” Rear Windows 0 54. within a short time. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

In Brief 11 Seat Adjustment Power Seats Lumbar Adjustment Manual Seats Manual Lumbar

To adjust a power seat, if equipped: Move the seat forward or To adjust a manual seat: . If equipped, move the lever up or rearward by sliding the control down repeatedly to increase or 1. Pull the handle at the front of forward or rearward. decrease lumbar support. the seat. . If equipped, raise or lower the See Lumbar Adjustment 0 60. 2. Slide the seat to the desired front part of the seat cushion by position and release the moving the front of the control handle. up or down. 3. Try to move the seat back and . If equipped, raise or lower the forth to be sure it is locked in seat by moving the rear of the place. control up or down. See Seat Adjustment 0 59. See Power Seat Adjustment 0 60. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

12 In Brief Power Lumbar See Lumbar Adjustment 0 60. To return the seatback to the upright position: Reclining Seatbacks 1. Lift the lever fully without Manual Reclining Seatbacks applying pressure to the seatback, and the seatback will return to the upright position. 2. Push and pull on the seatback to make sure it is locked. See Reclining Seatbacks 0 61. Power Reclining Seatbacks

To adjust the power lumbar support, if equipped: . Press and hold the control forward to increase or rearward To adjust a manual seatback: to decrease upper and lower 1. Lift the lever. lumbar support at the same time. The seatback will automatically . If equipped, press and hold the fold forward. control up to increase upper lumbar support and decrease 2. To recline, move the seatback lower lumbar support. rearward to the desired position, then release the lever To recline a power seatback, Press and hold the control down to lock the seatback in place. to increase lower lumbar support if equipped: and decrease upper lumbar 3. Push and pull on the seatback . Tilt the top of the control support. to make sure it is locked. rearward to recline. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

In Brief 13 . Tilt the top of the control forward positions are linked to RKE Heated and Ventilated to raise. transmitter 1 or 2 for automatic Seats See Reclining Seatbacks 0 61. memory recalls. Before storing, adjust all available Memory Features memory feature positions. Turn the ignition on and then press and release SET; a beep will sound. Then immediately press and hold 1, 2, or B (Exit) on the driver door until two beeps sound. To manually recall these positions, press and hold 1, 2, or B until the saved position is reached. When Auto Memory Recall is enabled in vehicle personalization, Heated and Ventilated Seat positions previously stored to Buttons Shown, Heated Seat memory buttons 1 and 2 are Buttons Similar Crew/Double Cab Shown, Other recalled when the ignition is If equipped, the buttons are on the Models Similar changed from off to on or ACC/ center stack. To operate, the engine ACCESSORY. If equipped, memory seats allow two must be running. drivers to store and recall their When Easy Exit Options is enabled unique seat positions for driving the in vehicle personalization, the Press I to heat the driver or vehicle, and a shared exit position feature automatically recalls the passenger seatback only. for getting out of the vehicle. Other previously stored exit position when Press J to heat the driver or feature positions may also be set, exiting the vehicle. See Memory passenger seat cushion and such as power mirrors, power Seats 0 62. seatback. steering wheel, and adjustable pedals, if equipped. Memory GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

14 In Brief Press C to ventilate the driver or Seat Belts Passenger Sensing passenger seat. System See Heated and Ventilated Front The passenger sensing system, 0 Seats 65. if equipped, turns off the front outboard passenger frontal airbag Head Restraint under certain conditions. No other Adjustment airbag is affected by the passenger sensing system. Do not drive until the head restraints for all occupants are installed and If the vehicle has one of the adjusted properly. indicators pictured in the following illustrations, then the vehicle has a To achieve a comfortable seating passenger sensing system for the position, change the seatback front outboard passenger position recline angle as little as necessary Refer to the following sections for unless there is an airbag off switch while keeping the seat and the head on the instrument panel endcap. restraint height in the proper important information on how to use position. seat belts properly: If there is an airbag off switch, the vehicle does not have a passenger See Head Restraints 0 58 and . Seat Belts 0 69. 0 sensing system. See Airbag On-Off Power Seat Adjustment 60. . How to Wear Seat Belts Properly Switch 0 84 for more information. 0 70. The passenger airbag status . Lap-Shoulder Belt 0 71. indicator will be visible on the . Lower Anchors and Tethers for overhead console when the vehicle Children (LATCH System) 0 99. is started. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

In Brief 15 Exterior Mirrors 2. Press the arrows on the control pad to move the mirror up, Manual Mirrors down, right, or left. If equipped, adjust manual mirrors 3. Adjust each outside mirror so by moving them up and down or left that a little of the vehicle and to right to see a little of the side of the area behind it can be seen. United States the vehicle and to have a clear view behind the vehicle. 4. Keep the selector switch in the center position when not 0 See Manual Mirrors 47. adjusting either outside mirror. Power Mirrors

Canada and Mexico See Passenger Sensing System 0 86 for important information. Mirror Adjustment Using hood-mounted air deflectors and add-on convex mirror attachments could decrease mirror Uplevel with Power Folding performance. Base Power Mirrors Mirrors If equipped with power mirrors: 1. Press (1) or (3) to select the driver or passenger side mirror. 1. Press (1) or (2) to select the driver or passenger side mirror. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

16 In Brief 2. Press the arrows on the control Interior Mirror Steering Wheel pad while the indicator light on the (1) or (3) button is Adjustment Adjustment illuminated, to move the mirror Adjust the mirror for a clear view of up, down, right, or left. the area behind the vehicle. 3. Adjust each outside mirror so Manual Dimming Rearview Mirror that a little of the vehicle and the area behind it can be seen. If equipped, push the tab forward for daytime use and pull it for nighttime 4. Press either (1) or (3) again to use to avoid glare from the deselect the mirror. headlamps from behind. See See Power Mirrors 0 48. Manual Rearview Mirror 0 52. If equipped with power folding Automatic Dimming Rearview mirrors: Mirror 1. Press (2) to fold the mirrors out If equipped, the mirror will to the driving position. automatically reduce the glare of the To adjust the steering wheel: headlamps from behind. The 2. Press (2) again to fold the dimming feature comes on when the 1. Hold the steering wheel and mirrors in to the folded position. vehicle is started. pull the lever. For manual, power, and auto folding See Automatic Dimming Rearview 2. Move the steering wheel up mirrors, see Folding Mirrors 0 49. Mirror 0 52. or down. The mirrors may also include a 3. Release the lever to lock the memory function that works with the wheel in place. memory seats. See Memory Seats 0 62. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

In Brief 17 Tilt and Telescoping Steering Throttle and Brake Pedal Interior Lighting Wheel Adjustment Dome Lamps If equipped, the position of the throttle and brake pedals can be changed.

To adjust the tilt and telescoping steering wheel, if equipped: There are dome lamps in the overhead console and the headliner, 1. Push the lever (1) down to if equipped. move the steering wheel forward or rearward. Lift the The switch used to adjust the To change the dome lamp settings, lever up to lock the wheel in pedals is on the center stack, below press the following: the climate controls. place. OFF : Turns the lamps off, even 2. Pull the lever (2) toward you to Lift the switch up to move the when a door is open. pedals closer to your body. Press move the steering wheel up or DOOR : The lamps come on down, then release the lever to the switch down to move the pedals away. automatically when a door is lock the wheel in place. opened. See Adjustable Throttle and Brake Do not adjust the steering wheel 0 ON : Turns all dome lamps on. while driving. Pedal 256. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

18 In Brief Reading Lamps Exterior Lighting

Press m or n next to each reading lamp to turn it on or off. For more information about interior The exterior lamp control is on the lighting, see Instrument Panel instrument panel to the left of the Illumination Control 0 182. steering wheel. There are reading lamps in the O : Turns off the automatic overhead console and the headliner, headlamps and Daytime Running if equipped. To operate, the ignition Lamps (DRL). Turn the headlamp must be on or in ACC/ACCESSORY control to O again to turn the or using Retained Accessory Power (RAP). automatic headlamps or DRL back on. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

In Brief 19 For vehicles first sold in Canada, off Windshield Wiper/Washer 3 INT : Turn the band up for more will only work when the vehicle is in frequent wipes or down for less P (Park). frequent wipes. AUTO : Automatically turns on the OFF : Turns the windshield headlamps, parking lamps, wipers off. taillamps, instrument panel lights, roof marker lamps (if equipped), 8 : For a single wipe, turn to 8, front/rear sidemarker lamps, and then release. For several wipes, license plate lamps. hold the band on 8 longer. The windshield wiper control is on ; : Turns on the parking lamps the turn signal lever. Lm : Push the paddle at the top of including all lamps, except the the lever to spray washer fluid on The windshield wipers are controlled headlamps. the windshield. by turning the band with z on it. 5 : Turns on the headlamps See Windshield Wiper/Washer together with the parking lamps and 1 : Fast wipes. 0 130. instrument panel lights. w : Slow wipes. See: . Exterior Lamp Controls 0 176. . Daytime Running Lamps (DRL) 0 179. . Fog Lamps 0 181. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

20 In Brief Climate Controls These systems control the heating, cooling, and ventilation. For an eAssist vehicle, see the Silverado/Sierra eAssist supplement. Climate Control System (with Heater Only)

1. Fan Control 4. Defrost 2. Air Recirculation 5. TEMP (Temperature Control) 3. Air Delivery Mode Control GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

In Brief 21 Climate Control System (with Air Conditioning)

1. Fan Control 6. K (Rear Window Defogger, If 2. A/C (Air Conditioning) Equipped) 3. Air Delivery Mode Control f (Outside Heated Mirror, If 4. Defrost Equipped) 5. TEMP (Temperature Control) 8 (Outside Air, If Equipped) 7. Air Recirculation GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

22 In Brief Dual Automatic Climate Control System Transmission Range Selection Mode

The Range Selection Mode switch, if equipped, is on the shift lever. 1. To enable the Range Selection feature, move the shift lever to 1. Driver Temperature Control 8. Rear Window Defogger the L (Manual Mode) position. 2. A/C (Air Conditioning) 9. Power Button The current range will appear next to the L. This is the 3. Air Delivery Mode Controls 10. Air Recirculation highest attainable range with 4. Fan Control 11. AUTO (Automatic Operation) all lower gears accessible. As 5. Defrost See Dual Automatic Climate Control an example, when 5 (Fifth) System 0 228. gear is selected, 1 (First) 6. Passenger Temperature through 5 (Fifth) gears are Control available. 7. SYNC (Synchronized 2. Press the plus/minus buttons Temperature) on the shift lever to select the desired range of gears for current driving conditions. See Manual Mode 0 268. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

In Brief 23 While using Range Selection Mode, Manual Transfer Case Electronic Transfer Case cruise control and the Tow/Haul Mode can be used. Grade Braking is not available when Range Selection Mode is active. See Tow/Haul Mode 0 271. Four-Wheel Drive If equipped with four-wheel drive, the engine's driving power can be sent to all four wheels for extra traction. Transfer Case Controls This transfer case shift lever is on This transfer case knob is to the left The vehicle will have one of the the floor to the right of the driver. of the steering column. following three styles of transfer case controls. Use these controls to shift into and out of the different four-wheel drive modes. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

24 In Brief Automatic Transfer Case Do not use AUTO mode to park on Vehicle Features a steep grade with poor traction such as ice, snow, mud or gravel. In AUTO mode only the rear wheels Infotainment System will hold the vehicle from sliding The base radio and base radio with when parked. If parking on a steep touchscreen information is included grade, use 4 m to keep all four in this manual. See the infotainment wheels engaged. manual for information on the uplevel radios, audio players, 4 m (Four-Wheel Drive High) : Use phone, navigation system, Rear this setting when extra traction is Seat Entertainment (RSE), and needed, such as on snowy or icy voice or speech recognition, roads or in most off-road situations. if equipped. N (Neutral) : Shift to this setting This transfer case knob is to the left only when towing the vehicle. Radio(s) of the steering column. See Recreational Vehicle Towing 0 0 Base Radio The different drive options that may 430 or Trailer Towing 307. be available are described following. O : Press to turn the system on. 4 n (Four-Wheel Drive Low) : This Press and hold to turn it off. When 2 m (Two-Wheel Drive High) : This setting sends maximum power to all on, press to mute; press again to setting is used for driving in most four wheels. Choose 4n when unmute. Turn to increase or street and highway situations. driving in deep sand, mud, or snow, decrease the volume. AUTO (Automatic Four-Wheel and while climbing or descending RADIO : Press to choose between Drive) : This setting is ideal for use steep hills. FM, AM, and SiriusXM, if equipped. 0 when road surface traction See Four-Wheel Drive 272. MEDIA : Press to change the audio conditions are variable. source between CD, USB, AUX, and Bluetooth Audio, if equipped. { : Press to go to the Home Page. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

In Brief 25 MENU : Press to select a menu. Satellite Radio Portable Audio Devices g : Press to seek the previous Vehicles with a SiriusXM satellite This vehicle may have a 3.5 mm station or track. radio tuner and a valid SiriusXM (1/8 in) auxiliary input jack and USB l : Press to seek the next station satellite radio subscription can ports in the center stack, center or track. receive SiriusXM programming. console, or under armrest. There may be a USB port in the upper See “Base Radio” in Overview SiriusXM Satellite Radio 0 glove box. External devices such as 188. Service iPods, laptop computers, MP3 Base Radio with Touchscreen SiriusXM is a satellite radio service players, and USB storage devices based in the 48 contiguous United may be connected, depending on O : Press to turn the system on. the audio system. Press and hold to turn it off. When States and 10 Canadian provinces. on, press to mute; press again to SiriusXM satellite radio has a wide See USB Port 0 197 and Auxiliary unmute. Turn to increase or variety of programming and Jack 0 203. decrease the volume. commercial-free music, coast to coast, and in digital-quality sound. Bluetooth { : Press to go to the Home Page. A fee is required to receive the 7 : Press to seek the previous SiriusXM service. The Bluetooth system allows users station or track. with a Bluetooth-enabled cell phone For more information refer to: to make and receive hands-free 6 : Press to seek the next station . www.siriusxm.com or call calls using the vehicle audio system or track. 1-888-601-6296 (U.S.). and controls. See “Base Radio with Touchscreen” . www.siriusxm.ca or call The Bluetooth-enabled cell phone in Overview 0 188. 1-877-438-9677 (Canada). must be paired with the in-vehicle Setting the Clock See Satellite Radio 0 192. Bluetooth system before it can be used in the vehicle. Not all phones See Clock 0 132. will support all functions. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

26 In Brief See Bluetooth (Overview) 0 211 or i : Press to reject an incoming 1. Favorite: When on a radio Bluetooth (Infotainment Controls) call or end a current call. Press to source, press to select the next 0 213. mute or unmute the infotainment or previous favorite. When on a system when not on a call. media source, press to select Steering Wheel Controls the next or previous track. o or p : Press to go to the previous or next menu option. 2. Volume: Press to increase or decrease the volume. w or x : Press to go to the next or previous selection. See Steering Wheel Controls 0 129. V : Press to select a highlighted Cruise Control menu option.

If equipped, some audio controls can be adjusted at the steering wheel. g : For vehicles with OnStar or a Bluetooth system, press to interact with those systems. See OnStar Overview 0 479 or “Bluetooth The favorite and volume switches 5 : Press to turn the system on or (Overview)” in the infotainment are on the back of the steering off. A white indicator comes on in manual. wheel. the instrument cluster when cruise control is on and turns off when cruise control is off. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

In Brief 27 + RES : If there is a set speed in Forward Collision Alert memory, press briefly to resume to that speed or press and hold to (FCA) System accelerate. If cruise control is If equipped, FCA may help avoid or already active, use to increase reduce the harm caused by vehicle speed. front-end crashes. FCA provides a SET − : Press briefly to set the green indicator, V, when a vehicle speed and activate cruise control. is detected ahead. This indicator If cruise control is already active, displays amber if you follow a use to decrease vehicle speed. vehicle too closely. When approaching a vehicle ahead too * : Press to disengage cruise quickly, FCA provides a flashing red control without erasing the set alert on the windshield and rapidly speed from memory. w or x : Press to move up or beeps or pulses the driver seat. See Cruise Control 0 285. down in a list. See Forward Collision Alert (FCA) o or p : Press to move between System 0 292. Driver Information the interactive display zones in the Center (DIC) cluster. Forward Automatic The DIC display is in the instrument V : Press to open a menu or select Braking (FAB) cluster. It shows the status of many a menu item. Press and hold to If the vehicle has Forward Collision vehicle systems. reset values on certain screens. Alert (FCA), it also has FAB, which See Driver Information Center (DIC) includes Intelligent Brake (Uplevel and Denali Cluster) 0 160 Assist (IBA). When the system or Driver Information Center (DIC) detects a vehicle ahead in your path (Base Level Cluster) 0 158. that is traveling in the same direction that you may be about to crash into, it can provide a boost to braking or automatically brake the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

28 In Brief vehicle. This can help avoid or vehicle approaches a detected lane Parking Assist lessen the severity of crashes when marking without using a turn signal driving in a forward gear. in that direction. It may also provide If equipped, Rear Parking a Lane Departure Warning (LDW) Assist (RPA) uses sensors on the See Forward Automatic Braking rear bumper to assist with parking (FAB) 0 294. alert as the lane marking is crossed. The system will not assist or alert if and avoiding objects while in it detects that you are actively R (Reverse). It operates at speeds Lane Departure steering. Override LKA by turning less than 8 km/h (5 mph). RPA may Warning (LDW) the steering wheel. LKA uses a show a warning triangle on the camera to detect lane markings infotainment display and a graphic If equipped, LDW may help avoid on the instrument cluster to provide unintentional lane departures at between 60 km/h (37 mph) and 180 km/h (112 mph). the object distance. In addition, speeds of 56 km/h (35 mph) or multiple beeps or seat pulses may greater. LDW uses a camera sensor See Lane Departure Warning (LDW) occur if very close to an object. to detect the lane markings. The (2500/3500 Series) 0 295 and Lane The vehicle may also have the Front LDW light, @, is green if a lane Keep Assist (LKA) (1500 Series) Parking Assist system. marking is detected. If the vehicle 0 297. departs the lane, the light will See Assistance Systems for Parking change to amber and flash. In Rear Vision or Backing 0 289. addition, beeps will sound or the Camera (RVC) driver seat will pulse. Power Outlets If equipped, RVC shows a view of See Lane Departure Warning (LDW) the area behind the vehicle on the Accessory power outlets can be 0 (2500/3500 Series) 295. infotainment display when the used to plug in electrical equipment, vehicle is shifted into R (Reverse) to such as a cell phone, MP3 Lane Keep Assist (LKA) aid with parking and low-speed player, etc. If equipped, LKA may help avoid backing maneuvers. The vehicle may have up to four crashes due to unintentional lane See Assistance Systems for Parking accessory power outlets. departures. It may assist by gently or Backing 0 289. turning the steering wheel if the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

In Brief 29 Vehicles with a Center Console Universal Remote System Sunroof . One or two in front of the cupholders on the center console . One inside the center console . One on the rear of the center console Vehicles with Bench Seats . One on the center stack below the climate control system . One or two in the storage area on the bench seat Lift the cover to access and replace If equipped with the Universal If equipped, the sunroof operates when not in use. Remote system, these buttons will when the ignition is on or in ACC/ be in the front overhead console. ACCESSORY, or when Retained See Power Outlets 0 133. This system provides a way to Accessory Power (RAP) is active. See Retained Accessory Power replace up to three remote control 0 transmitters used to activate (RAP) 260. devices such as garage door Slide Switch openers, security systems, and home automation devices. Express-Open/Express-Close : To express-open the sunroof, fully See Universal Remote System press and release I. Press the 0 172. switch again to stop the movement. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

30 In Brief To express-close the sunroof, fully When the sunroof is opened, an air Performance and press and release K. Press the deflector will automatically raise. switch again to stop the movement. The air deflector will retract when Maintenance the sunroof is closed. Open/Close (Manual Mode) : To Traction Control/ open the sunroof, press and hold The sunroof also has a sunshade, I. Release the switch to stop the which can be pulled forward to block Electronic Stability sun rays. The sunshade must be movement. Press and hold K to Control opened and closed manually. close the sunroof. Release the The vehicle has a Traction Control If an object is in the path of the switch to stop the movement. System (TCS) that limits wheel spin sunroof while it is closing, the and the StabiliTrak system that Tilt Switch automatic reversal system will assists with directional control of the detect the object and stop the Vent : From the closed position, vehicle in difficult driving conditions. sunroof. press J to vent the sunroof. Press Both systems come on K to close the vent. See Sunroof 0 55. automatically when the vehicle is started and begins to move. . To turn off TCS, press and release g on the center stack. The traction off light i displays in the instrument cluster. The appropriate Driver Information Center (DIC) message displays. . To turn off both TCS and StabiliTrak, press and hold g until i and g illuminate in the instrument cluster and the appropriate DIC message displays. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

In Brief 31 . Press and release again to Loading Information label. See Fuel (Gasoline - Except g 0 turn on both systems. Vehicle Load Limits 248. The warning light will remain on until the L86 6.2L Engine) StabiliTrak will automatically turn on tire pressure is corrected. if the vehicle exceeds 56 km/h (35 mph). Traction control will The low tire pressure warning light remain off. may come on in cool weather when the vehicle is first started, and then See Traction Control/Electronic turn off as the vehicle is driven. This 0 Stability Control 282. may be an early indicator that the tire pressures are getting low and Regular Fuel Tire Pressure Monitor the tires need to be inflated to the Use only unleaded gasoline rated This vehicle may have a Tire proper pressure. 87 octane or higher in your vehicle. Pressure Monitor System (TPMS). The TPMS does not replace normal Do not use gasoline with an octane monthly tire maintenance. Maintain rating lower as it may result in the correct tire pressures. vehicle damage and lower fuel See Tire Pressure Monitor System economy. See Fuel 0 299. 0 399. Tire Fill Alert (If Equipped) This feature provides visual and The low tire pressure warning light audible alerts outside the vehicle to alerts to a significant loss in help when inflating an underinflated pressure of one of the vehicle's tire to the recommended cold tire tires. If the warning light comes on, pressure. See “Tire Fill Alert (If stop as soon as possible and inflate Equipped)” under Tire Pressure the tires to the recommended Monitor Operation 0 400. pressure shown on the Tire and GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

32 In Brief Fuel (Gasoline - L86 6.2L E85 or FlexFuel Resetting the Oil Life System Engine) To reset the engine oil life system: 1. Display OIL LIFE REMAINING on the DIC. See Driver Information Center (DIC) (Uplevel and Denali Cluster) 0 160 or Driver Information Center (DIC) (Base Level FlexFuel Possible Cluster) 0 158. If the vehicle Premium Recommended Fuel Certain models are compatible with does not have DIC buttons, the Use premium 93 octane unleaded E85 fuel. See E85 or FlexFuel vehicle must be in P (Park) to 0 gasoline in your vehicle. Unleaded 300. access this display. gasoline with an octane rating as 2. Press and hold V on the DIC, low as 87 may be used, but it will Engine Oil Life System or the trip odometer reset stem reduce performance and fuel The engine oil life system calculates if the vehicle does not have 0 economy. See Fuel 299. engine oil life based on vehicle use DIC buttons, for several and, on most vehicles, displays a seconds. The oil life will Fuel (Diesel) DIC message when it is necessary change to 100%. For diesel vehicles, do not use to change the engine oil and filter. The oil life system can also be reset gasoline. See “Fuel for Diesel The oil life system should be reset as follows: Engines in the Duramax diesel to 100% only following an oil ” 1. Display OIL LIFE REMAINING supplement. change. on the DIC. See Driver Information Center (DIC) (Uplevel and Denali Cluster) 0 160 or Driver Information Center (DIC) (Base Level Cluster) 0 158. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

In Brief 33 2. Fully press the accelerator . Keep vehicle tires properly pedal slowly three times within inflated. five seconds. . Combine several trips into a 3. If the display changes to 100%, single trip. the system is reset. . Replace the vehicle's tires with See Engine Oil Life System 0 353. the same TPC Spec number molded into the tire's sidewall Driving for Better Fuel near the size. Economy . Follow recommended scheduled maintenance. Driving habits can affect fuel mileage. Here are some driving tips to get the best fuel economy Roadside Assistance possible. Program . Avoid fast starts and accelerate U.S.: 1-888-881-3302 smoothly. TTY Users (U.S. Only): . Brake gradually and avoid 1-888-889-2438 abrupt stops. Canada: 1-800-268-6800 . Avoid idling the engine for long New GMC owners are automatically periods of time. enrolled in the Roadside Assistance . When road and weather Program. conditions are appropriate, use See Roadside Assistance Program cruise control. 0 469. . Always follow posted speed limits or drive more slowly when conditions require. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

34 Keys, Doors, and Windows Trailer-Tow Mirrors ...... 48 Keys and Locks Keys, Doors, and Power Mirrors ...... 48 Windows Folding Mirrors ...... 49 Heated Mirrors ...... 50 Keys Automatic Dimming Mirror . . . . . 50 Keys and Locks Blind Spot Mirrors ...... 50 { Warning Keys ...... 34 Reverse Tilt Mirrors ...... 51 Leaving children in a vehicle with Remote Keyless Entry (RKE) Interior Mirrors System ...... 37 the ignition key is dangerous and Interior Rearview Mirrors ...... 51 children or others could be Remote Keyless Entry (RKE) Manual Rearview Mirror ...... 52 System Operation ...... 37 seriously injured or killed. They Automatic Dimming Rearview could operate the power windows Remote Vehicle Start ...... 39 Mirror ...... 52 Door Locks ...... 40 or other controls or make the Power Door Locks ...... 41 Windows vehicle move. The windows will Automatic Door Locks ...... 41 Windows ...... 52 function with the keys in the Lockout Protection ...... 42 Manual Windows ...... 52 ignition, and children or others Safety Locks ...... 42 Power Windows ...... 52 could be caught in the path of a Rear Windows ...... 54 Doors closing window. Do not leave Sun Visors ...... 55 children in a vehicle with the Tailgate ...... 43 Power Assist Steps ...... 43 Roof ignition key. Sunroof ...... 55 Vehicle Security Vehicle Security ...... 44 Vehicle Alarm System ...... 44 Immobilizer ...... 46 Immobilizer Operation ...... 46 Exterior Mirrors Convex Mirrors ...... 47 Manual Mirrors ...... 47 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Keys, Doors, and Windows 35 reduce the risk of unintentionally Warning (Continued) moving the key out of the RUN position. Do not add any additional impacted, and airbags may not items to the ring attached to the deploy. To reduce the risk of ignition key. Attach additional items unintentional rotation of the only to the second ring, and limit ignition key, do not change the added items to a few essential keys way the ignition key and Remote or small, light items no larger than Keyless Entry (RKE) transmitter, an RKE transmitter. if equipped, are connected to the provided key rings.

The ignition key and key rings, and { Warning RKE transmitter, if equipped, are designed to work together as a If the key is unintentionally system to reduce the risk of rotated while the vehicle is unintentionally moving the key out running, the ignition could be of the RUN position. The ignition moved out of the RUN position. key has a small hole to allow This could be caused by heavy attachment of the provided key ring. items hanging from the key ring, It is important that any replacement or by large or long items attached ignition keys have a small hole. See to the key ring that could be your dealer if a replacement key is contacted by the driver or required. steering wheel. If the ignition The combination and size of the moves out of the RUN position, rings that came with your keys were the engine will shut off, braking specifically selected for your and steering power assist may be vehicle. The rings are connected to (Continued) the key like two links of a chain to GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

36 Keys, Doors, and Windows Programming with Two Programming without Recognized Keys Recognized Keys To program a new key: Program a new key to the vehicle 1. Insert the original, already when a recognized key is not programmed key in the ignition available. Canadian regulations and turn the ignition on. require that owners see their dealer. 2. Turn the ignition off, and If two currently recognized keys are remove the key. not available, follow this procedure to program the first key. 3. Quickly, within five seconds, insert the second original This procedure will take already programmed key in the approximately 30 minutes to Interference from radio-frequency ignition and turn the ignition on. complete for the first key. The identification (RFID) tags may vehicle must be off and all of the 4. Turn the ignition off, and prevent the key from starting the keys you wish to program must be remove the key. vehicle. Keep RFID tags away from with you. the key when starting the vehicle. 5. Insert the key to be 1. Insert the new vehicle key into programmed and turn the The key is used for the ignition, all the ignition. ignition on within five seconds. door locks and glove box, 2. Turn the ignition on. The if equipped. 6. The security light will turn off security light will come on. once the key has been If equipped with memory seats, programmed. 3. Wait 10 minutes until the keys 1 and 2 are linked to seating security light turns off. positions of memory 1 or 2. See 7. Repeat Steps 1–5 if additional 4. Turn the ignition off. Memory Seats 0 62. keys are to be programmed. 5. Repeat Steps 2–4 two more Programming Keys If a key is lost or damaged, see your dealer to have a new key made. times. After the third time, turn Follow these procedures to program the ignition on; the key is up to eight keys to the vehicle. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Keys, Doors, and Windows 37 learned and all previously Remote Keyless Entry Other conditions can affect the known keys will no longer work performance of the transmitter. See with the vehicle. (RKE) System Remote Keyless Entry (RKE) See Radio Frequency Statement System 0 37. 6. To learn a second key, turn the 0 ignition off, insert the second 475. key to be learned, and turn the If there is a decrease in the Remote ignition on. Keyless Entry (RKE) operating After two keys are learned, the range: remaining keys can be learned by . Check the distance. The following the procedure in transmitter may be too far from “Programming with Two the vehicle. Recognized Keys. ” . Check the location. Other The key has a bar-coded key tag vehicles or objects may be that the dealer or qualified locksmith blocking the signal. can use to make new keys. Store . Check the transmitter's battery. this information in a safe place, not See Battery Replacement later With Remote Start (without in the vehicle. “ ” in this section. Remote Start Similar) See your dealer if a replacement . If the transmitter is still not key or additional key is needed. / : If equipped, / is used to start working correctly, see your the engine from outside the vehicle If it becomes difficult to turn a key, dealer or a qualified technician using the RKE transmitter. See inspect the key blade for debris. for service. Remote Vehicle Start 0 39. Periodically clean with a brush or pick. Q : Press to lock all doors and the Remote Keyless Entry tailgate. With an active OnStar service plan, (RKE) System Operation an OnStar Advisor may remotely If enabled in vehicle personalization, unlock the vehicle. See OnStar The RKE transmitter functions may the turn signal lamps flash once to Overview 0 479. work up to 60 m (197 ft) away from indicate locking has occurred. the vehicle. If enabled through vehicle GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

38 Keys, Doors, and Windows personalization, the horn chirps personalization, the exterior lamps when the ignition is turned on or 7 when is pressed again within may turn on. See Vehicle is pressed again. The ignition must Q 0 three seconds. See Vehicle Personalization 165. be off for the panic alarm to work. Personalization 0 165. Pressing K on the RKE transmitter Programming Transmitters to Pressing Q arms the alarm system. disarms the alarm system. See the Vehicle 0 See Vehicle Alarm System 0 44. Vehicle Alarm System 44. Only RKE transmitters programmed If equipped with auto mirror folding, If equipped with auto mirror folding, to this vehicle will work. If a K pressing and holding Q for pressing and holding for transmitter is lost or stolen, a one second will fold the mirrors. The one second will unfold the mirrors. replacement can be purchased and auto mirror folding feature will not The auto mirror folding feature will programmed through your dealer. operate unless it is enabled. not operate unless it is enabled. Each vehicle can have up to 0 See Folding Mirrors 0 49 and See Folding Mirrors 49 and eight transmitters programmed to it. 0 Vehicle Personalization 0 165. Vehicle Personalization 165. See your dealer for transmitter programming. K : Press once to unlock only the On some models, press, release, driver door. If K is pressed again and then press and hold K to open Battery Replacement within three seconds, all remaining all of the windows. Pressing the Replace the battery in the doors and the tailgate unlock. The button again will stop the windows. 0 transmitter soon if the REPLACE interior lamps may come on and See Vehicle Personalization 165. BATTERY IN REMOTE KEY stay on for 20 seconds or until the 7 : Press and release one time to message displays in the Driver ignition is turned on. initiate vehicle locator. The turn Information Center (DIC). If enabled in vehicle personalization, signal lamps flash and the horn the turn signal lamps flash twice to sounds three times. indicate unlocking has occurred. Press and hold 7 for at least 0 See Vehicle Personalization 165. three seconds to sound the panic If enabled through vehicle alarm. The turn signal lamps flash and the horn sounds repeatedly for 30 seconds. The alarm turns off GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Keys, Doors, and Windows 39 Remote Vehicle Start Caution If equipped with the remote start When replacing the battery, do feature, the climate control system not touch any of the circuitry on will come on when the vehicle is the transmitter. Static from your started remotely, depending on the body could damage the outside temperature. transmitter. The rear defog and heated and ventilated seats, if equipped, may To replace the battery: also come on. See Heated and Ventilated Front Seats 0 65 and Vehicle Personalization 0 165. 2. Press and slide the battery Laws in some communities may down toward the pocket of the restrict the use of remote starters. transmitter in the direction of Check local regulations for any the key ring. Do not use a requirements on remote starting of metal object. vehicles. 3. Remove the battery. Do not use remote start if the 4. Insert the new battery, positive vehicle is low on fuel. side facing up. Replace with a The vehicle cannot be remote CR2032 or equivalent battery. started if: 5. Push together the transmitter . The key is in the ignition. 1. Separate and remove the back back cover top side first, and . The hood is not closed. cover of the transmitter with a then the bottom toward the flat, thin object, such as a coin. key ring. . There is an emission control system malfunction and the malfunction indicator lamp is on. . Fuel level is too low. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

40 Keys, Doors, and Windows The engine will turn off during a The engine will continue to run . Turn on the hazard warning remote vehicle start if: for 10 minutes. After flashers. . The coolant temperature gets 30 seconds, repeat . Turn the ignition on and then off. too high. Steps 1 and 2 for a 10-minute time extension. . The oil pressure gets low. Door Locks Turn the ignition on to operate the The RKE transmitter range may be vehicle. reduced while the vehicle is running. { Warning Extending Engine Run Time Other conditions can affect the Unlocked doors can be performance of the transmitter. The engine run time can be dangerous. See Remote Keyless Entry (RKE) extended by 10 minutes, for a total . Passengers, especially System 0 37 or Vehicle of 20 minutes, if during the first children, can easily open Personalization 0 165. 10 minutes Steps 1 and 2 are repeated while the engine is still the doors and fall out of a Starting the Engine Using Remote running. An extension can be moving vehicle. The doors Start requested 30 seconds after starting. can be unlocked and opened while the vehicle is 1. Press and release Q. A maximum of two remote starts, moving. The chance of or a single start with an extension, 2. Immediately press and hold / being thrown out of the is allowed between ignition cycles. vehicle in a crash is until the turn signal lamps flash increased if the doors are or for at least four seconds. The vehicle's ignition must be turned on and then back off to use not locked. So, all When the vehicle starts, the remote start again. passengers should wear parking lamps will turn on. The seat belts properly and the doors will be locked and the Canceling a Remote Start doors should be locked climate control system may To cancel a remote start, do one of whenever the vehicle is come on. the following: driven. . Press and hold / until the (Continued) parking lamps turn off. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Keys, Doors, and Windows 41 From inside, pull the door handle Automatic Door Locks Warning (Continued) once to unlock the door. Pull the handle again to open the door. The doors will lock automatically . Young children who get into when all doors are closed, the 0 unlocked vehicles may be See Vehicle Alarm System 44. ignition is on, and the vehicle is unable to get out. A child shifted out of P (Park). can be overcome by Power Door Locks extreme heat and can suffer If a vehicle door is unlocked, and permanent injuries or even then opened and closed, the doors death from heat stroke. will lock either when your foot is Always lock the vehicle removed from the brake or the whenever leaving it. vehicle speed becomes faster than 13 km/h (8 mph). . Outsiders can easily enter through an unlocked door To unlock the doors: when you slow down or stop . Press K on the power door lock the vehicle. Locking the switch. doors can help prevent this from happening. . Shift the transmission into P (Park). There are several ways to lock and Crew/Double Cab Premium Trim Automatic door locking cannot be unlock the vehicle. Shown, Other Models Similar disabled. Automatic door unlocking can be programmed. See Vehicle From outside, use the Remote Q : Press to lock the doors. Personalization 0 165. Keyless Entry (RKE) transmitter or K : Press to unlock the doors. the key in the driver door. From inside, use the power door locks or manual door locks. To lock or unlock the door with the manual locks, push down or pull up on the manual lock knob. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

42 Keys, Doors, and Windows Lockout Protection Unlocked Door Anti-Lockout If the ignition is on or in ACC/ If Unlocked Door Anti-Lockout is ACCESSORY and the power door turned on and the vehicle is off, the lock switch is pressed with the driver door is open, and locking is driver door open, all the doors will requested, all the doors will lock and lock and only the driver door will the driver door will remain open. unlock. Press the button again to lock the driver door. The Unlocked Door If the vehicle is off and locking is Anti-Lockout feature can be turned selected while a door is open, when on or off. See Vehicle all doors are closed the vehicle will Personalization 0 165. check for RKE transmitters inside. If an RKE transmitter is detected, Safety Locks Crew/Double Cab Premium Trim and the number of RKE transmitters Shown, Others Similar has not reduced, the driver door will The rear door safety locks prevent unlock and the horn will chirp three passengers from opening the rear Press { to activate the safety locks times. doors from inside the vehicle. on the rear doors. The indicator light This can be manually overridden by comes on when activated. Press { pressing and holding Q on the again to deactivate. The vehicle power door lock switch. must be on, in ACC/ACCESSORY, or in Retained Accessory Power (RAP). See Retained Accessory Power (RAP) 0 260. If the indicator light flashes, the feature may not be working properly. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Keys, Doors, and Windows 43 Doors To shut the tailgate, firmly push it Kick Switch upward until it latches. Tailgate After closing the tailgate, pull it back to be sure it latches securely. { Warning Power Assist Steps It is extremely dangerous to ride If equipped, the power assist steps, on the tailgate, even when the when enabled, will extend when the vehicle is operated at low speeds. door is opened. They will retract People riding on the tailgate can three seconds after the door is easily lose their balance and fall closed or immediately if the vehicle in response to vehicle starts moving. maneuvers. Falling from a moving Keep hands, children, pets, objects, vehicle may result in serious and clothing clear of the power 1. Place the vehicle in P (Park) injuries or death. Do not allow assist steps when in motion. and unlock the doors. people to ride on the tailgate. Be 2. Kick the switch to extend the sure everyone in your vehicle is in The steps will reverse direction if there is an obstruction. Remove the power assist step to the tire. a seat and using a seat belt obstruction, then open and close the A DIC message displays. properly. door on the same side to complete 3. Kick the switch again to return the motion. If the obstruction is not to normal operation. If equipped, to lock or unlock the cleared, the assist steps remain tailgate, use the RKE transmitter or extended. the key. See Remote Keyless Entry 0 Slight movement of the steps while (RKE) System Operation 37. extended is normal. Open the tailgate by lifting up on its handle while pulling the tailgate down. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

44 Keys, Doors, and Windows Center Stack Switch The vehicle must be in P (Park) or Vehicle Security N (Neutral). To extend the steps: This vehicle has theft-deterrent . Press j to extend both steps. features; however, they do not make A DIC message displays. the vehicle impossible to steal. . Press j again to extend to the tire. A DIC message displays. Vehicle Alarm System . Press j again to return to normal operation. Enable/Disable To enable or disable the power assist steps, press and hold j for The power assist steps four seconds. A DIC message can be extended and displays. extended to the tire by Cleaning pressing j. When extending Clean the power assist steps the steps with j, the kick regularly. For an automatic car switch is disabled. wash, extend the steps while in The indicator light, on the N (Neutral) using the center stack instrument panel near the switch. The steps will stow when windshield, indicates the status of shifting into D (Drive). the system. Off : Alarm system is disarmed. On Solid : Vehicle is secured during the delay to arm the system. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Keys, Doors, and Windows 45 Fast Flash : Vehicle is unsecured. If the driver door is opened without To avoid setting off the alarm by A door, the tailgate, or the hood first unlocking with the RKE accident: is open. transmitter, the horn will chirp and . Lock the vehicle after all Slow Flash : Alarm system is the lights will flash to indicate occupants have exited. armed. pre-alarm. If the vehicle is not started, or the door is not unlocked . Always unlock a door with the Arming the Alarm System by pressing K on the RKE RKE transmitter. 1. Turn off the vehicle. transmitter during the 10-second Unlocking the driver door with pre-alarm, the alarm will be the key will not disarm the 2. Lock the vehicle in one of activated. system or turn off the alarm. two ways: The alarm will also be activated if a . Use the RKE transmitter. How to Detect a Tamper passenger door, the tailgate, or the Condition hood is opened without first . With a door open, press Q K on the interior of the door. disarming the system. When the If is pressed on the RKE alarm is activated, the turn signals transmitter and the horn chirps three 3. After 30 seconds, the alarm flash and the horn sounds for about times, an alarm occurred previously system will arm and the 30 seconds. The alarm system will while the alarm system was armed. indicator light will begin to then re-arm to monitor for the next If the alarm has been activated, a slowly flash. Pressing on the unauthorized event. Q message will appear on the DIC. RKE transmitter a second time Disarming the Alarm System will bypass the 30-second Inclination Sensor and delay and immediately arm the To disarm the alarm system or turn Intrusion Sensor alarm system. off the alarm if it has been activated: In addition to the standard The vehicle alarm system will not . Press K on the RKE transmitter. theft-deterrent system features, this arm if the doors are locked with system may also have an inclination the key. . Start the vehicle. sensor and intrusion sensor. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

46 Keys, Doors, and Windows The inclination sensor can set off Inclination and Intrusion Immobilizer the alarm if it senses movement of Sensors Disable Switch the vehicle, such as a change in See Radio Frequency Statement 0 vehicle orientation. 475. The intrusion sensor monitors the Immobilizer Operation vehicle interior, and can activate the alarm if it senses unauthorized entry into the vehicle’s interior. Do not allow passengers or pets to remain in the vehicle when the intrusion sensor is activated. Before arming the theft-deterrent system and activating the intrusion This vehicle has a passive sensor: theft-deterrent system. . Make sure all doors and It is recommended that the intrusion The system does not have to be windows are completely closed. and inclination sensors be manually armed or disarmed. Secure any loose items such as . deactivated if pets are left in the The vehicle is automatically sunshades. vehicle or if the vehicle is being immobilized when the vehicle is . Make sure there are no transported. turned off. obstructions blocking the With the vehicle turned off, press The system is automatically sensors in the front overhead o in the front overhead console. disarmed when the ignition is turned console. The indicator light will come on from off to on. Close DVD screens, if equipped, momentarily, indicating that these . The security light, in the instrument before leaving the vehicle. sensors have been disabled for the next alarm system arming cycle. cluster, comes on if there is a problem with arming or disarming the theft-deterrent system. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Keys, Doors, and Windows 47 When trying to start the vehicle, the It is possible for the immobilizer Exterior Mirrors security light comes on briefly when system to learn new or replacement the ignition is turned on. keys. Up to eight keys can be Convex Mirrors If the engine does not start and the programmed for the vehicle. To program additional keys, see Keys security light stays on, there is a 0 problem with the system. Turn the 34. To program additional { Warning transmitters, see your dealer. ignition off and try again. A convex mirror can make things, If the engine still does not start, and Do not leave the key or device that like other vehicles, look farther disarms or deactivates the vehicle the key appears to be undamaged, away than they really are. If you theft system in the vehicle. try another ignition key. It may be cut too sharply into the right lane, necessary to check the fuse. See See your dealer to get a new key you could hit a vehicle on the Fuses and Circuit Breakers 0 381. blank cut exactly as the ignition key right. Check the inside mirror or If the engine still does not start with that operates the system. glance over your shoulder before the other key, the vehicle needs changing lanes. service. If the vehicle does start, the first key may be faulty. See your dealer. The passenger side mirror is convex shaped. A convex mirror's surface is curved so more can be seen from the driver seat. Manual Mirrors If equipped, adjust manual mirrors by moving the mirror up and down or left to right to see a little of the side of the vehicle and to have a clear view behind the vehicle. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

48 Keys, Doors, and Windows Using hood-mounted air deflectors seat. The convex mirror can be 1. Press (1) or (2) to select the and add-on convex mirror adjusted manually to the driver driver or passenger side mirror. attachments could decrease mirror preferred position for better vision. 2. Press one of the four arrows on performance. The mirror may have a turn signal the control pad to move the arrow that flashes in the direction of mirror in the desired direction. Trailer-Tow Mirrors the turn or lane change. 3. Adjust each outside mirror so that a little of the vehicle and Power Mirrors the area behind it can be seen. Using hood-mounted air deflectors 4. Move the selector switch to the and add-on convex mirror center position when not attachments could decrease mirror adjusting either outside mirror. performance.

If equipped, adjust trailer-tow mirrors for a clear view of the area behind you. Manually pull out the mirror head to extend it for better visibility when towing a trailer. The lower portion of the mirror is Crew/Double Cab Premium Base Power Mirrors convex. A convex mirror's surface is Shown, Other Models Similar curved to see more from the driver The power mirror controls are on the 1. Press (1) or (2) to select the driver door. driver or passenger side mirror. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Keys, Doors, and Windows 49 2. Press one of the four arrows on Folding Mirrors Resetting the Power Folding the control pad while the Mirrors indicator light on button (1) Reset the power folding mirrors if: or (2) is illuminated, to move the mirror in the desired . The mirrors are accidentally direction. obstructed while folding. 3. Adjust each outside mirror so . They are accidentally manually that a little of the vehicle and folded/unfolded. the area behind it can be seen. . The mirrors will not stay in the 4. Press either (1) or (2) again to unfolded position. deselect the mirror. . The mirrors vibrate at normal If you do not deselect the mirror, the driving speeds. feature will turn off after about Manually fold both mirrors if they Crew/Double Cab Premium Trim one minute. are out of sync. Fold and unfold the Shown, Other Models Similar The mirrors may include a memory mirrors three times using the mirror function that works with the memory Power Folding controls to reset them to their seats. See Memory Seats 0 62. normal position. A popping noise If equipped with power folding may be heard. This sound is normal mirrors: after a manual folding operation. 1. Press (2) to fold the mirrors out to the driving position. Manual Folding 2. Press (2) again to fold the If equipped, push the mirror toward mirrors in to the folded position. the vehicle to fold. Push the mirror outward to return to its original The mirrors may also include a position. memory function that works with the memory seats. See Memory Seats Manually fold the mirrors inward to 0 62. prevent damage when going through an automatic car wash. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

50 Keys, Doors, and Windows Auto Mirror Folding See “Rear Window Defogger” under Driving with the Blind Spot Dual Automatic Climate Control If equipped, with the ignition off, Mirror System 0 228. press and hold Q on the RKE transmitter for approximately Automatic Dimming one second to automatically fold the Mirror exterior mirrors. Press and hold K on the RKE transmitter for If equipped, the driver outside mirror approximately one second to unfold. automatically adjusts for the glare of See Remote Keyless Entry (RKE) the headlamps from behind. This System Operation 0 37. feature comes on when the vehicle is started. This feature is turned on or off through vehicle personalization. See Vehicle Personalization 0 165. Blind Spot Mirrors If equipped, there is a small convex Turn Signal Indicator mirror built into the upper and outer If equipped, indicator lights on the corner of the driver outside mirror. mirror flash in the direction of the It can show objects that may be in turn or lane change. the vehicle's blind zone. Heated Mirrors If equipped with heated mirrors: K : Press to heat the outside mirrors. If the vehicle has trailer-tow mirrors, only the upper glass of the mirror is heated. The lower convex Actual Mirror View part of the trailer-tow mirrors is not heated. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Keys, Doors, and Windows 51 1. When the approaching vehicle mirror for a vehicle in the blind Interior Mirrors is a long distance away, the zone. Then, glance over your image in the main mirror is shoulder to double check small and near the inboard before moving slowly into the Interior Rearview Mirrors edge of the mirror. adjacent lane. Adjust the rearview mirror for a clear 2. As the vehicle gets closer, the view of the area behind your image in the main mirror gets Reverse Tilt Mirrors vehicle. larger and moves outboard. If equipped with memory seats, the If equipped with OnStar, the vehicle 3. As the vehicle enters the blind passenger and/or driver mirror tilts may have three control buttons at zone, the image transitions to a preselected position when the the bottom of the mirror. See your from the main mirror to the vehicle is in R (Reverse). This dealer for more information about blind spot mirror. allows the curb to be seen when OnStar and how to subscribe to it. parallel parking. See OnStar Overview 0 479. 4. When the vehicle is in the blind zone, the image only appears The mirror(s) return to the original Do not spray glass cleaner directly in the blind spot mirror. position when: on the mirror. Use a soft towel dampened with water. Using the Outside Mirror with . The vehicle is shifted out of R (Reverse), or remains in the Blind Spot Mirror R (Reverse) for about 1. Set the main mirror so that the 30 seconds. side of the vehicle can just be . The ignition is turned off. seen and the blind spot mirror has an unobstructed view. . The vehicle is driven in R (Reverse) above a set speed. 2. When checking for traffic or before changing a lane, look at To turn this feature on or off, see the main driver/passenger side Vehicle Personalization 0 165. mirror to observe traffic in the adjacent lane, behind your vehicle. Check the blind spot GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

52 Keys, Doors, and Windows Manual Rearview Mirror Windows The vehicle aerodynamics are designed to improve fuel economy If equipped, push the tab forward for performance. This may result in a daytime use and pull it rearward for { Warning pulsing sound when either rear nighttime use to avoid glare from window is down and the front the headlamps from behind. Never leave a child, a helpless windows are up. To reduce the adult, or a pet alone in a vehicle, sound, open either a front window Automatic Dimming especially with the windows or the sunroof, if equipped. Rearview Mirror closed in warm or hot weather. They can be overcome by the Manual Windows The mirror will automatically reduce extreme heat and suffer the glare of the headlamps from permanent injuries or even death If equipped, turn the hand crank on behind. The dimming feature comes from heat stroke. each door to manually raise or lower on each time the vehicle is started. the manual windows. Power Windows

{ Warning

Children could be seriously injured or killed if caught in the path of a closing window. Never leave the Remote Keyless Entry (RKE) transmitter or keys in a vehicle with children. When there are children in the rear seat, use the window lockout button to prevent operation of the windows. See Keys 0 34. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Keys, Doors, and Windows 53 Window Lockout Window Express Movement All windows can be opened without holding the window switch. Press the switch down fully and quickly release to express open the window. If equipped, pull the window switch up fully and quickly release to express close the window. Briefly press or pull the window switch in the same direction to stop Crew/Double Cab Premium Trim that window’s express movement. Shown, Other Models Similar Crew/Double Cab Premium Window Automatic Reversal The power windows work when the Shown, Other Models Similar System ignition is on, in ACC/ACCESSORY, This feature stops the rear door or when Retained Accessory Power The express-close feature will passenger window switches from reverse window movement if it (RAP) is active. See Retained working except from the driver Accessory Power (RAP) 0 260. comes in contact with an object. position. Extreme cold or ice could cause the Using the window switch, press to Press Z to engage the rear window to auto-reverse. The open or pull to close the window. window will operate normally after window lockout feature. The the object or condition is removed. The windows may be temporarily indicator light is on when engaged. disabled if they are used repeatedly within a short time. Press Z again to disengage. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

54 Keys, Doors, and Windows Automatic Reversal System Programming the Power Rear Windows Override Windows Power Sliding Rear Window Programming may be necessary if { Warning the vehicle battery has been disconnected or discharged. If the If automatic reversal system window is unable to express-up, override is active, the window will program each express-close not reverse automatically. You or window: others could be injured and the window could be damaged. 1. Close all doors. Before using automatic reversal 2. Turn the ignition on or to ACC/ system override, make sure that ACCESSORY. all people and obstructions are 3. Partially open the window to be clear of the window path. programmed. Then close it and continue to pull the switch When the engine is on, override the briefly after the window has fully closed. If equipped, the power sliding rear automatic reversal system by pulling window works when the ignition has and holding the window switch if 4. Open the window and continue been turned on or to ACC/ conditions prevent it from closing. to press the switch briefly after ACCESSORY, or Retained the window has fully opened. Accessory Power (RAP) must be active. See Retained Accessory Power (RAP) 0 260. . Press the switch to open the window. . Pull the switch to close the window. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Keys, Doors, and Windows 55 The power sliding rear window Roof To express-close the sunroof, fully cannot be operated manually. press and release K. Press the switch again to stop the movement. Sun Visors Sunroof Open/Close (Manual Mode) : To open the sunroof, press and hold I. Release the switch to stop the movement. Press and hold K to close the sunroof. Release the switch to stop the movement. Tilt Switch Vent : From the closed position, press J to vent the sunroof. Press Pull the sun visor down to block K to close the vent. glare. Detach the sun visor from the center mount to pivot to the side When the sunroof is opened, an air window and, if equipped, extend If equipped, the sunroof operates deflector will automatically raise. along the rod. when the ignition is on or in ACC/ The air deflector will retract when ACCESSORY, or when Retained the sunroof is closed. Accessory Power (RAP) is active. The sunroof also has a sunshade, See Retained Accessory Power which can be pulled forward to block (RAP) 0 260. sun rays. The sunshade must be Slide Switch opened and closed manually. Express-Open/Express-Close : To express-open the sunroof, fully press and release I. Press the switch again to stop the movement. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

56 Keys, Doors, and Windows Automatic Reversal System the water drainage system. Periodically open the sunroof and The sunroof has an automatic remove any obstacles or loose reversal system that is only active debris. Wipe the sunroof seal and when the sunroof is operated in roof sealing area using a clean express-close mode. cloth, mild soap, and water. Do not If an object is in the path while remove grease from the sunroof express closing, the reversal system tracks. will detect an object, stop, and open If water is seen dripping into the the sunroof again. water drainage system, this is If frost or other conditions prevent normal. closing, override the feature by closing the sunroof in manual mode. To stop movement, release the switch.

Dirt and debris may collect on the sunroof seal or in the track. This could cause an issue with sunroof operation or noise. It could also plug GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 57 Seat Belt Extender ...... 75 Where to Put the Restraint . . . . . 98 Seats and Safety System Check ...... 75 Lower Anchors and Tethers for Restraints Seat Belt Care ...... 76 Children (LATCH System) . . . . 99 Replacing Seat Belt System Replacing LATCH System Parts after a Crash ...... 76 Parts After a Crash ...... 111 Securing Child Restraints (With Head Restraints Airbag System Head Restraints ...... 58 the Seat Belt in the Airbag System ...... 77 Rear Seat) ...... 111 Front Seats Where Are the Airbags? ...... 78 Securing Child Restraints (With Seat Adjustment ...... 59 When Should an Airbag the Seat Belt in the Center Center Seat ...... 59 Inflate? ...... 80 Front Seat) ...... 114 Power Seat Adjustment ...... 60 What Makes an Airbag Securing Child Restraints (With Lumbar Adjustment ...... 60 Inflate? ...... 82 the Seat Belt in the Front Reclining Seatbacks ...... 61 How Does an Airbag Passenger Seat) ...... 115 Memory Seats ...... 62 Restrain? ...... 82 Heated and Ventilated Front What Will You See after an Seats ...... 65 Airbag Inflates? ...... 82 Airbag On-Off Switch ...... 84 Rear Seats Passenger Sensing System . . . 86 Rear Seats (Double Cab Full Servicing the Airbag-Equipped Bench) ...... 66 Vehicle ...... 90 Rear Seats (Split Bench) ...... 68 Adding Equipment to the Airbag-Equipped Vehicle . . . . . 90 Seat Belts Airbag System Check ...... 91 Seat Belts ...... 69 Replacing Airbag System Parts How to Wear Seat Belts after a Crash ...... 92 Properly ...... 70 Lap-Shoulder Belt ...... 71 Child Restraints Seat Belt Use During Older Children ...... 92 Pregnancy ...... 74 Infants and Young Children . . . . 94 Lap Belt ...... 75 Child Restraint Systems ...... 96 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

58 Seats and Restraints Head Restraints Front Seats The vehicle’s front seats have adjustable head restraints in the outboard seating positions.

{ Warning

With head restraints that are not installed and adjusted properly, there is a greater chance that occupants will suffer a neck/ Adjust the head restraint so that the The height of the head restraint can spinal injury in a crash. Do not top of the restraint is at the same be adjusted. Pull the head restraint drive until the head restraints for height as the top of the occupant's up to raise it. Try to move the head all occupants are installed and head. This position reduces the restraint to make sure that it is chance of a neck injury in a crash. locked in place. adjusted properly. To lower the head restraint, press the button, located on the top of the seatback, and push the restraint down. Try to move the head restraint after the button is released to make sure that it is locked in place. The front seat outboard head restraints are not removable. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 59 Rear Seats Front Seats 2. Slide the seat to the desired position and release the The rear seat has adjustable handle. headrests in the outboard seating Seat Adjustment positions. 3. Try to move the seat back and forth to be sure it is locked in The height of the headrest can be { Warning place. adjusted. Pull the headrest up to raise it. To lower the headrest, push You can lose control of the To adjust the seatback, see the headrest down. vehicle if you try to adjust a driver Reclining Seatbacks 0 61. seat while the vehicle is moving. If you are installing a child restraint To adjust the lumbar support, Adjust the driver seat only when in the rear seat, see “Securing a if equipped, see Lumbar Adjustment Child Restraint Designed for the the vehicle is not moving. 0 60. LATCH System” under Lower Anchors and Tethers for Children Center Seat (LATCH System) 0 99. If equipped, the center front seatback doubles as an armrest and cupholder/storage area for the driver and passenger when the center front seat is not used. Do not use it as a seating position when the seatback is folded down.

To adjust a manual seat: 1. Pull the handle at the front of the seat. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

60 Seats and Restraints Power Seat Adjustment To adjust the lumbar support, see Power Lumbar Lumbar Adjustment 0 60. Some vehicles are equipped with a feature that activates a vibrating pulse alert in the driver seat to help the driver avoid crashes. See Driver Assistance Systems 0 288. Lumbar Adjustment Manual Lumbar

To adjust a power seat, if equipped: To adjust the power lumbar support, if equipped: . Move the seat forward or rearward by sliding the control . Press and hold the control forward or rearward. forward to increase or rearward to decrease upper and lower . If equipped, raise or lower the lumbar support at the same time. front part of the seat cushion by moving the front of the control . If equipped, press and hold the up or down. control up to increase upper lumbar support and decrease . If equipped, raise or lower the lower lumbar support. seat by moving the rear of the If equipped, move the lever up or control up or down. down repeatedly to increase or Press and hold the control down decrease lumbar support. to increase lower lumbar support To adjust the seatback, see 0 and decrease upper lumbar Reclining Seatbacks 61. support. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 61 Reclining Seatbacks

{ Warning

Sitting in a reclined position when the vehicle is in motion can be dangerous. Even when buckled up, the seat belts cannot do their job. The shoulder belt will not be against your body. Instead, it will be in front of you. In a crash, you Do not have a seatback reclined if To adjust a manual seatback: could go into it, receiving neck or the vehicle is moving. other injuries. 1. Lift the lever. Manual Reclining Seatbacks The lap belt could go up over The seatback will automatically your abdomen. The belt forces fold forward. would be there, not at your pelvic { Warning 2. To recline, move the seatback bones. This could cause serious rearward to the desired If either seatback is not locked, it internal injuries. position, then release the lever could move forward in a sudden to lock the seatback in place. For proper protection when the stop or crash. That could cause vehicle is in motion, have the injury to the person sitting there. 3. Push and pull on the seatback seatback upright. Then sit well Always push and pull on the to make sure it is locked. back in the seat and wear the seatbacks to be sure they are seat belt properly. locked. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

62 Seats and Restraints To return the seatback to the upright . Tilt the top of the control forward positions are linked to RKE position: to raise. transmitter 1 or 2 for automatic 1. Lift the lever fully without memory recalls. applying pressure to the Memory Seats Before storing, adjust all available seatback, and the seatback will memory feature positions. Turn the return to the upright position. ignition on and then press and 2. Push and pull on the seatback release SET; a beep will sound. to make sure it is locked. Then immediately press and hold 1, 2, or B (Exit) on the driver door Power Reclining Seatbacks until two beeps sound. To manually recall these positions, press and hold 1, 2, or B until the saved position is reached. The vehicle identifies the current driver’s RKE transmitter number (1 8). See Remote Keyless Entry Crew/Double Cab Shown, Other – (RKE) System Operation 0 37. Only Models Similar RKE transmitters 1 and 2 can be If equipped, memory seats allow two used for automatic memory recalls. drivers to store and recall their A Driver Information Center (DIC) unique seat positions for driving the welcome message indicating the vehicle, and a shared exit position transmitter number may display for for getting out of the vehicle. Other the first few ignition cycles following To recline a power seatback, feature positions may also be set, a transmitter change. For Auto if equipped: such as power mirrors, power Memory Recall to work properly, . Tilt the top of the control steering wheel, and adjustable save the positions to the memory rearward to recline. pedals, if equipped. Memory button (1 or 2) matching the RKE transmitter number displayed in the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 63 DIC welcome message. Carry the Identifying Driver Number 2. Adjust all available memory linked RKE transmitter when To identify the driver number: features to the desired driving entering the vehicle. position. 1. Start the vehicle with the other Vehicle Personalization Settings key or RKE transmitter. The 3. Press and release SET; a beep will sound. . To have the Auto Memory Recall DIC should display the driver movement begin when the number; 1 or 2. Turn the 4. Immediately press and hold the vehicle is started, select the ignition off and remove the key 1 or 2 memory button matching Settings menu, then Vehicle, or RKE transmitter from the the above DIC welcome then Comfort and Convenience, vehicle. message until two beeps and then Auto Memory Recall. 2. Start the vehicle with the initial sound. Select On or Off. See “Auto key or RKE transmitter. The If too much time passes Memory Recall” later in this DIC should display the other between releasing SET and section. driver number not shown in pressing 1, the memory . To begin Easy Exit Recall step 1. position will not be saved and two beeps will not sound. movement when the ignition is Saving Memory Positions turned off and the driver door is Repeat Steps 3 and 4. opened, or when the ignition is Read these instructions completely 1 or 2 corresponds to the driver before saving memory positions. turned off with the driver door number. See “Identifying Driver already opened, select the To save preferred driving positions Number” in this section. Settings menu, then Vehicle, 1 and 2: then Comfort and Convenience, 5. Repeat Steps 1–4 for a second and then Easy Exit Options. 1. Turn the ignition on or to ACC/ driver using 1 or 2. ACCESSORY. Select On or Off. See “Easy Exit To save the position for B and Recall later in this section. ” A DIC welcome message may easy exit features, repeat Steps 1–4 be displayed indicating number . See Vehicle Personalization using B. This stores the position 0 1 or 2 for memory recalls. 165 for additional setting for getting out of the vehicle. information. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

64 Seats and Restraints Save preferred memory feature automatically recalled when the If the stored memory seat position positions to both 1 and 2 if you are ignition is turned on, or turned from does not automatically recall or the only driver. off to ACC/ACCESSORY. RKE recalls to the wrong positions, the transmitters 3–8 will not provide driver’s RKE transmitter number Manually Recalling Memory automatic memory recalls. (1 or 2) may not match the memory Positions To turn Auto Memory Recall on or button number that positions were Press and hold 1, 2, or B to recall off, see "Vehicle Personalization saved to. Try storing the position to the previously stored memory Settings" previously in this section the other memory button or try the positions. and Vehicle Personalization 0 165. other RKE transmitter. To stop manual recall movement, The transmission must be in Easy Exit Recall release 1, 2, or B. Recall can also P (Park) to initiate Auto Memory Easy Exit Recall is not linked to an be stopped by pressing a power Recall. Auto Memory Recall will RKE transmitter. The position stored seat, SET, power mirror control, complete if the vehicle is shifted out to B is used for all drivers. To turn power steering wheel control, of P (Park) prior to reaching the Easy Exit Recall on or off, see or adjustable pedal control, stored memory position. "Vehicle Personalization Settings" if memory equipped. The driver or To stop Auto Memory Recall previously in this section and passenger side mirror must be movement, turn the ignition off or Vehicle Personalization 0 165. selected. press any of the following memory If turned on, the position saved to Auto Memory Recall controls: B is automatically recalled when The vehicle identifies the number of . Power seat one of the following occurs: the current driver’s RKE transmitter . Memory SET, 1, 2, or B . The vehicle is turned off and the (1–8). See Remote Keyless Entry driver door is opened within a (RKE) System Operation 0 37. If the . Power mirror, with the driver or short time. RKE transmitter is 1 or 2, and Auto passenger side mirror selected Memory Recall is programmed on in . The vehicle is turned off with the . Power steering wheel, driver door open. vehicle personalization, the if equipped positions saved to the same memory button number 1 or 2 are . Adjustable pedals, if equipped GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 65 To stop Easy Exit Recall movement, Heated and Ventilated press any of the following memory controls: Front Seats . Power seat { Warning . Memory SET, 1, 2, or B If temperature change or pain to . Power mirror, with the driver or the skin cannot be felt, the seat passenger side mirror selected heater may cause burns. To . Power steering wheel, reduce the risk of burns, use care if equipped when using the seat heater, especially for long periods of . Adjustable pedals, if equipped time. Do not place anything on Heated and Ventilated Seat Obstructions the seat that insulates against Buttons Shown, Heated Seat If something has blocked the driver heat, such as a blanket, cushion, Buttons Similar seat and/or power steering wheel cover, or similar item. This may If equipped, the buttons are on the while recalling a memory position, cause the seat heater to center stack. To operate, the engine the recall may stop. Remove the overheat. An overheated seat must be running. obstruction and try the recall again. heater may cause a burn or may If the memory position still does not damage the seat. Press I to heat the driver or recall, see your dealer for service. passenger seatback only. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

66 Seats and Restraints Press J to heat the driver or Remote Start Auto Heated and Rear Seats passenger seat cushion and Ventilated Seats seatback. During a remote start, the heated or Rear Seats (Double Cab ventilated seats can be turned on Press C to ventilate the driver or automatically. When it is cold Full Bench) passenger seat. outside, the heated seats turn on, Rear Seat Reminder (Full The indicator light on the button and when it is hot outside the Bench Only) comes on when this feature is on. ventilated seats turn on. The heated or ventilated seats are canceled If equipped, the message REAR Press the button once for the when the ignition is turned on. Press SEAT REMINDER LOOK IN REAR highest setting. With each press of the heated or ventilated seat button SEAT displays under certain the button, the seat will change to to use the heated or ventilated seats conditions indicating there may be the next lower setting, and then to after the vehicle is started. an item or passenger in the rear the off setting. The indicator lights seat. Check before exiting the next to the buttons indicate three for The heated or ventilated seat vehicle. the highest setting and one for the indicator lights do not turn on during lowest. If the heated seats are on a remote start. This feature will activate when a second row door is opened while high for an extended time, their level The temperature performance of an may automatically be lowered. the vehicle is on or up to 10 minutes unoccupied seat may be reduced. before the vehicle is turned on. This is normal. There will be an alert when the The heated or ventilated seats will vehicle is turned off. The alert does not turn on during a remote start not directly detect objects in the rear unless they are enabled in the seat; instead, under certain vehicle personalization menu. conditions, it detects when a rear See Remote Vehicle Start 0 39 and door is opened and closed, Vehicle Personalization 0 165. indicating that there may be something in the rear seat. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 67 The feature is active only once each To unfold the seat: time the vehicle is turned on and off, 1. Push the seat cushion and will require reactivation by rearward while pulling the opening and closing the second row release strap loop under the doors. There may be an alert even seat cushion. Pull the seat when there is nothing in the rear cushion down until it latches. seat; for example, if a child entered the vehicle through the rear door 2. Pull up on the seat cushion to and left the vehicle without the make sure it is locked in place. vehicle being shut off. Make sure the seat belts are The feature can be turned on or off. not twisted or caught in the See Vehicle Personalization 0 165. seat cushion. Folding the Rear Seat To fold the seat: 1. Pull up on the front of the seat { Warning Caution cushion while pulling down on A seat belt that is improperly the release strap loop under routed, not properly attached, the seat cushion. Folding a rear seat with the seat or twisted will not provide the belts still fastened may cause 2. Pull the seat cushion up until it protection needed in a crash. The damage to the seat or the seat latches with the seatback. person wearing the belt could be belts. Always unbuckle the seat 3. Pull forward on the seat seriously injured. After raising the belts and return them to their cushion to make sure it is rear seatback, always check to be normal stowed position before locked in place. sure that the seat belts are folding a rear seat. properly routed and attached, and are not twisted. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

68 Seats and Restraints Rear Seats (Split Bench) { Warning Folding the Rear Seat A seat belt that is improperly Either side of the rear seat can be routed, not properly attached, folded for added cargo space. or twisted will not provide the protection needed in a crash. The Caution person wearing the belt could be seriously injured. After raising the Folding a rear seat with the seat rear seatback, always check to be belts still fastened may cause sure that the seat belts are damage to the seat or the seat properly routed and attached, and belts. Always unbuckle the seat are not twisted. belts and return them to their To fold the seat, slowly pull the seat normal stowed position before cushion up. folding a rear seat. To return the seat to the normal seating position, slowly pull the seat Make sure that nothing is on the cushion down. seat cushion. Make sure the seat belts are not twisted or caught in the seat cushion. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 69 Seat Belts front passenger seat is unoccupied, Warning (Continued) only the driver seat belt must be This section describes how to use buckled to unlock the shift lever. seat belts properly, and some things passengers to ride in any area of This system may not allow the not to do. the vehicle that is not equipped with seats and seat belts. vehicle to shift out of P (Park) if an object — such as a briefcase, { Warning Always wear a seat belt, and handbag, grocery bag, laptop, check that all passenger(s) are or other electronic device — is on Do not let anyone ride where a restrained properly too. the front outboard passenger seat. seat belt cannot be worn properly. If this happens, remove the object In a crash, if you or your from the seat or buckle the passenger(s) are not wearing This vehicle has indicators as a reminder to buckle the seat belts. seat belt. seat belts, injuries can be much See Seat Belt Reminders 0 146. worse than if you are wearing If the driver or front outboard passenger unbuckles their seat belt seat belts. You can be seriously Seat Belt Assurance System while driving, the seat belt reminder injured or killed by hitting things This vehicle may have the Seat Belt chime and light(s) will come on. See inside the vehicle harder or by Assurance System, which prevents Seat Belt Reminders 0 146. being ejected from the vehicle. In the vehicle from shifting out of addition, anyone who is not The Seat Belt Assurance System P (Park). A message displays in the will time out 30 seconds after the buckled up can strike other Driver Information Center (DIC) passengers in the vehicle. brake pedal is initially pressed. indicating the shift lever is locked A message displays in the DIC It is extremely dangerous to ride when the brake pedal is applied and indicating the shift lever is unlocked in a cargo area, inside or outside the seat belts for either the driver or allowing the vehicle to be shifted out front outboard passenger are not of a vehicle. In a collision, of P (Park). See “Seat Belts” and buckled. The vehicle will not shift passengers riding in these areas “Child Restraints” in the Index for are more likely to be seriously out of P (Park). Buckle the seat information about the importance of belts to unlock the shift lever. If the injured or killed. Do not allow proper restraint use. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

70 Seats and Restraints This system may not function when worn properly, your strongest Also, in nearly all states and in properly if the airbag readiness light bones take the forces from the seat all Canadian provinces, the law is on. See Airbag Readiness Light belts. That is why wearing seat belts requires wearing seat belts. 0 147. makes such good sense. Why Seat Belts Work Questions and Answers About How to Wear Seat Belts Seat Belts Properly Q: Will I be trapped in the vehicle This section is only for people of after a crash if I am wearing a adult size. seat belt? There are special things to know A: You could be — whether you are about seat belts and children, and wearing a seat belt or not. Your there are different rules for smaller chance of being conscious children and infants. If a child will be during and after a crash, so you riding in the vehicle, see Older can unbuckle and get out, is Children 0 92 or Infants and Young much greater if you are belted. Children 0 94. Follow those rules for everyone's protection. Q: If my vehicle has airbags, why should I have to wear seat It is very important for all occupants to buckle up. Statistics show that When riding in a vehicle, you travel belts? unbelted people are hurt more often as fast as the vehicle does. If the A: Airbags are supplemental in crashes than those who are vehicle stops suddenly, you keep systems only. They work with wearing seat belts. going until something stops you. seat belts — not instead of them. It could be the windshield, the Whether or not an airbag is There are important things to know instrument panel, or the seat belts! provided, all occupants still have about wearing a seat belt properly. When you wear a seat belt, you and to buckle up to get the most the vehicle slow down together. protection. There is more time to stop because you stop over a longer distance and, GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 71 . Wear the shoulder belt over the then all seating positions in the shoulder and across the chest. vehicle have a lap-shoulder belt These parts of the body are best except for the center front able to take belt restraining passenger position (if equipped), forces. The shoulder belt locks if which has a lap belt. See Lap Belt there is a sudden stop or crash. 0 75. The following instructions explain { Warning how to wear a lap-shoulder belt properly. You can be seriously injured, or even killed, by not wearing 1. Adjust the seat, if the seat is your seat belt properly. adjustable, so you can sit up straight. To see how, see . Sit up straight and always keep . Never allow the lap or “Seats” in the Index. your feet on the floor in front shoulder belt to become of you. loose or twisted. . Always use the correct buckle . Never wear the shoulder for your seating position. belt under both arms or . Wear the lap part of the belt low behind your back. and snug on the hips, just . Never route the lap or touching the thighs. In a crash, shoulder belt over an this applies force to the strong armrest. pelvic bones and you would be less likely to slide under the lap belt. If you slid under it, the belt Lap-Shoulder Belt would apply force on your abdomen. This could cause If the vehicle is a regular cab, then serious or even fatal injuries. all seating positions in the vehicle have a lap-shoulder belt. If the 2. Pick up the latch plate and pull vehicle is a double or crew cab, the belt across you. Do not let it get twisted. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

72 Seats and Restraints The lap-shoulder belt may lock 3. Push the latch plate into the if you pull the belt across you buckle until it clicks. very quickly. If this happens, let Pull up on the latch plate to the belt go back slightly to make sure it is secure. If the unlock it. Then pull the belt belt is not long enough, see across you more slowly. Seat Belt Extender 0 75. If the shoulder portion of a Position the release button on passenger belt is pulled out all the buckle so that the seat belt the way, the child restraint could be quickly unbuckled if locking feature may be necessary. engaged. If this happens, let the belt go back all the way 4. If equipped with a shoulder belt and start again. If the webbing locks in the latch height adjuster, move it to the height that is right for you. See Engaging the child restraint plate before it reaches the “Shoulder Belt Height Adjuster” locking feature in the front buckle, tilt the latch plate flat to unlock. later in this section for outboard seating position may instructions on use and affect the passenger sensing important safety information. system, if equipped. See Passenger Sensing System 0 86. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 73 To unlatch the belt, push the button could reduce the effectiveness of on the buckle. The belt should the seat belt in a crash. See How to return to its stowed position. Wear Seat Belts Properly 0 70. Always stow the seat belt slowly. If the seat belt webbing returns quickly to the stowed position, the retractor may lock and cannot be pulled out. If this happens, pull the seat belt straight out firmly to unlock the webbing, and then release it. If the webbing is still locked in the retractor, see your dealer. 5. To make the lap part tight, pull Before a door is closed, be sure the up on the shoulder belt. seat belt is out of the way. If a door is slammed against a seat belt, damage can occur to both the seat belt and the vehicle. Push down on the release button to move the height adjuster to the Shoulder Belt Height Adjuster desired position. The vehicle has a shoulder belt Move the adjuster up by pushing up height adjuster for the driver and on the shoulder belt guide. front outboard passenger seating After the adjuster is set to the positions. desired position, try to move it down Adjust the height so the shoulder without pushing the release button portion of the belt is on the shoulder to make sure it has locked into and not falling off of it. The belt position. should be close to, but not contacting, the neck. Improper shoulder belt height adjustment GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

74 Seats and Restraints Seat Belt Pretensioners Do not sit on the outboard seat belt while entering or exiting the vehicle This vehicle has seat belt or at any time while sitting in the pretensioners for front outboard seat. Sitting on the seat belt can occupants. Although the seat belt damage the webbing and hardware. pretensioners cannot be seen, they are part of the seat belt assembly. Rear Seat Belt Comfort Guides They can help tighten the seat belts during the early stages of a Rear seat belt comfort guides may moderate to severe frontal, near provide added seat belt comfort for frontal, or rear crash if the threshold older children who have outgrown conditions for pretensioner booster seats and for some adults. activation are met. And, if your When installed on a shoulder belt, the comfort guide positions the vehicle has side impact airbags, A pregnant woman should wear a shoulder belt away from the neck seat belt pretensioners can help lap-shoulder belt, and the lap and head. tighten the seat belts in a side portion should be worn as low as crash. If the vehicle has rollover Comfort guides are available possible, below the rounding, roof-rail airbags, seat belt through your dealer for the rear throughout the pregnancy. pretensioners can help tighten the outboard seating positions. The best way to protect the fetus is seat belts in a rollover event. Instructions are included with the to protect the mother. When a seat guide. Pretensioners work only once. If the belt is worn properly, it is more likely pretensioners activate in a crash, that the fetus will not be hurt in a the pretensioners and probably Seat Belt Use During crash. For pregnant women, as for other parts of the vehicle's seat belt Pregnancy anyone, the key to making seat system will need to be replaced. belts effective is wearing them Seat belts work for everyone, See Replacing Seat Belt System properly. including pregnant women. Like all Parts after a Crash 0 76. occupants, they are more likely to be seriously injured if they do not wear seat belts. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 75 Lap Belt take the heaviest coat you will wear, so the extender will be long enough This section is only for the lap belt. for you. To help avoid personal To learn how to wear a lap-shoulder injury, do not let someone else use 0 belt, see Lap-Shoulder Belt 71. it, and use it only for the seat it is The vehicle may have a center made to fit. The extender has been seating position with a lap seat belt. designed for adults. Never use it for The lap seat belt does not have a securing child restraints. For more retractor. information on the proper use and fit of seat belt extenders see the instruction sheet that comes with the extender. To make the belt shorter, pull its free end as shown until the belt is snug. Safety System Check If the belt is not long enough, see Periodically check the seat belt Seat Belt Extender 0 75. reminder, seat belts, buckles, latch plates, retractors, shoulder belt Make sure the release button on the height adjusters (if equipped), and buckle is positioned so you would seat belt anchorages to make sure be able to unbuckle the seat belt they are all in working order. Look quickly if necessary. for any other loose or damaged seat belt system parts that might keep a To make the belt longer, tilt the latch Seat Belt Extender seat belt system from performing properly. See your dealer to have it plate and pull it along the belt. If the vehicle's seat belt will fasten repaired. Torn or frayed seat belts around you, you should use it. Buckle, position, and release it the may not protect you in a crash. same way as the lap part of a But if a seat belt is not long enough, They can rip apart under impact lap-shoulder belt. your dealer will order you an forces. If a belt is torn or frayed, extender. When you go in to order it, have it replaced immediately. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

76 Seats and Restraints Make sure the seat belt reminder cleaned with mild soap and water. After a minor crash, replacement of light is working. See Seat Belt Ensure there is not excessive dust seat belts may not be necessary. Reminders 0 146. or debris in the mechanism. If dust But the seat belt assemblies that Keep seat belts clean and dry. See or debris exists in the system please were used during any crash may Seat Belt Care 0 76. see the dealer. Parts may need to have been stressed or damaged. be replaced to ensure proper See your dealer to have the seat functionality of the system. belt assemblies inspected or Seat Belt Care replaced. Keep belts clean and dry. Replacing Seat Belt New parts and repairs may be System Parts after a necessary even if the seat belt { Warning Crash system was not being used at the time of the crash. Do not bleach or dye seat belt webbing. It may severely weaken { Warning Have the seat belt pretensioners the webbing. In a crash, they checked if the vehicle has been in a crash, or if the airbag readiness light might not be able to provide A crash can damage the seat belt stays on after you start the vehicle adequate protection. Clean and system in the vehicle. A damaged seat belt system may not properly or while you are driving. See Airbag rinse seat belt webbing only with Readiness Light 0 147. mild soap and lukewarm water. protect the person using it, Allow the webbing to dry. resulting in serious injury or even death in a crash. To help make sure the seat belt systems are Seat belts should be properly cared working properly after a crash, for and maintained. have them inspected and any Seat belt hardware should be kept necessary replacements made as dry and free of dust or debris. As soon as possible. necessary exterior hard surfaces and seat belt webbing may be lightly GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 77 Airbag System For frontal airbags, the word AIRBAG is on the center of the Warning (Continued) The vehicle has the following steering wheel for the driver and on airbags: the instrument panel for the front work with seat belts, not replace outboard passenger. them. Also, airbags are not . A frontal airbag for the driver designed to inflate in every crash. . A frontal airbag for the front For seat-mounted side impact In some crashes seat belts are outboard passenger airbags, the word AIRBAG is on the the only restraint. See When seatback closest to the door. 0 The vehicle may have the following Should an Airbag Inflate? 80. For roof-rail airbags, the word airbags: Wearing your seat belt during a AIRBAG is on the ceiling or trim. . A seat-mounted side impact crash helps reduce your chance airbag for the driver Airbags are designed to supplement of hitting things inside the vehicle the protection provided by seat or being ejected from it. Airbags A seat-mounted side impact . belts. Even though today's airbags are supplemental restraints to airbag for the front outboard “ ” are also designed to help reduce the seat belts. Everyone in the passenger the risk of injury from the force of an vehicle should wear a seat belt . A roof-rail airbag for the driver inflating bag, all airbags must inflate properly, whether or not there is and the passenger seated very quickly to do their job. an airbag for that person. directly behind the driver Here are the most important things . A roof-rail airbag for the front to know about the airbag system: outboard passenger and the person seated directly behind { Warning { Warning the front outboard passenger Because airbags inflate with great You can be severely injured or All of the airbags in the vehicle will force and faster than the blink of killed in a crash if you are not have the word AIRBAG on the trim an eye, anyone who is up wearing your seat belt, even with or on a label near the deployment against, or very close to, any airbags. Airbags are designed to opening. airbag when it inflates can be (Continued) (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

78 Seats and Restraints Where Are the Airbags? Warning (Continued) { Warning

seriously injured or killed. Do not Children who are up against, sit unnecessarily close to any or very close to, any airbag when airbag, as you would be if sitting it inflates can be seriously injured on the edge of the seat or leaning or killed. Always secure children forward. Seat belts help keep you properly in the vehicle. To read in position before and during a how, see Older Children 0 92 or crash. Always wear a seat belt, Infants and Young Children 0 94. even with airbags. The driver should sit as far back as possible while still maintaining control of the vehicle. The seat belts and the front outboard passenger airbags are most effective when The driver frontal airbag is in the you are sitting well back and center of the steering wheel. upright in the seat with both feet on the floor. There is an airbag readiness light on the instrument cluster, which Occupants should not lean on or shows the airbag symbol. sleep against the door or side windows in seating positions with The system checks the airbag seat-mounted side impact airbags electrical system for malfunctions. and/or roof-rail airbags. The light tells you if there is an electrical problem. See Airbag Readiness Light 0 147 for more information. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 79

The front outboard passenger Driver Side Shown, Passenger Driver Side Crew Cab Shown, frontal airbag is in the passenger Side Similar Passenger Side Double and side instrument panel. If the vehicle has seat-mounted side Regular Cabs Similar impact airbags for the driver and If the vehicle has roof-rail airbags front outboard passenger, they are for the driver, front outboard in the side of the seatbacks closest passenger, and second row to the door. outboard passengers, they are in the ceiling above the side windows.

{ Warning

If something is between an occupant and an airbag, the airbag might not inflate properly or it might force the object into (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

80 Seats and Restraints When Should an Airbag It depends on what is hit, the Warning (Continued) direction of the impact, and how Inflate? quickly the vehicle slows down. that person causing severe injury This vehicle is equipped with or even death. The path of an 0 Frontal airbags may inflate at airbags. See Airbag System 77. different crash speeds depending on inflating airbag must be kept Airbags are designed to inflate if the clear. Do not put anything whether the vehicle hits an object impact exceeds the specific airbag straight on or at an angle, and between an occupant and an system's deployment threshold. airbag, and do not attach or put whether the object is fixed or Deployment thresholds are used to moving, rigid or deformable, narrow anything on the steering wheel predict how severe a crash is likely or wide. hub or on or near any other to be in time for the airbags to airbag covering. inflate and help restrain the Frontal airbags are not intended to inflate during vehicle rollovers, in Do not use seat accessories that occupants. The vehicle has electronic sensors which help the rear impacts, or in many side block the inflation path of a airbag system determine the impacts. seat-mounted side impact airbag. severity of the impact. Deployment In addition, if the GVWR (Gross Never secure anything to the roof thresholds can vary with specific Vehicle Weight Rating) is at or of a vehicle with roof-rail airbags vehicle design. below 3 855 kg (8,500 lb), the by routing a rope or tie‐down Frontal airbags are designed to vehicle has advanced technology through any door or window inflate in moderate to severe frontal frontal airbags. You can find the opening. If you do, the path of an or near frontal crashes to help GVWR on the Certification/Tire label inflating roof-rail airbag will be reduce the potential for severe on the center pillar of the vehicle. blocked. injuries, mainly to the driver's or See Vehicle Load Limits 0 248 for front outboard passenger's head more information. and chest. Advanced technology frontal airbags Whether the frontal airbags will or adjust the restraint according to should inflate is not based primarily crash severity. Vehicles with on how fast the vehicle is traveling. advanced technology frontal airbags have a seat position sensor that GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 81 enables the sensing system to addition, these roof-rail airbags are roll over on its side. The roof-rail monitor the position of the driver designed to inflate during a rollover airbags are not designed to inflate in seat. The seat position sensor or in a severe frontal impact. The rear impacts. provides information that is used to roof-rail airbags are not designed to Vehicles with a GVWR above adjust the deployment of the driver inflate in rear impacts. Both roof-rail 4 536 kg (10,000 lb) may or may not frontal airbag. airbags will inflate when either side be equipped with roof-rail airbags. If the GVWR is at or below 4 536 kg of the vehicle is struck or if the These roof-rail airbags, if equipped, (10,000 lb), the vehicle has sensing system predicts that the are designed to inflate in moderate seat-mounted side impact airbags. vehicle is about to roll over on its to severe side crashes depending Vehicles with a GVWR above side, or in a severe frontal impact. on the location of the impact. Both 4 536 kg (10,000 lb) may or may not Vehicles with a GVWR above roof-rail airbags will inflate when have seat-mounted side impact 3 855 kg (8,500 lb) up to and either side of the vehicle is struck. airbags. Seat-mounted side impact including 4 536 kg (10,000 lb) also In addition, these roof-rail airbags airbags, if equipped, are designed have roof-rail airbags. These are designed to inflate in a severe to inflate in moderate to severe side roof-rail airbags are designed to frontal impact. If the vehicle has crashes depending on the location inflate in moderate to severe side single rear wheels and has a of the impact. Seat-mounted side crashes depending on the location factory-installed pickup box and impact airbags are not designed to of the impact. Both roof-rail airbags roof-rail airbags, the roof-rail airbags inflate in frontal impacts, near frontal will inflate when either side of the are rollover capable. If the vehicle impacts, rollovers, or rear impacts. vehicle is struck. In addition, these has dual rear wheels, or is sold as A seat-mounted side impact airbag roof-rail airbags are designed to an incomplete vehicle, as a chassis is designed to inflate on the side of inflate in a severe frontal impact. cab, or with the pickup box the vehicle that is struck. The roof-rail airbags are also removed, and has roof-rail airbags, Vehicles with a GVWR at or below rollover capable except on models the roof-rail airbags are not rollover 3 855 kg (8,500 lb) have roof-rail sold as an incomplete vehicle with capable. If the airbags are rollover airbags. These roof-rail airbags are the pickup box removed. If the capable, both roof-rail airbags will designed to inflate in moderate to roof-rail airbags are rollover also inflate if the sensing system severe side crashes depending on capable, both roof-rail airbags will predicts that the vehicle is about to the location of the impact. In also inflate if the sensing system predicts that the vehicle is about to GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

82 Seats and Restraints roll over on its side. The roof-rail moderate to severe side collisions, What Will You See after airbags are not designed to inflate in even belted occupants can contact rear impacts. the inside of the vehicle. an Airbag Inflates? In any particular crash, no one can Airbags supplement the protection For an eAssist vehicle, see the say whether an airbag should have provided by seat belts by Silverado/Sierra eAssist inflated simply because of the distributing the force of the impact supplement. vehicle damage or repair costs. more evenly over the After frontal and seat-mounted side occupant's body. impact airbags inflate, they quickly What Makes an Airbag Rollover capable roof-rail airbags deflate, so quickly that some people Inflate? are designed to help contain the may not even realize the airbags head and chest of occupants in the inflated. Roof-rail airbags may still In a deployment event, the sensing outboard seating positions in the be at least partially inflated for some system sends an electrical signal first and second rows. The rollover time after they inflate. Some triggering a release of gas from the capable roof-rail airbags are components of the airbag module inflator. Gas from the inflator fills the designed to help reduce the risk of may be hot for several minutes. For airbag causing the bag to break out full or partial ejection in rollover location of the airbags, see Where of the cover. The inflator, the airbag, 0 events, although no system can Are the Airbags? 78. and related hardware are all part of prevent all such ejections. The parts of the airbag that come the airbag module. But airbags would not help in many into contact with you may be warm, For airbag locations, see Where Are types of collisions, primarily but not too hot to touch. There may the Airbags? 0 78. because the occupant's motion is be some smoke and dust coming not toward those airbags. See When from the vents in the deflated How Does an Airbag Should an Airbag Inflate? 0 80. airbags. Airbag inflation does not Restrain? prevent the driver from seeing out of Airbags should never be regarded the windshield or being able to steer In moderate to severe frontal or as anything more than a supplement the vehicle, nor does it prevent near frontal collisions, even belted to seat belts. people from leaving the vehicle. occupants can contact the steering wheel or the instrument panel. In GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 83 off and then on again, the fuel In many crashes severe enough to { Warning system will return to normal inflate the airbag, windshields are operation; the doors can be locked, broken by vehicle deformation. When an airbag inflates, there the interior lamps can be turned off, Additional windshield breakage may may be dust in the air. This dust and the hazard warning flashers can also occur from the front outboard could cause breathing problems be turned off using the controls for passenger airbag. for people with a history of those features. If any of these . Airbags are designed to inflate asthma or other breathing trouble. systems are damaged in the crash To avoid this, everyone in the only once. After an airbag they may not operate as normal. inflates, you will need some new vehicle should get out as soon as parts for the airbag system. it is safe to do so. If you have { Warning If you do not get them, the breathing problems but cannot airbag system will not be there get out of the vehicle after an A crash severe enough to inflate to help protect you in another airbag inflates, then get fresh air the airbags may have also crash. A new system will include by opening a window or a door. damaged important functions in airbag modules and possibly If you experience breathing the vehicle, such as the fuel other parts. The service manual problems following an airbag system, brake and steering for the vehicle covers the need deployment, you should seek systems, etc. Even if the vehicle to replace other parts. medical attention. appears to be drivable after a . The vehicle has a crash sensing moderate crash, there may be and diagnostic module which The vehicle has a feature that may concealed damage that could records information after a automatically unlock the doors, turn make it difficult to safely operate crash. See Vehicle Data on the interior lamps and hazard the vehicle. Recording and Privacy 0 477 warning flashers, and shut off the Use caution if you should attempt and Event Data Recorders 0 fuel system after the airbags inflate. to restart the engine after a crash 477. The feature may also activate, has occurred. . Let only qualified technicians without airbag inflation, after an work on the airbag systems. event that exceeds a predetermined Improper service can mean that threshold. After turning the ignition GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

84 Seats and Restraints an airbag system will not work This switch should only be turned to sometimes must ride in the front properly. See your dealer for the off position if the person in the because no space is available in service. front outboard passenger position is the rear seat(s) of my vehicle; or a member of a passenger risk group . The child has a medical Airbag On-Off Switch identified by the national condition which, according to the government as follows: If the passenger side instrument child's physician, makes it panel endcap has the switch Infant. An infant (less than 1 year necessary for the child to ride in pictured in the following illustration, old) must ride in the front seat the front seat so that the driver the vehicle has an airbag on-off because: can constantly monitor the child's condition. switch that you can use to manually . My vehicle has no rear seat; turn on or off the front outboard . My vehicle has a rear seat too Medical Condition. A passenger passenger frontal airbag. See has a medical condition which, Instrument Panel 0 6. small to accommodate a rear-facing infant seat; or according to his or her physician: . The infant has a medical . Causes the passenger airbag to condition which, according to the pose a special risk for the infant's physician, makes it passenger; and necessary for the infant to ride in . Makes the potential harm from the front seat so that the driver the passenger airbag in a crash can constantly monitor the greater than the potential harm child's condition. from turning off the airbag and allowing the passenger, even if Child age 1 to 12. A child belted, to hit the instrument age 1 to 12 must ride in the front If the vehicle does not have an panel or windshield in a crash. seat because: airbag on-off switch, it may have a passenger sensing system. See . My vehicle has no rear seat; 0 Passenger Sensing System 86. . Although children ages 1 to 12 ride in the rear seat(s) whenever possible, children ages 1 to 12 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 85 To turn off the front outboard { Warning passenger frontal airbag, insert the Warning (Continued) ignition key into the switch, push in, If the front outboard passenger and move the switch to the off passenger frontal airbag could frontal airbag is turned off for a position. inflate even though the airbag person who is not in a risk group on-off switch is turned off. identified by the national The word OFF or the off symbol will come on in the passenger airbag To help avoid injury to yourself or government, that person will not others, have the vehicle serviced have the extra protection of an status indicator located in the overhead console to let you know right away. See Airbag Readiness airbag. In a crash, the airbag will that the front outboard passenger Light 0 147 for more information, not be able to inflate and help frontal airbag is off, after the system including important safety protect the person sitting there. check is completed. The airbag off information. Do not turn off the front outboard light will come on and stay on to let passenger frontal airbag unless you know that the front outboard the person sitting there is in a risk passenger frontal airbag is off. See group. Airbag On-Off Light 0 147. The front outboard passenger airbag will remain off until you turn it back on again.

{ Warning

If the airbag readiness light ever comes on and stays on, it means To turn the front outboard passenger that something may be wrong frontal airbag on again, insert the with the airbag system. For ignition key into the switch, push in, example, the front outboard and move the switch to the on (Continued) position. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

86 Seats and Restraints The front outboard passenger The passenger sensing system frontal airbag is now enabled works with sensors that are part of (may inflate). See Airbag On-Off the front outboard passenger seat Light 0 147. and seat belt. The sensors are designed to detect the presence of Passenger Sensing a properly seated occupant and System United States determine if the front outboard passenger frontal airbag should be If the vehicle has one of the allowed to inflate or not. following indicators, then the vehicle According to accident statistics, has a passenger sensing system for children are safer when properly the front outboard passenger secured in a rear seat in the correct position, unless there is an airbag child restraint for their weight on-off switch on the instrument and size. panel endcap. If there is an airbag Canada and Mexico on-off switch, the vehicle does not Whenever possible, children aged have a passenger sensing system. The words ON and OFF, or the 12 and under should be secured in See Airbag On-Off Switch 0 84 for symbol for on and off, will be visible a rear seating position. more information. during the system check. When the system check is complete, either the Never put a rear-facing child seat in The passenger airbag status word ON or OFF, or the symbol for the front. This is because the risk to the rear-facing child is so great, indicator will light on the overhead on or off, will be visible. See console when the vehicle is started. Passenger Airbag Status Indicator if the airbag inflates. 0 149. { Warning The passenger sensing system turns off the front outboard A child in a rear-facing child passenger frontal airbag under restraint can be seriously injured certain conditions. No other airbag or killed if the passenger frontal is affected by the passenger sensing system. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 87 When the passenger sensing Warning (Continued) Warning (Continued) system has turned off the front outboard passenger frontal airbag, airbag inflates. This is because secure child restraints in the rear the off indicator will light and stay lit the back of the rear-facing child seat. Consider using another as a reminder that the airbag is off. restraint would be very close to vehicle to transport the child See Passenger Airbag Status the inflating airbag. A child in a when a rear seat is not available. Indicator 0 149. forward-facing child restraint can be seriously injured or killed if the The passenger sensing system is If the vehicle does not have a rear designed to turn on the front passenger frontal airbag inflates seat that will accommodate a outboard passenger frontal airbag and the passenger seat is in a rear-facing child restraint, a anytime the system senses that a forward position. rear-facing child restraint should not person of adult size is sitting Even if the passenger sensing be installed in the vehicle, even if properly in the front outboard system has turned off the the airbag is off. passenger seat. passenger frontal airbag, no The passenger sensing system is When the passenger sensing system is fail-safe. No one can designed to turn off the front system has allowed the airbag to be guarantee that an airbag will not outboard passenger frontal airbag if: enabled, the on indicator will light deploy under some unusual . The front outboard passenger and stay lit as a reminder that the circumstance, even though the seat is unoccupied. airbag is active. airbag is turned off. . The system determines an infant For some children, including Never put a rear-facing child is present in a child restraint. children in child restraints, and for restraint in the front seat, even if very small adults, the passenger the airbag is off. If securing a . A front outboard passenger sensing system may or may not turn takes his/her weight off of the forward-facing child restraint in off the front outboard passenger seat for a period of time. the front outboard passenger frontal airbag, depending upon the seat, always move the seat as far . There is a critical problem with person's seating posture and body back as it will go. It is better to the airbag system or the build. Everyone in the vehicle who passenger sensing system. has outgrown child restraints should (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

88 Seats and Restraints wear a seat belt properly — whether 2. Remove the child restraint from 5. If, after reinstalling the child or not there is an airbag for that the vehicle. restraint and restarting the person. 3. Remove any additional items vehicle, the on indicator is still from the seat such as blankets, lit, turn the vehicle off. Then { Warning cushions, seat covers, seat slightly recline the vehicle heaters, or seat massagers. seatback and adjust the seat If the airbag readiness light ever cushion, if adjustable, to make comes on and stays on, it means 4. Reinstall the child restraint sure that the vehicle seatback that something may be wrong following the directions is not pushing the child with the airbag system. To help provided by the child restraint restraint into the seat cushion. avoid injury to yourself or others, manufacturer and refer to Securing Child Restraints (With Also make sure the child have the vehicle serviced right the Seat Belt in the Center restraint is not trapped under away. See Airbag Readiness 0 the vehicle head restraint. 0 Front Seat) 114 or Securing Light 147 for more information, Child Restraints (With the Seat If this happens, adjust the head including important safety restraint. See Head Restraints Belt in the Front Passenger 0 information. Seat) 0 115 or Securing Child 58. Restraints (With the Seat Belt 6. Restart the vehicle. 0 If the On Indicator Is Lit for a in the Rear Seat) 111. The passenger sensing system may Child Restraint Make sure the seat belt or may not turn off the airbag for a The passenger sensing system is retractor is locked by pulling child in a child restraint depending designed to turn off the front the shoulder belt all the way upon the child’s size. It is better to outboard passenger frontal airbag if out of the retractor when secure child restraints in the rear the system determines that an infant installing the child restraint, seat. Consider using another is present in a child restraint. If a even if the child restraint is vehicle to transport the child when a child restraint has been installed equipped with a seat belt lock rear seat is not available. Never put and the on indicator is lit: off. When the retractor lock is a rear-facing child restraint in the set, the belt can be tightened front seat, even if the on indicator is 1. Turn the vehicle off. but not pulled out of the not lit. retractor. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 89 If the Off Indicator Is Lit for an 2. Remove any additional material Adult-Sized Occupant from the seat, such as { Warning blankets, cushions, seat covers, seat heaters, or seat If the front outboard passenger massagers. airbag is turned off for an adult-sized occupant, the airbag 3. Place the seatback in the fully will not be able to inflate and help upright position. protect that person in a crash, 4. Have the person sit upright in resulting in an increased risk of the seat, centered on the seat serious injury or even death. An cushion, with legs comfortably adult-sized occupant should not extended. ride in the front outboard 5. If the shoulder portion of the passenger seat, if the passenger belt is pulled out all the way, airbag off indicator is lit. the child restraint locking feature will be engaged. This If a person of adult size is sitting in Additional Factors Affecting may unintentionally cause the the front outboard passenger seat, System Operation passenger sensing system to but the off indicator is lit, it could be turn the airbag off for some Seat belts help keep the passenger because that person is not sitting adult-sized occupants. If this in position on the seat during properly in the seat or that the child happens, unbuckle the belt, let vehicle maneuvers and braking, restraint locking feature is engaged. the belt go back all the way, which helps the passenger sensing Use the following steps to allow the and then buckle the belt again system maintain the passenger system to detect that person and without pulling the belt out all airbag status. See “Seat Belts” and enable the front outboard passenger the way. “Child Restraints” in the Index for frontal airbag: additional information about the 6. Restart the vehicle and have 1. Turn the vehicle off. importance of proper restraint use. the person remain in this position for two to three minutes after the on indicator is lit. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

90 Seats and Restraints A thick layer of additional material, such as a blanket or cushion, Warning (Continued) Warning (Continued) or aftermarket equipment such as seat covers, seat heaters, and seat seatback may interfere with the are close to an airbag when it massagers can affect how well the proper operation of the passenger inflates. Avoid yellow connectors. passenger sensing system sensing system. They are probably part of the operates. We recommend that you airbag system. Be sure to follow not use seat covers or other Servicing the proper service procedures, and aftermarket equipment except when make sure the person performing approved by GM for your specific Airbag-Equipped Vehicle work for you is qualified to do so. vehicle. See Adding Equipment to Airbags affect how the vehicle 0 the Airbag-Equipped Vehicle 90 should be serviced. There are parts Adding Equipment to the for more information about of the airbag system in several modifications that can affect how places around the vehicle. Your Airbag-Equipped Vehicle the system operates. dealer and the service manual have Adding accessories that change the The on indicator may be lit if an information about servicing the vehicle's frame, bumper system, object, such as a briefcase, vehicle and the airbag system. To height, front end, or side sheet handbag, grocery bag, laptop, purchase a service manual, see metal, may keep the airbag system or other electronic device, is put on Service Publications Ordering from working properly. an unoccupied seat. If this is not Information 0 474. The operation of the airbag system desired, remove the object from can also be affected by changing the seat. { Warning any parts of the front seats, seat belts, airbag sensing and diagnostic For up to 10 seconds after the { Warning module, steering wheel, instrument vehicle is turned off and the panel, inner door seals including the Stowing articles under the battery is disconnected, an airbag speakers, any of the airbag passenger seat or between the can still inflate during improper modules, ceiling or pillar garnish passenger seat cushion and service. You can be injured if you (Continued) (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 91 trim, overhead console, front turning off the passenger airbag(s). reason, call Customer Assistance. sensors, side impact sensors, See Passenger Sensing System See Customer Assistance Offices or airbag wiring. 0 86. 0 467. Your dealer and the service manual If the vehicle has rollover roof-rail have information about the location airbags, see Different Size Tires Airbag System Check of the airbag sensors, sensing and and Wheels 0 409 for additional The airbag system does not need diagnostic module, and airbag important information. regularly scheduled maintenance or wiring. If a snow plow is added to the replacement. Make sure the airbag In addition, the vehicle may have a vehicle, the airbags should still work readiness light is working. See passenger sensing system for the properly. The airbag systems were Airbag Readiness Light 0 147. front outboard passenger position, designed to work properly under a which includes sensors that are part wide range of conditions, including Caution of the passenger’s seat. The snow plowing with vehicles that passenger sensing system may not have the optional snow plow prep If an airbag covering is damaged, operate properly if the original seat package (RPO VYU). Do not opened, or broken, the airbag trim is replaced with non-GM change or defeat the snow plow's may not work properly. Do not covers, upholstery, or trim; or with “tripping mechanism.” If you do, it open or break the airbag GM covers, upholstery, or trim can damage the snow plow and the coverings. If there are any designed for a different vehicle. Any vehicle, and may cause an airbag opened or broken airbag object, such as an aftermarket seat deployment. coverings, have the airbag heater or a comfort-enhancing pad If you have to modify your vehicle covering and/or airbag module or device, installed under or on top because you have a disability and replaced. For the location of the of the seat fabric, could also you have questions about whether airbags, see Where Are the interfere with the operation of the the modifications will affect the Airbags? 0 78. See your dealer passenger sensing system. This vehicle's airbag system, or if you for service. could either prevent proper have questions about whether the deployment of the passenger airbag system will be affected if the airbag(s) or prevent the passenger vehicle is modified for any other sensing system from properly GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

92 Seats and Restraints Replacing Airbag System Child Restraints . Sit all the way back on the seat. Do the knees bend at the seat Parts after a Crash edge? If yes, continue. If no, Older Children return to the booster seat. { Warning . Buckle the lap-shoulder belt. A crash can damage the airbag Does the shoulder belt rest on systems in the vehicle. the shoulder? If yes, continue. A damaged airbag system may If no, try using the rear seat belt comfort guide, if available. See not properly protect you and your Rear Seat Belt Comfort Guides passenger(s) in a crash, resulting “ ” under Lap-Shoulder Belt 0 71. in serious injury or even death. To If a comfort guide is not help make sure the airbag available, or if the shoulder belt systems are working properly still does not rest on the after a crash, have them shoulder, then return to the inspected and any necessary booster seat. replacements made as soon as . Does the lap belt fit low and possible. Older children who have outgrown snug on the hips, touching the booster seats should wear the thighs? If yes, continue. If no, vehicle s seat belts. If an airbag inflates, you will need to ’ return to the booster seat. replace airbag system parts. See The manufacturer instructions that . Can proper seat belt fit be your dealer for service. come with the booster seat state the maintained for the length of the weight and height limitations for that If the airbag readiness light stays on trip? If yes, continue. If no, booster. Use a booster seat with a after the vehicle is started or comes return to the booster seat. on when you are driving, the airbag lap-shoulder belt until the child system may not work properly. Have passes the fit test below: the vehicle serviced right away. See Airbag Readiness Light 0 147. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 93 If you have the choice, a child According to accident statistics, should sit in a position with a children are safer when properly lap-shoulder belt and get the restrained in a rear seating position. additional restraint a shoulder In a crash, children who are not belt can provide. buckled up can strike other people Q: What is the proper way to who are buckled up, or can be wear seat belts? thrown out of the vehicle. Older A: An older child should wear a children need to use seat belts lap-shoulder belt and get the properly. additional restraint a shoulder belt can provide. The shoulder { Warning belt should not cross the face or Never allow more than one child neck. The lap belt should fit { Warning snugly below the hips, just to wear the same seat belt. The touching the top of the thighs. seat belt cannot properly spread Never allow a child to wear the This applies belt force to the the impact forces. In a crash, they seat belt with the shoulder belt child's pelvic bones in a crash. can be crushed together and behind their back. A child can be It should never be worn over the seriously injured. A seat belt must seriously injured by not wearing abdomen, which could cause be used by only one person at the lap-shoulder belt properly. In a severe or even fatal internal a time. crash, the child would not be injuries in a crash. restrained by the shoulder belt. Also see “Rear Seat Belt Comfort The child could move too far Guides” under Lap-Shoulder Belt forward increasing the chance of 0 71. head and neck injury. The child might also slide under the lap belt. The belt force would then be applied right on the abdomen. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

94 Seats and Restraints need, for everyone, to use safety Warning (Continued) restraints. In fact, the law in every Warning (Continued) state in the United States and in That could cause serious or fatal every Canadian province says Never leave children unattended injuries. The shoulder belt should children up to some age must be in a vehicle and never allow go over the shoulder and across restrained while in a vehicle. children to play with the seat the chest. belts. { Warning Every time infants and young Children can be seriously injured children ride in vehicles, they should or strangled if a shoulder belt is have the protection provided by wrapped around their neck. The appropriate child restraints. Neither shoulder belt can tighten but the vehicle's seat belt system nor its cannot be loosened if it is locked. airbag system is designed for them. The shoulder belt locks when it is Children who are not restrained pulled all the way out of the properly can strike other people, retractor. It unlocks when the or can be thrown out of the vehicle. shoulder belt is allowed to go all the way back into the retractor, { Warning but it cannot do this if it is wrapped around a child’s neck. Never hold an infant or a child Infants and Young If the shoulder belt is locked and while riding in a vehicle. Due to Children tightened around a child’s neck, crash forces, an infant or a child the only way to loosen the belt is will become so heavy it is not Everyone in a vehicle needs to cut it. possible to hold it during a crash. protection! This includes infants and (Continued) For example, in a crash at only all other children. Neither the 40 km/h (25 mph), a 5.5 kg (12 lb) distance traveled nor the age and size of the traveler changes the (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 95 Child restraints are devices used to Warning (Continued) Warning (Continued) restrain, seat, or position children in the vehicle and are sometimes infant will suddenly become a or killed. Never put a rear-facing called child seats or car seats. 110 kg (240 lb) force on a person's child restraint in the front arms. An infant or child should be outboard seat. Secure a There are three basic types of secured in an appropriate rear-facing child restraint in a rear child restraints: restraint. seat. It is also better to secure a . Forward-facing child restraints forward-facing child restraint in a . Rearward-facing child restraints rear seat. If you must secure a forward-facing child restraint in . Belt-positioning booster seats the front outboard seat, always The proper child restraint for your move the front passenger seat as child depends on their size, weight, far back as it will go. and age, and also on whether the child restraint is compatible with the vehicle in which it will be used. For each type of child restraint, there are many different models available. When purchasing a child restraint, be sure it is designed to be used in a motor vehicle. If it is, the restraint will have a label saying that { Warning it meets federal motor vehicle safety standards. The restraint Children who are up against, manufacturer's instructions that or very close to, any airbag when come with the restraint state the it inflates can be seriously injured weight and height limitations for a particular child restraint. In addition, (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

96 Seats and Restraints there are many kinds of restraints The harness system holds the infant available for children with special Warning (Continued) in place and, in a crash, acts to needs. keep the infant positioned in the injuries. To reduce the risk of restraint. serious or fatal injuries during a { Warning crash, young children should To reduce the risk of neck and always be secured in appropriate head injury in a crash, infants and child restraints. toddlers should be secured in a rear-facing child restraint until age Child Restraint Systems two, or until they reach the maximum height and weight limits of their child restraint.

{ Warning Forward-Facing Child Restraint A young child's hip bones are still A forward-facing child restraint so small that the vehicle's regular provides restraint for the child's seat belt may not remain low on body with the harness. the hip bones, as it should. Instead, it may settle up around the child's abdomen. In a crash, Rear-Facing Infant Restraint the belt would apply force on a A rear-facing child restraint provides body area that is unprotected by restraint with the seating surface any bony structure. This alone against the back of the infant. could cause serious or fatal (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 97 Securing an Add-On Child When securing an add-on child Restraint in the Vehicle restraint, refer to the instructions that come with the restraint which { Warning may be on the restraint itself or in a booklet, or both, and to this manual. A child can be seriously injured or The child restraint instructions are killed in a crash if the child important, so if they are not restraint is not properly secured in available, obtain a replacement copy from the manufacturer. the vehicle. Secure the child restraint properly in the vehicle Keep in mind that an unsecured using the vehicle’s seat belt or child restraint can move around in a LATCH system, following the collision or sudden stop and injure Booster Seats instructions that came with that people in the vehicle. Be sure to A belt-positioning booster seat is child restraint and the instructions properly secure any child restraint in used for children who have in this manual. the vehicle — even when no child is outgrown their forward-facing child in it. restraint. Boosters are designed to To help reduce the chance of injury, In some areas of the United States improve the fit of the vehicle's seat the child restraint must be secured and Canada, Certified Child belt system until the child is large in the vehicle. Child restraints must Passenger Safety Technicians enough for the vehicle seat belts to be secured in vehicle seats by lap (CPSTs) are available to inspect fit properly without a booster seat. belts or the lap belt portion of a and demonstrate how to correctly See the seat belt fit test in Older use and install child restraints. In 0 lap-shoulder belt, or by the LATCH Children 92. system. See Lower Anchors and the U.S., refer to the National Tethers for Children (LATCH Highway Traffic Safety System) 0 99 for more information. Administration (NHTSA) website to Children can be endangered in a locate the nearest child safety seat crash if the child restraint is not inspection station. For CPST properly secured in the vehicle. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

98 Seats and Restraints availability in Canada, check with If a child restraint is secured in the Transport Canada or the Provincial front outboard passenger seat, and Warning (Continued) Ministry of Transportation office. the vehicle has a switch on the passenger side instrument panel rear-facing child restraint would Securing the Child Within the endcap to manually turn off the front be very close to the inflating Child Restraint outboard passenger airbag, see airbag. A child in a forward-facing Airbag On-Off Switch 0 84 and child restraint can be seriously { Warning Securing Child Restraints (With the injured or killed if the front Seat Belt in the Center Front Seat) outboard passenger frontal airbag A child can be seriously injured or 0 114 or Securing Child Restraints inflates and the passenger seat is killed in a crash if the child is not (With the Seat Belt in the Front in a forward position. properly secured in the child 0 Passenger Seat) 115 or Securing Even if the passenger sensing restraint. Secure the child Child Restraints (With the Seat Belt system or airbag switch has properly following the instructions in the Rear Seat) 0 111 for more turned off the front outboard that came with that child restraint. information, including important safety information. passenger frontal airbag, no system is fail-safe. No one can Where to Put the Never put a rear-facing child guarantee that an airbag will not restraint in the front. This is because Restraint deploy under some unusual the risk to the rear-facing child is so circumstance, even though it is According to accident statistics, great if the airbag deploys. turned off. children and infants are safer when properly restrained in an appropriate { Warning Secure rear-facing child restraints child restraint secured in a rear in a rear seat, even if the airbag seating position. A child in a rear-facing child is off. If you secure a restraint can be seriously injured forward-facing child restraint in Whenever possible, children aged or killed if the front outboard the front outboard passenger 12 and under should be secured in seat, always move the seat as far a rear seating position. passenger frontal airbag inflates. This is because the back of the (Continued) (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 99 When securing a child restraint with properly secure any child restraint in Warning (Continued) the seat belts in a rear seat position, the vehicle — even when no child is study the instructions that came with in it. back as it will go. It is better to the child restraint to make sure it is secure the child restraint in a compatible with this vehicle. Lower Anchors and rear seat. Child restraints and booster seats Tethers for Children vary considerably in size, and some (LATCH System) may fit in certain seating positions { Warning better than others. The LATCH system secures a child restraint during driving or in a crash. Depending on where you place the A child in a child restraint in the LATCH attachments on the child child restraint and the size of the center front seat can be badly restraint are used to attach the child child restraint, you may not be able injured or killed by the frontal restraint to the anchors in the to access adjacent seat belts or vehicle. This system is designed to airbags if they inflate. Never LATCH anchors for additional secure a child restraint in the make installation of a child restraint passengers or child restraints. easier. center front seat. It is always Adjacent seating positions should better to secure a child restraint in not be used if the child restraint In order to use the LATCH system in a rear seat. prevents access to or interferes with your vehicle, you need a child the routing of the seat belt. restraint that has LATCH attachments. LATCH-compatible Do not use child restraints in the Wherever a child restraint is center front seat position. rear-facing and forward-facing child installed, be sure to follow the seats can be properly installed If the vehicle does not have a rear instructions that came with the child using either the LATCH anchors or restraint system and secure the seat that will accommodate a the vehicle’s seat belts. Do not use rear-facing child restraint, a child restraint system properly. both the seat belts and the LATCH rear-facing child restraint should not Keep in mind that an unsecured anchorage system to secure a be installed in the vehicle, even if child restraint can move around in a rear-facing or forward-facing the airbag is off. collision or sudden stop and injure child seat. people in the vehicle. Be sure to GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

100 Seats and Restraints Booster seats use the vehicle’s seat See Securing Child Restraints (With Lower Anchors belts to secure the child in the the Seat Belt in the Center Front booster seat. If the manufacturer Seat) 0 114 or Securing Child recommends that the booster seat Restraints (With the Seat Belt in the be secured with the LATCH system, Front Passenger Seat) 0 115 or this can be done as long as the Securing Child Restraints (With the booster seat can be positioned Seat Belt in the Rear Seat) 0 111. properly and there is no interference Child restraints built after March with the proper positioning of the 2014 will be labeled with the lap-shoulder belt on the child. specific child weight up to which the Make sure to follow the instructions LATCH system can be used to that came with the child restraint, install the restraint. and also the instructions in this The following explains how to attach manual. a child restraint with these When installing a child restraint with attachments in the vehicle. Lower anchors (1) are metal bars built into the vehicle. There are two a top tether, you must also use Not all vehicle seating positions or either the lower anchors or the seat lower anchors for each LATCH child restraints have lower anchors seating position that will belts to properly secure the child and attachments or top tether restraint. A child restraint must accommodate a child restraint with anchors and attachments. In this lower attachments (2). never be attached using only the top case, the seat belt must be used tether. (with top tether where available) to The LATCH anchorage system can secure the child restraint. be used until the combined weight See Securing Child Restraints (With of the child plus the child restraint is the Seat Belt in the Center Front 29.5 kg (65 lbs). Use the seat belt Seat) 0 114 or Securing Child alone instead of the LATCH Restraints (With the Seat Belt in the anchorage system once the Front Passenger Seat) 0 115 or combined weight is more than Securing Child Restraints (With the 29.5 kg (65 lbs). Seat Belt in the Rear Seat) 0 111. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 101 Top Tether Anchor Some child restraints that have a top tether are designed for use with or without the top tether being attached. Others require the top tether always to be attached. In Canada, the law requires that forward-facing child restraints have a top tether, and that the tether be attached. Be sure to read and follow the instructions for your child restraint. Lower Anchor and Top Tether Anchor Locations Regular Cab — Three-Passenger Front Seat A top tether (3, 4) anchors the top of i : Seating positions with the child restraint to the vehicle. top tether anchors. A top tether anchor is built into the vehicle. The top tether Do not install a child restraint in the attachment (2) on the child restraint center front seating position. connects to the top tether anchor in See Securing Child Restraints (With the Seat Belt in the Center Front the vehicle in order to reduce the 0 forward movement and rotation of Seat) 114 or Securing Child Restraints (With the Seat Belt in the the child restraint during driving or in 0 a crash. Front Passenger Seat) 115 or Securing Child Restraints (With the The child restraint may have a Seat Belt in the Rear Seat) 0 111 for single tether (3) or a dual tether (4). Regular Cab — Two-Passenger more information. Either will have a single Front Seat attachment (2) to secure the top tether to the anchor. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

102 Seats and Restraints has two labels near the crease between the seatback and the seat cushion. For double cab models, the rear outboard seating positions have exposed metal lower anchors in the crease between the seatback and the seat cushion.

Crew and Double Cab Rear Seat Regular Cab i : Seating positions with For regular cab models, the top top tether anchors. tether anchors are under covers on j : Seating positions with two lower For regular cab models, there is an the back panel behind the anchors. anchor symbol on the cover to passenger seat. Remove the trim assist you in locating the top tether plug to access the anchor. Be sure anchors. to use an anchor on the same side Do not install a child restraint in the of the vehicle as the seating center seating position. See position where the child restraint will Securing Child Restraints (With the be placed. Seat Belt in the Center Front Seat) 0 114 or Securing Child Restraints (With the Seat Belt in the Front To assist in locating the lower 0 anchors on crew cab models, each Passenger Seat) 115 or Securing seating position with lower anchors Child Restraints (With the Seat Belt in the Rear Seat) 0 111 for more information. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 103 Do not secure a child restraint in a position without a top tether anchor Warning (Continued) if a national or local law requires that the top tether be attached, or if restraint properly using the the instructions that come with the anchors, or use the vehicle's seat child restraint say that the top tether belts to secure the restraint, must be attached. following the instructions that came with the child restraint and According to accident statistics, the instructions in this manual. children and infants are safer when properly restrained in a child restraint system or infant restraint system secured in a rear seating { Warning Crew Cab Shown, Double Cab position. See Where to Put the Similar Restraint 0 98 for additional Do not attach more than one child information. For crew and double cab models, restraint to a single anchor, the top tether anchors are the loops Securing a Child Restraint except for the center top tether anchors in the crew and double near the top of the seatback for Designed for the LATCH cabs. Attaching more than one each rear seating position. These System loops will be used to route the top child restraint to a single anchor tether through, as well as to secure could cause the anchor or the top tether to the vehicle. Be sure { Warning attachment to come loose or even to use the anchor (loop) on the break during a crash. A child or If a LATCH-type child restraint is same side of the vehicle as the others could be injured. To reduce not attached to anchors, the child seating position where the child the risk of serious or fatal injuries restraint will not be able to protect restraint will be placed. during a crash, attach only one the child correctly. In a crash, the child restraint per anchor. Be sure to read the following child could be seriously injured or instructions to properly install a child killed. Install a LATCH-type child restraint using these loops. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

104 Seats and Restraints restraints. Some restraints also use { Warning Caution another vehicle anchor to secure a top tether. Children can be seriously injured Do not let the LATCH or strangled if a shoulder belt is attachments rub against the Regular Cab Models wrapped around their neck. The vehicle’s seat belts. This may 1. For models without a rear seat, shoulder belt can tighten but damage these parts. If necessary, forward-facing child restraints cannot be loosened if it is locked. move buckled seat belts to avoid should only be installed in the The shoulder belt locks when it is rubbing the LATCH attachments. right front seating position with pulled all the way out of the Do not fold the rear seatback belts and a top tether. See retractor. It unlocks when the when the seat is occupied. Do not Securing Child Restraints (With shoulder belt is allowed to go all fold the empty rear seat with a the Seat Belt in the Center Front Seat) 0 114 or Securing the way back into the retractor, seat belt buckled. This could Child Restraints (With the Seat but it cannot do this if it is damage the seat belt or the seat. wrapped around a child’s neck. Belt in the Front Passenger Unbuckle and return the seat belt Seat) 0 115 or Securing Child If the shoulder belt is locked and to its stowed position, before tightened around a child s neck, Restraints (With the Seat Belt ’ folding the seat. 0 the only way to loosen the belt is in the Rear Seat) 111. to cut it. If the child restraint If you need to secure more than one Buckle any unused seat belts manufacturer recommends that child restraint in the rear seat, see the top tether be attached, behind the child restraint so Where to Put the Restraint 0 98. attach and tighten the top children cannot reach them. Pull This system is designed to make tether to the top tether anchor, the shoulder belt all the way out if your vehicle has one. Refer of the retractor to set the lock, installation of child restraints easier. When using lower anchors, do not to the child restraint and tighten the belt behind the use the vehicle's belts. Instead use instructions and the following child restraint after the child the vehicle's anchors and child steps: restraint has been installed. restraint attachments to secure the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 105 1.1. Fold the passenger If the position you are 2. Secure the child restraint in the seatback forward to using has an adjustable right front seating position with access the top tether head restraint and you the vehicle belts. See Securing anchor. See Reclining are using a dual tether, Child Restraints (With the Seat Seatbacks 0 61. route the tether around Belt in the Center Front Seat) 0 1.2. Find the top tether the head restraint. 114 or Securing Child anchor. Restraints (With the Seat Belt in the Front Passenger Seat) 1.3. Remove the cover to 0 115 or Securing Child expose the anchor. Restraints (With the Seat Belt 0 1.4. Route, attach, and tighten in the Rear Seat) 111. the top tether according 3. Before placing a child in the to your child restraint child restraint, make sure it is instructions and the securely held in place. To following instructions: check, grasp the child restraint at the belt path and attempt to If the position you are move it side to side and back using has an adjustable and forth. There should be no head restraint and you more than 2.5 cm (1 in) of are using a single tether, movement for proper raise the head restraint installation. and route the tether under the head restraint and in between the head restraint posts. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

106 Seats and Restraints Crew Cab Models 2. For forward-facing child 1. Attach and tighten the lower restraints, attach and tighten attachments to the lower the top tether to the top tether anchors. If the child restraint anchor (loop), if your vehicle does not have lower has one. Follow the child attachments or the desired restraint instructions the seating position does not have vehicle LATCH anchor weight lower anchors, secure the child limits described at the restraint with the top tether and beginning of this section, and the belts. Refer to your child the following steps: restraint manufacturer’s instructions and the instructions in this manual. Example — Rear Driver Side 1.1. Find the lower anchors Position for the desired seating 2.1. For a top tether in the position. rear driver side position: 1.2. Put the child restraint on 2.1.1. Raise the the seat. headrest. 1.3. Attach and tighten the 2.1.2. Route the top lower attachments on the tether (4) between child restraint to the lower the headrest anchors. Example — Rear Driver Side posts, through the Position loop (3), behind the inboard headrest post, and under the center shoulder belt (2). GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 107 2.1.3. Then attach the 2.3. For a top tether in the When the top tether is properly top tether (4) to rear passenger position: tightened, the anchor (loop) the top tether 2.3.1. Raise the may bend. This is normal and anchor (loop) (1) at headrest. will not damage the vehicle. the center rear If child restraints are installed seating position. 2.3.2. Route the top tether (4) between in both outboard positions, both 2.2. For a top tether in the the headrest top tethers can be attached to rear center position: posts, through the the center loop. Top tethers 2.2.1. Route the top loop on the can be attached for child tether (4) through passenger side restraints in all three rear the center loop (1), and behind the seating positions at the same and behind the inboard time, following the routing passenger side headrest post. instructions above. headrest post. 2.3.3. Then attach the 4. Before placing a child in the 2.2.2. Then attach the top tether (4) to child restraint, make sure it is top tether (4) to the top tether securely held in place. To the top tether anchor (loop) (1) at check, grasp the child restraint anchor (loop) at the center rear at the LATCH path and attempt the rear passenger seating position. to move it side to side and back and forth. There should side seating 3. Tighten the top tether per the position. be no more than 2.5 cm (1 in) child restraint manufacturer's of movement for proper instructions. installation. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

108 Seats and Restraints Double Cab Models 3. For forward-facing child 1. Remove the headrest prior to restraints, attach and tighten installing a forward-facing child the top tether to the top tether restraint in an outboard rear anchor (loop). Follow the child restraint instructions, the seating position. See “Headrest vehicle LATCH anchor weight Removal and Reinstallation” at the end of this section. limits described at the beginning of this section, and 2. Attach and tighten the lower the following steps: attachments to the lower anchors. If the child restraint does not have lower attachments or the desired Example Rear Driver Side seating position does not have — lower anchors, secure the child Position restraint with the top tether and 3.1. For a top tether in the the belts. Refer to your child rear driver side position: restraint manufacturer s ’ 3.1.1. Remove the instructions and the headrest. instructions in this manual. 3.1.2. Route the top 2.1. Find the lower anchors tether (4) through for the desired seating Example Rear Driver Side the loop (3) on the position. — Position driver side under 2.2. Put the child restraint on the center the seat. shoulder belt (2). 2.3. Attach and tighten the lower attachments on the child restraint to the lower anchors. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 109 3.1.3. Then attach the 3.3.2. Route the top 5. Before placing a child in the top tether (4) to tether (4) through child restraint, make sure it is the top tether the loop on the securely held in place. To anchor (loop) (1) at passenger side. check, grasp the child restraint the center rear 3.3.3. Then attach the at the LATCH path and attempt seating position. top tether (4) to to move it side to side and 3.2. For a top tether in the the top tether back and forth. There should rear center position: anchor (loop) (1) at be no more than 2.5 cm (1 in) the center rear of movement for proper 3.2.1. Route the top installation. tether (4) through seating position. the center loop (1), 4. Tighten the top tether per the Headrest Removal and and behind the child restraint manufacturer's Reinstallation passenger side instructions. Crew Cab Models headrest post. When the top tether is properly For outboard rear seating positions, 3.2.2. Then attach the tightened, the anchor (loop) if the child restraint cannot be top tether (4) to may bend. This is normal and installed properly with the headrest the top tether will not damage the vehicle. in place, the headrest may be anchor (loop) at If child restraints are installed removed. See your dealer for the rear passenger in both outboard positions, both assistance with removal. side seating top tethers can be attached to Store the removed headrests in a position. the center loop. Top tethers secure place. Reinstall the headrest 3.3. For a top tether in the can be attached for child before the seating position is rear passenger position: restraints in all three rear moved. 3.3.1. Remove the seating positions at the same headrest. time, following the routing instructions above. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

110 Seats and Restraints To reinstall the headrest: To remove the headrest: To reinstall the headrest:

1. Insert the headrest posts into 1. Press both buttons on the 1. Insert the headrest posts into the holes in the top of the headrest posts and pull up on the holes in the top of the seatback with the longer the headrest. seatback with the longer chrome plated post toward the 2. Store the headrest in a secure chrome plated post toward the driver side of the vehicle. place. driver side of the vehicle. 2. Push the headrest all the way 3. When the child restraint is 2. Push the headrest all the way down until it contacts the top of removed, reinstall the headrest down until it contacts the top of the seatback. before the seating position the seatback. Double Cab Models is used. The rear outboard headrests should be removed when installing forward-facing child restraints. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 111 Replacing LATCH System Securing Child Restraints If the child restraint or vehicle seat position does not have the LATCH Parts After a Crash (With the Seat Belt in the system, you will be using the seat Rear Seat) belt to secure the child restraint. Be { Warning When securing a child restraint with sure to follow the instructions that came with the child restraint. A crash can damage the LATCH the seat belts in a rear seat position, system in the vehicle. A damaged study the instructions that came with If more than one child restraint LATCH system may not properly the child restraint to make sure it is needs to be installed in the rear compatible with this vehicle. seat, be sure to read Where to Put secure the child restraint, the Restraint 0 98. resulting in serious injury or even If the child restraint has the LATCH death in a crash. To help make system, see Lower Anchors and Double Cab sure the LATCH system is Tethers for Children (LATCH System) 0 99 for how and where to 1. Remove the headrest prior to working properly after a crash, installing a forward-facing child see your dealer to have the install the child restraint using LATCH. If a child restraint is secured restraint in an outboard rear system inspected and any seating position. See “Headrest necessary replacements made as in the vehicle using a seat belt and it uses a top tether, see Lower Removal and Reinstallation” soon as possible. Anchors and Tethers for Children under Lower Anchors and (LATCH System) 0 99 for top tether Tethers for Children (LATCH 0 If the vehicle has the LATCH system anchor locations. System) 99. and it was being used during a Do not secure a child seat in a 2. Put the child restraint on crash, new LATCH system parts position without a top tether anchor the seat. may be needed. if a national or local law requires 3. Pick up the latch plate, and run New parts and repairs may be that the top tether be anchored, or if the lap and shoulder portions necessary even if the LATCH the instructions that come with the of the vehicle's seat belt system was not being used at the child restraint say that the top strap through or around the restraint. time of the crash. must be anchored. The child restraint instructions will show you how. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

112 Seats and Restraints

4. Push the latch plate into the 5. Pull the shoulder belt all the 6. To tighten the belt, push down buckle until it clicks. way out of the retractor to set on the child restraint, pull the Position the release button on the lock. When the retractor shoulder portion of the belt to the buckle, away from the child lock is set, the belt can be tighten the lap portion of the restraint system, so that the tightened but not pulled out of belt, and feed the shoulder belt seat belt could be quickly the retractor. back into the retractor. When unbuckled if necessary. installing a forward-facing child restraint, it may be helpful to use your knee to push down on the child restraint as you tighten the belt. Try to pull the belt out of the retractor to make sure the retractor is locked. If the retractor is not locked, repeat Steps 5 and 6. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 113 7. For forward-facing child Reinstallation” under Lower Anchors 3. Push the latch plate into the restraints, attach and tighten and Tethers for Children (LATCH buckle until it clicks. 0 the top tether to the top tether System) 99 for additional Position the release button on anchor (loop). Refer to the child information on installing the the buckle, away from the child restraint instructions, the headrest properly. restraint system, so that the vehicle LATCH anchor weight Crew Cab seat belt could be quickly limits and instructions listed in unbuckled if necessary. Lower Anchors and Tethers for 1. Put the child restraint on Children (LATCH System) 0 99. the seat. 8. Before placing a child in the 2. Pick up the latch plate, and run child restraint, make sure it is the lap and shoulder portions securely held in place. To of the vehicle's seat belt check, grasp the child restraint through or around the restraint. at the seat belt path and The child restraint instructions attempt to move it side to side will show you how. and back and forth. When the child restraint is properly installed, there should be no more than 2.5 cm (1 in) of movement. To remove the child restraint, 4. Pull the shoulder belt all the unbuckle the vehicle seat belt and way out of the retractor to set let it return to the stowed position. the lock. When the retractor If the top tether is attached to a top lock is set, the belt can be tether anchor, disconnect it. tightened but not pulled out of Reinstall the headrest before the the retractor. seating position is used. See “Headrest Removal and GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

114 Seats and Restraints 6. If the child restraint has a top removed. See your dealer for tether, follow the child restraint assistance with removal, and store manufacturer's instructions the removed headrest in a secure regarding the use of the top place. When the child restraint is tether. See Lower Anchors and removed, reinstall the headrest Tethers for Children (LATCH before the seating position is used. System) 0 99 for more For reinstallation instructions, see information on using the top “Headrest Removal and tether anchors. Reinstallation” under Lower Anchors and Tethers for Children (LATCH 7. Before placing a child in the 0 child restraint, make sure it is System) 99. securely held in place. To 5. To tighten the belt, push down check, grasp the child restraint Securing Child Restraints on the child restraint, pull the at the seat belt path and (With the Seat Belt in the shoulder portion of the belt to attempt to move it side to side Center Front Seat) tighten the lap portion of the and back and forth. When the belt, and feed the shoulder belt child restraint is properly back into the retractor. When installed, there should be no { Warning more than 2.5 cm (1 in) of installing a forward-facing child A child in a child restraint in the movement. restraint, it may be helpful to center front seat can be badly use your knee to push down on To remove the child restraint, injured or killed by the frontal the child restraint as you unbuckle the vehicle seat belt and airbags if they inflate. Never tighten the belt. let it return to the stowed position. secure a child restraint in the Try to pull the belt out of the If the top tether is attached to a top center front seat. It is always retractor to make sure the tether anchor, disconnect it. better to secure a child restraint in retractor is locked. If the For outboard rear seating positions, a rear seat. retractor is not locked, repeat if the child restraint cannot be Steps 4 and 5. installed properly with the headrest in place, the headrest may be GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 115 Do not use child restraints in the center front seat position. { Warning Warning (Continued) Securing Child Restraints A child in a rear-facing child under some unusual restraint can be seriously injured circumstance, even though it is (With the Seat Belt in the or killed if the front outboard turned off. Front Passenger Seat) passenger airbag inflates. This is Secure rear-facing child restraints because the back of the in a rear seat, even if the airbag With Passenger Sensing rear-facing child restraint would System is off. If you secure a be very close to the inflating forward-facing child restraint in This vehicle has airbags. A rear airbag. A child in a forward-facing the front outboard passenger seat is a safer place to secure a child restraint can be seriously seat, always move the seat as far forward-facing child restraint. See injured or killed if the front back as it will go. It is better to Where to Put the Restraint 0 98. outboard passenger airbag secure the child restraint in a In addition, the vehicle may have a inflates and the passenger seat is rear seat. passenger sensing system which is in a forward position. designed to turn off the front See Passenger Sensing System The vehicle may have a 0 86 for additional information. outboard passenger frontal airbag passenger sensing system which under certain conditions. is designed to turn off the front See Passenger Sensing System outboard passenger frontal airbag If the vehicle does not have a rear 0 86 and Passenger Airbag Status under certain conditions. seat that will accommodate a Indicator 0 149 for more information, rear-facing child restraint, a including important safety Even if the passenger sensing rear-facing child restraint should not information. system, if equipped, has turned be installed in the vehicle, even if Never put a rear-facing child off the front outboard passenger the airbag is off. frontal airbag, no system is restraint in the front. This is because If a child restraint uses a top tether, fail-safe. No one can guarantee the risk to the rear-facing child is so see Lower Anchors and Tethers for great, if the airbag deploys. that an airbag will not deploy Children (LATCH System) 0 99 for (Continued) top tether anchor locations. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

116 Seats and Restraints Do not secure a child restraint in a off indicator in the passenger position without a top tether anchor airbag status indicator should if a national or local law requires light and stay lit when you start that the top tether be anchored, or if the vehicle. See Passenger the instructions that come with the Airbag Status Indicator 0 149. child restraint say that the top strap 2. Put the child restraint on must be anchored. the seat. In Canada, the law requires that 3. Pick up the latch plate, and run forward-facing child restraints have the lap and shoulder portions a top tether, and that the tether be of the vehicle's seat belt attached. through or around the restraint. When using the lap-shoulder belt to The child restraint instructions secure the child restraint in this will show you how. 4. Push the latch plate into the position, follow the instructions that buckle until it clicks. came with the child restraint and the Position the release button on following instructions: the buckle, away from the child 1. Move the seat as far back as it restraint system, so that the will go before securing the seat belt could be quickly forward-facing child restraint. unbuckled if necessary. Move the seat upward or the seatback to an upright position, if needed, to get a tight installation of the child restraint. When the passenger sensing system, if equipped, has turned off the front outboard Tilt the latch plate to adjust the passenger frontal airbag, the belt, if needed. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 117 7. If the vehicle does not have a rear seat and the child restraint manufacturer recommends using a top tether anchor, attach the top tether to the top tether anchor. Refer to the instructions that came with the child restraint and to Lower Anchors and Tethers for Children (LATCH System) 0 99. 8. Before placing a child in the child restraint, make sure it is 5. Pull the shoulder belt all the 6. To tighten the belt, push down securely held in place. To way out of the retractor to set on the child restraint, pull the check, grasp the child restraint the lock. When the retractor shoulder portion of the belt to at the seat belt path and lock is set, the belt can be tighten the lap portion of the attempt to move it side to side tightened but not pulled out of belt, and feed the shoulder belt and back and forth. When the the retractor. back into the retractor. When child restraint is properly installing a forward-facing child installed, there should be no restraint, it may be helpful to more than 2.5 cm (1 in) of use your knee to push down on movement. the child restraint as you If the vehicle is equipped with a tighten the belt. passenger sensing system, and Try to pull the belt out of the when the passenger sensing system retractor to make sure the has turned off the front outboard retractor is locked. If the passenger frontal airbag, the off retractor is not locked, repeat indicator in the passenger airbag Steps 5 and 6. status indicator will come on and stay on when the vehicle is started. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

118 Seats and Restraints If a child restraint has been installed and the on indicator is lit, see “If the { Warning Warning (Continued) On Indicator Is Lit for a Child A child in a rear-facing child forward-facing child restraint in Restraint” under Passenger Sensing System 0 86. restraint can be seriously injured the front outboard passenger or killed if the front outboard seat, always move the seat as far To remove the child restraint, passenger airbag inflates. This is back as it will go. It is better to unbuckle the vehicle seat belt and because the back of the secure the child restraint in a let it return to the stowed position. rear-facing child restraint would rear seat. If the top tether is attached to a top be very close to the inflating tether anchor, disconnect it. airbag. A child in a forward-facing With Airbag On-Off Switch child restraint can be seriously injured or killed if the front { Warning This vehicle has airbags. A rear seat is a safer place to secure a outboard passenger airbag If the airbag readiness light ever forward-facing child restraint. See inflates and the passenger seat is comes on and stays on, it means Where to Put the Restraint 0 98. in a forward position. that something may be wrong There may be a switch on the Even if the airbag switch has with the airbag system. For instrument panel endcap that you turned off the front outboard example, the front outboard can use to turn off the front passenger frontal airbag, no passenger frontal airbag could outboard passenger frontal airbag. system is fail-safe. No one can inflate even though the airbag See Airbag On-Off Switch 0 84 for guarantee that an airbag will not on-off switch is turned off. more information, including deploy under some unusual To help avoid injury to yourself or important safety information. circumstance, even though it is others, have the vehicle serviced Never put a rear-facing child turned off. right away. See Airbag Readiness restraint in the front. This is because Secure rear-facing child restraints Light 0 147 for more information, the risk to the rear-facing child is so in a rear seat, even if the airbag including important safety great if the airbag deploys. is off. If you secure a information. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 119 If the vehicle does not have a rear 1. Move the seat as far back as it seat that will accommodate a will go before securing the rear-facing child restraint, a forward-facing child restraint. rear-facing child restraint should not Move the seat upward or the be installed in the vehicle, even if seatback to an upright position, the airbag is off. if needed, to get a tight If a child restraint uses a top tether, installation of the child see Lower Anchors and Tethers for restraint. Children (LATCH System) 0 99 for When the airbag off switch (if top tether anchor locations. equipped) has turned off the Do not secure a child restraint in a front outboard passenger position without a top tether anchor frontal airbag, the off indicator if a national or local law requires in the airbag off light should Tilt the latch plate to adjust the that the top tether be anchored, or if light and stay lit when you start belt, if needed. the vehicle. See Airbag On-Off the instructions that come with the 0 child restraint say that the top strap Light 147. must be anchored. 2. Put the child restraint on In Canada, the law requires that the seat. forward-facing child restraints have 3. Pick up the latch plate, and run a top tether, and that the tether be the lap and shoulder portions attached. of the vehicle's seat belt When using the lap-shoulder belt to through or around the restraint. secure the child restraint in this The child restraint instructions position, follow the instructions that will show you how. came with the child restraint and the following instructions: 4. Push the latch plate into the buckle until it clicks. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

120 Seats and Restraints Position the release button on 7. If the vehicle does not have a the buckle, away from the child rear seat and the child restraint restraint system, so that the manufacturer recommends seat belt could be quickly using a top tether anchor, unbuckled if necessary. attach the top tether to the top tether anchor. Refer to the instructions that came with the child restraint and to Lower Anchors and Tethers for Children (LATCH System) 0 99. 8. Before placing a child in the child restraint, make sure it is 6. To tighten the belt, push down securely held in place. To on the child restraint, pull the check, grasp the child restraint shoulder portion of the belt to at the seat belt path and tighten the lap portion of the attempt to move it side to side belt, and feed the shoulder belt and back and forth. When the back into the retractor. When child restraint is properly 5. Pull the shoulder belt all the installing a forward-facing child installed, there should be no way out of the retractor to set restraint, it may be helpful to more than 2.5 cm (1 in) of the lock. When the retractor use your knee to push down on movement. lock is set, the belt can be the child restraint as you To remove the child restraint, tightened but not pulled out of tighten the belt. unbuckle the vehicle seat belt and the retractor. Try to pull the belt out of the let it return to the stowed position. retractor to make sure the If the top tether is attached to a top retractor is locked. If the tether anchor, disconnect it. retractor is not locked, repeat If you turned the airbag off with the Steps 5 and 6. switch (if equipped), turn on the front outboard passenger airbag GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 121 when you remove the child restraint the instructions that come with the from the vehicle unless the person Warning (Continued) child restraint say that the top strap who will be sitting there is a member must be anchored. inflating airbag. Secure of a passenger airbag risk group. In Canada, the law requires that See Airbag On-Off Switch 0 84 for rear-facing child restraints in a rear seat. forward-facing child restraints have more information, including a top tether, and that the tether be important safety information. A child in a forward-facing child attached. Heavy-Duty Crew Cab Only restraint can be seriously injured or killed if the front outboard When using the lap-shoulder belt to secure the child restraint in this This vehicle has airbags. A rear passenger airbag inflates and the position, follow the instructions that seat is a safer place to secure a passenger seat is in a forward came with the child restraint and the forward-facing child restraint. See position. If you secure a 0 following instructions: Where to Put the Restraint 98. forward-facing child restraint in Never put a rear-facing child the front outboard passenger 1. Move the seat as far back as it restraint in the front. This is because seat, always move the seat as far will go before securing the the risk to the rear-facing child is so back as it will go. It is better to forward-facing child restraint. great if the airbag deploys. secure the child restraint in a Move the seat upward or the rear seat. seatback to an upright position, { Warning if needed, to get a tight installation of the child A child in a rear-facing child If a child restraint uses a top tether, restraint. see Lower Anchors and Tethers for restraint can be seriously injured 2. Put the child restraint on Children (LATCH System) 0 99 for or killed if the passenger airbag the seat. top tether anchor locations. inflates. This is because the back 3. Pick up the latch plate, and run Do not secure a child restraint in a of the rear-facing child restraint the lap and shoulder portions position without a top tether anchor would be very close to the of the vehicle's seat belt if a national or local law requires (Continued) through or around the restraint. that the top tether be anchored, or if The child restraint instructions will show you how. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

122 Seats and Restraints

4. Push the latch plate into the 5. Pull the shoulder belt all the 6. To tighten the belt, push down buckle until it clicks. way out of the retractor to set on the child restraint, pull the Position the release button on the lock. When the retractor shoulder portion of the belt to the buckle, away from the child lock is set, the belt can be tighten the lap portion of the restraint system, so that the tightened but not pulled out of belt, and feed the shoulder belt seat belt could be quickly the retractor. back into the retractor. When unbuckled if necessary. installing a forward-facing child restraint, it may be helpful to use your knee to push down on the child restraint as you tighten the belt. Try to pull the belt out of the retractor to make sure the retractor is locked. If the retractor is not locked, repeat Steps 5 and 6. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Seats and Restraints 123 7. If your child restraint has a top tether, follow the child restraint manufacturer's instructions regarding the use of the top tether. See Lower Anchors and Tethers for Children (LATCH System) 0 99 for more information on using the top tether anchors. 8. Before placing a child in the child restraint, make sure it is securely held in place. To check, grasp the child restraint at the seat belt path and attempt to move it side to side and back and forth. When the child restraint is properly installed, there should be no more than 2.5 cm (1 in) of movement. To remove the child restraint, unbuckle the vehicle seat belt and let it return to the stowed position. If the top tether is attached to a top tether anchor, disconnect it. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

124 Storage Storage Storage Glove Box Compartments Storage Compartments Storage Compartments ...... 124 { Warning Instrument Panel Storage . . . . 124 Glove Box ...... 124 Do not store heavy or sharp Cupholders ...... 124 objects in storage compartments. Sunglasses Storage ...... 125 In a crash, these objects may Center Console Storage ...... 125 cause the cover to open and Floor Console Storage ...... 126 could result in injury. Additional Storage Features Cargo Tie-Downs ...... 126 Instrument Panel Storage Card Holder To access the upper glove box, If equipped, there is a card holder unlock with the key and pull up on on the front instrument panel to the the handle. left of the steering wheel. To access the lower glove box, pull down on the handle. Cupholders Front There may be cupholders on the center front seat console armrest. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Storage 125 Rear Sunglasses Storage Center Console Storage

If equipped, pull the rear seat If equipped, sunglasses storage is Press the latch and lift to open. armrest down to access the on the overhead console. Press the Depending on the options there may cupholders. fixed button on the cover and be a tote compartment, accessory release to access. power outlet, auxiliary jack, and USB port(s) inside. There are openings for power cords on the edge of the storage area. See Power Outlets 0 133 and the infotainment manual. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

126 Storage Floor Console Storage Additional Storage Caution Features The truck bed walls will collapse if Cargo Tie-Downs the tie-downs are overloaded.

If equipped with front seat floor console storage, unlock with the ignition key, press the button, and lift to open. The vehicle may be equipped with To install: cargo tie-downs. 1. Insert a tie-down loop Any of the nine holes inside the assembly until it is flush with truck bed can be used for tie-downs. the truck bed wall. The maximum load is 113 kg 2. Turn the tie-down loop (250 lb) per tie-down. clockwise to tighten. The tie-down will be hard to turn until the toggle moves past the installation point on the toggle guide. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Storage 127 3. Fasten the tie-down firmly by hand only. Do not use tools. To remove: 1. Remove the tie-down loop completely by turning counterclockwise while holding the backing plate against the truck bed wall. 2. Pull the backing plate away from the truck bed wall until a click is heard. This locks the toggle into position on the toggle guide. 3. Push the backing plate against the truck bed wall. This allows the toggle nut to spin. 4. Remove the backing plate, toggle guide, and toggle nut from the truck bed wall completely. 5. Reinstall the tie-down loop through the backing plate into the toggle nut for reuse. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

128 Instruments and Controls Transmission Temperature Engine Oil Pressure Light Instruments and Gauge ...... 145 (Denali Only) ...... 156 Controls Voltmeter Gauge ...... 145 Low Fuel Warning Light ...... 156 Seat Belt Reminders ...... 146 Security Light ...... 157 Airbag Readiness Light ...... 147 High-Beam On Light ...... 157 Controls Airbag On-Off Light ...... 147 Front Fog Lamp Light ...... 157 Steering Wheel Adjustment . . . 129 Passenger Airbag Status Lamps On Reminder ...... 157 Steering Wheel Controls ...... 129 Indicator ...... 149 Cruise Control Light ...... 158 Heated Steering Wheel ...... 130 Charging System Light ...... 149 Door Ajar Light ...... 158 Malfunction Indicator Lamp Horn ...... 130 Information Displays Windshield Wiper/Washer . . . . 130 (Check Engine Light) ...... 150 Brake System Warning Driver Information Center (DIC) Compass ...... 131 (Base Level Cluster) ...... 158 Clock ...... 132 Light ...... 152 Antilock Brake System (ABS) Driver Information Center (DIC) Power Outlets ...... 133 (Uplevel and Denali Wireless Charging ...... 134 Warning Light ...... 152 Four-Wheel-Drive Light ...... 153 Cluster) ...... 160 Warning Lights, Gauges, and Tow/Haul Mode Light ...... 153 Vehicle Messages Indicators Hill Descent Control Light . . . . 153 Vehicle Messages ...... 164 Warning Lights, Gauges, and Lane Departure Warning Engine Power Messages . . . . . 164 Indicators ...... 137 (LDW) Light (2500/3500) . . . . 153 Vehicle Speed Messages . . . . . 164 Instrument Cluster ...... 138 Lane Keep Assist (LKA) Light Speedometer ...... 142 (1500 Series) ...... 154 Vehicle Personalization Odometer ...... 142 Vehicle Ahead Indicator ...... 154 Vehicle Personalization ...... 165 Trip Odometer ...... 142 Traction Off Light ...... 154 Tachometer ...... 142 StabiliTrak OFF Light ...... 154 Universal Remote System Fuel Gauge ...... 142 Traction Control System (TCS)/ Universal Remote System . . . . 172 Engine Oil Pressure StabiliTrak Light ...... 155 Universal Remote System Gauge ...... 143 Engine Coolant Temperature Programming ...... 172 Engine Coolant Temperature Warning Light ...... 155 Universal Remote System Gauge ...... 144 Tire Pressure Light ...... 156 Operation ...... 174 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 129 Controls Tilt and Telescoping Steering Steering Wheel Controls Wheel Steering Wheel Adjustment

If equipped, some audio controls To adjust the tilt and telescoping can be adjusted at the steering steering wheel, if equipped: wheel. 1. Push the lever (1) down to To adjust the steering wheel: g : For vehicles with OnStar or a move the steering wheel Bluetooth system, press to interact 1. Hold the steering wheel and forward or rearward. Lift the with those systems. See OnStar pull the lever. lever up to lock the wheel in Overview 0 479 or “Bluetooth place. 2. Move the steering wheel up (Overview)” in the infotainment or down. 2. Pull the lever (2) toward you to manual. move the steering wheel up or 3. Release the lever to lock the i : Press to reject an incoming down, then release the lever to wheel in place. call or end a current call. Press to lock the wheel in place. mute or unmute the infotainment Do not adjust the steering wheel system when not on a call. while driving. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

130 Instruments and Controls o or p : Press to go to the 2. Volume: Press to increase or Horn previous or next menu option. decrease the volume. To sound the horn, press a on the w or x : Press to go to the next or steering wheel. previous selection. Heated Steering Wheel V : Press to select a highlighted Windshield Wiper/Washer menu option.

The windshield wiper control is on the turn signal lever. The windshield wipers are controlled by turning the band with z on it. ( (Heated Steering Wheel, If 1 : Fast wipes. Equipped) : Press to turn it on or The favorite and volume switches off. A light next to the button w : Slow wipes. are on the back of the steering displays when the feature is 3 INT : Turn the band up for more wheel. turned on. frequent wipes or down for less 1. Favorite: When on a radio The steering wheel takes about frequent wipes. source, press to select the next three minutes to start heating. OFF : Turns the windshield or previous favorite. When on a wipers off. media source, press to select the next or previous track. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 131 8 : For a single wipe, turn to 8, If the ignition is turned off while the Compass then release. For several wipes, wipers are performing wipes due to The vehicle may have a compass hold the band on 8 longer. windshield washing, the wipers continue to run until they reach the display on the Driver Information Clear ice and snow from the wiper base of the windshield. Center (DIC). The compass receives blades before using them. If frozen its heading and other information to the windshield, carefully loosen or Windshield Washer from the Global Positioning thaw them. Damaged wiper blades System (GPS) antenna, StabiliTrak, should be replaced. See Wiper { Warning and vehicle speed information. Blade Replacement 0 375. The compass system is designed to In freezing weather, do not use operate for a certain number of Heavy snow or ice can overload the the washer until the windshield is wiper motor. An internal circuit miles or degrees of turn before warmed. Otherwise the washer breaker to the motor will stop the needing a signal from the GPS fluid can form ice on the motor until it cools down. satellites. When the compass windshield, blocking your vision. display shows CAL, drive the Wiper Parking vehicle for a short distance in an If the ignition is turned off while the L m : Push the paddle marked with open area where it can receive a wipers are on w, 1, or 3 INT, the windshield washer symbol at the GPS signal. The compass system will automatically determine when a they will immediately stop. top of the turn signal lever, to spray washer fluid and activate the wipers. GPS signal is restored and provide If the windshield wiper lever is then The wipers will continue until the a heading again. moved to OFF before the driver paddle is released or the maximum door is opened or within 10 minutes, wash time is reached. When the the wipers will restart and move to paddle is released, additional wipes the base of the windshield. may occur depending on how long the windshield washer had been activated. See Washer Fluid 0 366 for information on filling the windshield washer fluid reservoir. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

132 Instruments and Controls Clock To set the clock display: 3. Touch the } or 0 screen button to go back to the Setting the Time and Date with 1. Select SETTINGS from the Home Page, then select Time previous menu. Faceplate Controls and Date. Auto Set requires an active OnStar To set the time or date: 2. Select Clock Display. service plan. 1. Select SETTINGS from the 3. Turn the MENU knob to Off If auto timing is set, the time Home Page, then select Time or On. displayed on the clock may not and Date. update immediately when driving 4. Press the MENU knob to into a new time zone. 2. Select the desired function. select. 3. Turn the MENU knob to To set the date: increase or decrease the value. Press o BACK to go to the last menu and save the changes. 1. Touch SETTINGS from the 4. Press the MENU knob to go to Home Page, then touch Time the next value. After the last Setting the Time and Date with and Date. Touchscreen Controls value is selected, the system 2. Touch Set Date and touch will update and return to the « To set the time: or to increase or decrease Settings menu. Press o BACK ª month, day, or year. to go to the last menu and 1. Touch SETTINGS from the Home Page, then touch Time save the changes. } and Date. 3. Touch the or 0 screen Auto Set requires an active OnStar button to go back to the service plan. 2. Touch Set Time and touch « previous menu. If auto timing is set, the time or ª to increase or decrease To set the clock display: hours, minutes, and AM or PM. displayed on the clock may not 1. Touch SETTINGS and touch Touch 12 24 Hr for 12 or update immediately when driving – Time and Date. into a new time zone. 24 hour clock. 2. Touch Clock Display and touch OFF or ON to turn the clock display off or on. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 133 3. Touch the } or 0 screen Lift the cover to access and replace Caution (Continued) button to go back to the when not in use. previous menu. The power outlets on the center electrical equipment when not in stack and in front of the cupholders use and do not plug in equipment Power Outlets are powered at all times. The power that exceeds the maximum outlets inside the storage area and 15 amp rating. Power Outlets 12 Volt Direct on the rear of the console are Current powered when the ignition is in Accessory power outlets can be ON/RUN or ACC/ACCESSORY, Certain power accessory plugs may used to plug in electrical equipment, or when RAP is active. not be compatible with the such as a cell phone, MP3 accessory power outlet and could player, etc. { Warning overload vehicle or adapter fuses. If a problem is experienced, see The vehicle may have up to four your dealer. accessory power outlets. Power is always supplied to the outlets. Do not leave electrical When adding electrical equipment, Vehicles with a Center Console equipment plugged in when the be sure to follow the proper . One or two in front of the vehicle is not in use because the installation instructions included with cupholders on the center vehicle could catch fire and cause the equipment. See Add-On console. injury or death. Electrical Equipment 0 336. . One inside the center console. Caution . One on the rear of the center console. Caution Hanging heavy equipment from the power outlet can cause Vehicles with Bench Seats Leaving electrical equipment damage not covered by the plugged in for an extended period . One on the center stack below vehicle warranty. The power the climate control system. of time while the vehicle is off will drain the battery. Always unplug (Continued) . One or two in the storage area on the bench seat. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

134 Instruments and Controls For vehicles with a center console, The power outlet is not designed for Caution (Continued) the 110/120 volt power outlet is in the following, and may not work front of the cupholders in the center properly if they are plugged in: outlets are designed for console. accessory power plugs only, such . Equipment with high initial peak as cell phone charge cords. For vehicles with bench seats, the wattage, such as 110/120 volt power outlet is on the compressor-driven refrigerators center stack. and electric power tools. Power Outlet 110/120 Volt Alternating Current An indicator light on the outlet turns . Other equipment requiring an on to show it is in use. The light extremely stable power supply, comes on when the ignition is in such as ON/RUN, equipment requiring less microcomputer-controlled than 150 watts is plugged into the electric blankets and touch outlet, and no system fault is sensor lamps. detected. . Medical equipment. The indicator light does not come on when the ignition is in LOCK/OFF or Wireless Charging if the equipment is not fully seated into the outlet. The vehicle may have wireless charging on top of the center If equipment is connected using console. See Center Console more than 150 watts or a system Storage 0 125. The system Base Shown, Uplevel Similar fault is detected, a protection circuit operates at 145 kHz and wirelessly shuts off the power supply and the charges one Qi compatible mobile If equipped with this power outlet, it indicator light turns off. To reset the device. The power output of the can be used to plug in electrical circuit, unplug the item and plug it system is capable of charging at a equipment that uses a maximum back in or turn the Retained rate up to 1 amp (5W), as requested limit of 150 watts. Accessory Power (RAP) off and by the compatible mobile device. then back on. See Retained See Radio Frequency Statement Accessory Power (RAP) 0 260. 0 475. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 135 To check for phone or other device The operating temperature is −20 °C compatibility: (−4 °F) to 60 °C (140 °F) for the . In the U.S., see my.gmc.com/ charging system and 0 °C (32 °F) to learn. 35 °C (95 °F) for the phone. . In Canada, see { Warning gmtotalconnect.ca. . Or, see your dealer for details. Remove all objects from the charging pad before charging { Warning your mobile device. Objects, such as coins, keys, rings, paper clips, Wireless charging can affect the or cards, between the phone and operation of an implanted charging pad will become very To charge a mobile device: pacemaker or other medical hot. On the rare occasion that the 1. Remove all objects from the devices. If you have one, it is charging system does not detect charging pad. The system may an object, and the object gets recommended to consult with not charge if there are any wedged between the phone and your doctor before using the objects between the mobile wireless charging system. charger, remove the phone and device and charging pad. allow the object to cool before removing it from the charging 2. Place the mobile device face The vehicle must be on, in ACC/ pad, to prevent burns. up against the alignment rib on ACCESSORY, or Retained the charge pad. Accessory Power (RAP) must be active. The wireless charging feature may not correctly indicate charging when the vehicle is in RAP. See Retained Accessory Power (RAP) 0 260. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

136 Instruments and Controls 3. The } will appear on the V referred license terms, warranty documentation and/or other on the infotainment display. disclaimers and copyright notices materials provided with the This indicates that the mobile are available for download. LG distribution. device is properly positioned Electronics will also provide open 3. Neither the name of the and charging. If a mobile source code to you on CD-ROM for copyright holder nor the names device is placed on the a charge covering the cost of of its contributors may be used performing such distribution (such charging pad and } does not to endorse or promote products as the cost of media, shipping, and derived from this software display, remove the mobile handling) upon email request to device from the pad, turn it without specific prior written [email protected]. This offer is permission. 180 degrees, and wait valid for three (3) years from the three seconds before placing/ date on which you purchased the THIS SOFTWARE IS PROVIDED aligning the mobile device on product. BY THE COPYRIGHT HOLDERS the pad again. AND CONTRIBUTORS "AS IS" Freescale-WCT library Software Acknowledgements AND ANY EXPRESS OR IMPLIED Copyright (c) 2012-2014 Freescale WARRANTIES, INCLUDING, Certain Wireless Charging Module Semiconductor, Inc.. All rights BUT NOT LIMITED TO, THE product from LG Electronics, Inc. reserved. IMPLIED WARRANTIES OF ("LGE") contains the open source MERCHANTABILITY AND FITNESS software detailed below. Refer to 1. Redistributions of source code FOR A PARTICULAR PURPOSE the indicated open source licenses must retain the above copyright ARE DISCLAIMED. IN NO EVENT (as are included following this notice, this list of conditions SHALL THE COPYRIGHT HOLDER notice) for the terms and conditions and the following disclaimer. OR CONTRIBUTORS BE LIABLE of their use. 2. Redistributions in binary form FOR ANY DIRECT, INDIRECT, OSS Notice Information must reproduce the above INCIDENTAL, SPECIAL, copyright notice, this list of EXEMPLARY, OR To obtain the source code that is conditions and the following CONSEQUENTIAL DAMAGES contained in this product, please disclaimer in the (INCLUDING, BUT NOT LIMITED visit http://opensource.lge.com. In TO, PROCUREMENT OF addition to the source code, all SUBSTITUTE GOODS OR GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 137 SERVICES; LOSS OF USE, DATA, Warning Lights, Some warning lights come on briefly OR PROFITS; OR BUSINESS when the engine is started to INTERRUPTION) HOWEVER Gauges, and indicate they are working. When CAUSED AND ON ANY THEORY one of the warning lights comes on OF LIABILITY, WHETHER IN Indicators and stays on while driving, or when CONTRACT, STRICT LIABILITY, Warning lights and gauges can one of the gauges shows there may OR TORT (INCLUDING signal that something is wrong be a problem, check the section that NEGLIGENCE OR OTHERWISE) before it becomes serious enough explains what to do. Waiting to do ARISING IN ANY WAY OUT OF to cause an expensive repair or repairs can be costly and even THE USE OF THIS SOFTWARE, replacement. Paying attention to the dangerous. EVEN IF ADVISED OF THE warning lights and gauges could POSSIBILITY OF SUCH DAMAGE. prevent injury. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

138 Instruments and Controls Instrument Cluster

Base Cluster English Standard Theme, Metric Similar GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 139

Uplevel Cluster English Standard Theme, Metric Similar GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

140 Instruments and Controls

Denali Cluster English Standard, Metric Similar GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 141 Cluster Menu (Uplevel and . Info App. This is where the calls, or scroll through contacts. Denali Cluster) selected Driver Information If there is an active call, mute the Center (DIC) displays can be phone or switch to handset There is an interactive display area viewed. See Driver Information operation. in the center of the instrument Center (DIC) (Uplevel and cluster. Denali Cluster) 0 160 or Driver Navigation Information Center (DIC) (Base Press V to select the Navigation Level Cluster) 0 158. app, then press p to enter the . Audio Navigation menu. If there is no . Phone active route, you can resume the last route and turn the voice . Navigation prompts on/off. If there is an active . Options route, press V to cancel or resume Audio route guidance or turn the voice prompts on or off. Press V to select the Audio app, Options then press p to enter the Audio menu. In the Audio menu browse for Press V to select the Options app, Use the right steering wheel control music, select from the favorites, then press p to enter the Options to open and scroll through the or change the audio source. Use w menu. Use or to scroll different items and displays. w x or x to change the station or go to through items in the Options menu. Press o to access the cluster the next or previous track. Units : Press p while Units is applications. Use w or x to scroll Phone displayed to enter the Units menu. through the list of available Choose US or Metric units by Press V to select the Phone app, applications. Not all applications will pressing V while the desired item is be available on all vehicles. then press p to enter the Phone highlighted. A checkmark will be menu. In the Phone menu, if there is displayed next to the selected item. no active phone call, view recent GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

142 Instruments and Controls Display Themes (Denali) : There selected speed limit is exceeded, a The trip odometer is accessed and are three instrument cluster display pop-up warning is displayed with a reset through the Driver Information configurations to choose from: chime. Center (DIC). See Driver Standard, Technology, and Media. Information Center (DIC) (Uplevel Software Information : Displays 0 open source software information. and Denali Cluster) 160 or Driver Info Pages : Press p while Info Information Center (DIC) (Base Pages is displayed to enter the Info Level Cluster) 0 158. Pages menu and select the items to Speedometer be displayed in the Info app. The speedometer shows the Tachometer See Driver Information Center (DIC) vehicle's speed in either kilometers 0 (Uplevel and Denali Cluster) 160 per hour (km/h) or miles per The tachometer displays the engine or Driver Information Center (DIC) hour (mph). speed in revolutions per (Base Level Cluster) 0 158. minute (rpm). Speed Warning : The Speed Odometer Warning display allows the driver to Fuel Gauge set a speed that they do not want to The odometer shows how far the exceed. To set the Speed Warning, vehicle has been driven, in either kilometers or miles. The odometer press p when Speed Warning is displays on the Speed page of the displayed. Press V when Enabled is Driver Information Center (DIC). highlighted. To set the speed, press p when Set Speed is highlighted. Trip Odometer V Press to set the speed. The trip odometer shows how far Press w or x to adjust the value. the vehicle has been driven since Once the speed is set, this feature the trip odometer was last reset. can be turned off by pressing V while viewing this page. If the Standard Theme Shown GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 143 When the ignition is on, the fuel . The gauge takes a few seconds gauge indicates about how much to stabilize after the ignition is fuel is left in the tank. turned on, and goes back to There is an arrow near the fuel empty when the ignition is gauge pointing to the side of the turned off. vehicle the fuel door is on. Engine Oil Pressure When the indicator nears empty, the low fuel light comes on. There still is Gauge a little fuel left, but the vehicle should be refueled soon. Here are four things that some owners ask about. None of these English, Standard Theme Shown show a problem with the fuel gauge: The engine oil pressure gauge . At the service station, the fuel shows the engine oil pressure pump shuts off before the gauge in kPa (kilopascals) or psi (pounds reads full. per square inch) when the engine is . It takes a little more or less fuel running. to fill up than the gauge Oil pressure can vary with engine indicated. For example, the speed, outside temperature, coolant gauge may have indicated the Metric, Standard Theme Shown temperature, and oil viscosity. tank was half full, but it actually A reading outside the normal took a little more or less than operating range can be caused by a half the tank's capacity to fill dangerously low oil level or some the tank. other problem causing low oil . The gauge moves a little while pressure. Check the vehicle's oil as turning a corner or speeding up. soon as possible. A DIC message may display. See Engine Oil 0 350. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

144 Instruments and Controls Engine Coolant Caution Temperature Gauge Lack of proper engine oil maintenance can damage the engine. Driving with the engine oil low can also damage the engine. The repairs would not be covered by the vehicle warranty. Check the oil level as soon as possible. Add oil if required, but if the oil level is within the operating range and the oil pressure is still low, English, Standard Theme Shown have the vehicle serviced. Always follow the maintenance schedule This gauge shows the engine coolant temperature. Under normal for changing engine oil. Metric, Standard Theme Shown driving conditions the gauge will read approximately 100 °C (210 °F) If the vehicle has a diesel engine, or less. If the gauge pointer is near see the Duramax diesel 125 °C (260 °F), the engine is supplement. too hot. It means that the engine coolant has overheated. If the vehicle has been operating under normal driving conditions, pull off the road, stop the vehicle, and turn off the engine as soon as possible. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 145 Transmission Caution Temperature Gauge Do not drive the vehicle while the transmission fluid is overheating, or the transmission can be damaged. This could lead to costly repairs that would not be covered by the warranty.

Voltmeter Gauge English Standard Theme This gauge appears when the vehicle is in Tow/Haul Mode and Metric Standard Theme shows the transmission fluid temperature. If the gauge is reading in the red area and/or a message appears in the Driver Information Center (DIC), the vehicle must be stopped and the cause checked. One possible cause is a low fluid level in the transmission. Standard Theme When the ignition is on, this gauge indicates the battery voltage. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

146 Instruments and Controls When the engine is running, this vehicle must be driven, turn off all times if the driver remains or gauge shows the condition of the accessories, such as the radio and becomes unbuckled while the charging system. The gauge can air conditioner and unplug all vehicle is moving. transition from a higher to lower or a chargers and accessories. If the driver seat belt is buckled, lower to higher reading. This is Readings outside the normal neither the light nor the chime normal. If the vehicle is operating operating range indicate a possible comes on. outside the normal operating range, problem in the electrical system. the charging system light comes on. Passenger Seat Belt Reminder 0 Have the vehicle serviced as soon See Charging System Light 149 as possible. Light for more information. The voltmeter gauge may also read lower when in There may be a passenger seat belt fuel economy mode. This is normal. Seat Belt Reminders reminder light near the passenger airbag status indicator. See Readings outside the normal Driver Seat Belt Reminder Passenger Sensing System 0 86. operating range can also occur Light when a large number of electrical There is a driver seat belt reminder accessories are operating in the light on the instrument cluster. vehicle and the engine is left idling for an extended period. This condition is normal since the charging system is not able to provide full power at engine idle. As engine speeds are increased, this For vehicles equipped with the condition should correct itself as passenger seat belt reminder light, higher engine speeds allow the when the vehicle is started this light charging system to create maximum When the vehicle is started, this flashes and a chime may come on power. light flashes and a chime may come to remind passengers to fasten their on to remind the driver to fasten seat belt. Then the light stays on The vehicle can only be driven for a their seat belt. Then the light stays solid until the belt is buckled. This short time with the readings outside on solid until the belt is buckled. cycle continues several times if the the normal operating range. If the This cycle may continue several GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 147 passenger remains or becomes Airbag On-Off Light unbuckled while the vehicle is moving. If the vehicle has an airbag on-off switch, it also has a passenger If the passenger seat belt is airbag status indicator located in the buckled, neither the chime nor the overhead console. light comes on. The airbag readiness light comes on The front passenger seat belt for several seconds when the reminder light and chime may turn vehicle is started. If the light does on if an object is put on the seat not come on then, have it fixed such as a briefcase, handbag, immediately. grocery bag, laptop, or other electronic device. To turn off the reminder light and/or chime, remove { Warning United States the object from the seat or buckle the seat belt. If the airbag readiness light stays on after the vehicle is started or Airbag Readiness Light comes on while driving, it means the airbag system might not be This light shows if there is an working properly. The airbags in electrical problem with the airbag the vehicle might not inflate in a system. The system check includes crash, or they could even inflate Canada and Mexico the airbag sensor(s), passenger without a crash. To help avoid When the vehicle is started, the sensing system (if equipped), the injury, have the vehicle serviced passenger airbag status indicator pretensioners, the airbag modules, right away. ON and OFF, or the symbol for on the wiring, and the crash sensing and off, will light for several seconds and diagnostic module. For more as a system check. Then, after information on the airbag system, If there is a problem with the airbag several more seconds, the status 0 see Airbag System 77. system, a Driver Information Center indicator ON or OFF, or either the (DIC) message may also come on. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

148 Instruments and Controls on or off symbol, will light to let you know the status of the front { Warning Warning (Continued) outboard passenger frontal airbag. If the front outboard passenger with the airbag system. For When the front outboard passenger frontal airbag is turned off for a example, the front outboard frontal airbag is manually turned off person who is not in a risk group passenger frontal airbag could using the airbag on-off switch on the identified by the national inflate even though the airbag instrument panel endcap, the OFF government, that person will not on-off switch is turned off. indicator light or the off symbol will have the extra protection of an come on and stay on as a reminder To help avoid injury to yourself or airbag. In a crash, the airbag will that the airbag has been turned off. others, have the vehicle serviced not be able to inflate and help This light will go off when the airbag right away. See Airbag Readiness has been turned on. See Airbag protect the person sitting there. Light 0 147 for more information, On-Off Switch 0 84 for more Do not turn off the front outboard including important safety information, including important passenger frontal airbag unless information. safety information. the person sitting there is in a risk group identified by the national government. See Airbag On-Off If the word ON or the on symbol is Switch 0 84 for more information, lit, it means that the front outboard including important safety passenger frontal airbag is enabled information. (may inflate). See Airbag On-Off Switch 0 84 for more information, including important safety information. { Warning If, after several seconds, both status indicator lights remain on, or if there If the airbag readiness light ever are no lights at all, there may be a comes on and stays on, it means problem with the lights or the airbag that something may be wrong on-off switch. See your dealer for (Continued) service. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 149 Passenger Airbag Status several more seconds, the status indicator will light either ON or OFF, Warning (Continued) Indicator or either the on or off symbol, to let If the vehicle has the passenger you know the status of the front with the airbag system. To help sensing system, the overhead outboard passenger frontal airbag. avoid injury to yourself or others, console will have a passenger have the vehicle serviced right If the word ON or the on symbol is away. See Airbag Readiness airbag status indicator. See lit on the passenger airbag status Passenger Sensing System 0 86 for Light 0 147 for more information, indicator, it means that the front including important safety important safety information. outboard passenger frontal airbag is information. allowed to inflate. If the word OFF or the off symbol is lit on the airbag status indicator, it Charging System Light means that the passenger sensing system has turned off the front outboard passenger frontal airbag. United States If, after several seconds, both status indicator lights remain on, or if there are no lights at all, there may be a problem with the lights or the passenger sensing system. See The charging system light comes on your dealer for service. briefly when the ignition is turned on, but the engine is not running, as { Warning a check to show the light is working. Canada and Mexico It should go out when the engine is When the vehicle is started, the If the airbag readiness light ever started. passenger airbag status indicator comes on and stays on, it means If the light stays on, or comes on will light ON and OFF, or the symbol that something may be wrong while driving, there may be a for on and off, for several seconds problem with the electrical charging as a system check. Then, after (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

150 Instruments and Controls system. Have it checked by your dealer. Driving while this light is on Caution could drain the battery. Modifications to the engine, When this light comes on, or is transmission, exhaust, intake, flashing, the Driver Information or fuel system, or the use of Center (DIC) also displays a replacement tires that do not Malfunctions are often indicated by message. meet the original tire the system before any problem is If a short distance must be driven specifications, can cause this light noticeable. Being aware of the light with the light on, be sure to turn off and seeking service promptly when to come on. This could lead to all accessories, such as the radio it comes on may prevent damage. costly repairs not covered by the and air conditioner. vehicle warranty. This could also affect the vehicle s ability to pass Caution ’ Malfunction Indicator an Emissions Inspection/ Lamp (Check Engine If the vehicle is driven continually Maintenance test. See with this light on, the emission Accessories and Modifications Light) 0 control system may not work as 343. This light is part of the vehicle’s well, the fuel economy may be emission control on-board lower, and the vehicle may not diagnostic system. If this light is on If the light is flashing : A run smoothly. This could lead to while the engine is running, a malfunction has been detected that malfunction has been detected and costly repairs that might not be could damage the emission control the vehicle may require service. The covered by the vehicle warranty. system and increase vehicle light should come on to show that it emissions. Diagnosis and service is working when the ignition is on may be required. and the engine is not running. See To help prevent damage, reduce Ignition Positions 0 256. vehicle speed and avoid hard accelerations and uphill grades. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 151 If towing a trailer, reduce the least one full tank of the proper The vehicle may not pass amount of cargo being hauled as fuel to turn the light off. See Fuel inspection if: 0 soon as possible. 299. . The light is on when the engine If the light continues to flash, find a If the light remains on, see your is running. safe place to park. Turn the vehicle dealer. . The light does not come on off and wait at least 10 seconds Emissions Inspection and when the ignition is on while the before restarting the engine. If the engine is off. light is still flashing, follow the Maintenance Programs previous guidelines and see your If the vehicle requires an Emissions . Critical emission control systems dealer for service as soon as Inspection/Maintenance test, the have not been completely possible. test equipment will likely connect to diagnosed. If this happens, the vehicle would not be ready for If the light is on steady : A the vehicle's Data Link Connector (DLC). inspection and might require malfunction has been detected. several days of routine driving Diagnosis and service may be before the system is ready for required. inspection. This can happen if Check the following: the 12-volt battery has recently . A loose or missing fuel cap may been replaced or run down, or if cause the light to come on. See the vehicle has been recently Filling the Tank 0 301. A few serviced. driving trips with the cap See your dealer if the vehicle will properly installed may turn the The DLC is under the instrument not pass or cannot be made ready light off. panel to the left of the steering for the test. wheel. Connecting devices that are . Poor fuel quality can cause not used to perform an Emissions inefficient engine operation and Inspection/Maintenance test or to poor driveability, which may go service the vehicle may affect away once the engine is warmed vehicle operation. See Add-On up. If this occurs, change the Electrical Equipment 0 336. See fuel brand. It may require at your dealer if assistance is needed. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

152 Instruments and Controls Brake System Warning light stays on if the parking brake Antilock Brake System does not fully release. If it stays on Light after the parking brake is fully (ABS) Warning Light The vehicle brake system consists released, it means the vehicle has a of two hydraulic circuits. If one brake problem. circuit is not working, the remaining If the light comes on while driving, circuit can still work to stop the pull off the road and stop carefully. vehicle. For normal braking The pedal might be harder to push, performance, both circuits need to or the pedal can go closer to the be working. floor. It may take longer to stop. This light comes on briefly when the If the warning light comes on, there If the light is still on, have the engine is started. is a brake problem. Have the brake vehicle towed for service. See system inspected right away. Towing the Vehicle 0 430. If the light does not come on, have it fixed so it will be ready to warn if { Warning there is a problem. If the light comes on while driving, The brake system might not be stop as soon as it is safely possible working properly if the brake and turn off the vehicle. Then start system warning light is on. the engine again to reset the Metric English Driving with the brake system system. If the ABS light stays on, warning light on can lead to a or comes on again while driving, the This light should come on briefly crash. If the light is still on after vehicle needs service. A chime may when the engine is started. If it does the vehicle has been pulled off also sound when the light comes on not come on then, have it fixed so it the road and carefully stopped, steady. will be ready to warn you if there is a problem. have the vehicle towed for If the ABS light is the only light on, service. the vehicle has regular brakes, but When the ignition is on, the brake the antilock brakes are not system warning light also comes on functioning. when the parking brake is set. The GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 153 If both the ABS and the brake Tow/Haul Mode Light Lane Departure Warning system warning light are on, the vehicle's antilock brakes are not (LDW) Light (2500/3500) functioning and there is a problem with the regular brakes. See your dealer for service. See Brake System Warning Light 0 152. For vehicles with the Tow/Haul Four-Wheel-Drive Light Mode feature, this light comes on If equipped, this light is green if when the Tow/Haul Mode has been LDW is on and ready to operate. activated. This light changes to amber and 0 See Tow/Haul Mode 271. flashes to indicate that the lane marking has been crossed without Hill Descent Control Light using a turn signal in that direction. On the base cluster, this light comes The four-wheel-drive light comes on on briefly while starting the vehicle. when the manual transfer case is If it does not come on, have the shifted into four-wheel drive and the vehicle serviced. front axle engages. LO or HI will See Lane Departure Warning (LDW) also be next to this light when the (2500/3500 Series) 0 295. vehicle is in four-wheel low or four-wheel high. If equipped, the Hill Descent Control light comes on when the system is Some delay between the shifting ready for use. When the light and the light coming on is normal. flashes, the system is active. See Four-Wheel Drive 0 272. See Hill Descent Control (HDC) 0 284. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

154 Instruments and Controls Lane Keep Assist (LKA) Vehicle Ahead Indicator dealer. If the system is working normally, the indicator light then Light (1500 Series) turns off. The traction off light comes on when the Traction Control System (TCS) has been turned off by pressing and releasing the TCS/StabiliTrak button. If equipped, this indicator will This light and the StabiliTrak OFF If available, this light comes on display green when a vehicle is light come on when StabiliTrak is briefly while starting the vehicle. detected ahead and amber when turned off. you are following a vehicle ahead This light is green if LKA is available much too closely. If the TCS is off, wheel spin is not to assist. limited. Adjust driving accordingly. See Forward Collision Alert (FCA) LKA may assist by gently turning System 0 292. See Traction Control/Electronic the steering wheel if the vehicle Stability Control 0 282. approaches a detected lane marking Traction Off Light without using the turn signal in that StabiliTrak OFF Light direction. The LKA light will turn amber. This light is amber and flashes as a Lane Departure Warning (LDW) alert, to indicate that the lane marking has been crossed. See Lane Keep Assist (LKA) (1500 This light comes on briefly while Series) 0 297. starting the engine. If it does not, This light comes on briefly while have the vehicle serviced by your starting the engine. If it does not, have the vehicle serviced by your dealer. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 155 This light comes on when the If the light is on and not flashing, the If it does not, have the vehicle StabiliTrak system is turned off. TCS and potentially the StabiliTrak serviced by your dealer. If the If StabiliTrak is off, the Traction system have been disabled. system is working normally the Control System (TCS) is also off. A Driver Information Center (DIC) indicator light goes off. If StabiliTrak and TCS are off, the message may display. Check the system does not assist in controlling DIC messages to determine which Caution the vehicle. Turn on the TCS and feature(s) is no longer functioning the StabiliTrak systems, and the and whether the vehicle requires The engine coolant temperature warning light turns off. service. warning light indicates that the If the light is on and flashing, the vehicle has overheated. Driving See Traction Control/Electronic with this light on can damage the Stability Control 0 282. TCS and/or the StabiliTrak system is actively working. engine and it may not be covered by the vehicle warranty. See See Traction Control/Electronic Traction Control System Engine Overheating 0 363. (TCS)/StabiliTrak Light Stability Control 0 282. Engine Coolant The engine coolant temperature Temperature Warning warning light comes on when the engine has overheated. Light If this happens, pull over and turn off the engine as soon as possible. See Engine Overheating 0 363. This light comes on briefly when the engine is started. If the light does not come on, have the vehicle serviced by your dealer. If the system is working normally, This light comes on briefly while the indicator light turns off. starting the vehicle. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

156 Instruments and Controls Tire Pressure Light When the Light Flashes First and Then Is On Steady If the light flashes for about a minute and then stays on, there may be a problem with the TPMS. If the problem is not corrected, the light will come on at every ignition cycle. This light should come on briefly as See Tire Pressure Monitor the engine is started. If it does not For vehicles with the Tire Pressure Operation 0 400. come on, have the vehicle serviced Monitor System (TPMS), this light by your dealer. comes on briefly when the engine is Engine Oil Pressure Light If the light comes on and stays on, it started. It provides information (Denali Only) means that oil is not flowing through about tire pressures and the TPMS. the engine properly. The vehicle could be low on oil and might have When the Light Is On Steady Caution some other system problem. See This indicates that one or more of Lack of proper engine oil your dealer. the tires are significantly maintenance can damage the underinflated. engine. Driving with the engine oil Low Fuel Warning Light A Driver Information Center (DIC) low can also damage the engine. tire pressure message may also The repairs would not be covered display. Stop as soon as possible, by the vehicle warranty. Check and inflate the tires to the pressure the oil level as soon as possible. value shown on the Tire and Add oil if required, but if the oil Loading Information label. See Tire 0 level is within the operating range Pressure 397. and the oil pressure is still low, have the vehicle serviced. Always This light is near the fuel gauge and follow the maintenance schedule comes on briefly when the ignition is for changing engine oil. turned on as a check to show it is working. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 157 It also comes on when the fuel tank High-Beam On Light Front Fog Lamp Light is low on fuel. The light turns off when fuel is added. If it does not, have the vehicle serviced. Security Light

This light comes on when the For vehicles with fog lamps, this high-beam headlamps are in use. light comes on when the fog lamps See Headlamp High/Low-Beam are on. Changer 0 179. The light goes out when the fog lamps are turned off. See Fog The security light should come on ® IntelliBeam Light Lamps 0 181. briefly as the engine is started. If it does not come on, have the vehicle serviced by your dealer. If the Lamps On Reminder system is working normally, the indicator light turns off. If the light stays on and the engine does not start, there could be a problem with the theft-deterrent This light comes on when the system. See Immobilizer Operation IntelliBeam system, if equipped, is 0 46. enabled. This light comes on when the See Exterior Lamp Controls 0 176. exterior lamps are in use. See Exterior Lamp Controls 0 176. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

158 Instruments and Controls Cruise Control Light Door Ajar Light Information Displays Driver Information Center (DIC) (Base Level Cluster) The DIC displays are shown in the center of the instrument cluster. The displays show the status of many For vehicles with cruise control, the This light comes on when a door is vehicle systems. The trip odometer cruise control light is white when the open or not securely latched. Before reset stem in the instrument cluster cruise control is on and ready, and driving, check that all doors are is used to access the DIC menu turns green when the cruise control properly closed. items. is set and active. DIC Menu Items The light turns off when the cruise Turn the trip odometer reset stem to control is turned off. See Cruise scroll through the following menu Control 0 285. items: . Digital Speedometer . Trip . Fuel Range . Average Fuel Economy . Tire Pressure . Remaining Oil Life . Transmission Fluid Temperature . Trailer Brake . Hourmeter GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 159 . Unit recent driving history and the Remaining Oil Life amount of fuel remaining in the fuel Digital Speedometer Turn the trip odometer reset stem tank. Fuel range cannot be reset. until REMAINING OIL LIFE The speedometer shows how fast Average Fuel Economy displays. An estimate of the oil's the vehicle is moving in either remaining useful life is shown. kilometers per hour (km/h) or miles The Average Fuel Economy display REMAINING OIL LIFE 99% means per hour (mph). The speedometer shows the approximate average 99% of the current oil life remains. cannot be reset. If equipped, press liters per 100 kilometers (L/100 km) the reset stem and select to display or miles per gallon (mpg). This When the remaining oil life is low, speed limit signs. number reflects only the the CHANGE ENGINE OIL SOON approximate average fuel economy message will appear on the display. Trip that the vehicle has right now, and The oil should be changed as soon Turn the trip odometer reset stem will change as driving conditions as possible. See Engine Oil 0 350. until TRIP displays. The current change. This number is based on In addition to the engine oil life distance traveled, in either the number of L/100 km (mpg) system monitoring the oil life, kilometers (km) or miles (mi), since recorded since the last time this additional maintenance is the last reset for the trip odometer is menu item was reset. Reset this recommended in the Maintenance shown. The trip odometer can be display by pressing the trip Schedule. See Maintenance reset to zero by pressing and odometer reset stem. Schedule 0 448. holding the trip odometer reset stem Tire Pressure The Oil Life display must be reset while the trip odometer is displayed. after each oil change. It will not Turn the trip odometer reset stem Fuel Range reset itself. Do not reset the Oil Life until a vehicle with the approximate display at any time other than when This display shows the approximate pressures of all four tires displays. the oil has just been changed. distance the vehicle can be driven Tire pressure is displayed in either It cannot be reset accurately until without refueling. The fuel range kilopascal (kPa) or in pounds per the next oil change. To reset the estimate is based on an average of square inch (psi). engine oil life system, see Engine the vehicle's fuel economy over See Tire Pressure Monitor System Oil Life System 0 353. 0 399 and Tire Pressure Monitor Operation 0 400. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

160 Instruments and Controls Transmission Fluid Temperature Unit The temperature of the automatic This will change the displays on transmission fluid displays in either the instrument cluster and DIC to degrees Celsius (°C) or degrees either metric or English (US) Fahrenheit (°F). measurements. To change the units, press the trip odometer reset stem Trailer Brake when UNITS is displayed to enter On vehicles with the Integrated the Unit menu. Turn the trip Trailer Brake Control (ITBC) system, odometer reset stem to switch turn the trip odometer reset stem between English and metric. Press until TRAILER GAIN and TRAILER the trip odometer reset stem when OUTPUT displays. the desired setting is displayed. TRAILER GAIN shows the Trailer Compass or : Press to move up or Gain setting. This setting can be w x down in a list. adjusted from 0.0 to 10.0 with either The vehicle may have a compass in a trailer connected or disconnected. the Driver Information Center (DIC). o or p : Press to move between See Compass 0 131. the interactive display zones in the TRAILER OUTPUT shows the cluster. power output to the trailer anytime a Driver Information Center trailer with electric brakes is V : Press to open a menu or select connected. Output is displayed as a (DIC) (Uplevel and Denali a menu item. Press and hold to bar graph. Dashes may appear in Cluster) reset values on certain screens. the TRAILER OUTPUT display if a The DIC displays are shown in the trailer is not connected. DIC Info Page Options center of the instrument cluster in The info pages on the DIC can be Hourmeter the Info App. See Instrument Cluster 0 turned on or off through the This display shows the total number 138. The displays show the status Options menu. of hours the engine has run. of many vehicle systems. The controls for the DIC are on the right 1. Press o to access the cluster steering wheel control. applications. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 161 2. Press w or x to scroll to the Speed : Shows the vehicle speed in per hour (mph). This average is Options application. either kilometers per hour (km/h) or calculated based on the various miles per hour (mph). The vehicle vehicle speeds recorded since the 3. Press V to enter the odometer is also shown on this last reset of this value. Options menu. page. If equipped, press p to open Press and hold V while this display 4. Scroll to Info Pages and the menu and select to display is active to reset the trip odometer, press p. speed limit signs. the average fuel economy, and the Trip A or Trip B, Average Fuel average speed. Or press and 5. Press w or x to move p Economy, and Average Speed : select reset in the menu. through the list of possible Shows the current distance traveled, information displays. in either kilometers (km) or Fuel Range and Instantaneous Fuel Economy : Shows the 6. Press V while an item is miles (mi), since the trip odometer was last reset. approximate distance the vehicle highlighted to select or can be driven without refueling. deselect that item. When an The Average Fuel Economy display LOW will be displayed when the item is selected, a checkmark shows the approximate average vehicle is low on fuel. The fuel will appear next to it. liters per 100 kilometers (L/100 km) range estimate is based on an or miles per gallon (mpg). This DIC Info Pages average of the vehicle's fuel number is calculated based on the economy over recent driving history The following is the list of all number of L/100 km (mpg) recorded and the amount of fuel remaining in possible DIC info page displays. since the last time this menu item the fuel tank. It also shows if the Some may not be available for your was reset. This number reflects only Active Fuel Management is active particular vehicle. Some items may the approximate average fuel and in V4 mode, or inactive and in not be turned on by default but can economy that the vehicle has right V8 mode. See Active Fuel be turned on through the Options now, and will change as driving Management 0 264. app. See “DIC Info Page Options” conditions change. earlier in this section. The Instantaneous Fuel Economy The Average Speed display shows display shows the approximate the average speed of the vehicle in current fuel economy in either liters kilometers per hour (km/h) or miles per 100 kilometers (L/100 km) or GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

162 Instruments and Controls miles per gallon (mpg). This number Oil Life : Shows an estimate of the Tire Pressure : Shows the reflects only the approximate fuel oil's remaining useful life. approximate pressures of all four economy that the vehicle has right If REMAINING OIL LIFE 99% is tires. Tire pressure is displayed in now and changes frequently as displayed, that means 99% of the either kilopascal (kPa) or in pounds driving conditions change. current oil life remains. per square inch (psi). If the pressure Timer and Fuel Used : This display When the remaining oil life is low, is low, the value for that tire is shown in amber. See Tire Pressure can be used as a timer. To start the the CHANGE ENGINE OIL SOON 0 V message will appear on the display. Monitor System 399 and Tire timer, press while this display is Pressure Monitor Operation 0 400. active. The display will show the The oil should be changed as soon 0 amount of time that has passed as possible. See Engine Oil 350. Best Fuel Economy : Displays since the timer was last reset. To In addition to the engine oil life average fuel economy, the best fuel system monitoring the oil life, economy over the selected stop the timer, press V briefly while additional maintenance is distance, and a bar graph showing this display is active and the timer is recommended in the Maintenance instantaneous fuel economy. running. Schedule. See Maintenance This also shows the number of Schedule 0 448. Press p to change the selected distance. Press and hold V while liters (L) or gallons (gal) of fuel used The Oil Life display must be reset since the last reset of this after each oil change. It will not this display is active to reset the menu item. reset itself. Do not to reset the Oil best fuel economy and average fuel V Life display at any time other than economy. This display can also be Press and hold while this display reset by selecting reset in the menu. is active to reset the timer and fuel when the oil has just been changed. used. Each of these items can be It cannot be reset accurately until Top Consumers : Shows a list of the next oil change. To reset the the features that are currently reset individually by pressing p engine oil life system, press and impacting the fuel economy, in order while this display is active. hold V for several seconds while from highest to lowest. If a feature is the Oil Life display is active. See turned off, it will be removed from Engine Oil Life System 0 353. the list. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 163 Economy Trend : Shows history of Engine Hours : Shows the total Following Distance : Used to the Average Fuel Economy from the number of hours the engine has run. select the alert timing for the last 50 km (30 mi). Each bar This display also shows the engine Forward Collision Alert (FCA). See represents about 5 km (3 mi) of idle hours. Forward Collision Alert (FCA) 0 driving. During driving the bars will Trailer Brake : On vehicles with the System 292. shift to always reflect the most Integrated Trailer Brake Control Blank Page : Shows no recent distance on the right side. (ITBC) system, the trailer brake information. Press and hold V to clear the graph display appears in the DIC. Transmission Fluid Temperature or press p to reset through TRAILER GAIN shows the trailer Gauge : Shows the temperature of the menu. gain setting. This setting can be the automatic transmission fluid in ECO Index : The bar graph adjusted from 0.0 to 10.0 with either either degrees Celsius (°C) or provides feedback on the efficiency a trailer connected or disconnected. degrees Fahrenheit (°F). of current driving behavior. The OUTPUT shows the power output to Off Road : Displays vehicle pitch graph shows a value that is based the trailer any time a trailer with and roll information, road wheel on current fuel consumption electric brakes is connected. Output angle, and four-wheel drive (4WD) compared to what is expected from is displayed as a bar graph. Dashes status. the vehicle with good and bad may appear in the OUTPUT display. driving habits. It also shows if the Active Fuel Management is active Speed Signs : Shows sign and in V4 mode, or inactive and in information, which comes from a V8 mode. See Active Fuel roadway database in the onboard Management 0 264. navigation. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

164 Instruments and Controls Vehicle Messages . Brakes is driven. The vehicle may be driven . Ride Control Systems while this message is on, but Messages displayed on the DIC maximum acceleration and speed indicate the status of the vehicle or . Driver Assistance Systems may be reduced. Anytime this some action that may be needed to . Cruise Control message stays on, or displays correct a condition. Multiple repeatedly, the vehicle should be messages may appear one after . Lighting and Bulb Replacement taken to your dealer for service as another. . Wiper/Washer Systems soon as possible. The messages that do not require . Doors and Windows immediate action can be Vehicle Speed Messages . Seat Belts acknowledged and cleared by SPEED LIMITED TO V Airbag Systems pressing . The messages that . XXX KM/H (MPH) require immediate action cannot be . Engine and Transmission cleared until that action is This message shows that the performed. . Tire Pressure vehicle speed has been limited to . Battery the speed displayed. The limited All messages should be taken speed is a protection for various seriously; clearing the message Engine Power Messages propulsion and vehicle systems, does not correct the problem. such as lubrication, thermal, If a SERVICE message appears, ENGINE POWER IS REDUCED suspension, Teen Driver if see your dealer. equipped, or tires. This message displays when the Follow the instructions given in the vehicle's propulsion power is messages. The system displays reduced. Reduced propulsion power messages regarding the following can affect the vehicle's ability to topics: accelerate. If this message is on, . Service Messages but there is no observed reduction in performance, proceed to your . Fluid Levels destination. The performance may . Vehicle Security be reduced the next time the vehicle GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 165 Vehicle 3. Press o BACK on the center . Voice Personalization stack or touch 0 to return to . Display the previous menu or exit. . Rear Camera Use the audio system controls to access the personalization menus Turn the ignition on to access the . Return to Factory Settings for customizing vehicle features. Settings menu, then select SETTINGS from the Home Page on . Software Information The following are all possible the infotainment display. . Wi-Fi personalization features. Depending on the vehicle, some may not be Personalization Menus Detailed information for each menu follows. available. The following list of menu items may Base Radio Audio System be available: Time and Date Controls . Time and Date Manually set the time and date. See { : Press to access the Home . Rear Seat Reminder Clock 0 132. Page Menu. . Language Rear Seat Reminder Q R or : Touch to scroll through the . Video Voice-Over This allows for a chime and a menus or setup items. . Valet Mode message when the rear door has 0 : Touch to exit or return to the been opened before or during previous screen or menu. . Teen Driver operation of the vehicle. Uplevel Radio Audio System . Radio Select Off or On. Controls . Vehicle Language 1. Touch the desired feature to . Bluetooth display a list of available Select Language, then select from options. . Apple CarPlay the available language(s). 2. Select the desired feature . Android Auto setting. . USB Auto Launch GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

166 Instruments and Controls The selected language will display Radio Select the desired number or select on the system, and voice Auto and the infotainment system Select and the following may recognition will reflect the selected will automatically adjust the number display: language. of favorites shown. . Manage Favorites Video Voice-Over Audible Touch Feedback . Number of Favorites Shown Select Off or On. This allows Audible Touch . Audible Touch Feedback Feedback to be turned on or off. Valet Mode . Text Scroll Select Off or On. This will lock the infotainment . Tone Settings system and steering wheel controls. Text Scroll It may also limit access to vehicle . Auto Volume Select to see text scroll on the storage locations, if equipped. . Maximum Startup Volume screen. To enable valet mode: . Audio Cue Volume Select Off or On. 1. Enter a four-digit code on the Manage Favorites Tone Settings keypad. This allows favorites to be edited. Select to adjust the radio tone. See 2. Select Enter to go to the See Manage Favorites in Radio “Tone Settings” in AM-FM Radio confirmation screen. “ ” “ Setup” under Home Page 0 189 or 0 190. 3. Re-enter the four-digit code. “Manage Favorites” in “Settings” Auto Volume Touch Lock or Unlock to lock or under “Radio” in the infotainment This feature adjusts the volume unlock the system. Touch Back to manual. based on vehicle speed and go back to the previous menu. Number of Favorites Shown ambient noise. Teen Driver Select to set the number of favorites Select Off, Low, Medium-Low, to display. See “Teen Driver” under “Settings” Medium, Medium-High, or High. in the infotainment manual. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 167 Maximum Startup Volume Climate and Air Quality Alert Type This feature sets the maximum Select and the following may This feature will set crash alerts to startup volume. If the vehicle is display: beeps or seat vibrations. This started and the volume is greater setting affects all crash alerts . Auto Fan Speed than this level, the volume is including Forward Collision, Lane adjusted to this level. To set the . Auto Rear Defog Departure Warning, and Parking maximum startup volume, touch + Assist alerts. Auto Fan Speed or − to increase or decrease. Select Beeps or Safety Alert Seat. This feature will set the auto fan Audio Cue Volume speed. Forward Collision System This feature sets the volume of Select Low, Medium, or High. This feature will turn on or off audio files played at system startup Forward Collision Alert (FCA) and Auto Rear Defog and shutdown. Forward Automatic Braking (FAB). Select On, then touch + or − to This feature will automatically turn The Off setting disables all FCA and increase or decrease the volume. on the rear defogger when it is cold FAB functions. With the Alert and outside. Brake setting, both FCA and FAB Vehicle Select Off or On. are available. The Alert setting Select and the following may disables FAB. See Forward display: Collision/Detection Systems Automatic Braking (FAB) 0 294. . Climate and Air Quality Select and the following may Select Off, Alert and Brake, or Alert. display: . Collision/Detection Systems Park Assist . Alert Type . Comfort and Convenience If equipped, this feature can assist . Forward Collision System . Lighting in backing up and parking the . Park Assist vehicle. See Assistance Systems for . Power Door Locks Parking or Backing 0 289. . Remote Lock, Unlock, Start Select Off, On, or On with Towbar. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

168 Instruments and Controls Comfort and Convenience Chime Volume Select Off or On. Select and the following may This allows the selection of the Lighting display: chime volume level. Select and the following may . Auto Memory Recall Touch + or − to adjust the volume. display: . Easy Exit Options Reverse Tilt Mirror . Vehicle Locator Lights . Chime Volume When on, both the driver and . Exit Lighting . Reverse Tilt Mirror passenger, driver, or passenger outside mirrors will tilt downward Vehicle Locator Lights . Auto Mirror Folding when the vehicle is shifted to This feature will flash the exterior Auto Memory Recall R (Reverse) to improve visibility of lamps and allows some of the the ground near the rear wheels. exterior lamps and most of the This feature automatically recalls They will return to their previous interior lamps to turn on briefly the previously stored 1 or 2 button driving position when the vehicle is when K on the Remote Keyless positions when the ignition is shifted out of R (Reverse) or the changed from off to on or ACC/ Entry (RKE) transmitter is pressed engine is turned off. See Reverse to locate the vehicle. ACCESSORY. See Memory Seats Tilt Mirrors 0 51. 0 62. Select Off or On. Select Off, On - Driver and Select Off orOn. Passenger, On - Driver, or On - Exit Lighting Easy Exit Options Passenger. This allows the selection of how This feature automatically recalls Auto Mirror Folding long the exterior lamps stay on the previously stored Exit button when leaving the vehicle when it is When on, the outside mirrors will dark outside. position when exiting the vehicle. automatically fold or unfold when See Memory Seats 0 62. the Remote Keyless Entry (RKE) Select Off, 30 Seconds, 60 Seconds, Select Off or On. transmitter lock or unlock button is or 120 Seconds. pressed and held. See Folding Mirrors 0 49. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 169 Power Door Locks . Remote Start Auto Heat Seats Remote Start Auto Heat Seats Select and the following may . Remote Left in Vehicle Alert If equipped and turned on, this display: feature will turn the heated seats on Remote Unlock Light Feedback when using remote start on . Auto Door Unlock When on, the exterior lamps will cold days. . Delayed Door Lock flash when unlocking the vehicle Select Off or On. with the RKE transmitter. Auto Door Unlock Select Off or Flash Lights. Remote Left in Vehicle Alert This allows selection of which of the This feature sounds an alert when doors will automatically unlock when Remote Lock Feedback the RKE transmitter is left in the the vehicle is shifted into P (Park). This allows selection of what type of vehicle. Select Off, All Doors, or Driver Door. feedback is given when locking the Select Off or On. vehicle with the RKE transmitter. Delayed Door Lock Select Off, Lights and Horn, Lights Bluetooth When on, this feature will delay the Only, or Horn Only. locking of the doors. To override the Select and the following may display: delay, press the power door lock Remote Door Unlock switch on the door. Pair New Device This allows selection of which doors . Select Off or On. will unlock when pressing K on the . Discoverable Remote Lock, Unlock, Start RKE transmitter. . Device Management Select and the following may Select All Doors or Driver Door. . Ringtones display: Remote Start Auto Cool Seats . Voice Mail Numbers . Remote Unlock Light Feedback If equipped and turned on, this . Text Message Alerts . Remote Lock Feedback feature will turn the ventilated seats on when using remote start on . Remote Door Unlock warm days. . Remote Start Auto Cool Seats Select Off or On. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

170 Instruments and Controls Pair New Device Voice Mail Numbers Android Auto Select to pair a new device. See This feature displays the voice mail Select and the following may “Pairing” under Bluetooth number for all connected phones. display: (Overview) 0 211 or Bluetooth To change the voice mail number, . Android Auto (Infotainment Controls) 0 213 or select EDIT. Type a new number, “Pairing” in “Infotainment Controls” then select Save. . Manage Android Auto Devices under Bluetooth in the infotainment Android Auto manual. Text Message Alerts This allows the feature to be turned This feature allows Android devices Discoverable on or off. to be connected to the infotainment system through a USB port. This allows the system to find a Select Off or On. device. Select Off or On. Select Off or On. Apple CarPlay Manage Android Auto Devices Select and the following may Device Management display: Select to manage Android devices. Select to connect to a different Android Auto must be on for this Apple CarPlay phone source, disconnect a phone, . feature to be accessed. or delete a phone. . Manage Apple CarPlay Devices USB Auto Launch Ringtones Apple CarPlay This allows Android and Apple Select to change the ring tone for This feature allows Apple devices to CarPlay devices to automatically the specific phone. The phone does be connected to the infotainment connect when plugged into the not need to be connected to change system through a USB port. USB port. the ring tones. Select Off or On. Select Off or On. Manage Apple CarPlay Devices Select to manage Apple devices. Apple CarPlay must be on for this feature to be accessed. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 171 Voice Display “What Can I Say?” Tips Guidance Lines Select and the following may This feature gives voice Select to turn Off or On. See display: command tips. Assistance Systems for Parking or Backing 0 289. . Confidence Threshold Select Off or On. . Prompt Length Display Rear Park Assist Symbols Select to turn Off or On. See . Audio Feedback Speed Select and the following may Assistance Systems for Parking or display: . Display “What Can I Say?” Tips Backing 0 289. . Calibrate Touchscreen Confidence Threshold Return to Factory Settings . Turn Display Off This feature allows the adjustment Select and the following may of the sensitivity of the speech Calibrate Touchscreen display: recognition system. Select to calibrate the touchscreen, . Restore Vehicle Settings Select Confirm More or then follow the prompts. Confirm Less. . Clear All Private Data Turn Display Off Prompt Length . Restore Radio Settings Select to turn the display off. Touch This feature adjusts the voice anywhere on the infotainment Restore Vehicle Settings prompt length. display area or press any controls This allows selection of restoring Select Short or Long. on the radio center stack to turn the vehicle settings. display on. Audio Feedback Speed Select Restore or Cancel. Rear Camera This feature adjusts the audio Clear All Private Data feedback speed. Select and the following may This allows selection to clear all display: Select Slow, Medium, or Fast. private information from the vehicle. . Guidance Lines Select Delete or Cancel. . Rear Park Assist Symbols GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

172 Instruments and Controls Restore Radio Settings Universal Remote instructions refer to a garage door This allows selection to restore opener, but can be used for other radio settings. System devices. Select Restore or Cancel. See Radio Frequency Statement Do not use the Universal Remote 0 475. system with any garage door opener Software Information that does not have the stop and reverse feature. This includes any Select to view the infotainment Universal Remote System garage door opener model system current software information. Programming manufactured before April 1, 1982. Wi-Fi Read the instructions completely Select and the following may before programming the Universal display: Remote system. It may help to have another person assist with the . Wi-Fi programming process. . Manage Wi-Fi Networks Keep the original hand-held Wi-Fi transmitter for use in other vehicles as well as for future programming. This feature allows Wi-Fi networks Erase the programming when to be turned off or on. vehicle ownership is terminated. Select Off or On. See “Erasing Universal Remote System Buttons” later in this Manage Wi-Fi Networks If equipped, these buttons are in the section. Select to manage Wi-Fi networks. overhead console. To program a garage door opener, Wi-Fi must be on for this feature to park outside directly in line with and be accessed. This system can replace up to three remote control transmitters used to facing the garage door opener activate devices such as garage receiver. Clear all people and door openers, security systems, and objects near the garage door. home automation devices. These GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 173 Make sure the hand-held transmitter system buttons to be used to second button press may has a new battery for quick and operate the garage door. Do be required. For a second accurate transmission of the not release either button until time, press and hold the radio-frequency signal. the indicator light goes from a newly programmed button slow to a rapid flashing light. for five seconds. If the light Programming the Universal Then release both buttons. stays on or the garage door Remote System Some garage door openers moves, programming is For questions or programming help, may require substitution of complete. see www.homelink.com/gm or call Step 2 with the procedure . If the indicator light blinks 1-800-355-3515. under “Radio Signals for rapidly for two seconds, Programming involves Canada and Some Gate then changes to a solid light time-sensitive actions, and may time Operators” later in this section. and the garage door does out causing the procedure to be 3. Press and hold the newly not move, continue with repeated. programmed Universal Remote programming Steps 4–6. To program up to three devices: system button for five seconds while watching the indicator 1. Hold the end of the hand-held light and garage door transmitter about 3 to 8 cm (1 activation. to 3 in) away from the Universal Remote system . If the indicator light stays on buttons with the indicator light continuously or the garage in view. The hand-held door moves when the transmitter was supplied by the button is pressed, then manufacturer of the garage programming is complete. Learn or Smart Button door opener receiver. There is no need to complete Steps 4–6. 4. After completing Steps 1–3, 2. At the same time, press and locate the Learn or Smart If the indicator light does hold both the hand-held . button inside the garage on the not come on or the garage transmitter button and one of garage door opener receiver. the three Universal Remote door does not move, a GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

174 Instruments and Controls The name and color of the Repeat the process for light will flash slowly at first and then button may vary by programming the two remaining rapidly. Proceed with Step 3 under manufacturer. buttons. “Programming the Universal Remote System” to complete. 5. Press and release the Learn or Radio Signals for Canada and Smart button. Step 6 must be Some Gate Operators completed within 30 seconds of Universal Remote System pressing this button. For questions or programming help, Operation see www.homelink.com/gm or call 6. Inside the vehicle, press and 1-800-355-3515. Using the Universal Remote hold the newly programmed System Universal Remote system Canadian radio-frequency laws and button for two seconds and some U.S. gate operators require Press and hold the appropriate then release it. If the garage transmitter signals to time out or quit Universal Remote system button for door does not move or the after several seconds of at least one-half second. The lamp on the garage door transmission. This may not be long indicator light will come on while the opener receiver does not flash, enough for the Universal Remote signal is being transmitted. system to pick up the signal during press and hold the same Erasing Universal Remote button a second time for programming. System Buttons two seconds, then release it. If the programming did not work, Again, if the door does not replace Step 2 under “Programming Erase all programmed buttons when move or the garage door lamp the Universal Remote System” with vehicle ownership is terminated. does not flash, press and hold the following: To erase: the same button a third time for two seconds, then release it. Press and hold the Universal 1. Press and hold the two outside Remote system button while buttons until the indicator light The Universal Remote system pressing and releasing the begins to flash. This should should now activate the hand-held transmitter button every take about 10 seconds. garage door. two seconds until the signal has been successfully accepted by the 2. Release both buttons. Universal Remote system. The Universal Remote system indicator GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Instruments and Controls 175 Reprogramming a Single Universal Remote System Button To reprogram any of the system buttons: 1. Press and hold any one of the buttons. Do not release the button. 2. The indicator light will begin to flash after 20 seconds. Without releasing the button, proceed with Step 1 under “Programming the Universal Remote System.” GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

176 Lighting Lighting Features Exterior Lighting Lighting Entry Lighting ...... 184 Exit Lighting ...... 184 Exterior Lamp Controls Exterior Lighting Battery Load Management . . . 184 Battery Power Protection . . . . . 185 Exterior Lamp Controls ...... 176 Exterior Lighting Battery Exterior Lamps Off Saver ...... 185 Reminder ...... 178 Headlamp High/Low-Beam Changer ...... 179 Flash-to-Pass ...... 179 Daytime Running Lamps (DRL) ...... 179 Automatic Headlamp System ...... 179 The exterior lamp control is on the Hazard Warning Flashers . . . . . 180 instrument panel to the left of the Turn and Lane-Change steering wheel. Signals ...... 181 Fog Lamps ...... 181 O (Off) : Turns off the automatic Auxiliary headlamps and Daytime Running Roof-Mounted Lamp ...... 182 Lamps (DRL). Turn the headlamp control to the off position again to Interior Lighting turn the automatic headlamps or Instrument Panel Illumination DRL back on. Control ...... 182 Cargo Lamp ...... 183 For vehicles first sold in Canada, off Dome Lamps ...... 183 will only work when the vehicle is in Reading Lamps ...... 183 P (Park). GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Lighting 177 AUTO (Automatic) : Automatically When the headlamps are turned on The system turns the high-beam turns on the headlamps, parking while the vehicle is on, the headlamps on when it is dark lamps, taillamps, instrument panel headlamps turn off automatically enough and there is no other traffic lights, roof marker lamps (if 10 minutes after the ignition is present. equipped), front/rear sidemarker turned off. When the headlamps are lamps, and license plate lamps. turned on while the vehicle is off, When the vehicle is turned off and the headlamps will stay on for the headlamps are in AUTO, the 10 minutes before turning off to headlamps turn off. When the key is prevent the battery from being removed, they automatically turn on drained. Turn the headlamp control for a set time. The time of the delay off and then back to the headlamp can be changed using the DIC. on position to make the headlamps This light comes on in the See Driver Information Center (DIC) stay on for an additional 10 minutes. instrument cluster when the (Uplevel and Denali Cluster) 0 160 To keep the lamps on for more than IntelliBeam system is enabled. or Driver Information Center (DIC) 10 minutes, the ignition must be in Turning On and Enabling (Base Level Cluster) 0 158. the ACC/ACCESSORY or ON/RUN position. IntelliBeam ; (Parking Lamps) : Turns on the # To enable the IntelliBeam system, parking lamps including all lamps, (Fog Lamps) (If Equipped) : with the turn signal lever in the except the headlamps. Turns on the fog lamps. See Fog Lamps 0 181. neutral position, turn the exterior For some trim levels and series of ® lamp control to AUTO. The blue trucks first sold in Canada, the IntelliBeam System high-beam on light appears on the headlamps will turn on with the If equipped, this system turns the instrument cluster when the high parking lamps. vehicle's high-beam headlamps on beams are on. 2 (Headlamps) : Turns on the and off according to surrounding Driving with IntelliBeam headlamps together with the parking traffic conditions. lamps and instrument panel lights. The system only activates the high beams when driving over 40 km/h (25 mph). GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

178 Lighting There is a sensor near the top . The IntelliBeam system can be . The other vehicle's lamps cannot center of the windshield that disabled by the high/low-beam be detected due to dense automatically controls the system. changer or the flash-to-pass exhaust, smoke, fog, snow, road Keep this area of the windshield feature. If this happens, the high/ spray, mist, or other airborne clear of debris to allow for best low-beam changer must be obstructions. system performance. activated on then off within . The vehicle's windshield is dirty, The high-beam headlamps remain two seconds to reactivate the cracked, or obstructed by on, under the automatic control, IntelliBeam system. The something that blocks the view until one of the following situations instrument cluster light will come of the light sensor. occurs: on to indicate the IntelliBeam is reactivated. See Headlamp . The vehicle is loaded such that . The system detects an High/Low-Beam Changer 0 179 the front end points upward, approaching vehicle's and Flash-to-Pass 0 179. causing the light sensor to aim headlamps. high and not detect headlamps The high beams may not turn off and taillamps. . The system detects a preceding automatically if the system cannot vehicle's taillamps. detect another vehicle's lamps . Driving on winding or hilly roads. . The outside light is bright because of any of the following: The automatic high-beam enough that high-beam . The other vehicle's lamps are headlamps may need to be disabled headlamps are not required. missing, damaged, obstructed if any of the above conditions exist. . The vehicle's speed drops below from view, or otherwise 20 km/h (12 mph). undetected. Exterior Lamps Off . The other vehicle's lamps are Reminder covered with dirt, snow, and/or A reminder chime sounds when the road spray. headlamps or parking lamps are manually turned on, the ignition is off, and a door is open. To disable the chime, turn the lamps off. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Lighting 179 Headlamp High/ To use it, pull the turn signal lever . The transmission is not in Low-Beam Changer toward you, then release it. P (Park). If the headlamps are in the . The light sensor determines it is Push the turn signal lever toward automatic position or on low beam, daytime. the instrument panel to change the the high-beam headlamps will turn headlamps from low to high beam. When the DRL system is on, only on. Depending on the type of the DRL are on. The taillamps, Pull the turn signal lever toward you headlamp, they will either turn off sidemarker lamps, instrument panel and release it to return to low-beam after a short duration or stay on as lights, and other lamps will not headlamps. long as you hold the lever toward be on. you. The high-beam indicator on the instrument cluster will come on. When it begins to get dark, the Release the lever to return to automatic headlamp system normal operation. switches from DRL to the headlamps. Daytime Running To turn off the DRL, turn the exterior Lamps (DRL) lamp control to O and then release. When the high-beam headlamps are DRL can make it easier for others to For vehicles first sold in Canada, off on, this indicator light on the will only work when the vehicle is instrument cluster will also be on. see the front of the vehicle during the day. Fully functional DRL are parked. required on all vehicles first sold in Flash-to-Pass Canada. Automatic Headlamp This feature lets you use the The DRL system comes on when System high-beam headlamps to signal a the following conditions are met: When the exterior lamp control is driver in front of you that you want set to AUTO and it is dark enough to pass. It works even if the . The ignition is on. outside, the headlamps come on headlamps are in the automatic . The exterior lamp control is automatically. position. in AUTO. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

180 Lighting is in the full bright position. See Hazard Warning Flashers Instrument Panel Illumination Control 0 182. When it is bright enough outside, the headlamps will turn off or may change to Daytime Running Lamps (DRL). The automatic headlamp system There is a light sensor on top of the turns off when the exterior lamp instrument panel. Do not cover the control is turned to O or the ignition sensor, otherwise the headlamps is off. will come on when they are not needed. Lights On with Wipers The system may also turn on the If the windshield wipers are headlamps when driving through a activated in daylight with the engine | : Press this button to make the parking garage or tunnel. on, and the exterior lamp control is front and rear turn signal lamps in AUTO, the headlamps, parking If the vehicle is started in a dark flash on and off. Press again to turn lamps, and other exterior lamps the flashers off. garage, the automatic headlamp come on. The transition time for the system comes on immediately. If it lamps coming on varies based on When the hazard warning flashers is light outside when the vehicle wiper speed. When the wipers are are on, the vehicle's turn signals will leaves the garage, there is a slight not operating, these lamps turn off. not work. delay before the automatic Move the exterior lamp control to O headlamp system changes to the DRL. During that delay, the or ; to disable this feature. instrument cluster may not be as bright as usual. Make sure the instrument panel brightness control GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Lighting 181 Turn and Lane-Change The lever returns to its starting Fog Lamps Signals position whenever it is released. If after signaling a turn or a lane change the arrows flash rapidly or do not come on, a signal bulb could be burned out. If equipped with LED turn signals, see your dealer. Replace any burned out bulbs. If a bulb is not burned out, check the fuse. See Fuses and Circuit Breakers 0 381. If equipped, the control is on the An arrow on the instrument cluster Turn Signal On Chime center of the exterior lamp control, flashes in the direction of the turn or If the turn signal is left on for more to the left of the steering column. lane change. than 1.2 km (0.75 mi), a chime The ignition must be in the ON/RUN Move the turn signal lever all the sounds at each flash of the turn position for the fog lamps to way up or down to signal a turn. signal. The message TURN come on. SIGNAL ON will also appear in the # (Fog Lamps) : Press to turn the Raise or lower the lever for less Driver Information Center (DIC). To fog lamps on or off. A light will come than one second until the arrow turn the chime and message off, on in the instrument cluster. starts to flash to signal a lane move the turn signal lever to the off change. This causes the turn position. When the fog lamps are turned on, signals to automatically flash three the parking lamps automatically times. It will flash six times if Tow/ turn on. Haul Mode is active. Holding the When the headlamps are changed turn signal lever for more than to high beam, the fog lamps go off. one second will cause the turn When the high-beam headlamps are signals to flash until the lever is turned off, the fog lamps will come released. on again. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

182 Lighting Some localities have laws that this button. Pressing the top of the Interior Lighting require the headlamps to be on with button will turn off the roof-mounted the fog lamps. lamp and indicator. Instrument Panel The emergency roof lamp circuit is Auxiliary fused at 30 amps, so the total Illumination Control Roof-Mounted Lamp current draw of the attached lamps should be less than this value. The If equipped, this button includes attachment points for the roof lamp wiring provisions for a dealer or a circuits are two blunt cut wires qualified service center to install an above the overhead console: a dark auxiliary roof lamp. green with blue stripe switched power wire and a black ground wire. For information on roof-mounted emergency lamp installation, see www.gmupfitter.com or contact your This feature controls the brightness dealer. of the steering wheel and instrument If the vehicle has this button, the panel lights. The instrument panel vehicle may have the snow plow illumination control is next to the prep package. See Add-On exterior lamp control. 0 Electrical Equipment 336. D : Move the thumbwheel up or This button is on the overhead down to brighten or dim the lights. console. When the wiring is connected to an auxiliary roof-mounted lamp, pressing the bottom of the button will activate the lamp and illuminate an indicator light at the bottom of GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Lighting 183 Cargo Lamp Dome Lamps Reading Lamps

The cargo lamp provides more light There are dome lamps in the There are reading lamps in the in the cargo area or on the sides of overhead console and the headliner, overhead console and the headliner, the vehicle, if needed. The lights if equipped. if equipped. To operate, the inside the pickup box and/or on the To change the dome lamp settings, ignition must be on or in ACC/ outside mirrors also turn on, press the following: ACCESSORY, or using Retained if equipped. Accessory Power (RAP). OFF : Turns the lamps off, even Press the switch to turn the cargo when a door is open. lamp on or off. An indicator light will turn on when the lamp is turned on, DOOR : The lamps come on if equipped. The shift lever must be automatically when a door is in P (Park) to operate the cargo opened. lamp. The lights on the outside ON : Turns all dome lamps on. rearview mirrors turn on if the shift lever is in R (Reverse), N (Neutral), or P (Park). GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

184 Lighting Lighting Features on for a set amount of time and then automatically turn off. The interior lamps do not come on if the dome Entry Lighting lamp control is in the Off position. Some exterior lamps and the interior The exterior lamps turn off lamps turn on briefly at night, or in immediately by turning the exterior areas with limited lighting, when K lamps control off. is pressed on the Remote Keyless This feature can be changed. See Entry (RKE) transmitter. When a Vehicle Personalization 0 165. Press m or n next to each reading door is opened, the interior lamps lamp to turn it on or off. come on if the dome lamp control is in the DOOR position. After about Battery Load 30 seconds the exterior lamps turn Management off. Entry lighting can be disabled The vehicle has Electric Power manually by changing the ignition Management (EPM), which out of the OFF position, or by estimates the battery's temperature pressing the RKE transmitter Q and state of charge. It then adjusts button. the voltage for best performance This feature can be changed. See and extended life of the battery. “Vehicle Locator Lights” under When the battery's state of charge Vehicle Personalization 0 165. is low, the voltage is raised slightly to quickly bring the charge back up. Exit Lighting When the state of charge is high, the voltage is lowered slightly to Some exterior lamps and the interior prevent overcharging. The voltmeter lamps come on at night, or in areas gauge or the voltage display on the with limited lighting when the key is Driver Information Center (DIC), removed from the ignition. The if equipped, may show the voltage exterior and interior lamps remain GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Lighting 185 moving up or down. This is normal. Normally, these actions occur in timer, turn the exterior lamp control If there is a problem, an alert will be steps or levels, without being to the O position and then back to displayed. noticeable. In rare cases at the the ; or 2 position. The battery can be discharged at highest levels of corrective action, idle if the electrical loads are very this action may be noticeable to the To keep the lamps on for more than high. This is true for all vehicles. driver. If so, a DIC message might 10 minutes, the ignition must be on This is because the generator be displayed and it is recommended or in ACC/ACCESSORY. (alternator) may not be spinning fast that the driver reduce the electrical enough at idle to produce all the loads as much as possible. power that is needed for very high electrical loads. Battery Power Protection A high electrical load occurs when This feature shuts off the dome and several of the following are on, such reading lamps, if they are left on for as: headlamps, high beams, fog more than 10 minutes after the lamps, rear window defogger, ignition is turned off. The cargo climate control fan at high speed, lamp shuts off after 20 minutes. This heated seats, engine cooling fans, prevents the battery from trailer loads, and loads plugged into running down. accessory power outlets. EPM works to prevent excessive Exterior Lighting Battery discharge of the battery. It does this Saver by balancing the generator's output The exterior lamps turn off about and the vehicle's electrical needs. 10 minutes after the ignition is It can increase engine idle speed to turned off, if the parking lamps or generate more power, whenever headlamps have been manually left needed. It can temporarily reduce on. This protects against draining the power demands of some the battery. To restart the 10-minute accessories. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

186 Infotainment System Phone Introduction Infotainment Bluetooth (Overview) ...... 211 System Bluetooth (Infotainment Controls) ...... 213 Infotainment Apple CarPlay and Base radio information is included in Introduction Android Auto ...... 217 this manual. See the infotainment manual for information on other Infotainment ...... 186 Trademarks and License Theft-Deterrent Feature ...... 187 available infotainment systems. Overview ...... 188 Agreements Trademarks and License Read the following pages to Home Page ...... 189 become familiar with the features. Software Updates ...... 189 Agreements ...... 218 Radio { Warning AM-FM Radio ...... 190 Satellite Radio ...... 192 Taking your eyes off the road for Radio Reception ...... 193 too long or too often while using Fixed Mast Antenna ...... 194 any infotainment feature can Multi-Band Antenna ...... 194 cause a crash. You or others could be injured or killed. Do not Audio Players give extended attention to Avoiding Untrusted Media infotainment tasks while driving. Devices ...... 195 Limit your glances at the vehicle CD Player ...... 195 USB Port ...... 197 displays and focus your attention Auxiliary Jack ...... 203 on driving. Use voice commands Bluetooth Audio ...... 204 whenever possible. Voice Recognition Voice Recognition ...... 205 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Infotainment System 187 The infotainment system has built-in . Set up the audio by presetting Theft-Deterrent Feature features intended to help avoid favorite stations, setting the distraction by disabling some tone, and adjusting the TheftLock is designed to discourage functions when driving. These speakers. theft of the vehicle's radio by functions may gray out when they learning a portion of the Vehicle . Set up phone numbers in Identification Number (VIN). The are unavailable. Many infotainment advance so they can be called features are also available through radio does not operate if it is stolen easily by pressing a single or moved to a different vehicle. the instrument cluster and steering control or by using a single voice wheel controls. command if equipped with Before driving: Bluetooth phone capability. . Become familiar with the See Defensive Driving 0 236. operation, center stack controls, To play the infotainment system with and infotainment display the ignition off, see Retained controls. Accessory Power (RAP) 0 260. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

188 Infotainment System Overview 1. { . Press to go to the Home Page. See Home Page 0 189. 2. 7 . Radio: Press and release to go to the previous station or channel. Press and hold to fast seek the next strongest previous station or channel. . USB/Bluetooth Music/ Pictures: Press and hold to go to the previous content. Press and hold to fast rewind. 3. O . Press to turn the power on. . Press and hold to turn the power off. . Press to mute the system when on. . Turn to decrease or increase the volume. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Infotainment System 189 4. 6 Home Page Features Settings : Touch to access the Personalization menu. See Vehicle . Radio: Press and release to Personalization 0 165. go to the next station or channel. Press and hold to Climate : Touch to access the fast seek the next strongest Climate menu. See Climate Control 0 station or channel. Systems (with Heater Only) 224 or Climate Control Systems (with Air . USB/Bluetooth Music/ Conditioning) 0 226. Pictures: Press and hold to go to the next content. OnStar : If equipped, touch to Press and hold to fast access the OnStar menu. See OnStar Overview 0 479. forward. Press { to go to the Home Page. 5. # Audio : Touch to select AM, FM, Software Updates SiriusXM (if equipped), USB/iPod/ . Press and release to Over-the-Air Software Updates access the phone screen, Bluetooth Audio, or AUX. answer an incoming call, Gallery : Touch to view a picture or If equipped, the infotainment system or access the device home movie. can download and install select screen. Press and hold to software updates over a wireless access Press to Talk. Phone : Touch to activate the connection. The system will prompt phone features (if equipped). for certain updates to be 0 Home Page See Bluetooth (Overview) 211 or downloaded and installed. There is Bluetooth (Infotainment Controls) also an option to check for updates 0 Touchscreen Buttons 213. manually. Touchscreen buttons show on the Projection : Touch to access USB screen when available. When a supported devices when connected. 0 function is unavailable, the button See USB Port 197. may gray out. When a function is selected, the button may highlight. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

190 Infotainment System To manually check for updates, To connect the infotainment system Radio touch SETTINGS on the Home to a secured mobile device hotspot, Page, followed by Software home hotspot, or a public hotspot, Information, and then System touch SETTINGS on the Home AM-FM Radio Update. Follow the on-screen Page, followed by Wi-Fi, and then Playing the Radio prompts. Steps for downloading and Manage Wi-Fi Networks. Select the installing updates may vary by appropriate Wi-Fi network, and Audio Source Menu vehicle. follow the on-screen prompts. { : Press to go to the Home Page. Download speeds may vary. Downloading Over-the-Air vehicle O : Press to turn on, mute, software updates requires Internet On most compatible mobile devices, or unmute the system. Press and connectivity, which can be accessed activation of the Wi-Fi hotspot is in hold to turn off the system. through the vehicle’s built-in OnStar the Settings menu under Mobile 4G LTE connection, if equipped and Network Sharing, Personal Hotspot, Selecting a Band active. If required, data plans are Mobile Hotspot or similar. Press {, then touch AUDIO, provided by a third party. Optionally, Availability of Over-the-Air vehicle a secure Wi-Fi hotspot such as a Source, then select AM, FM, software updates varies by vehicle or SXM, if equipped. The last station compatible mobile device hotspot, and country. For more information home hotspot or public hotspot can that was playing starts playing on this feature, see my.gmc.com/ again. be used. Applicable data rates may learn. apply. System Settings Auto Volume This feature automatically adjusts the radio volume to compensate for road and wind noise. The level of volume compensation can be selected, or the feature can be turned off. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Infotainment System 191 1. Touch MENU from a source . Touch Custom. Manual Tuning screen. . Bass, Midrange, or Treble: Continue touching t or u to 2. Select Auto Volume. Touch − or +. manually change the radio station. 3. Select the desired setting. . Fader or Balance: Adjust the Direct Tune front/rear or left/right speakers 4. Touch 3 to go back to the by dragging the dot in the From the AM or FM menu: source screen. vehicle image on the screen. . Touch Tune. Tone Settings Touch 3 to go back to the source . Enter the station number. The tone settings can be set for screen. t u each radio band and each audio . Touch Go or or to go to player source. Selecting an Auxiliary Device the previous or next station. Connect the auxiliary device to the Preset Tone Settings Favorite AUX input terminal. Play will begin . Touch MENU. when the system has finished . Touch S or T to scroll through . Touch Tone Settings. reading the information on the the favorites. device. . Select a preset tone setting. . Touch on the station to select it. If the AUX device is already . Bass, Midrange, or Treble: Station List connected, press {, AUDIO, Touch − or +. Source, then select the device. . From the AM or FM menu, . Fader or Balance: Adjust the touch MENU. front/rear or left/right speakers Selecting a Station . Select Station List. by dragging the dot in the Seek Tuning vehicle image on the screen. . Touch Q or R to scroll through If the radio station is not known: the list. Touch the station to Custom Tone Settings select it. Press 7 or 6 to automatically . Touch MENU. search for available radio stations. . Touch Tone Settings. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

192 Infotainment System Update Station List 3. Touch and hold down any of 1-888-601-6296(U.S.), and . From the AM or FM menu, touch the preset buttons to save the www.siriusxm.ca or MENU, then touch Update current radio station to that 1-877-438-9677(Canada). Station List. The broadcasting button of the selected favorites page. Listening to SiriusXM Radio (If list updating will begin. Equipped) To change a preset button, tune to . During the AM or FM { broadcasting list update, touch the new desired radio station and 1. Press . touch and hold the preset button. Cancel to stop the updates. 2. Touch AUDIO. Storing a Station as a Favorite Satellite Radio 3. Touch Source. Stations from all bands can be Vehicles with an SXM Satellite 4. Touch SXM and the most stored in any order in the favorite Radio tuner and a valid SiriusXM recent listened to SiriusXM pages. Satellite Radio subscription can channel will display. Up to 25 stations can be stored. receive SiriusXM programming. Selecting a Category Storing Stations SiriusXM Satellite Radio From Menu, touch Categories, then Service (If Equipped) touch the desired category or from To store the station to a position in the list, touch the corresponding SiriusXM is a satellite radio service Categories, touch Q or R to find the button 1−5 until a beep is heard. based in the 48 contiguous United desired channel. Touch the channel States and 10 Canadian provinces. to select it. 1. Select the desired station. SiriusXM Satellite Radio has a wide Selecting a Channel 2. Touch S or T to select the variety of programming and desired page of saved commercial-free music, coast to Touch u or t and the previous or favorites. coast, and in digital-quality sound. next channel will be selected. A service fee is required to receive the SiriusXM service. For more Touch and hold u or t to jump information, contact SiriusXM at four channels backward or forward, www.siriusxm.com or then release the button at the desired channel. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Infotainment System 193 Using the Preset Buttons Channel List 2. Touch Q or R to find the Up to seven favorites pages can be 1. Touch Channel List from the desired category. Touch the saved, and each page can store up SXM menu. The channel list is category to select it. to five channels. displayed. Explicit Content Filter To change a preset button, tune to 2. Touch Q or R to find the When on, only a filtered list of the new desired channel and hold desired channel. Tune to the channels will be received. When off, the button. channel by selecting it. all regular SXM programming Listening to Preset Channels Tone Settings subscribed to will be received. 1. Touch SXM Explicit Filter. 1. Continue touching S or T to From the tone settings menu, the select the desired sound features can be set up for 2. Select On or Off. favorites page. SiriusXM audio and each audio player s functions. 2. Touch the preset button to ’ Radio Reception listen to the channel saved to 1. Touch Tone Settings. The tone Frequency interference and static that button. settings screen is displayed. can occur during normal radio See “Tone Settings” in AM-FM Using the SiriusXM Menu reception if items such as phone Radio 0 190. chargers, vehicle convenience Operation 2. Touch OK. accessories, and external electronic devices are plugged into the 1. Touch MENU on the SXM radio Auto Volume accessory power outlet. If there is screen. 1. Touch Auto Volume. See “Auto interference or static, unplug the 2. Touch the menu to select the Volume” in AM-FM Radio item from the accessory power desired item or to display the 0 190. outlet. detail menu item. 2. Touch OK. FM 3. Touch 0 to return to the Categories FM signals only reach about 16 to previous menu. 65 km (10 to 40 mi). Although the 1. Touch Categories. radio has a built-in electronic circuit GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

194 Infotainment System that automatically works to reduce Cell Phone Usage Multi-Band Antenna interference, some static can occur, Cell phone usage, such as making especially around tall buildings or The multi-band antenna is on the or receiving phone calls, charging, hills, causing the sound to fade in roof of the vehicle. The antenna is or just having the phone on may and out. used for OnStar, the SiriusXM cause static interference in the Satellite Radio Service System, and AM radio. Unplug the phone or turn it off GPS (Global Positioning System), if this happens. The range for most AM stations is if the vehicle has these features. greater than for FM, especially at Keep the antenna clear of night. The longer range can cause Fixed Mast Antenna obstructions for clear reception. station frequencies to interfere with The fixed mast antenna will go If the vehicle has a sunroof, and it is each other. Static can also occur through most car washes as long as open, reception can also be when things like storms and power it is securely attached. If the affected. lines interfere with radio reception. antenna becomes slightly bent, Items on the roof of the vehicle can When this happens, try reducing the straighten it out by hand. If it is interfere with the performance of the treble on the radio. badly bent, replace it. radio system and OnStar (if SiriusXM Satellite Radio Occasionally check that the antenna equipped). Make sure the Service is tight at the base. If tightening is multi-band antenna is not required, protect the paint from obstructed. If equipped, SiriusXM Satellite damage. Radio Service provides digital radio reception. Tall buildings or hills can interfere with satellite radio signals, causing the sound to fade in and out. In addition, traveling or standing under heavy foliage, bridges, garages, or tunnels may cause loss of the SiriusXM signal for a period of time. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Infotainment System 195 Audio Players . CD-RW . Use a marking pen to label the . MP3 or unprotected WMA top of the disc. Avoiding Untrusted Media formats Loading and Ejecting Discs Devices When playing any compatible To load a disc: recordable disc, the sound quality When using media devices such as can be reduced due to disc quality, 1. Turn the vehicle on. CDs, DVDs, Blu-ray Discs, SD the method of recording, the quality 2. Insert a disc into the slot, label cards, USB devices, and mobile of the music that has been side up. The player pulls it in devices, consider the source. recorded, or the way the disc has the rest of the way. If the disc Untrusted media devices could been handled. is damaged or improperly contain files that affect system loaded, there is an error and operation or performance. Avoid use There can be increased skipping, the disc ejects. if the content or origin cannot be difficulty in finding tracks, and/or trusted. difficulty in loading and ejecting. Playing an Audio CD If these problems occur, check the CD Player disc for damage or try a known Press MEDIA until CD is selected. good disc. On the CD main page, either a track If the vehicle is equipped with a CD To avoid damage to the CD player: number displays at the beginning of player, it can be used for CD and each track, or Song, Artist, and MP3 audio. . Do not use scratched or Album information displays when With the vehicle on, insert a disc damaged discs. available. into the slot, label side up. Press the . Do not apply labels to discs. The Use the following screen controls to MEDIA button to select CD as a labels could get caught in the play the disc: source. player. t: While on the CD main page: The system is capable of . Insert only one disc at a time. playing most: . Touch to seek to the beginning . Keep the loading slot free of of the current or previous track. . Audio CDs foreign materials, liquids, and If the track has been playing for . CD-R debris. less than five seconds, it seeks GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

196 Infotainment System to the previous track. If longer CD Menu Error Messages than five seconds, the current While on the CD main page, press If Disc Error displays and/or the disc track starts from the beginning. the MENU knob to display the CD comes out, it could be for one of the . Touch and hold to fast reverse menu and the following may display: following reasons: through a track. Release the Browse : Select to display the files . The disc has an invalid or button to return to playing or songs on the CD. unknown format. speed. Elapsed time displays. Tone Settings : Select to adjust . The disc is very hot. Try the disc u: While on the CD main page: Bass, Midrange, Treble, Balance, again when the temperature . Touch to seek to the next track. Fade, and EQ (Equalizer). See returns to normal. Tone Settings under AM-FM Radio . Touch and hold to fast forward “ ” . The road is very rough. Try the 0 190. through a track. Release the disc again when the road is button to return to playing Auto Volume : If equipped, this smoother. speed. Elapsed time displays. feature adjusts the volume based on . The disc is dirty, scratched, wet, the vehicle speed. Select the level j /r: While on the CD main page, or upside down. touch to pause. Touch again to between Off, Low, Medium-Low, . The air is very humid. Try the resume. Medium, Medium-High, and High. Press BACK to go to the disc again later. Z: Touch Z to play the songs in previous menu. . There was a problem while random order. Touch again to burning the disc. turn off. DSP : If equipped, this feature adjusts the pre-defined settings. . The label is caught in the CD If a Blu-ray Disc or DVD disc is 0 See “DSP” in AM-FM Radio 190. player. loaded into the disc player and the CD screen button is selected, a EQ (Equalizer) : If equipped, this If Disc Player Error displays, it could message comes on the screen to feature adjusts the equalizer be for one of the following reasons: use the Video application. The settings. See “EQ (Equalizer)” in AM-FM Radio 0 190. . The player temperature is Video application is only available too high. on vehicles with Rear Seat Entertainment (RSE). . There are load or eject errors. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Infotainment System 197 If the CD is not playing correctly for Root Directory USB Support any other reason, try a known The root directory is treated as a If equipped, there are USB ports is good CD. folder. All files contained directly in the center stack below the climate If any error continues, contact your under the root directory are controls, in the glove box, in the dealer. accessed prior to any root directory center console under the armrest, folders. and at the rear of the center Playing an MP3 CD console. All ports use the USB 2.0 Empty Folders To play an MP3 CD, follow the same standard. instructions as Playing an If a root directory or folder is empty “ USB Supported Devices Audio CD.” or contains only folders, the player advances to the next folder in the . USB Flash Drives The following guidelines must be file structure that contains a met when creating an MP3 disc, . Portable USB Hard Drives compressed audio file. The empty otherwise the CD might not play: folder(s) are not displayed or Not all iPods and USB drives are . Sampling rate: 16 kHz, numbered. compatible with the USB port. 22.05 kHz, 24 kHz, 32 kHz, No Folder Make sure the iPod has the latest 44.1 kHz, and 48 kHz firmware from Apple for proper . Bit rates supported: 8, 16, 24, When the CD only contains operation. iPod firmware can be 32, 40, 48, 56, 64, 80, 96, 112, compressed audio files without any updated using the latest iTunes 128, 144, 160, 192, 224, 256, folders, all files are under the root application. See www.apple.com/ and 320 kbps folder. itunes. . Maximum number of folders: USB Port For help with identifying your iPod, eight folders with 255 files per go to www.apple.com/support. folder Using the USB Port The USB port can play both lower . Maximum of 1,000 files on a disc The infotainment system can play and upper case .mp3, .wma, .ogg, and .wav files stored on a USB . Recorded on a CD-R or CD-RW music by connecting an auxiliary device to the USB port. storage device. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

198 Infotainment System Supported Apple Devices ACCESSORY. See Ignition . ID3 Tag information for MP3 0 To view supported devices in U.S., Positions 256. When the vehicle is files, such as the album name see www.my.gmc.com\learn. turned off, the iPod/iPhone and the artist, can be played. automatically powers off and will not . To display album title, track title, To view supported devices in charge or draw power from the Canada, see www.gmcowner.ca. and artist information, the file vehicle's battery. should be compatible with the To view supported devices in For more information on USB ID3 Tag V1 and V2 formats. Mexico, see your dealer. usage, see “Audio System Using USB Storage Devices and USB Supported File and Folder Information” following. iPod/iPhone Structure Audio System Information . Use a USB or flash memory type The infotainment system supports: The infotainment system can play storage device. Do not connect . FAT16. the music files contained in the USB using a USB adaptor. storage device or iPod/iPhone . FAT32. . Do not connect and reconnect products. the USB device repeatedly in a . exFAT. Using MP3/WMA/OGG/WAV Files short time, as this may cause Connecting a USB Storage static electricity and problems . Music files with .mp3, .wma, using the device. Device or iPod/iPhone .ogg, and .wav file name extensions can be played. . Use a USB device with a metal To connect a USB storage device, connecting terminal. connect the device to the USB port. . MP3 files that can be played: Bit . Connection with i-Stick Type To connect an iPod/iPhone, connect rate: 8 kbps to 320 kbps. Sampling frequency: 48 kHz, USB storage devices may be one end of the device’s cable to the faulty due to vehicle vibration. iPod/iPhone and the other end to 44.1 kHz, 32 kHz, 24 kHz, 22.05 the USB port. kHz, and 16 kHz. . Do not touch the USB connecting terminal. The iPod/iPhone charges while it is . Files with a bit rate above connected to the vehicle if the 128 kbps will result in higher ignition is on or in ACC/ quality sound. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Infotainment System 199 . Only USB storage devices connected, the USB device may . Some iPod/iPhone product formatted in FAT16/32 or exFAT be damaged or may not operate models may not support the file systems are recognized. normally. connectivity or functionality of NTFS and other file systems are . USB storage devices can only this product. not recognized. be connected for playing music, . Only connect the iPod/iPhone . The time it takes to process files viewing photo files, with connection cables will depend on the USB storage or upgrading. supported by iPod/iPhone device type and capacity, and . Do not use the USB terminal to products. Other connection the type of files stored. charge USB accessory cables cannot be used. . Some USB storage device files equipment. The heat generated . The iPod/iPhone may be may not be compatible. may cause performance issues damaged if it is connected to the . Up to two USB devices and one or damage. vehicle with the ignition on. iPod can be played through a . Music files to which Digital Right When not in use, disconnect the USB hub. All devices may not be Management (DRM) is applied iPod/iPhone. supported, depending on the cannot be played. . When the iPod/iPhone is performance of the USB hub. . USB storage device that are in connected to the USB port by If there is not enough power capacity with a limit of 5,000 using the iPod/iPhone cable, the supply, it may not operate files, such as music, photo, Bluetooth music is not normally. video, 15 stages of folder supported. . Do not disconnect the USB structure. Normal usage cannot . The iPod/iPhone playback storage device while it is playing. be guaranteed for a storage functions and the information This may cause damage to the device that exceeds this limit. displayed may be different when product or affect the The iPod/iPhone can play all played on the infotainment performance of the USB device. music files that are supported. system. . Disconnect the USB storage The music file lists will only device when the ignition is display up to 5,000 files on the turned off. If the ignition is turned screen. These files are sorted in on while the USB device is alphabetical order. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

200 Infotainment System Changing to Next/Previous Files . Touch l to change to the next file. . Touch g within five seconds of the playback time to play the previous file. Returning to the Beginning of the . Refer to the table for the If the USB device is already Current File classification items related to the connected: search function provided by the Touch g after five seconds of the iPod/iPhone. . Press {. playback time. USB Player . Touch AUDIO. Scanning Forward or Backward Playing Music from a USB Device . Touch Source. Touch and hold g or l during playback to rewind or fast forward. Connect the USB device to the . Touch USB. . Release the button to resume USB port. To stop the USB device and select playback at normal speed. Play will start automatically after another media source, touch . Playing a File Randomly the system has finished reading Source, then select the other the USB device. source. Touch Z during playback. . If a non-readable USB device is To remove the USB device, select . ON: Plays all files randomly. connected, an error message another function, then remove the displays and the system will USB device. . OFF: Returns to normal playback. switch to the previous audio Pause function. Using the USB Music Menu . Touch j to pause. . Touch Menu during playback. . Touch r to resume. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Infotainment System 201 MTP (Media Transfer Protocol) . If a non-readable USB device is . Connect a MTP supported connected, an error message device. displays and the system will switch to the previous audio . Play will start automatically after function. the system has finished reading the MTP device. If the iPod/iPhone is already connected: . If a non-readable MTP device is connected, an error message 1. Press {. . Touch the desired menu. displays and the system will 2. Touch AUDIO. Browse Music switch to the previous audio function. 3. Touch Source. 1. Touch Browse Music. iPod/iPhone Player 4. Touch iPod. 2. Touch the desired music. This feature is limited to models To stop the device and select Tone Settings supporting the iPod/iPhone another media source, touch Source, then select the other . Touch Tone Settings. The Tone connection. source. Settings menu is displayed. See Playing Music Files “Tone Settings” in AM-FM Radio To remove the device, select 0 190. . Connect the iPod/iPhone to the another function, then remove the USB port. Auto Volume device. . Play will start from the previously Pause . Touch Auto Volume. The Auto played point after the system Volume menu is displayed. See has finished reading the USB . Touch j to pause. “Auto Volume” in AM-FM Radio device. 0 190. . Touch r to resume. Traffic Program (If Equipped) Changing to Next/Previous Song . Touch On or Off. . Touch l to change to the next song. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

202 Infotainment System . Touch g within two seconds of 2. Touch the desired music. Viewing Pictures the playback time to play the Tone Settings 1. Connect the USB device to the previous file. . Touch Tone Settings. The Tone USB port. Returning to the Beginning of the Settings menu is displayed. See 2. Touch the screen to open to full Current File “Tone Settings” in AM-FM Radio screen. Touch the screen again 0 190. to return to the previous Touch g after two seconds of the screen. playback time. Auto Volume . Touch Auto Volume. The Auto If the USB device is already Scanning Forward or Backward connected: g l Volume menu is displayed. See Touch and hold or during “Auto Volume” in AM-FM Radio 1. Press {. playback to rewind or fast forward. 0 190. Release the button to resume 2. Touch GALLERY. Picture System Information playback at normal speed. Some features are disabled while Playing a File Randomly The infotainment system can view the vehicle is in motion. picture files stored on a USB Touch Z during playback. storage device and devices that Viewing a Slide Show . ON: Plays all files randomly. support Media Transfer 1. Touch z from the picture Protocol (MTP). screen. . OFF: Returns to normal playback. . Supported file extensions: .jpg, 2. Touch the screen to cancel the .bmp, .png, .gif. slide show during the slide Using the iPod Menu . Animated GIF files are not show playback. . Touch Menu during playback. supported. Viewing a Previous or Next . Touch the appropriate . Some files may not operate due Picture play mode. to a different recording format or Touch S or T from the picture Browse Music the condition of the file. screen. 1. Touch Browse Music. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Infotainment System 203 Rotating a Picture Possible auxiliary audio sources AUX Menu include: Touch w from the picture screen. Press the MENU knob to display the . Laptop computer AUX menu and the following may Enlarging a Picture . Audio music player display: Touch x from the picture screen. This jack is not an audio output. Do Tone Settings : Select to adjust Bass, Midrange, Treble, Balance, Using the USB Picture Menu not plug headphones into the auxiliary input jack. Auxiliary Fade, and EQ (Equalizer). See 1. Touch MENU from the picture “Tone Settings” in AM-FM Radio devices should be set up while the 0 screen. vehicle is in P (Park). 190. 2. Touch the appropriate menu: Connect a 3.5 mm (1/8 in) cable Auto Volume : If equipped, see “Playing an Audio CD.” . Slide Show Time: Allows from the auxiliary device to the selection of the slide show auxiliary input jack. DSP : If equipped, this feature interval. If an auxiliary device has already adjusts the pre-defined settings. See “DSP” in AM-FM Radio 0 190. . Clock, Temp. Display: been connected, but a different Allows selection of On or source is currently active, press the EQ (Equalizer) : If equipped, this Off to show the clock and MEDIA faceplate button repeatedly feature adjusts the pre-defined temperature on the full to scroll through all of the available equalizer settings. See “EQ screen. audio source screens, until the AUX (Equalizer)” in AM-FM Radio 0 190. source screen is shown. . Display Settings: Adjusts Base Radio with Touchscreen for Brightness and Contrast. Base Radio Play will begin when the system has 3. Touch 0 to exit. Playing from the AUX Jack finished reading the information on the device. An auxiliary device is played Auxiliary Jack through the audio system and This vehicle may have an AUX jack controlled through the device itself. in the center console or armrest. See Center Console Storage 0 125. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

204 Infotainment System Playing Music Launch music by touching MEDIA device to start playing. When the To play the music from the device, on the Home Page. vehicle is not moving, use the if the device is already connected: To play music via Bluetooth: phone to begin playback. All devices launch audio differently. 1. Press {. 1. Power on the device, and pair to connect the device. When selecting Bluetooth Audio as 2. Touch AUDIO. a source, the radio may show as 2. Once paired, go into the audio paused on the screen. Press play 3. Touch Source. application from the Home on the device or press r to begin 4. Touch AUX. Page or via the application tray. playback. Select MEDIA until Bluetooth To adjust the tone settings. See displays. Some phones support sending “Audio Settings” in “System Bluetooth music information to Settings” under AM-FM Radio Bluetooth Audio Menu display on the radio. When the radio 0 190. Press the MENU screen button to receives this information, it will display the Bluetooth Audio menu. check to see if any is available and Bluetooth Audio The following may be available: display it. For more information about supported Bluetooth features, If equipped, music may be played Tone: Turn the MENU knob to see www.gm.com/bluetooth for U.S. from a paired Bluetooth device. See adjust the tone settings. and Canada only. “Pairing” under Bluetooth (Overview) 0 211 or Bluetooth Press o BACK to go back to the (Infotainment Controls) 0 213 for previous menu. help pairing a device. Manage Bluetooth Devices: Select Volume and song selection may be to go to the Bluetooth page to add controlled by using the infotainment or delete devices. controls or the phone/device. When selecting Bluetooth Audio, the If Bluetooth Audio is selected and radio may not be able to launch the nothing is heard, check the volume audio player on the connected setting on both the phone/device and the infotainment system. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Infotainment System 205 Voice Recognition In general there are flexible ways to 1. Press g on the steering wheel speak commands for completing the control to activate voice If equipped, voice recognition allows tasks. Most of them, except recognition, or select on the for hands-free operation within the destination entry and voice keypad, g audio and phone applications. This can be completed in a single infotainment screen on the feature can be started by pressing command. If the task takes more center stack. either the g button on the steering than one command to complete, the . If voice recognition is first command would be to indicate wheel or by selecting the on the started from the steering g the kind of task that is to be wheel control, the screen display. performed. The system replies with instrument cluster displays However, not all features within prompts that lead through a dialog the selections and visual these areas are supported by voice to enter the necessary information. dialog content. commands. Generally, only complex Voice recognition can be used when . If voice recognition is tasks that require multiple manual the ignition is on or when Retained started from the interactions to complete are Accessory Power (RAP) is active. infotainment screen, the supported by voice commands. See Retained Accessory Power selections and visual dialog For example, tasks that take more (RAP) 0 260. content are displayed on than one or two button presses such both the center stack as selecting a song or artist to play Using Voice Recognition display and the instrument from a media device would be Voice recognition becomes available cluster display. supported by voice commands. once the system has been 2. The audio system mutes and Other tasks, like adjusting the initialized. This begins when the the system plays a prompt volume or seeking up or down are ignition is turned on. Initialization followed by a beep. audio features that are easily may take a few moments. performed by pressing one or two 3. Wait until after the beep buttons, and are not supported by completes, then clearly speak voice commands. one of the commands described in this section. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

206 Infotainment System Press g to interrupt any voice voice commands, or some . Press i on the steering wheel recognition system prompt. For selections may expedite a session. controls to terminate the voice example, if the prompt seems If a selection is made using a session and display the screen to be taking too long to finish, manual control, the dialog will from which voice recognition progress in the same way as if the press again and the beep was initiated. g selection was made through a voice should happen right away. command. Once the system is able Helpful Hints for Speaking There are two voice prompt modes to complete the task, or the session Commands supported: is terminated, the voice recognition Voice recognition can understand dialog stops. . Long verbal prompts: The longer commands that are either naturally prompts provide more An example of this type of manual stated in sentence form (English information regarding the intervention is pressing on an entry only), or direct commands that state supported actions. of a displayed number list instead of the application and the task. speaking the number associated . Short prompts: The short For languages that do not support with the entry desired. prompts provide simple natural language commands in instructions about what can be Canceling Voice Recognition sentence form, use the direct stated. commands shown as examples on . Press the Home screen button the display screen. If a command is not spoken, the to terminate the voice voice recognition system says a recognition session which was For best results: help prompt. initiated by pressing g on the . Listen for the prompt and wait Prompts and Screen Displays infotainment screen on the for the beep before saying a center stack. command or reply. While a voice recognition session is active, there will be corresponding . Press or say “Cancel” or “Exit” to . Say “Help” or look at the screen buttons on screens displayed. terminate the voice recognition display for commands. Manual interaction in the voice session and display the screen . Voice recognition system prompt recognition session is permitted. from which voice recognition can be interrupted during a Interaction during a voice session was initiated. may be completed entirely using prompt by pressing g again. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Infotainment System 207 For example, if the prompt stated, the system understands that plays the prompt “Make your seems to be taking too long to a phone call is requested and will selection from the list using the finish, or if what is being respond with questions until enough manual controls or press the Back prompted causes a need for an details are gathered. button to try again.” immediate reply, press g again If the phone number has been If manual selection takes more than and wait for the beep. saved with a name and a place, the 15 seconds, the session terminates . Speak the command naturally, direct command should include and prompts that it has timed out. not too fast, not too slow. Use both, for example “Call Dave Smith The screen returns back to the direct commands without a lot of at work.” screen where voice recognition was initiated. extra words. Using Voice Recognition for . Usually Phone and Audio List Options The Back Command commands can be spoken in a When a list is displayed, a voice Say “Back” or press the Back button single command. prompt will ask to confirm or select to go to the previous screen. For example, “Call Dave Smith an option from that list. A selection If in voice recognition, and “Back” is at work,”“Play” followed by the can be made by manually selecting stated all the way through to the artist or song name, or “Tune” the item, or by speaking the line initial screen, then “Back” is stated followed by the radio station number for the item to select. one more time, the voice recognition number. When a screen contains a list, session will cancel. There is no need to memorize options may be available but not Help specific command words. Direct displayed. The list on a voice commands might be more clearly recognition screen functions the Say “Help” on any voice recognition understood by the system. An same as a list on other screens. screen and the help prompt for the example of a direct command would Scrolling can be used to help screen is played. Additionally, a be “Call 555-1212.” Examples of display other entries from the list. pop-up displays a text version of the these direct commands are help prompt. Depending on how Manually scrolling or paging the list displayed on most of the screens voice recognition was initiated, the on a screen during a voice while a voice session is active. Help pop-up will either display on recognition session suspends the If Phone or Phone Commands, is the instrument cluster or the “ ” “ ” current voice recognition event and GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

208 Infotainment System infotainment screen. Press the “Tune to AM” : “Play Artist ” : Dismiss button to make the pop-up Tune to the radio station whose Begin playback of the media go away. frequency is identified in the selection identified in the command. command (like “nine fifty”). Pressing g while the help prompt is “Play Album” : Begin a dialog to playing will terminate the prompt “Tune to FM” : enter a specific album name. Tune to the radio station whose and a beep will be heard. Doing this “Play Album ” : will stop the help prompt so that a frequency is identified in the Begin playback of the identified voice command can be used. command (like “one o one album name in the command. point one”). Voice Recognition for the Play Song : Begin a dialog to Tune to SXM ” : Tune to the SiriusXM (if Select the screen button to equipped) radio station whose “Play Song ” : Begin g playback of the identified song launch audio voice recognition. channel number is identified in the name in the command. If the voice button is pressed in a command. radio screen, the voice commands “Tune to SXM ” : Tune to the SiriusXM (if enter a specific genre. available. equipped) radio station whose “Play Genre ” : channel name is identified in the “Switch to AM” : Switch bands to Begin playback of the media AM and tune to the last AM radio command. selection identified in the command. station. Voice Recognition for Audio “Play Playlist” : Begin a dialog to “Switch to FM” : Switch bands to My Media enter a specific playlist name. FM and tune to the last FM radio If browsing My Media when the “Play Playlist ” : station. voice button is selected, the voice Begin playback of the identified “Switch to SXM” : Switch bands to recognition commands for My Media playlist in the command. SiriusXM (if equipped) and tune to features are available. “Play ” : Play the last SiriusXM channel. “Play Artist” : Begin a dialog to music from a specific device enter a specific Artist name. identified by name. The device GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Infotainment System 209 name is the name displayed on the “Play Podcast ” : Begin playback of the through media content limits are: selected as an audio source. media selection identified in the . Song files including other command. “Play Chapter” : Begin a dialog to individual files of all media types enter a specific name. “Play Video” : Begin a dialog to such as audiobook chapters, enter a specific name. podcast episodes, and videos. “Play Chapter ” : Begin playback of the media “Play Video

210 Infotainment System command “Play Album” must first be Voice Recognition for the “Voice Keypad” : Begins a dialog spoken; the system will then ask for Phone to enter special numbers like the album name. The reply would international numbers. The numbers be to say the name of the album “Call ” : Initiate a can be entered in groups of digits to play. call to an entered contact. The with each group of digits being command may include location if Once the number of songs has repeated back by the system. If the the contact has location numbers group of digits is not correct, the exceeded approximately 8,000, stored. there is no support for accessing the command “Delete” will remove the songs directly through voice “Call At Home,” last group of digits and allow them commands. There will still be “At Work,”“On Mobile,” or “On to be re-entered. Once the entire access to the media content by Other” : Initiate a call to an entered number has been entered, the using commands for playlists, contact and location at home, at command “Call” will start dialing the artists, and genres. work, on mobile device, or on number. another phone. The access commands for playlists, “Voice Mail” : Initiate a call to voice artists, and genres are prohibited “Call ” : Initiate a mail numbers. call to a standard phone number after the number of this type of Voice Recognition for OnStar media exceeds 4,000. seven or 10 digits in length, and also 911, 411, or 611. (If Equipped) The system will provide feedback “Pair Phone” : Begins the “OnStar” : Begin OnStar Voice the first time voice recognition is Recognition. initiated if it has become apparent Bluetooth pairing process. Follow that any of these limits are reached instructions on the radio display. during a device initializing process. “Switch Phone” : Select a different phone for outgoing calls. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Infotainment System 211 Bluetooth Speech Recognition Phone duplicate or rarely used entries. (If Equipped) If possible, program speed dial or other shortcuts. Voice Pass-Thru allows access to Bluetooth (Overview) the speech recognition commands . Review the controls and Instructions for using the cell phone on the cell phone. See your cell operation of the infotainment may differ between infotainment phone manufacturer s user guide to system. ’ systems. The base radio and base see if the cell phone supports this radio with touchscreen instructions . Pair cell phone(s) to the vehicle. feature. are included in this manual. See the The system may not work with Activating this function will start the infotainment manual for instructions all cell phones. See “Pairing” in Bluetooth Speech Recognition on a on the uplevel radios. this section. connected phone. Bluetooth-capable systems can . If the cell phone has voice The steering wheel controls are interact with many cell phones, dialing capability, learn to use used to operate this function. allowing: that feature to access the address book or contact list. Press and hold to activate. . Placement and receipt of calls in g . See Deleting a Bluetooth A voice session begins so that voice a hands-free mode. “ ® Device” in this section. commands can be given to Siri or . Sharing of the cell phone’s many other controls provided by the address book or contact list with cell phone. the vehicle. { Warning Press @ to exit or press i to To minimize driver distraction, When using a cell phone, it can close and return to the previous before driving, and with the vehicle be distracting to look too long or application prior to the start of Voice parked: too often at the screen of the Pass-Thru. . Become familiar with the phone or the infotainment system. features of the cell phone. Taking your eyes off the road too Organize the phone book and long or too often could cause a contact lists clearly and delete crash resulting in injury or death. Focus your attention on driving. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

212 Infotainment System Vehicles with a Bluetooth system i : Press to end a call, reject a Noise : The system may not can use a Bluetooth-capable cell call, or cancel an operation. Press recognize voice commands if there phone with a Hands-Free Profile to to mute or unmute the infotainment is too much background noise, such make and receive phone calls. The system. as noise from open windows or loud infotainment system and voice talking inside the vehicle. Infotainment System Controls recognition are used to control the When to Speak : A tone sounds to system. The system can be used For information about how to indicate that the system is ready for with the ignition on or in ACC/ navigate the menu system using the a voice command. Wait for the tone ACCESSORY. The range of the infotainment controls, see Overview and then speak. Bluetooth system can be up to 9.1 m 0 188. (30 ft). Not all phones support all How to Speak : Speak clearly in a functions and not all phones work MENU : Turn to scroll through a list. calm and natural voice. Press to select the highlighted list with the Bluetooth system. For U.S. Audio System and Canada only, see www.gm.com/ option. bluetooth for more information about { : Press to go to the Home Page. When using the Bluetooth system, compatible phones. See Home Page 0 189. sound comes through the vehicle's front audio system speakers and Bluetooth Controls PHONE or # : Select to enter the overrides the audio system. Use the Use the buttons on the center stack, phone main menu. See Bluetooth O knob during a call to change the 0 infotainment display, and the (Overview) 211 or Bluetooth volume level. The system maintains 0 steering wheel to operate the (Infotainment Controls) 213. a minimum volume level. Bluetooth system. Voice Recognition Bluetooth Audio Quality Steering Wheel Controls If equipped, the voice recognition Turn off the Echo and Noise g : Press to answer incoming calls, system uses commands to control cancellation feature on your phone, confirm system information, and the system and dial phone numbers. if supported, for the best hands-free start voice recognition. performance. See www.gm.com/bluetooth for U.S. and Canada only. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Infotainment System 213 Bluetooth (Infotainment . The pairing process is disabled Pairing a Phone - SSP and No Controls) when the vehicle is moving. Paired Device . Pairing only needs to be When there is no paired device on To use infotainment controls to completed once, unless the the infotainment system and Simple access the menu system, see 0 pairing information on the cell Secure Pairing (SSP) is supported: Overview 188. phone changes or the cell phone 1. Press {. Pairing is deleted from the system. A Bluetooth-enabled cell phone . Only one paired cell phone can 2. Touch PHONE, press # on the must be paired to the Bluetooth be connected to the Bluetooth center stack, or press g on the system and then connected to the system at a time. steering wheel without OnStar. vehicle before it can be used. See . If multiple paired cell phones are 3. Touch Search Device. your cell phone manufacturer's user within range of the system, the guide for Bluetooth functions before system connects to the first 4. Touch the desired device to pairing the cell phone. If a Bluetooth available paired cell phone in the pair on the searched list phone is not connected, calls will be order that they were first paired screen. made using OnStar Hands-Free to the system. 5. Touch Yes on the pop-up Calling, if available. See OnStar screen of the Bluetooth device Overview 0 479. When the Bluetooth device and infotainment system are and infotainment system. Pairing Information successfully paired, the phone book 6. When the Bluetooth device and . A Bluetooth phone with MP3 is downloaded automatically. This is infotainment system are capability cannot be paired to dependent on the type of the phone successfully paired, the phone the vehicle as a phone and an paired. If the automatic download screen is displayed on the MP3 player at the same time. does not occur, proceed with the infotainment system. phone book download on the . Up to 10 cell phones can be phone. paired to the Bluetooth system. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

214 Infotainment System Pairing a Phone - SSP and Paired . The connected phone is 5. Input the Personal Device highlighted by 5. Identification Number (PIN) When a paired device is on the code (default: 1234) to the Z / 5 indicates the hands-free infotainment system and SSP is . Bluetooth device. When the supported: and phone music functions are Bluetooth device and enabled. infotainment system are 1. Press {. successfully paired, the . 5 indicates only the hands-free PHONE screen is displayed on 2. Touch Settings. function is enabled. the infotainment system. 3. Touch Bluetooth, then Device . Z indicates only Bluetooth When the connection fails, a failure Management. music is enabled. message is displayed on the 4. Touch the desired device to infotainment system. pair. When the Bluetooth Pairing a Phone - No SSP and No Paired Device If a Bluetooth device was previously device and infotainment system connected, the infotainment system are successfully paired, Z / 5 When there is no paired device on executes the auto connection. is displayed on the pair device the infotainment system and SSP is However, if the Bluetooth setting on screen. If no desired device is not supported: the Bluetooth device is turned off, a available go to Step 5. 1. Press {. failure message is displayed on the 5. Touch Search Device to search infotainment system. 2. Touch PHONE, press # on the for the desired device. Pairing a Phone - No SSP and 6. Touch the desired device to center stack, or press g on the Paired Device steering wheel without OnStar. pair on the searched list When a paired device is on the screen. 3. Touch Search Device. infotainment system and SSP is not 7. Touch Yes on the pop-up 4. Touch the desired device to supported: screen of the Bluetooth device pair on the searched list 1. Press {. and infotainment system. screen. 2. Touch Settings. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Infotainment System 215 3. Touch Bluetooth, then Device . Z / 5 indicates the hands-free Disconnecting a Bluetooth Device Management. and phone music functions are 1. Press {. 4. Touch the desired device to enabled. pair. When the Bluetooth 2. Touch Settings. . 5 indicates only the hands-free device and infotainment system function is enabled. 3. Touch Bluetooth, then Device are successfully paired, Z / 5 Management. is displayed on the pair device . Z indicates only Bluetooth 4. Touch the name of the device screen. If no desired device is music is enabled. to be disconnected. available go to Step 5. Connecting a Paired Bluetooth 5. Touch Disconnect. 5. Touch Search Device to search Device for the desired device. Deleting a Bluetooth Device 1. Press {. 6. Touch the desired device to 1. Press {. pair on the searched list 2. Touch Settings. 2. Touch Settings. screen. 3. Touch Bluetooth, then Device 7. Input the Personal Management. 3. Touch Bluetooth, then Device Management. Identification Number (PIN) 4. Touch the device to be code (default: 1234) to the connected. 4. Touch the device to delete. Bluetooth device. When the Y Bluetooth device and Checking the Bluetooth 5. Touch . infotainment system are Connection 6. Touch Delete. successfully paired, Z / 5 is 1. Press {. Bluetooth Music displayed on the pair device screen. 2. Touch Settings. Before playing Bluetooth music, read the following information. . The connected phone is 3. Touch Bluetooth, then Device Management. highlighted by 5. . A cell phone or Bluetooth device 4. The paired device will show. that supports Advanced Audio Distribution Profile (A2DP) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

216 Infotainment System versions over 1.2 must be music function. For example, Returning to the Beginning of the registered and connected to the if you convert to Bluetooth Current Song product. hands-free while playing Phone music, the music is Touch g after two seconds of . From the cell phone or Bluetooth playback time. device, find the Bluetooth device discontinued. Playing music from type to set/connect the item as a the vehicle is not possible when Search stereo headset. there are no music files stored in the cell phone. Touch and hold g or l to rewind . e will appear on the screen if or fast forward. Playing Bluetooth Music the stereo headset is Playing Music Randomly successfully connected. 1. Press {. Touch Z during playback. Touch . The sound played by the 2. Touch AUDIO. Bluetooth device is delivered again to return to normal play. 3. Touch Source. through the infotainment system. This function may not be supported 4. Touch Bluetooth. . Bluetooth music can be played depending on the Bluetooth device. only when a Bluetooth device Pause Do not change the track too quickly has been connected. To play when playing Bluetooth music. Bluetooth music, connect the Touch j to pause. Bluetooth phone to the Conditions that may occur when Touch to resume. infotainment system. r playing Bluetooth music: . If the Bluetooth device is Playing the Next Song . It takes time to transmit data from the Bluetooth device to the disconnected while playing Touch l. phone music, the music is infotainment system. discontinued. The audio Playing the Previous Song . If the cell phone or Bluetooth streaming function may not be device is not in the waiting supported in some Bluetooth Touch g within two seconds of screen mode, it may not phones. Only one function can playback time to play the automatically play. be used at a time between the previous song. Bluetooth hands-free or Phone GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Infotainment System 217 . The infotainment system PROJECTION will appear on the . Select Disable to remove transmits the order to play from Home Page of the infotainment Apple CarPlay and Android the Bluetooth device in the display. Auto capability from the Bluetooth music play mode. To use Android Auto or Apple vehicle Settings menu. If this is done in a different CarPlay: Other functions may mode, then the device transmits still work. the order to stop. Depending on 1. Download the Android Auto app to your phone from the PROJECTION on the Home Page the Bluetooth device options, will change to Android Auto or Apple this order to play/stop may take Google Play store. No app is required for Apple CarPlay. CarPlay depending on the phone. time to activate. Android Auto and/or Apple CarPlay . If the Bluetooth music playback 2. Connect an Android phone or may automatically launch upon USB is not functioning, then check to iPhone by using the compatible connection. If not, touch the see if the Bluetooth device is in phone USB cable and plugging ANDROID AUTO and/or APPLE the waiting screen mode. into a USB data port. For best CARPLAY icon on the Home Page performance, use the device’s to launch. . Sounds may be cut off during factory-provided USB cable. the Bluetooth music playback. Aftermarket or third-party Press { on the center stack to . The infotainment system outputs cables may not work. return to the Home Page. the audio from the cell phone or 3. When the phone is first For further information on how to set Bluetooth device as it is connected to activate Apple up Android Auto and Apple CarPlay transmitted. CarPlay or Android Auto, the in the vehicle, see my.gmc.com or message “Device Projection see Customer Assistance Offices Apple CarPlay and Privacy Consent” will appear. 0 467. Android Auto . Select Continue to launch If equipped, Android Auto and/or Apple CarPlay or Apple CarPlay capability may be Android Auto. available through a compatible smartphone. If available, GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

218 Infotainment System Android Auto is provided by Trademarks and shuffle, and iPod touch are Google and is subject to Google’s trademarks of Apple Inc., registered terms and privacy policy. Apple License Agreements in the U.S. and other countries. CarPlay is provided by Apple and is FCC Information subject to Apple’s terms and privacy policy. Data plan rates apply. See Radio Frequency Statement For Android Auto support see 0 475. https://support.google.com/ androidauto. For Apple CarPlay support see www.apple.com/ios/ carplay/. Apple or Google may change or suspend availability at Fees and Taxes: Subscription fee, any time. Android Auto, Android, taxes, one time activation fee, and Google, Google Play, and other other fees may apply. Subscription marks are trademarks of Google fee is consumer only. All fees and Inc.; Apple CarPlay is a trademark "Made for iPod" and "Made for programming subject to change. of Apple Inc. iPhone" mean that an electronic Subscriptions subject to Customer accessory has been designed to Agreement available at connect specifically to iPod or www.siriusxm.com. SiriusXM iPhone and has been certified by service only available in the the developer to meet Apple 48 contiguous United States and performance standards. Apple is not Canada. responsible for the operation of this In Canada: Some deterioration of device or its compliance with safety service may occur in extreme and regulatory standards. Please northern latitudes. This is beyond note that the use of this accessory the control of SiriusXM Satellite with iPod or iPhone may affect Radio. wireless performance. iPhone, iPod, iPod classic, iPod nano, iPod GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Infotainment System 219 Explicit Language Notice: Channels General Requirements: Schedule I: Gracenote EULA with frequent explicit language are 1. A License Agreement from indicated with an “XL” preceding the SiriusXM is required for any channel name. Channel blocking is product that incorporates available for SiriusXM Satellite SiriusXM Technology and/or for Radio receivers by notifying use of any of the SiriusXM SiriusXM: marks to be manufactured, . USA Customers — See distributed, or marketed in the www.siriusxm.com or call SiriusXM Service Area. Music recognition technology and 1-888-601-6296. 2. For products to be distributed, related data are provided by . Canadian Customers — See marketed, and/or sold in Gracenote. Gracenote is the www.siriusxm.ca or call Canada, a separate agreement industry standard in music 1-877-438-9677. is required with Canadian recognition technology and related content delivery. For more It is prohibited to copy, decompile, Satellite Radio Inc. (operating information visit disassemble, reverse engineer, as SiriusXM Canada). www.gracenote.com. hack, manipulate, or otherwise Other Information make available any technology or Music-related data from Gracenote, software incorporated in receivers The Bluetooth word mark and logos Inc., copyright 2000 to present compatible with the SiriusXM are owned by the Bluetooth SIG, Gracenote. Gracenote Software, Satellite Radio System or that Inc. and any use of such marks by copyright 2000 to present support the SiriusXM website, the General Motors is under license. Gracenote. One or more patents Online Service or any of its content. Other trademarks and trade names owned by Gracenote may apply to Furthermore, the AMBER voice are those of their respective owners. this product and service. See the compression software included in Gracenote website for a this product is protected by non-exhaustive list of applicable intellectual property rights including Gracenote patents. Gracenote, patent rights, copyrights, and trade CDDB, MusicID, MediaVOCS, the secrets of Digital Voice Gracenote logo and logotype, and Systems, Inc. the "Powered by Gracenote" logo GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

220 Infotainment System are either registered trademarks or all of the benefits and protections Servers, including all ownership trademarks of Gracenote in the set forth herein that are available to rights. Under no circumstances will United States and/or other Gracenote. Gracenote become liable for any countries. You agree that you will use payment to you for any information that you provide. You agree that Gracenote Terms of Use Gracenote Data, the Gracenote Software, and Gracenote Servers Gracenote may enforce its rights This application or device contains for your own personal under this Agreement against you software from Gracenote, Inc. of non-commercial use only. You agree directly in its own name. Emeryville, California ("Gracenote"). not to assign, copy, transfer or The Gracenote service uses a The software from Gracenote (the transmit the Gracenote Software or unique identifier to track queries for "Gracenote Software") enables this any Gracenote Data to any third statistical purposes. The purpose of application to do disc or file party. YOU AGREE NOT TO USE a randomly assigned numeric identification and obtain OR EXPLOIT GRACENOTE DATA, identifier is to allow the Gracenote music-related information, including THE GRACENOTE SOFTWARE, service to count queries without name, artist, track, and title OR GRACENOTE SERVERS, knowing anything about who you information ("Gracenote Data") from EXCEPT AS EXPRESSLY are. For more information, see the online servers or embedded PERMITTED HEREIN. web page for the Gracenote Privacy databases (collectively, "Gracenote Policy for the Gracenote service. Servers") and to perform other You agree that your non-exclusive functions. You may use Gracenote license to use the Gracenote Data, The Gracenote Software and each Data only by means of the intended the Gracenote Software, and item of Gracenote Data are licensed End-User functions of this Gracenote Servers will terminate if to you "AS IS." Gracenote makes no application or device. you violate these restrictions. If your representations or warranties, license terminates, you agree to express or implied, regarding the This application or device may cease any and all use of the accuracy of any Gracenote Data. contain content belonging to Gracenote Data, the Gracenote Gracenote reserves the right to Gracenote’s providers. If so, all of Software, and Gracenote Servers. delete data from the Gracenote the restrictions set forth herein with Gracenote reserves all rights in Servers or to change data respect to Gracenote Data shall Gracenote Data, the Gracenote categories for any cause that also apply to such content and such Software, and the Gracenote Gracenote deems sufficient. No content providers shall be entitled to GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Infotainment System 221 warranty is made that the Gracenote INCIDENTAL DAMAGES OR FOR at the center stack display. Further Software or Gracenote Servers are ANY LOST PROFITS OR LOST information concerning the OSS error-free or that functioning of REVENUES. licenses is shown in the center Gracenote Software or Gracenote Copyright 2013. Gracenote, Inc. All stack display. Servers will be uninterrupted. Rights Reserved. Gracenote is not obligated to QNX provide you with new enhanced or Unicode Portions of this software are additional data types or categories Copyright 1991-2013 Unicode, Inc. copyright 2008-2013, QNX Software that Gracenote may provide in the All rights reserved. Distributed Systems. All rights reserved. future and is free to discontinue its under the Terms of Use in Part C – EULA services at any time. http://www.unicode.org/ Copyright 2013, Software Systems GRACENOTE DISCLAIMS ALL copyright.html. GmbH & Co. KG. All Rights WARRANTIES EXPRESS OR Reserved. IMPLIED, INCLUDING, BUT NOT Free Type Project LIMITED TO, IMPLIED Portions of this software are The product you have purchased WARRANTIES OF copyright 2013 The FreeType ("Product") contains Software MERCHANTABILITY, FITNESS Project (http://www.freetype.org). All (Runtime Configuration No. 505962; FOR A PARTICULAR PURPOSE, rights reserved. "Software") which is distributed by TITLE, AND NON-INFRINGEMENT. or on behalf of the Product iType GRACENOTE DOES NOT manufacturer "Manufacturer") under WARRANT THE RESULTS THAT iType is a trademark of Monotype license from Software Systems Co. WILL BE OBTAINED BY YOUR Imaging Inc. registered in the U.S. ("QSSC"). You may only use the USE OF THE GRACENOTE Patent & Trademark Office and may Software in the Product and in SOFTWARE OR ANY be registered in certain other compliance with the license terms GRACENOTE SERVER. IN NO jurisdictions. below. CASE WILL GRACENOTE BE Open Source SW Subject to the terms and conditions LIABLE FOR ANY of this License, QSSC hereby The open source code used in this CONSEQUENTIAL OR grants you a limited, non-exclusive, device can be downloaded at the non-transferable license to use the webpage shown in the information GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

222 Infotainment System Software in the Product for the EXCEPT TO THE EXTENT EXCEPT TO THE EXTENT purpose intended by the OTHERWISE REQUIRED BY OTHERWISE REQUIRED BY Manufacturer. If permitted by the APPLICABLE LAW, QSSC AND ITS APPLICABLE LAW (SUCH AS IN Manufacturer, or by applicable law, LICENSORS PROVIDE THE THE CASE OF DELIBERATE OR you may make one backup copy of SOFTWARE ON AN "AS IS" BASIS, GROSSLY NEGLIGENT ACTS), IN the Software as part of the Product WITHOUT WARRANTIES OR NO EVENT SHALL QSSC, ITS software. QSSC and its licensors CONDITIONS OF ANY KIND, AFFILIATES OR THEIR reserve all license+C31 rights not EITHER EXPRESS OR IMPLIED LICENSORS BE LIABLE TO YOU expressly granted herein, and retain INCLUDING, WITHOUT UNDER ANY LEGAL THEORY, all right, title and interest in and to LIMITATION, ANY WARRANTIES WHETHER IN TORT (INCLUDING all copies of the Software, including OR CONDITIONS OF TITLE, NEGLIGENCE), CONTRACT OR all intellectual property rights NON-INFRINGEMENT, OTHERWISE, FOR DAMAGES, therein. Unless required by MERCHANTABILITY OR FITNESS INCLUDING ANY DIRECT, applicable law you may not FOR A PARTICULAR PURPOSE. INDIRECT, SPECIAL, INCIDENTAL, reproduce, distribute or transfer, ANY WARRANTIES OR OTHER OR CONSEQUENTIAL DAMAGES or de-compile, disassemble or PROVISIONS OFFERED BY THE OF ANY CHARACTER ARISING AS otherwise attempt to unbundle, MANUFACTURER OR ITS A RESULT OF THIS LICENSE OR reverse engineer, modify or create DISTRIBUTOR(S) THAT DIFFER OUT OF THE USE OR INABILITY derivative works of, the Software. FROM THIS LICENSE ARE TO USE THE PRODUCT You agree: (1) not to remove, cover OFFERED BY THE (INCLUDING BUT NOT LIMITED or alter any proprietary notices, MANUFACTURER OR ITS TO DAMAGES FOR LOSS OF labels or marks in or on the DISTRIBUTOR(S) ALONE AND GOODWILL, WORK STOPPAGE, Software, and to ensure that all NOT BY QSSC, ITS AFFILIATES PRODUCT FAILURE OR copies bear any notice contained on OR THEIR LICENSORS. YOU MALFUNCTION, OR ANY AND ALL the original; and (2) not to export the ASSUME ANY RISKS OTHER COMMERCIAL DAMAGES Product or the Software in ASSOCIATED WITH YOUR USE OR LOSSES), EVEN IF QSSC, ITS contravention of applicable export OF THE SOFTWARE UNDER THIS AFFILIATES OR THEIR control laws. LICENSE. LICENSORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Infotainment System 223 WMA This product is protected by certain intellectual property rights of Microsoft. Use or distribution of such technology outside of this product is prohibited without a license from Microsoft. For more information on the Software, including any open source software license terms (and available source code) as well as copyright attributions applicable to the Runtime Configuration indicated above, please contact the Manufacturer or contact QSSC at 175 Terence Matthews Crescent, Kanata, Ontario, Canada K2M 1W8 ([email protected]). END USER NOTICE The marks of companies displayed by this product to indicate business locations are the marks of their respective owners. The use of such marks in this product does not imply any sponsorship, approval, or endorsement by such companies of this product. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

224 Climate Controls Climate Controls Climate Control Systems

Climate Control Systems Climate Control Systems (with Heater Only) Climate Control Systems (with With this system, the heating and ventilation can be controlled. Heater Only) ...... 224 Climate Control Systems (with Air Conditioning) ...... 226 Dual Automatic Climate Control System ...... 228 Air Vents Air Vents ...... 231 Maintenance Passenger Compartment Air Filter ...... 232 Service ...... 233

1. Fan Control TEMP : Turn clockwise or 2. Air Recirculation counterclockwise to increase or decrease the temperature inside the 3. Air Delivery Mode Controls vehicle. 4. Defrost 5. TEMP (Temperature Control) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Climate Controls 225 9 : Turn clockwise or [ : Air is directed to the floor Do not drive the vehicle until all the counterclockwise to increase or outlets, with some air directed to the windows are clear. decrease the fan speed. Turn the windshield, side window, and See Air Vents 0 231. knob all the way counterclockwise second row floor outlets. to turn the fan off. @ : Press to turn on recirculation. - : This mode clears the windows An indicator light comes on. Air is Air Delivery Mode Controls : of fog or moisture. Air is directed to recirculated to quickly cool the Press Y, \, [ , or - to change the windshield, floor outlets, and inside of the vehicle. It can also be the direction of the airflow. An side window vents. used to help reduce outside air and indicator light comes on in the 0 : Press to clear the windshield odors that enter the vehicle. selected mode button. of fog or frost more quickly. Air is Y : Air is directed to the instrument directed to the windshield and the panel outlets. side window vents. The system automatically forces outside air into \ : Air is divided between the the vehicle. instrument panel and floor outlets. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

226 Climate Controls Climate Control Systems (with Air Conditioning) TEMP : Turn clockwise or counterclockwise to increase or With this system the heating, cooling, and ventilation can be controlled. decrease the temperature inside the vehicle. 9 : Turn clockwise or counterclockwise to increase or decrease the fan speed. Turn the knob all the way counterclockwise to turn the fan off. Air Delivery Mode Controls : Press Y, \, [ , or - to change the direction of the airflow. An indicator light comes on in the selected mode button. Y : Air is directed to the instrument panel outlets. 1. Fan Control 6. K (Rear Window Defogger, If \ : Air is divided between the 2. A/C (Air Conditioning) Equipped) instrument panel and floor outlets. 3. Air Delivery Mode Controls f (Outside Heated Mirror, If [ : Air is directed to the floor 4. Defrost Equipped) outlets, with some air directed to the 5. TEMP (Temperature Control) 8 (Outside Air, If Equipped) windshield and side window outlets. 7. @ Air Recirculation GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Climate Controls 227 - : This mode clears the windows 8 : If equipped, press to turn the The rear window defogger only of fog or moisture. Air is directed to outside air mode on. An indicator works when the ignition is on. The the windshield, floor outlets, and light on the button comes on to defogger turns off if the ignition is side window vents. show that outside air is on. When turned to ACC/ACCESSORY or off. 0 : Press to clear the windshield selected, air from outside the If equipped with heated outside of fog or frost more quickly. Air is vehicle circulates throughout the mirrors, they turn on when the rear directed to the windshield and the vehicle. The recirculation mode window defogger button is on. They side window vents. The system cannot be used with the outside help to clear fog or frost from the automatically forces outside air into air mode. surface of the mirrors. the vehicle and the air conditioning A/C : Press to turn the air compressor will run, unless the conditioning system on or off. An Caution outside temperature is close to indicator light comes on to show freezing. that the air conditioning is enabled. Using a razor blade or sharp object to clear the inside rear Do not drive the vehicle until all the If the fan is turned off, the air windows are clear. conditioner will not run. The A/C window can damage the rear light will stay on even if the outside window defogger. Repairs would See Air Vents 0 231. temperatures are below freezing. not be covered by the vehicle @ : Press to turn on recirculation. Rear Window Defogger warranty. Do not clear the inside An indicator light comes on. Air is rear window with sharp objects. recirculated to quickly cool the K : If equipped, press to turn the inside of the vehicle. It can also be rear window defogger on or off. An used to help reduce outside air and indicator light on the button comes odors that enter the vehicle. on to show that the rear window defogger is on. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

228 Climate Controls Dual Automatic Climate Control System Automatic Operation The system automatically controls With this system the heating, cooling, and ventilation in the vehicle can be the fan speed, air delivery, air controlled. conditioning, and recirculation in For an eAssist vehicle, see the Silverado/Sierra eAssist supplement. order to heat or cool the vehicle to the desired temperature. When the indicator light is on, the system is in full automatic operation. If the air delivery mode or fan setting is manually adjusted, the auto indicator turns off and displays will show the selected settings. To place the system in automatic mode: 1. Press AUTO. 2. Set the driver and passenger temperature. 1. Driver Temperature Control 7. SYNC (Synchronized To find your comfort setting, start with 22 °C (72 °F) and 2. A/C (Air Conditioning) Temperature) allow the system time to 8. Rear Window Defogger 3. Air Delivery Mode Controls stabilize. Then adjust the 4. Fan Control 9. Power Button temperature as needed for best comfort. 5. Defrost 10. Air Recirculation 11. AUTO (Automatic Operation) To improve fuel efficiency and to 6. Passenger Temperature cool the vehicle faster, recirculation Control may be automatically selected in warm weather. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Climate Controls 229 The recirculation light will not come Driver and Passenger Changing the mode cancels the on when automatically controlled. Temperature Control : The automatic operation and the system Press @ to manually select temperature can be adjusted goes into manual mode. Press recirculation; press it again to select separately for the driver and AUTO to return to automatic outside air. passenger. operation. Do not cover the solar sensor on the Turn the knob clockwise or Y : Air is directed to the instrument top of the instrument panel near the counterclockwise to increase or panel outlets. windshield. This sensor regulates decrease the driver or passenger \ : Air is divided between the air temperature based on sun load. temperature setting. instrument panel and floor outlets. See “Sensors” later in this section. SYNC : Press to link the passenger Some air is directed toward the Manual Operation temperature setting to the driver windshield and side window outlets. setting. The SYNC indicator light will [ : Air is directed to the floor O : Press to turn the climate control turn on. When the passenger setting outlets, with some to the windshield, system on or off. Outside air still is adjusted, the SYNC indicator light side window outlets, and second enters the vehicle, and is directed to is off. row floor outlets. the floor. This direction can be The driver side or passenger side changed by pressing the air : This mode clears the windows temperature display shows the - delivery mode. of fog or moisture. Air is directed to temperature setting increasing or the windshield, floor outlets, and : Turn clockwise or 9 decreasing. side window vents. The system counterclockwise to increase or Air Delivery Mode Control : automatically forces outside air into decrease the fan speed. Press the the vehicle and the air conditioning knob to turn the fan off. Press Y, \, [ , or - to change the direction of the airflow. An compressor will run, unless the Press AUTO to return to automatic indicator light comes on in the outside temperature is close to operation. selected mode button. freezing. 0 : Press to clear the windshield of fog or frost more quickly. Air is directed to the windshield and the side window vents. The air GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

230 Climate Controls conditioning compressor also comes K : Press to turn the rear window Sensors on, unless the outside temperature defogger on or off. An indicator light is below freezing. on the button comes on to show that Do not drive the vehicle until all the rear window defogger is on. windows are clear. The rear window defogger only See Air Vents 0 231. works when the ignition is in ON/ RUN. The defogger turns off if the A/C : Press to turn the air ignition is turned to ACC/ conditioning system on or off. An ACCESSORY or LOCK/OFF. indicator light comes on to show that the air conditioning is enabled. If the fan is turned off, the air Caution The solar sensor, located in the conditioner will not run. The A/C Using a razor blade or sharp defrost grille in the middle of the light will stay on even if the outside instrument panel, monitors the solar object to clear the inside rear temperatures are below freezing. heat. Do not cover the solar sensor window can damage the rear or the system will not work properly. @ : Press to turn on recirculation. window defogger. Repairs would An indicator light comes on. Air is not be covered by the vehicle There is also an exterior recirculated to quickly cool the warranty. Do not clear the inside temperature sensor behind the front inside of the vehicle. It can also be rear window with sharp objects. grille. This sensor reads the outside used to help reduce outside air and air temperature and helps maintain odors that enter the vehicle. The air the temperature inside the vehicle. conditioning compressor also comes Heated Mirror : If equipped with Any cover on the front of the vehicle on when this mode is activated. heated outside rearview mirrors, including a snow plow, could cause press K to heat the mirrors. See a false reading in the displayed Rear Window Defogger Heated Mirrors 0 50. temperature. The rear window defogger uses a Some vehicles may have the warming grid to remove fog from the exterior temperature sensor in the rear window. passenger side mirror instead of the front grille area. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Climate Controls 231 The climate control system uses the Air Vents Operation Tips information from these sensors to . Clear away any ice, snow, Use the sliding knobs on the center maintain comfort settings by or leaves from air inlets at the and side air vents to direct the adjusting the outlet temperature, fan base of the windshield that could airflow. Use the thumbwheels near speed, and the air delivery mode. block the flow of air into the the air vents to open or close off the The system may also supply cooler vehicle. air to the side of the vehicle facing airflow. . Clear snow off the hood to the sun. The recirculation mode will Air vents blow warm air on the side improve visibility and help also be used as needed to maintain windows in cold weather. If Floor, decrease moisture drawn into cool outlet temperatures. Defog, or Defrost modes are the vehicle. selected, a small amount of air will come from the vents close to the . Keep the path under the front window. If the airflow is shut off seats clear of objects to help using the thumbwheels, warm air circulate the air inside of the will be directed to the other vehicle more effectively. instrument panel vents. This is . Use of non-GM approved hood normal operation. deflectors can adversely affect Use the thumbwheels to turn vent the performance of the system. airflow on or off based on the mode Check with your dealer before selected. adding equipment to the outside of the vehicle. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

232 Climate Controls Maintenance 1. Open the lower glove box door completely. Passenger Compartment 2. Remove the four screws from around the lower glove box. Air Filter The door does not need to be The filter reduces the dust, pollen, removed to access the screws. and other airborne irritants from outside air that is pulled into the vehicle. The filter should be replaced as part of routine scheduled maintenance. 0 See Maintenance Schedule 448. 4. Release the two tabs holding To find out what type of filter to use, the service door. Open the see Maintenance Replacement 0 service door and remove the Parts 458. old filter. 5. Install the new air filter. 6. Close the service door and secure the tabs. 3. Close the lower glove box door and pull it from its frame to 7. Reverse the steps to reinstall remove the entire unit. the glove box. See your dealer if additional assistance is needed. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Climate Controls 233 Service All vehicles have a label underhood that identifies the refrigerant used in the vehicle. The refrigerant system should only be serviced by trained and certified technicians. The air conditioning evaporator should never be repaired or replaced by one from a salvage vehicle. It should only be replaced by a new evaporator to ensure proper and safe operation. During service, all refrigerants should be reclaimed with proper equipment. Venting refrigerants directly to the atmosphere is harmful to the environment and may also create unsafe conditions based on inhalation, combustion, frostbite, or other health-based concerns. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

234 Driving and Operating Retained Accessory Hill Descent Control (HDC) . . . 284 Driving and Power (RAP) ...... 260 Locking Rear Axle ...... 285 Operating Engine Coolant Heater ...... 260 Shifting Into Park ...... 262 Cruise Control Shifting out of Park ...... 263 Cruise Control ...... 285 Driving Information Parking over Things Driver Assistance Systems Distracted Driving ...... 235 That Burn ...... 264 Driver Assistance Systems . . . 288 Defensive Driving ...... 236 Active Fuel Management . . . . . 264 Assistance Systems for Drunk Driving ...... 236 Engine Exhaust Parking or Backing ...... 289 Control of a Vehicle ...... 236 Engine Exhaust ...... 264 Assistance Systems for Braking ...... 236 Running the Vehicle While Driving ...... 292 Steering ...... 237 Parked ...... 265 Forward Collision Alert (FCA) Off-Road Recovery ...... 238 System ...... 292 Loss of Control ...... 238 Automatic Transmission Forward Automatic Off-Road Driving ...... 239 Automatic Transmission ...... 265 Braking (FAB) ...... 294 Driving on Wet Roads ...... 244 Manual Mode ...... 268 Lane Departure Warning Hill and Mountain Roads . . . . . 245 Tow/Haul Mode ...... 271 (LDW) (2500/3500 Winter Driving ...... 245 Series) ...... 295 If the Vehicle Is Stuck ...... 247 Drive Systems Lane Keep Assist (LKA) (1500 Vehicle Load Limits ...... 248 Four-Wheel Drive ...... 272 Series) ...... 297 Truck-Camper Loading Brakes Information ...... 253 Fuel Antilock Brake Fuel ...... 299 Starting and Operating System (ABS) ...... 280 California Fuel New Vehicle Break-In ...... 255 Parking Brake ...... 281 Requirements ...... 300 Adjustable Throttle and Brake Brake Assist ...... 281 Fuels in Foreign Countries . . . 300 Pedal ...... 256 Hill Start Assist (HSA) ...... 282 Fuel Additives ...... 300 Ignition Positions ...... 256 Ride Control Systems E85 or FlexFuel ...... 300 Starting the Engine ...... 258 Traction Control/Electronic Filling the Tank ...... 301 Fast Idle System ...... 259 Stability Control ...... 282 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 235 Filling a Portable Fuel Driving Information . Designate a front seat Container ...... 303 passenger to handle potential distractions. Trailer Towing Distracted Driving General Towing . Become familiar with vehicle Distraction comes in many forms Information ...... 303 features before driving, such as and can take your focus from the Driving Characteristics and programming favorite radio task of driving. Exercise good Towing Tips ...... 303 stations and adjusting climate judgment and do not let other Trailer Towing ...... 307 control and seat settings. Towing Equipment ...... 325 activities divert your attention away Program all trip information into Trailer Sway Control (TSC) . . . 334 from the road. Many local any navigation device prior to governments have enacted laws driving. Conversions and Add-Ons regarding driver distraction. Become Add-On Electrical familiar with the local laws in . Wait until the vehicle is parked Equipment ...... 336 your area. to retrieve items that have fallen to the floor. Adding a Snow Plow or Similar To avoid distracted driving, keep Equipment ...... 337 your eyes on the road, keep your . Stop or park the vehicle to tend Pickup Conversion to hands on the steering wheel, and to children. Chassis Cab ...... 340 focus your attention on driving. . Keep pets in an appropriate . Do not use a phone in carrier or restraint. demanding driving situations. . Avoid stressful conversations Use a hands-free method to while driving, whether with a place or receive necessary passenger or on a cell phone. phone calls. . Watch the road. Do not read, take notes, or look up information on phones or other electronic devices. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

236 Driving and Operating . Allow enough following distance Control of a Vehicle { Warning between you and the driver in front of you. Braking, steering, and accelerating Taking your eyes off the road too are important factors in helping to long or too often could cause a . Focus on the task of driving. control a vehicle while driving. crash resulting in injury or death. Focus your attention on driving. Drunk Driving Braking Death and injury associated with Braking action involves perception Refer to the infotainment section drinking and driving is a global time and reaction time. Deciding to and/ or infotainment manual on tragedy. push the brake pedal is perception using that system and the time. Actually doing it is navigation system, if equipped, { Warning reaction time. including pairing and using a cell Average driver reaction time is phone. Drinking and then driving is very dangerous. Your reflexes, about three-quarters of a second. In that time, a vehicle moving at perceptions, attentiveness, and Defensive Driving 100 km/h (60 mph) travels 20 m judgment can be affected by even Defensive driving means always (66 ft), which could be a lot of “ a small amount of alcohol. You expect the unexpected.” The first distance in an emergency. can have a serious — or even step in driving defensively is to wear Helpful braking tips to keep in mind the seat belt. See Seat Belts 0 69. fatal — collision if you drive after drinking. include: . Assume that other road users . Keep enough distance between (pedestrians, bicyclists, and Do not drink and drive or ride with a driver who has been drinking. you and the vehicle in front other drivers) are going to be of you. careless and make mistakes. Ride home in a cab; or if you are Anticipate what they might do with a group, designate a driver . Avoid needless heavy braking. and be ready. who will not drink. . Keep pace with traffic. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 237 If the engine ever stops while the If the steering wheel is turned until it If power steering assist is lost vehicle is being driven, brake reaches the end of its travel, and is because the engine stops or the normally but do not pump the held in that position for an extended system malfunctions, the vehicle brakes. Doing so could make the period of time, power steering assist can be steered but may require pedal harder to push down. If the may be reduced. increased effort. See your dealer. engine stops, there will be some If the steering assist is used for an (2500/3500 Series – Double Cab/ power brake assist but it will be extended period of time while the used when the brake is applied. Crew Cab with Digital Steer vehicle is not moving, power assist Assist) Once the power assist is used up, it may be reduced. can take longer to stop and the The vehicle has a Digital Steer brake pedal will be harder to push. Normal use of the power steering Assist power steering system that assist should return when the varies the amount of effort required Steering system cools down. to steer the vehicle. Less steering See your dealer if there is a effort is required at slower speeds. Electric Power Steering (1500 problem. At faster speeds, the steering effort Series) increases. The system helps the Hydraulic Power Steering steering wheel return to center at If the vehicle has electric power steering, it does not have power (2500/3500 Series) low speeds. Pressing the Tow/Haul steering fluid. Regular maintenance button adjusts steering effort for (2500/3500 Series – All Regular driving conditions described in Tow/ is not required. Cab, Double Cab/Crew Cab Haul Mode 0 271. If power steering assist is lost due without Digital Steer Assist) The power steering system may to a system malfunction, the vehicle The power steering system may can be steered, but may require require maintenance. See Power require maintenance. See Power Steering Fluid (1500 Series) 0 365 increased effort. See your dealer if 0 Steering Fluid (1500 Series) 365 or Power Steering Fluid (2500/3500 there is a problem. or Power Steering Fluid (2500/3500 Series) 0 365. Series) 0 365. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

238 Driving and Operating If power steering assist is lost Steering in Emergencies The vehicle's right wheels can drop because the engine stops or the off the edge of a road onto the . There are some situations when system malfunctions, the vehicle shoulder while driving. Follow steering around a problem may can be steered but may require these tips: be more effective than braking. increased effort. See your dealer. 1. Ease off the accelerator and . Holding both sides of the then, if there is nothing in the steering wheel allows you to turn Caution way, steer the vehicle so that it 180 degrees without removing straddles the edge of the a hand. If the steering wheel is turned pavement. until it reaches the end of its . Antilock Brake System (ABS) 2. Turn the steering wheel about travel, and is held in that position allows steering while braking. for more than 15 seconds, one-eighth of a turn, until the damage may occur to the power right front tire contacts the Off-Road Recovery pavement edge. steering system and there may be loss of power steering assist. 3. Turn the steering wheel to go straight down the roadway. Curve Tips Loss of Control . Take curves at a reasonable speed. Skidding . Reduce speed before entering a There are three types of skids that curve. correspond to the vehicle's three control systems: . Maintain a reasonable steady speed through the curve. . Braking Skid — wheels are not rolling. . Wait until the vehicle is out of the curve before accelerating . Steering or Cornering Skid — gently into the straightaway. too much speed or steering in a curve causes tires to slip and lose cornering force. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 239 . Acceleration Skid — too much snow on the road to make a throttle causes the driving mirrored surface — and slow { Warning wheels to spin. down when you have any doubt. When driving off-road, bouncing Defensive drivers avoid most skids . Try to avoid sudden steering, and quick changes in direction by taking reasonable care suited to acceleration, or braking, can easily throw you out of existing conditions, and by not including reducing vehicle speed position. This could cause you to overdriving those conditions. But by shifting to a lower gear. Any lose control and crash. You and skids are always possible. sudden changes could cause your passengers should always the tires to slide. If the vehicle starts to slide, follow wear seat belts. these suggestions: Remember: Antilock brakes help avoid only the braking skid. . Ease your foot off the Before Driving Off-Road accelerator pedal and steer the way you want the vehicle to go. Off-Road Driving . Have all necessary maintenance and service work completed. The vehicle may straighten out. Four-wheel-drive vehicles can be Be ready for a second skid if it used for off-road driving. Vehicles . Fuel the vehicle, fill fluid levels, occurs. without four-wheel drive and and check inflation pressure in . Slow down and adjust your vehicles not equipped with All all tires, including the spare, driving according to weather Terrain (AT) or On-Off Road (OOR) if equipped. conditions. Stopping distance tires must not be driven off-road . Read all the information about can be longer and vehicle except on a level, solid surface. For four-wheel-drive vehicles in this control can be affected when contact information about the manual. traction is reduced by water, original equipment tires, see the . Remove any underbody air snow, ice, gravel, or other warranty manual. deflector, if equipped. Re-attach material on the road. Learn to One of the best ways for successful the air deflector after off-road recognize warning clues such — off-road driving is to control the driving. as enough water, ice, or packed speed. . Know the local laws that apply to off-road driving. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

240 Driving and Operating To gain more ground clearance if Environmental Concerns needed, it may be necessary to Warning (Continued) . Always use established trails, remove the front fascia lower air roads, and areas that have been dam, if equipped. However, driving passengers can be struck set aside for public off-road without the air dam reduces fuel by flying objects. Secure the recreational driving and obey all economy. cargo properly. posted regulations. . Keep cargo in the cargo Caution area as far forward and as . Do not damage shrubs, flowers, low as possible. The trees, or grasses or disturb Operating the vehicle for heaviest things should be wildlife. extended periods without the front on the floor, forward of the . Do not park over things that fascia lower air dam installed can rear axle. burn. See Parking over Things cause improper airflow to the . Heavy loads on the roof That Burn 0 264. engine. Reattach the front fascia raise the vehicle's center of air dam after off-road driving. gravity, making it more likely Driving on Hills to roll over. You can be Driving safely on hills requires good Loading the Vehicle for seriously or fatally injured if judgment and an understanding of the vehicle rolls over. Put what the vehicle can and cannot do. Off-Road Driving heavy loads inside the cargo area, not on the roof. { Warning { Warning Many hills are simply too steep . Unsecured cargo on the For more information about loading for any vehicle. Driving up hills load floor can be tossed the vehicle, see Vehicle Load Limits about when driving over 0 248 and Tires 0 389. can cause the vehicle to stall. rough terrain. You or your Driving down hills can cause loss of control. Driving across hills can (Continued) (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 241

Warning (Continued) { Warning Warning (Continued)

cause a rollover. You could be Driving to the top of a hill at high because the N (Neutral) position injured or killed. Do not drive on speed can cause an accident. on the transfer case overrides the steep hills. There could be a drop-off, transmission. You or someone embankment, cliff, or even else could be injured. If leaving Before driving on a hill, assess the another vehicle. You could be the vehicle, set the parking brake steepness, traction, and seriously injured or killed. As you and shift the transmission to obstructions. If the terrain ahead near the top of a hill, slow down P (Park). Shift the transfer case to cannot be seen, get out of the and stay alert. any position but N (Neutral). vehicle and walk the hill before driving further. . Never go downhill forward or . When driving down a hill, keep When driving on hills: backward with either the the vehicle headed straight transmission or transfer case in down. Use a low gear because . Use a low gear and keep a firm N (Neutral). The brakes could the engine will work with the grip on the steering wheel. overheat and you could lose brakes to slow the vehicle and . Maintain a slow speed. control. help keep the vehicle under control. . When possible, drive straight up or down the hill. { Warning { Warning . Slow down when approaching If the vehicle has the two-speed the top of the hill. automatic or electronic transfer Heavy braking when going down . Use headlamps even during the case, shifting the transfer case to a hill can cause your brakes to day to make the vehicle more N (Neutral) can cause your overheat and fade. This could visible. vehicle to roll even if the cause loss of control and you or transmission is in P (Park). This is others could be injured or killed. (Continued) (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

242 Driving and Operating . Never back down a hill in downhill wheels, which could Warning (Continued) N (Neutral) using only the cause a downhill slide or a brake. The vehicle can roll rollover. Apply the brakes lightly when backward quickly and you . Surface conditions can be a descending a hill and use a low could lose control. gear to keep vehicle speed under problem. Loose gravel, muddy control. . If driving downhill when the spots, or even wet grass can vehicle stalls, shift to a cause the tires to slip sideways, lower gear, release the downhill. If the vehicle slips If the vehicle stalls on a hill: parking brake, and drive sideways, it can hit something 1. Apply the brakes to stop the straight down the hill. that will trip it — a rock, a rut, vehicle, and then apply the 3. If the vehicle cannot be etc. — and roll over. parking brake. restarted after stalling, set the . Hidden obstacles can make the 2. Shift into P (Park) and then parking brake, shift into steepness of the incline more restart the engine. P (Park), and turn the severe. If a rock is driven across vehicle off. with the uphill wheels, or if the . If driving uphill when the downhill wheels drop into a rut vehicle stalls, shift to 3.1. Leave the vehicle and seek help. or depression, the vehicle can tilt R (Reverse), release the even more. parking brake, and back 3.2. Stay clear of the path the straight down. vehicle would take if it . If an incline must be driven rolled downhill. across, and the vehicle starts to . Never try to turn the vehicle slide, turn downhill. This should around. If the hill is steep . Avoid turns that take the vehicle help straighten out the vehicle enough to stall the vehicle, across the incline of the hill. and prevent the side slipping. it is steep enough to cause A hill that can be driven straight it to roll over. up or down might be too steep to . If you cannot make it up the drive across. Driving across an hill, back straight down incline puts more weight on the the hill. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 243 Traction is reduced on hard packed { Warning snow and ice and it is easy to lose Warning (Continued) control. Reduce vehicle speed when Getting out of the vehicle on the driving on hard packed snow Traction could be lost, and the downhill side when stopped and ice. vehicle could roll over. Do not across an incline is dangerous. drive through rushing water. If the vehicle rolls over, you could { Warning be crushed or killed. Always get out on the uphill side of the Driving on frozen lakes, ponds, Caution vehicle and stay well clear of the or rivers can be dangerous. Ice rollover path. conditions vary greatly and the Do not drive through standing vehicle could fall through the ice; water if it is deep enough to cover Driving in Mud, Sand, Snow, you and your passengers could the wheel hubs, axles, or exhaust or Ice drown. Drive your vehicle on safe pipe. Deep water can damage the surfaces only. axle and other vehicle parts. Use a low gear when driving in mud — the deeper the mud, the lower the gear. Keep the vehicle moving Driving in Water If the standing water is not too deep, to avoid getting stuck. drive through it slowly. At faster speeds, water can get into the Traction changes when driving on { Warning engine and cause it to stall. Stalling sand. On loose sand, such as on can occur if the exhaust pipe is beaches or sand dunes, the tires Driving through rushing water can under water. Do not turn off the tend to sink into the sand. This be dangerous. Deep water can ignition when driving through water. affects steering, accelerating, and sweep your vehicle downstream If the exhaust pipe is under water, braking. Drive at a reduced speed and you and your passengers the engine will not start. When going and avoid sharp turns or abrupt could drown. If it is only shallow through water, the brakes get wet maneuvers. water, it can still wash away the ground from under your tires. and it may take longer to stop. See “Driving on Wet Roads” later in this (Continued) section. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

244 Driving and Operating After Off-Road Driving Hydroplaning { Warning Remove any brush or debris that Hydroplaning is dangerous. Water has collected on the underbody or Wet brakes can cause crashes. can build up under the vehicle's chassis, or under the hood. These They might not work as well in a tires so they actually ride on the accumulations can be a fire hazard. quick stop and could cause water. This can happen if the road is After operation in mud or sand, pulling to one side. You could wet enough and you are going fast have the brake linings cleaned and lose control of the vehicle. enough. When the vehicle is checked. These substances can hydroplaning, it has little or no After driving through a large contact with the road. cause glazing and uneven braking. puddle of water or a car/vehicle Check the body structure, driveline, wash, lightly apply the brake There is no hard and fast rule about steering, suspension, wheels, tires, hydroplaning. The best advice is to pedal until the brakes work and exhaust system for damage and slow down when the road is wet. normally. check the fuel lines and cooling system for any leakage. Flowing or rushing water creates Other Rainy Weather Tips More frequent maintenance service strong forces. Driving through Besides slowing down, other wet is required. See the Maintenance flowing water could cause the weather driving tips include: Schedule 0 448. vehicle to be carried away. If this . Allow extra following distance. happens, you and other vehicle Driving on Wet Roads occupants could drown. Do not . Pass with caution. ignore police warnings and be . Keep windshield wiping Rain and wet roads can reduce very cautious about trying to drive equipment in good shape. vehicle traction and affect your through flowing water. ability to stop and accelerate. . Keep the windshield washer fluid Always drive slower in these types reservoir filled. of driving conditions and avoid . Have good tires with proper driving through large puddles and tread depth. See Tires 0 389. deep-standing or flowing water. . Turn off cruise control. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 245 Hill and Mountain Roads Winter Driving { Warning Driving on steep hills or through Driving on Snow or Ice mountains is different than driving Coasting downhill in N (Neutral) on flat or rolling terrain. Tips include: or with the ignition off is Snow or ice between the tires and dangerous. This can cause the road creates less traction or . Keep the vehicle serviced and in grip, so drive carefully. Wet ice can good shape. overheating of the brakes and loss of steering assist. Always occur at about 0 °C (32 °F) when freezing rain begins to fall. Avoid . Check all fluid levels and brakes, have the engine running and the driving on wet ice or in freezing rain tires, cooling system, and vehicle in gear. transmission. until roads can be treated. For Slippery Road Driving: . Shift to a lower gear when going . Drive at speeds that keep the down steep or long hills. vehicle in its own lane. Do not . Accelerate gently. Accelerating swing wide or cross the too quickly causes the wheels to { Warning center line. spin and makes the surface under the tires slick. Using the brakes to slow the . Be alert on top of hills; vehicle on a long downhill slope something could be in your lane . Turn on Traction Control. See can cause brake overheating, can (e.g., stalled car, accident). Traction Control/Electronic Stability Control 0 282. reduce brake performance, and . Pay attention to special road could result in a loss of braking. signs (e.g., falling rocks area, . The Antilock Brake System Shift the transmission to a lower winding roads, long grades, (ABS) improves vehicle stability gear to let the engine assist the passing or no-passing zones) during hard stops, but the brakes on a steep downhill slope. and take appropriate action. brakes should be applied sooner than when on dry pavement. See Antilock Brake System (ABS) 0 280. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

246 Driving and Operating . Allow greater following distance and watch for slippery spots. Icy { Warning Warning (Continued) patches can occur on otherwise clear roads in shaded areas. Snow can trap engine exhaust the fan speed to the highest The surface of a curve or an under the vehicle. This may setting. See “Climate overpass can remain icy when cause exhaust gases to get Control Systems.” the surrounding roads are clear. inside. Engine exhaust contains For more information about CO, Avoid sudden steering carbon monoxide (CO), which see Engine Exhaust 0 264. maneuvers and braking while cannot be seen or smelled. It can on ice. cause unconsciousness and even death. To save fuel, run the engine for . Turn off cruise control. short periods to warm the vehicle If the vehicle is stuck in snow: Blizzard Conditions and then shut the engine off and . Clear snow from the base of partially close the window. Moving Stop the vehicle in a safe place and the vehicle, especially any about to keep warm also helps. signal for help. Stay with the vehicle blocking the exhaust pipe. If it takes time for help to arrive, unless there is help nearby. when running the engine, push the If possible, use Roadside . Open a window about 5 cm accelerator pedal slightly so the Assistance. See Roadside (2 in) on the vehicle side engine runs faster than the idle Assistance Program 0 469. To get that is away from the wind, speed. This keeps the battery help and keep everyone in the to bring in fresh air. charged to restart the vehicle and to vehicle safe: . Fully open the air outlets on signal for help with the headlamps. . Turn on the hazard warning or under the instrument Do this as little as possible, to flashers. panel. save fuel. . Tie a red cloth to an outside . Adjust the climate control mirror. system to circulate the air inside the vehicle and set (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 247 If the Vehicle Is Stuck Rocking the Vehicle to Get Recovery Hooks It Out Slowly and cautiously spin the wheels to free the vehicle when Turn the steering wheel left and { Warning stuck in sand, mud, ice, or snow. right to clear the area around the Never pull on recovery hooks See Rocking the Vehicle to Get It front wheels. For four-wheel-drive “ from the side. The hooks could Out” later in this section. vehicles, shift into Four-Wheel Drive High. Turn the TCS off. Shift back break and you and others could The Traction Control System (TCS) and forth between R (Reverse) and be injured. When using recovery can often help to free a stuck a forward gear, spinning the wheels hooks, always pull the vehicle vehicle. See Traction Control/ as little as possible. To prevent from the front. Electronic Stability Control 0 282. transmission wear, wait until the If TCS cannot free the vehicle, see wheels stop spinning before shifting Rocking the Vehicle to Get it Out “ ” gears. Slowly spinning the wheels in following. the forward and reverse directions causes a rocking motion that could { Warning free the vehicle. If that does not get the vehicle out after a few tries, it If the vehicle's tires spin at high might need to be towed out. See speed, they can explode, and you Towing the Vehicle 0 430. Recovery or others could be injured. The hooks can be used, if the vehicle vehicle can overheat, causing an has them. engine compartment fire or other damage. Spin the wheels as little as possible and avoid going above 56 km/h (35 mph).

For information about using tire chains on the vehicle, see Tire Chains 0 413. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

248 Driving and Operating Two labels on the vehicle may Tire and Loading Information Caution show how much weight it was Label Do not drive through standing designed to carry: the Tire and water if it is deep enough to cover Loading Information label and the wheel hubs, axles, or exhaust the Certification/Tire label. pipe. Deep water can damage the axle and other vehicle parts. { Warning Do not load the vehicle any There are recovery hooks at the heavier than the Gross front of the vehicle. Use them if the vehicle is stuck off-road and needs Vehicle Weight Rating to be pulled some place to continue (GVWR), or either the driving. maximum front or rear Gross Axle Weight Rating (GAWR). Label Example Vehicle Load Limits This can cause systems to break and change the way the A vehicle-specific Tire and It is very important to know how vehicle handles. This could Loading Information label is much weight the vehicle can cause loss of control and a attached to the center pillar carry. This weight is called the crash. Overloading can also (B-pillar). The Tire and Loading vehicle capacity weight and reduce stopping distance, Information label shows the includes the weight of all damage the tires, and shorten number of occupant seating occupants, cargo, and all the life of the vehicle. positions (1), and the maximum nonfactory-installed options. vehicle capacity weight (2) in kilograms and pounds. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 249 The Tire and Loading 2. Determine the combined 5. Determine the combined Information label also shows the weight of the driver and weight of luggage and cargo size of the original equipment passengers that will be being loaded on the vehicle. tires (3) and the recommended riding in your vehicle. That weight may not safely cold tire inflation pressures (4). 3. Subtract the combined exceed the available cargo For more information on tires and luggage load capacity 0 weight of the driver and and inflation see Tires 389 passengers from XXX kg or calculated in Step 4. and Tire Pressure 0 397. XXX lbs. 6. If your vehicle will be towing There is also important loading 4. The resulting figure equals a trailer, load from your information on the vehicle the available amount of trailer will be transferred to Certification/Tire label. It may cargo and luggage load your vehicle. Consult this show the Gross Vehicle Weight capacity. For example, if the manual to determine how Rating (GVWR) and the Gross "XXX" amount equals this reduces the available Axle Weight Rating (GAWR) for 1400 lbs. and there will be cargo and luggage load the front and rear axles. See five 150 lb passengers in capacity of your vehicle.” Certification/Tire Label later in “ ” your vehicle, the amount of See Trailer Towing 0 307 for this section. available cargo and luggage important information on towing “Steps for Determining Correct load capacity is 650 lbs. a trailer, towing safety rules, and Load Limit– (1400-750 (5 x 150) = trailering tips. 1. Locate the statement "The 650 lbs.) combined weight of occupants and cargo should never exceed XXX kg or XXX lbs." on your vehicle’s placard. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

250 Driving and Operating

Example 1 Example 2 Example 3

1. Vehicle Capacity Weight for 1. Vehicle Capacity Weight for 1. Vehicle Capacity Weight for Example 1 = (453 kg) Example 2 = 453 kg Example 3 = 453 kg (1,000 lb) (1,000 lb) (1,000 lb) 2. Subtract Occupant Weight 2. Subtract Occupant Weight 2. Subtract Occupant Weight @ 68 kg (150 lb) × 2 = @ 68 kg (150 lb) × 5 = @ 91 kg (200 lb) × 5 = 136 kg (300 lb) 340 kg (750 lb) 453 kg (1,000 lb) 3. Available Occupant and 3. Available Cargo Weight = 3. Available Cargo Weight = Cargo Weight = 317 kg 113 kg (250 lb) 0 kg (0 lb) (700 lb) Refer to the Tire and Loading Information label for specific information about the vehicle's capacity weight and seating positions. The combined weight GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 251 of the driver, passengers, and includes the weight of the cargo should never exceed the vehicle, all occupants, fuel, and { Warning vehicle's capacity weight. cargo. In the case of a sudden stop Certification/Tire Label The Certification/Tire label also or collision, things carried in may show the maximum weights the bed of your truck could for the front and rear axles, shift forward and come into called Gross Axle Weight the passenger area, injuring Rating (GAWR). To determine you and others. If you put the actual loads on the front and things in the bed of your truck, rear axles, weigh the vehicle at you should make sure they a weigh station. Your dealer can are properly secured. help with this. Be sure to spread the load equally on both sides of the centerline. Caution The Certification/Tire label also contains important information Overloading the vehicle may A vehicle-specific Certification/ about the Front Axle Reserve cause damage. Repairs would not Tire label is label is attached to Capacity. See Adding a Snow be covered by the vehicle the center pillar (B-pillar). The Plow or Similar Equipment warranty. Do not overload the vehicle. label may show the size of the 0 337. vehicle's original tires and the inflation pressures needed to Using heavier suspension obtain the gross weight capacity components to get added of the vehicle. This is called durability might not change the Gross Vehicle Weight weight ratings. Ask your dealer Rating (GVWR). The GVWR to help load the vehicle the right way. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

252 Driving and Operating There is also important loading well. The center of gravity height { Warning information for off-road driving in must not extend above the top Things you put inside the this manual. See “Loading the of the pickup box flareboard. vehicle can strike and injure Vehicle for Off-Road Driving“ 0 Any load that extends beyond people in a sudden stop or under Off-Road Driving 239. the vehicle's taillamp area must turn, or in a crash. Two-Tiered Loading be properly marked according to local laws and regulations. . Put things in the cargo Depending on the model of the area of the vehicle. Try to pickup, an upper load platform Remember not to exceed the spread the weight evenly. can be created by positioning Gross Axle Weight . Never stack heavier three or four 5 cm (2 in) by Rating (GAWR) of the front or things, like suitcases, 15 cm (6 in) wooden planks rear axle. inside the vehicle so that across the width of the pickup Add-On Equipment some of them are above box. The planks must be When carrying removable items, the tops of the seats. inserted in the pickup box depressions. a limit on how many people . Do not leave an carried inside the vehicle may unsecured child restraint When using this upper load be necessary. Be sure to weigh in the vehicle. platform, be sure the load is the vehicle before buying and securely tied down to prevent it installing the new equipment. . When you carry from shifting. The load's center something inside the of gravity should be positioned vehicle, secure it in a zone over the rear axle. The whenever you can. zone is located in the area . Do not leave a seat between the front of each wheel folded down unless you well and the rear of each wheel need to. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 253 Loading Points equipment. See www.gmupfitter.com Caution for additional pickup box load bearing structural information. Overloading the vehicle may cause damage. Repairs would not Truck-Camper Loading be covered by the vehicle warranty. Do not overload the Information vehicle. A vehicle-specific Truck-Camper Loading Information label is Remember not to exceed the attached to the inside of the Gross Axle Weight vehicle's glove box. This label Rating (GAWR) of the front or indicates if a slide-in camper rear axle. can be carried, how much of a Maximum load the vehicle can carry, and * Equipment Weight 1. Primary Load Points how to correctly spread out the 2. Secondary Load Areas load. It will help to match the Ladder Rack 340 kg (750 lb) 3. GM Approved Accessory right slide-in camper to the and Cargo Mounting Points vehicle. Cross Toolbox 181 kg (400 lb) Structural members (1) and (2) are Your dealer can help make a and Cargo included in the pickup box design. good vehicle-camper match and Additional accessories should use Side Boxes 113 kg per help determine the Cargo these load points. Depending on the Weight Rating (CWR). and Cargo side (250 lb accessory design, use a spacer per side) under the accessory at the load When installing and loading a points to remove gap. The holes for * The combined weight for all slide-in camper, check the GM approved accessories (3) are manufacturer's instructions. rail-mounted equipment should not intended for aftermarket not exceed 454 kg (1,000 lb). GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

254 Driving and Operating When carrying a slide-in camper, the total cargo load of the vehicle is the weight of the camper plus: . Everything added to the camper after it left the factory. . Everything in the camper. Use the rear edge of the load . All the people inside. floor for measurement purposes. The CWR is the maximum The recommended location for weight of the load the vehicle the cargo center of gravity is at 1. Camper Center of can carry. It does not include the point C for the CWR. It is the Gravity weight of the people inside. But, point where the mass of a body 2. Recommended Center of use about 68 kg (150 lb) for is concentrated and, Gravity Location Zone each seat. if suspended at that point, would balance the front and rear. When the truck is used to carry The total cargo load must not be a slide-in camper, the total cargo more than the vehicle's CWR. Here is an example of proper load of the truck consists of the truck and camper match: Refer to the Truck-Camper manufacturer's camper weight Loading Information label in the figure, the weight of installed glove box for dimensions A and additional camper equipment not B as shown in the following included in the manufacturer's illustration. camper weight figure, the weight of camper cargo, and the weight of passengers in the camper. The total cargo load should not GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 255 exceed the truck's cargo weight and on the rear wheels Starting and rating, and the camper's center separately to determine axle of gravity (1) should fall within loads. Individual axle loads Operating the truck's recommended center should not exceed either of the of gravity zone (2) when gross axle weight ratings New Vehicle Break-In installed. (GAWR). The total axle loads Caution Any accessories or other should not exceed the vehicle's equipment that are added to the gross vehicle weight rating (GVWR). These ratings are The vehicle does not need an vehicle must be weighed. Then, elaborate break-in. But it will given on the Certification/ subtract this extra weight from perform better in the long run if the CWR. This extra weight may Tire label attached to the you follow these guidelines: B-pillar. See “Certification/Tire shorten the center of gravity . Keep the vehicle speed at zone of the vehicle. Label” under Vehicle Load Limits 0 248. If weight ratings 88 km/h (55 mph) or less for If the slide-in camper and its are exceeded, move or remove the first 805 km (500 mi). load weighs less than the CWR, items to bring all weights below . Do not drive at any one the center of gravity zone for the the ratings. constant speed, fast or slow, vehicle may be larger. for the first 805 km (500 mi). See your dealer for more Do not make full-throttle Secure loose items to prevent information on curb weights, starts. Avoid downshifting to weight shifts that could affect the cargo weights, Cargo Weight brake or slow the vehicle. balance of the vehicle. When the Rating, and the correct center of . Avoid making hard stops for truck-camper is loaded, drive to gravity zone. the first 322 km (200 mi) or a scale and weigh on the front so. During this time the new brake linings are not yet broken in. Hard stops with new linings can mean (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

256 Driving and Operating Ignition Positions Caution (Continued) premature wear and earlier replacement. Follow this breaking-in guideline every time you get new brake linings. . Do not tow a trailer during break-in. See Trailer Towing 0 307 for the trailer towing capabilities of the vehicle and more information. The switch used to adjust the Following break-in, engine speed pedals is on the center stack, below and load can be gradually the climate controls. Vehicles with Key Access have an increased. Lift the switch up to move the ignition switch with four different pedals closer to your body. Press positions. Adjustable Throttle and the switch down to move the To shift out of P (Park), the ignition Brake Pedal pedals away. must be in ON/RUN or ACC/ Before you start driving, fully press ACCESSORY and the regular brake If equipped, the position of the the brake pedal to confirm the pedal must be applied. throttle and brake pedals can be adjustment is right for you. changed. 0 (STOPPING THE ENGINE/LOCK/ The vehicle may have a memory OFF) : When the vehicle is stopped, The pedals can only be adjusted function, which lets pedal settings turn the ignition switch to LOCK/ when the vehicle is in P (Park). be saved and recalled. See Memory OFF to turn the engine off. Retained Seats 0 62. Accessory Power (RAP) will remain active. See Retained Accessory Power (RAP) 0 260. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 257 This position locks the ignition and to N (Neutral), firmly apply the steering wheel. It also locks the brakes and steer the vehicle to Caution transmission. The key can be a safe location. removed in LOCK/OFF. Using a tool to force the key to 3. Come to a complete stop. Shift turn in the ignition could cause The steering can bind with the to P (Park). Turn the ignition to damage to the switch or break the wheels turned off center. If this LOCK/OFF. key. Use the correct key, make happens, move the steering wheel 4. Set the parking brake. See sure it is all the way in, and turn it from right to left while turning the Parking Brake 0 281. only with your hand. If the key key to ACC/ACCESSORY. If this cannot be turned by hand, see does not work, then the vehicle The shift lever must be in P (Park) your dealer. needs service. to turn the ignition switch to LOCK/OFF. Do not turn the engine off when the vehicle is moving. This may cause a 1 (ACC/ACCESSORY) : This loss of power assist in the brake { Warning position lets things like the radio and steering systems and disable and the windshield wipers operate Turning off the vehicle while the airbags. while the engine is off. It also moving may cause loss of power unlocks the steering wheel. Use this If the vehicle must be shut off in an assist in the brake and steering position if the vehicle must be emergency: systems and disable the airbags. pushed or towed. 1. Brake using a firm and steady While driving, only shut the 2 (ON/RUN) : This position can be pressure. Do not pump the vehicle off in an emergency. used to operate the electrical brakes repeatedly. This may accessories and to display some deplete power assist, requiring If the vehicle cannot be pulled over, instrument cluster warning and increased brake pedal force. and must be shut off while driving, indicator lights. This position can 2. Shift the vehicle to N (Neutral). turn the ignition to ACC/ also be used for service and This can be done while the ACCESSORY. diagnostics, and to verify the proper vehicle is moving. After shifting operation of the malfunction indicator lamp as may be required for emission inspection purposes. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

258 Driving and Operating The switch stays in this position when the engine is running. The Caution Caution transmission is also unlocked in this position. If you add electrical parts or Do not try to shift to P (Park) if the accessories, you could change vehicle is moving. If you do, you If the key is left in the ACC/ the way the engine operates. Any could damage the transmission. ACCESSORY or ON/RUN position resulting damage would not be Shift to P (Park) only when the with the engine off, the battery could covered by the vehicle warranty. vehicle is stopped. be drained. The vehicle may not See Add-On Electrical Equipment start if the battery is allowed to drain 0 336. for an extended period of time. Starting Procedure 3 (START) : This is the position that 1. Turn the ignition key to START. starts the engine. When the engine When the engine starts, let go starts, release the key. The ignition Caution of the key. The idle speed will switch returns to ON/RUN for go down as the engine gets driving. If the steering wheel is turned warm. Do not race the engine until it reaches the end of its immediately after starting it. A warning tone will sound when the travel, and is held in that position driver door is opened and the Operate the engine and while starting the vehicle, damage transmission gently to allow the ignition is in ACC/ACCESSORY or may occur to the power steering LOCK/OFF, and the key is in the oil to warm up and lubricate all system and there may be loss of ignition. moving parts. power steering assist. When the low fuel warning light Starting the Engine is on and the FUEL LEVEL Move the shift lever to P (Park) or LOW message is displayed in If the vehicle has a diesel engine, N (Neutral). To restart the engine the Driver Information Center see the Duramax diesel when the vehicle is already moving, (DIC), hold the ignition switch supplement. use N (Neutral) only. in the START position to For an eAssist vehicle, see the continue engine cranking. Silverado/Sierra eAssist supplement. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 259 the same thing. This clears the To control the fast idle: Caution extra gasoline from the engine. . To enable the Fast Idle System, Do not race the engine Cranking the engine for long press and release the cruise immediately after starting it. control on/off button and ensure periods of time, by returning the Operate the engine and ignition to the START position that the switch indicator light transmission gently until the oil is lit. immediately after cranking has warms up and lubricates all ended, can overheat and damage moving parts. . Press and release the cruise the cranking motor, and drain the control SET- button. Engine battery. Wait at least 15 seconds Fast Idle System speed will be held at between each try, to let the approximately 1200 rpm. cranking motor cool down. If equipped, this feature is available only with cruise control. The manual One of the following actions will turn fast idle switch is operated using the off the fast idle: 2. If the engine does not start cruise control buttons on the left . Pressing the brake. after five to 10 seconds, side of the steering wheel. especially in very cold weather . Selecting the cruise control (below −18 °C or 0 °F), it could This system can be used to cancel button. increase engine idle speed be flooded with too much . Releasing the parking brake. gasoline. Try pushing the whenever the following conditions . Moving the transmission shift accelerator pedal all the way to are met: lever out of P (Park) or the floor and holding it there . The parking brake is set. N (Neutral). while holding the key in START . The brake pedal is not pressed. for up to 15 seconds. Wait at . Selecting the cruise control on/ least 15 seconds between each . The vehicle must not be moving off button when it was try, to allow the cranking motor and the accelerator must not be previously on. pressed. to cool down. When the engine . Pressing the cruise control SET- starts, let go of the key and button a second time. accelerator. If the vehicle starts briefly but then stops again, do GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

260 Driving and Operating . Pressing the accelerator more Accessory Power Outlets (APOs) Engine Coolant Heater than one-quarter of the The vehicle may have Accessory way down. The engine heater can provide Power Outlets (APOs) in several easier starting and better fuel 0 . Turning the ignition off. locations. See Power Outlets 133. economy during engine warm-up in The APOs in the console or center cold weather conditions at or below Retained Accessory seat position are powered by −18 °C (0 °F). Vehicles with an Power (RAP) Retained Accessory Power (RAP). engine heater should be plugged in They will continue to work for up to at least four hours before starting. The following vehicle accessories 10 minutes after the key is turned An internal thermostat in the can be used for up to 10 minutes from ON/RUN to LOCK/OFF, or until plug-end of the cord may exist, after the engine is turned off: the driver door is opened. which will prevent engine coolant Audio System heater operation at temperatures . The APOs on the center stack come above −18 °C (0 °F). . Power Windows from the factory powered directly If the vehicle has a diesel engine, . OnStar System (if equipped) from the vehicle battery, and supply accessory power at all times, see the Duramax diesel . Sunroof (if equipped) regardless of ignition key position. supplement. These features work when the key If electronic items are left plugged is in ON/RUN or ACC/ into these APOs for long periods of { Warning ACCESSORY. Once the key is time with the vehicle off, the vehicle turned from ON/RUN to LOCK/OFF, battery could be drained. The Do not plug in the engine block the windows and sunroof continue vehicle may not start if the battery is heater while the vehicle is parked to work up to 10 minutes or until any allowed to drain for an extended in a garage or under a carport. door is opened. The radio continues period of time. Property damage or personal to work for up to 10 minutes or until injury may result. Always park the the driver door is opened. vehicle in a clear open area away from buildings or structures. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 261 To Use the Engine Coolant Heater { Warning Warning (Continued) 1. Turn off the engine. Improper use of the heater cord it overheat and cause a fire, property damage, electric 2. Open the hood and unwrap the or an extension cord can damage shock, and injury. electrical cord. The cord is the cord and may result in secured to the driver side overheating and fire. . Do not operate the vehicle fender with a clip, next to the . Plug the cord into a with the heater cord engine compartment fuse three-prong electrical utility permanently attached to the block. Carefully remove the receptacle that is protected vehicle. Possible heater wire tie that bundles the by a ground fault detection cord and thermostat electrical plug. Do not cut the function. An ungrounded damage could occur. electrical cord. outlet could cause an . While in use, do not let the Check the heater cord for electric shock. heater cord touch vehicle damage. If it is damaged, do . Use a weatherproof, parts or sharp edges. Never not use it. See your dealer for heavy-duty, 15 amp-rated close the hood on the a replacement. Inspect the extension cord if needed. heater cord. cord for damage yearly. Failure to use the . Before starting the vehicle, 3. Plug the cord into a normal, recommended extension unplug the cord, reattach grounded 110-volt AC outlet. cord in good operating the cover to the plug, and condition, or using a securely fasten the cord. damaged heater or Keep the cord away from extension cord, could make any moving parts. (Continued) 4. Before starting the engine, be sure to unplug and store the cord as it was before to keep it GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

262 Driving and Operating away from moving engine Leaving the Vehicle with the parts. If you do not, it could be Warning (Continued) Engine Running damaged. is in P (Park). Be sure the transfer The length of time the heater should case is in a drive gear. If towing a { Warning remain plugged in depends on trailer, see Driving Characteristics It can be dangerous to leave the several factors. Ask a dealer in the and Towing Tips 0 303. area where you will be parking the vehicle with the engine running. vehicle for the best advice on this. The vehicle could move suddenly 1. Hold the brake pedal down, if the shift lever is not fully in then set the parking brake. See P (Park) with the parking brake Shifting Into Park 0 Parking Brake 281. firmly set. { Warning 2. Move the shift lever into the If you have four-wheel drive and P (Park) position by pulling the the transfer case is in N (Neutral), It can be dangerous to get out of shift lever toward you and the vehicle will be free to roll, moving it up as far as it will go. the vehicle if the shift lever is not even if the shift lever is in fully in P (Park) with the parking 3. Be sure the transfer case (if P (Park). So be sure the transfer brake firmly set. The vehicle can equipped) is in a drive gear– case is in a drive gear – not in roll. If you have left the engine not in N (Neutral). N (Neutral). running, the vehicle can move 4. Turn the ignition off. suddenly. You or others could be And, if you leave the vehicle with injured. To be sure the vehicle will 5. Remove the key and take it the engine running, it could not move, even when you are on with you. If you can leave the overheat and even catch fire. You fairly level ground, use the steps vehicle with the ignition key in or others could be injured. Do not that follow. With four-wheel drive, your hand, the vehicle is in leave the vehicle with the engine if the transfer case is in P (Park). running unless you have to. N (Neutral), the vehicle will be free to roll, even if the shift lever (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 263 If you have to leave the vehicle with When you are ready to drive, move To shift out of P (Park): the engine running, be sure the the shift lever out of P (Park) before 1. Apply the brake pedal. vehicle is in P (Park) and the you release the parking brake. parking brake is firmly set before 2. Move the shift lever to the If torque lock does occur, you may desired position. you leave it. After you move the shift need to have another vehicle push lever into P (Park), hold the regular yours a little uphill to take some of If you still are unable to shift out of brake pedal down. Then, see if you the pressure from the parking pawl P (Park): can move the shift lever away from in the transmission. You will then be P (Park) without first pulling it toward 1. Ease the pressure on the shift able to pull the shift lever out of lever. you. If you can, it means that the P (Park). shift lever was not fully locked into 2. While holding down the brake P (Park). Shifting out of Park pedal, push the shift lever all the way into P (Park). Torque Lock This vehicle is equipped with an 3. Move the shift lever to the If you are parking on a hill and you electronic shift lock release system. desired position. do not shift the transmission into The shift lock release system is P (Park) properly, the weight of the designed to prevent movement of If you are still having a problem vehicle may put too much force on the shift lever out of P (Park), unless shifting, then have the vehicle the parking pawl in the the ignition is on and the brake serviced soon. transmission. You may find it difficult pedal is applied. This vehicle may have the Seat Belt to pull the shift lever out of P (Park). The shift lock release is always Assurance System, which may This is called torque lock. To functional except in the case of an prevent the vehicle from shifting out prevent torque lock, set the parking uncharged or low voltage (less than of P (Park). brake and then shift into P (Park) 9 volt) battery. properly before you leave the driver seat. If the vehicle has an uncharged battery or a battery with low voltage, try charging or jump starting the battery. See Jump Starting - North America 0 426. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

264 Driving and Operating Parking over Things When less power is required, such Engine Exhaust as cruising at a constant vehicle That Burn speed, the system will operate in the V4 mode, allowing the vehicle to { Warning { Warning achieve better fuel economy. When greater power demands are Engine exhaust contains carbon Things that can burn could touch required, such as accelerating from monoxide (CO), which cannot be hot exhaust parts under the a stop, passing, or merging onto a seen or smelled. Exposure to CO vehicle and ignite. Do not park freeway, the system will maintain can cause unconsciousness and over papers, leaves, dry grass, full-cylinder operation. even death. or other things that can burn. If the vehicle has an Active Fuel Exhaust may enter the vehicle if: Management indicator, see Driver . The vehicle idles in areas Active Fuel Management Information Center (DIC) (Uplevel with poor ventilation 0 and Denali Cluster) 160 or Driver (parking garages, tunnels, Vehicles with a V8 or V6 gasoline Information Center (DIC) (Base deep snow that may block engine may have Active Fuel 0 Level Cluster) 158 for more underbody airflow or tail Management. This system allows information on using this display. the engine to operate on either all of pipes). its cylinders, or in V4 mode, . The exhaust smells or depending on the driving conditions. sounds strange or different. . The exhaust system leaks due to corrosion or damage. . The vehicle exhaust system has been modified, damaged, or improperly repaired. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 265 Running the Vehicle Warning (Continued) Automatic While Parked Transmission . There are holes or openings It is better not to park with the in the vehicle body from If equipped, there is an electronic engine running. damage or aftermarket shift lever position indicator within modifications that are not If the vehicle is left with the engine the instrument cluster. This display completely sealed. running, follow the proper steps to comes on when the ignition key is be sure the vehicle will not move. turned on. If unusual fumes are detected or 0 See Shifting Into Park 262 and There are several different positions if it is suspected that exhaust is Engine Exhaust 0 264. coming into the vehicle: for the shift lever. If parking on a hill and pulling a . Drive it only with the trailer, see Driving Characteristics windows completely down. and Towing Tips 0 303. . Have the vehicle repaired immediately. Never park the vehicle with the engine running in an enclosed Heavy-Duty 6-Speed Automatic area such as a garage or a Transmission Shown, Others building that has no fresh air Similar ventilation. See “Range Selection Mode” under Manual Mode 0 268. P: This position locks the rear wheels. Use P (Park) when starting the engine because the vehicle cannot move easily. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

266 Driving and Operating When parked on a hill, especially To rock the vehicle back and forth to when the vehicle has a heavy load, { Warning get out of snow, ice, or sand without you might notice an increase in the damaging the transmission, see If effort to shift out of P (Park). See If equipped with four-wheel drive, the Vehicle Is Stuck 0 247. the vehicle will be free to roll if the “Torque Lock” under Shifting Into N: In this position, the engine does Park 0 262 transfer case is in N (Neutral), even when the shift lever is in not connect with the wheels. To restart the engine when the vehicle { Warning P (Park). You or someone else could be seriously injured. Be is already moving, use N (Neutral) only. It is dangerous to get out of the sure the transfer case is in a drive vehicle if the shift lever is not fully gear — 2 m, 4 m, or 4 n or set the Also, use N (Neutral) when the vehicle is being towed. in P (Park) with the parking brake parking brake before placing the firmly set. The vehicle can roll. transfer case in N (Neutral). See 0 { Warning Do not leave the vehicle when the Shifting Into Park 262. engine is running. If you have left Shifting into a drive gear while the the engine running, the vehicle R: Use this gear to back up. engine is running at high speed is can move suddenly. You or others dangerous. Unless your foot is could be injured. To be sure the Caution firmly on the brake pedal, the vehicle will not move, even when vehicle could move very rapidly. you are on fairly level ground, Shifting to R (Reverse) while the You could lose control and hit always set the parking brake and vehicle is moving forward could people or objects. Do not shift move the shift lever to P (Park). damage the transmission. The into a drive gear while the engine See Shifting Into Park 0 262 and repairs would not be covered by is running at high speed. Driving Characteristics and the vehicle warranty. Shift to Towing Tips 0 303. R (Reverse) only after the vehicle is stopped. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 267 D: This position is for normal The vehicle has a shift stabilization Caution driving. It provides the best fuel feature that adjusts the transmission economy. If more power is needed shifting to the current driving Shifting out of P (Park) or for passing, press the accelerator conditions in order to reduce rapid N (Neutral) with the engine pedal down. upshifts and downshifts. This shift running at high speed may . Going less than about 55 km/h stabilization feature is designed to damage the transmission. The determine, before making an repairs would not be covered by (35 mph), push the accelerator pedal about halfway down. upshift, if the engine is able to the vehicle warranty. Be sure the maintain vehicle speed by analyzing engine is not running at high . Going about 55 km/h (35 mph) or things such as vehicle speed, speed when shifting the vehicle. more, push the accelerator all throttle position, and vehicle load. the way down. If the shift stabilization feature By doing this, the vehicle shifts determines that a current vehicle speed cannot be maintained, the Caution down to the next gear and has more power. transmission does not upshift and instead holds the current gear. A transmission hot message may Use D (Drive) and Tow/Haul Mode In some cases, this could appear to display if the automatic when towing a trailer, carrying a be a delayed shift, however the transmission fluid is too hot. heavy load, driving on steep hills, transmission is operating normally. Driving under this condition can or driving off-road. Shift the damage the vehicle. Stop and idle transmission to a lower gear The transmission uses adaptive the engine to cool the automatic selection if the transmission shifts shift controls. The adaptive shift transmission fluid. This message too often. control process continually compares key shift parameters to clears when the transmission fluid Downshifting the transmission in pre-programmed ideal shifts stored has cooled sufficiently. slippery road conditions could result in the transmission’s computer. The in skidding. See “Skidding” under transmission constantly makes 0 Loss of Control 238. adjustments to improve vehicle performance according to how the vehicle is being used, such as with a heavy load or when the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

268 Driving and Operating temperature changes. During this For other forms of grade braking, adaptive shift control process, Caution (Continued) see Tow/Haul Mode 0 271 and shifting might feel different as the Cruise Control 0 285. transmission determines the best When stopping on a hill, use the settings. brakes to hold the vehicle in Kickdown Mode place. When temperatures are very cold, If equipped, the accelerator pedal the transmission's gear shifting provides an additional downshift could be delayed providing more Normal Mode Grade Braking after pressing through the kickdown feature. stable shifts until the engine warms If equipped with a gasoline engine up. Shifts could be more noticeable and an automatic transmission, It requires extra pedal pressure near with a cold transmission. This Normal Mode Grade Braking is the end of its travel to engage. difference in shifting is normal. enabled when the vehicle is started, L: This position allows selection of but is not enabled in Range Manual Mode Selection Mode. It assists in a range of gears appropriate for Range Selection Mode current driving conditions. maintaining desired vehicle speeds If equipped, see “Range Selection when driving on downhill grades by Mode” under Manual Mode 0 268. using the engine and transmission to slow the vehicle. The first time Caution the system engages for each ignition key cycle, a DIC message Spinning the tires or holding the will be displayed. vehicle in one place on a hill To disable or enable Normal Mode using only the accelerator pedal Grade Braking within the current If equipped, Range Selection Mode may damage the transmission. ignition key cycle, press and hold helps control the vehicle's The repair will not be covered by the Tow/Haul button for transmission and vehicle speed the vehicle warranty. If the vehicle five seconds. When the button is while driving downhill or towing a is stuck, do not spin the tires. released, the requested mode trailer by letting you select a desired range of gears. (Continued) change is made. A DIC message displays. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 269 To use this feature: When the shift lever is moved from automatically shifted by the 1. Move the shift lever to D (Drive) to L (Manual Mode), a transmission, but 6 (Sixth) cannot be L (Manual Mode). number displays next to the L, used until the plus/minus button on indicating the current transmission the shift lever is used to change to 2. Press the plus/minus buttons range. the range. on the shift lever to select the desired range of gears for This number is the highest gear that In vehicles with gasoline engines, current driving conditions. the transmission will command while when the shift lever is moved from operating in L (Manual Mode). All D (Drive) to L (Manual Mode), a With an 8-speed automatic gears below that number are downshift may occur. The gear that transmission, hold the plus/minus available. As driving conditions the transmission is operating in buttons on the shift lever to select change, the transmission can when the shift lever is moved from the highest or lowest range automatically shift to lower gears. D (Drive) to L (Manual Mode) available for the current vehicle For example, when L5 is selected, determines if a downshift occurs. speed. 1 (First) through 5 (Fifth) gears are See the following chart. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

270 Driving and Operating 6-Speed Automatic Transmission Grade Braking is not available when Range Selection Mode is active. Gear before shifting from 0 6th 5th 4th 3rd 2nd 1st See Tow/Haul Mode 271. D (Drive) to L (Manual Mode) While using Range Selection Mode, Range after shifting from L4 L4 L3 L2 L2 L1 cruise control and the Tow/Haul D (Drive) to L (Manual Mode) Mode can be used. If the vehicle has an exhaust brake, 8-Speed Automatic Transmission it can also be used, but will not automatically downshift the Gear before transmission. See “Exhaust Brake” shifting from 8th 7th 6th 5th 4th 3rd 2nd 1st in the Duramax diesel supplement. D (Drive) to L (Manual Mode) Caution Range after shifting from Spinning the tires or holding the D (Drive) to vehicle in one place on a hill L6 L6 L5 L4 L3 L3 L2 L1 L (Manual Mode) – using only the accelerator pedal Tow/Haul not may damage the transmission. engaged The repair will not be covered by Range after the vehicle warranty. If the vehicle shifting from is stuck, do not spin the tires. D (Drive) to L6 L5 L4 L3 L3 L3 L2 L1 When stopping on a hill, use the L (Manual Mode) – brakes to hold the vehicle in Tow/Haul engaged place. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 271 Low Traction Mode increased performance, vehicle Tow/Haul Mode Grade Braking control, and enhanced transmission If equipped, Low Traction Mode Tow/Haul Mode Grade Braking is and engine cooling when driving assists in vehicle acceleration when only enabled while the Tow/Haul down steep hills or mountain road conditions are slippery, such Mode is selected and the vehicle is grades, when towing, or when as with ice or snow. While the not in the Range Selection Mode. hauling heavy loads. vehicle is at a stop, select L2 using See “Tow/Haul Mode” listed Range Selection Mode. This will The selector button is on the end of previously and Manual Mode 0 268. limit torque to the wheels and help the shift lever. Turn the Tow/Haul Tow/Haul Mode Grade Braking to prevent the tires from spinning. Mode on and off by pressing the assists in maintaining desired button. When the Tow/Haul Mode is vehicle speeds when driving on Tow/Haul Mode enabled, a light on the instrument downhill grades by using the engine cluster will come on. and transmission to slow the For an eAssist vehicle, the Stop/ vehicle. Start function will become If equipped, on vehicles with a unavailable when Tow/Haul Mode is gasoline engine, to disable or active. enable Tow/Haul Grade Braking For an eAssist vehicle, the within the current ignition key cycle, Regenerative Braking functionality is press and hold the Tow/Haul button disabled when using the Tow/Haul for five seconds. When the button is Mode. See the eAssist supplement. released, the requested mode change is made. A DIC message is See Tow/Haul Mode Light 0 153 and displayed. Hill and Mountain Roads 0 245. Also see “Tow/Haul Mode” under Towing Equipment 0 325. Vehicles with an automatic transmission have a Tow/Haul Mode. The Tow/Haul Mode adjusts the transmission shift pattern to reduce shift cycling. This provides GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

272 Driving and Operating On vehicles with a diesel engine, Drive Systems Tow/Haul Mode Grade Braking can { Warning be enabled or disabled by pressing the Tow/Haul Mode button. Use the Four-Wheel Drive If equipped with four-wheel drive, the vehicle will be free to roll if the exhaust brake and Tow/Haul Mode If equipped, four-wheel drive for maximum grade braking. engages the front axle for extra transfer case is in N (Neutral), even when the shift lever is in 0 traction. See Towing Equipment 325. P (Park). You or someone else For other forms of grade braking, Read the appropriate section for could be seriously injured. Be see Automatic Transmission 0 265 transfer case operation before sure the transfer case is in a drive 0 using. and Cruise Control 285. gear — 2 m, 4 m, or 4 n or set the parking brake before placing the Caution transfer case in N (Neutral). See 0 Do not drive on clean, dry Shifting Into Park 262. pavement in 4 m and 4 n (if equipped) for an extended period of time. These conditions may Caution cause premature wear on the vehicle’s powertrain. Extended high-speed operation in 4 n may damage or shorten the Driving on clean, dry pavement in life of the drivetrain. 4 m or 4 n may: Engagement noise and bump when . Cause a vibration to be felt in the steering system. shifting between 4 n and 4 m or from N (Neutral), with the engine running, . Cause tires to wear faster. is normal. . Make the transfer case harder to shift, and cause it to run noisier. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 273 Shifting into 4 n will turn Traction An indicator light comes on when The vehicle can be shifted between Control and StabiliTrak off. See four-wheel drive is engaged. See 2 and 4 while the vehicle is 0 m m Traction Control/Electronic Stability Four-Wheel-Drive Light 153. moving. In extremely cold weather, Control 0 282. N (Neutral) : Use only when the it may be necessary to stop or slow Manual Transfer Case vehicle needs to be towed. the vehicle to shift into 4 m. See Recreational Vehicle Towing 0 430 or Towing the Vehicle 0 430. Using the Manual Transfer Case . Use quick motions to shift into or 2 m (Two-Wheel Drive High) : Use this setting for driving on most out of 4 n or N (Neutral). streets and highways. The front axle . Shifting may be harder when the is not engaged. This setting vehicle is cold, but will return to provides the best fuel economy. normal once warmed up. 4 n (Four-Wheel Drive Low) : This . Four-wheel drive reduces fuel setting also engages the front axle economy. and delivers extra torque. Choose . Delayed shifts from 4m to 2m may 4 n if driving off-road in deep sand, be experienced due to uneven deep mud, or deep snow, and while tire wear, low tire pressure, high Move the lever to shift into and out climbing or descending steep hills. vehicle loading, or cold of four-wheel drive. When engaged, keep vehicle speed temperatures. below 72 km/h (45 mph). Shifting from 2 m to 4 m 4 m (Four-Wheel Drive High) : Use this setting when extra traction is . Shifts can be made at any needed. The front axle engages and vehicle speed. helps when driving on snowy or icy . Shift in one continuous motion. roads, when off-roading, or when plowing snow. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

274 Driving and Operating . Shifting while the vehicle is in 2. Shift the transmission into Electronic Transfer Case motion may require that N (Neutral). moderate force be applied to the 3. Shift the transfer case shift shift lever before 4 m can be lever in one continuous motion. engaged, especially in cold weather. 4. Shifting with the vehicle at a stop may be more difficult. It is . In extremely cold weather, it may possible that the shift will not be necessary to slow or stop the complete and the transfer case vehicle to shift. will remain in N (Neutral). This is normal. To complete the . While in 4 , the vehicle can be m shift, with the engine running, driven at any posted legal speed shift the transmission to limit. D (Drive) and back to Shifting In or Out of 4 n N (Neutral), and reattempt the transfer case shift. Use the transfer case knob, next to the steering wheel, to shift into and Caution Shifting In or Out of N (Neutral) out of four-wheel drive for extra 1. Have the engine running. traction. Shifting the transfer case into 4 n 2. Set the parking brake. Press All of the lights will blink on then off while moving at speeds faster and hold the brake pedal. See momentarily when the ignition is than 5 km/h (3 mph) may cause Parking Brake 0 281. turned on. The light that remains on premature wear to the transfer will indicate the state of the 3. Place the transmission into case, and may cause the gears to transfer case. grind. N (Neutral). If the indicator mark on the switch 4. Shift the transfer case lever in does not match up with the light one continuous motion into or 1. If possible, shift with the then that likely means the switch out of N (Neutral). vehicle moving 5 km/h (3 mph) was moved when the ignition or less. was off. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 275 The indicator mark on the switch The settings are: off-roading, or when plowing snow. must line up with the indicator light N (Neutral) : Use only when the The vehicle can be shifted from 2 m before a shift can be commanded. vehicle needs to be towed. See to 4 m while the vehicle is moving. To command a shift rotate the Recreational Vehicle Towing 0 430 transfer case switch to the new or Towing the Vehicle 0 430. Shifting Into 4 m desired position. The light will blink meaning that the shift is in progress. 2 m (Two-Wheel Drive High) : Use Turn the knob to 4 m at any speed When the shift is completed the new for driving on most streets and up to 121 km/h (75 mph), except position will be illuminated. If the highways. The front axle is not from 4 . The indicator light will flash transfer case can not complete a n engaged. This setting provides the while shifting and will remain on the shift command, it will go back to its best fuel economy. selected setting. last chosen setting. 4 n (Four-Wheel Drive Low) : This In extreme cold weather it may be Shifting Into 2 m setting engages the front axle and necessary to slow or stop the delivers extra torque. Choose 4 n if Turn the knob to 2 m at any speed, vehicle to shift from 2m to 4m. driving off-road in deep sand, deep except when shifting from 4 n. Delayed shifts from 4m to 2m may be mud, or deep snow, and while experienced due to uneven tire climbing or descending steep hills. Shifting Into 4 n When engaged, keep vehicle speed wear, low tire pressure, high vehicle When 4 is engaged, vehicle speed loading, or cold temperatures. below 72 km/h (45 mph). n should be kept below 72 km/h Shifting into 4 n will turn Traction (45 mph). Caution Control and StabiliTrak off. See 1. The ignition must be on and Traction Control/Electronic Stability the vehicle must be stopped or Shifting the transmission into gear Control 0 282. before the requested mode moving less than 5 km/h indicator light has stopped 4 m (Four-Wheel Drive High) : Use (3 mph) with the transmission flashing could damage the when extra traction is needed. The in N (Neutral). It is best for the transfer case. front axle engages and helps when vehicle to be moving driving on snowy or icy roads, when 1.6 to 3.2 km/h (1 to 2 mph). GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

276 Driving and Operating 2. Turn the knob to 4 n. Wait for 2. Turn the knob to 4 m or 2 m. 5. Shift the transfer case to 2 m. the 4 n indicator light to stop Wait for the 4 m or 2 m indicator 6. Turn the transfer case knob flashing before shifting the light to stop flashing before clockwise to N (Neutral) until it transmission into gear. shifting the transmission stops and hold it there until the If the transmission is in gear and/or into gear. N (Neutral) light starts blinking. moving more than 5 km/h (3 mph), If the transmission is in gear and/or This will take at least 10 seconds. Then slowly the 4 n indicator light will flash for moving more than 5 km/h (3 mph), 30 seconds and not complete the the 4 m or 2 m indicator light will flash release the knob to the 4 n shift. After 30 seconds the transfer for 30 seconds, but will not complete position. The N (Neutral) light will come on when the transfer case will shift to 4 m. Turn the knob the shift. With the vehicle moving less than 5 km/h (3 mph), and the case shift to N (Neutral) is to 4 to see the indicator. With the m transmission in N (Neutral), attempt complete. vehicle moving less than 5 km/h the shift again. 7. With the engine running, verify (3 mph), and the transmission in that the transfer case is in N (Neutral), attempt the shift again. Shifting Into N (Neutral) N (Neutral) by shifting the Shifting Out of 4 n To shift: transmission to R (Reverse), 1. Park the vehicle on a level then to D (Drive). There should 1. To shift out of 4 n the vehicle surface. be no movement of the vehicle must be stopped or moving while shifting the transmission. less than 5 km/h (3 mph) with 2. Set the parking brake and press and hold the brake 8. Turn the engine off, and the the transmission in N (Neutral) ignition to ACC/ACCESSORY. and the ignition in on. It is best pedal. See Parking Brake 0 for the vehicle to be moving 281. 9. Place the transmission shift 1.6 to 3.2 km/h (1 to 2 mph). 3. Start the vehicle or turn the lever in P (Park). See ignition on. Recreational Vehicle Towing 0 430. 4. Shift the transmission to N (Neutral). 10. Turn the ignition off. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 277 Shifting Out of N (Neutral) Automatic Transfer Case The indicator mark on the switch To shift: must line up with the indicator light before a shift can be commanded. 1. Set the parking brake and To command a shift rotate the apply the brake pedal. transfer case switch to the new 2. Turn the ignition on with the desired position. The light will blink engine off. meaning that the shift is in progress. When the shift is completed the new 3. Shift the transmission to position will be illuminated. If the N (Neutral). transfer case can not complete a 4. Turn the transfer case knob to shift command, it will go back to its 2 m. last chosen setting. After the transfer case has The settings are: shifted out of N (Neutral), the N (Neutral) : Use only when the N (Neutral) light will go out. If equipped, use the transfer case vehicle needs to be towed. See knob next to the steering wheel to 0 5. Release the parking brake. Recreational Vehicle Towing 430 shift into and out of four-wheel drive. or Towing the Vehicle 0 430. Caution All of the lights will blink on then off 2 m (Two-Wheel Drive High) : Use momentarily when the ignition is for driving on most streets and Shifting the transmission into gear turned on. The light that remains on highways. The front axle is not before the requested mode will indicate the state of the engaged. This setting provides the indicator light has stopped transfer case. best fuel economy. flashing could damage the If the indicator mark on the switch AUTO (Automatic Four-Wheel transfer case. does not match up with the light Drive) : Use when road surface then that likely means the switch traction conditions are variable. was moved when the ignition 6. Start the engine and shift the When driving in AUTO, the front was off. transmission to the axle is engaged, and the vehicle's desired gear. power is sent to the front and rear GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

278 Driving and Operating wheels automatically based on Shifting into 4 n will turn Traction (3 mph) with the transmission driving conditions. This setting Control and StabiliTrak off. See in N (Neutral). It is best for the provides slightly lower fuel economy Traction Control/Electronic Stability vehicle to be moving than 2 m. Control 0 282. 1.6 to 3.2 km/h (1 to 2 mph). Do not use AUTO mode, Shifting Into 4 m or AUTO 2. Turn the knob to 4 n. Wait for if equipped, to park on a steep the 4 n indicator light to stop grade with poor traction such as ice, Turn the knob to the 4 m or AUTO flashing before shifting the snow, mud, or gravel. In AUTO position at any speed, except from transmission into gear. mode only the rear wheels will hold 4 n. The indicator light will flash the vehicle from sliding when while shifting and will remain on parked. If parking on a steep grade, Caution when the shift is completed. use 4 m to keep all four wheels Shifting the transmission into gear engaged. Shifting Into 2 m before the requested mode indicator light has stopped 4 m (Four-Wheel Drive High) : Use Turn the knob to 2 at any speed, m flashing could damage the this position when extra traction is except when shifting from 4 n. The transfer case. needed, such as when driving on indicator light will flash while shifting snowy or icy roads, when and will remain on when the shift is off-roading, or when plowing snow. completed. If the transmission is in gear and/or moving more than 5 km/h (3 mph), 4 (Four-Wheel Drive Low) : This n Shifting Into 4 n setting engages the front axle and the 4 n indicator light will flash for 30 seconds and not complete the When 4 is engaged, keep vehicle delivers extra torque. Choose 4 n n shift. After 30 seconds the transfer when driving off-road in deep sand, speed below 72 km/h (45 mph). case will shift to 4 m. Turn the knob deep mud, or deep snow, and while To shift: climbing or descending steep hills. to 4 m to display the indicator. With 1. The ignition must be on and the vehicle moving less than 5 km/h the vehicle must be stopped or (3 mph), and the transmission in moving less than 5 km/h N (Neutral), attempt the shift again. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 279 Shifting Out of 4 n If the transmission is in gear and/or 6. Turn the transfer case knob moving more than 5 km/h (3 mph), clockwise to N (Neutral) until it To shift: the 4 m, AUTO, or 2 m indicator light stops and hold it there until the 1. The vehicle must be stopped or will flash for 30 seconds but will not N (Neutral) light starts blinking. moving less than 5 km/h complete the shift. With the vehicle This will take at least (3 mph) with the transmission moving less than 5 km/h (3 mph), 10 seconds. Then slowly in N (Neutral) and the ignition and the transmission in N (Neutral), release the knob to the 4 n on. It is best for the vehicle to attempt the shift again. position. The N (Neutral) light be moving 1.6 to 3.2 km/h will come on when the transfer (1 to 2 mph). Shifting Into N (Neutral) case shift to N (Neutral) is To shift into N (Neutral): complete. 2. Turn the knob to 4 m, AUTO, or 2 m. Wait for the 4 m, AUTO, 1. Park the vehicle on a level 7. With the engine running, verify surface. that the transfer case is in or 2 m indicator light to stop 2. Set the parking brake and N (Neutral) by shifting the flashing before shifting the transmission to R (Reverse), transmission into gear. press and hold the brake pedal. See Parking Brake then shift the transmission to 0 281. D (Drive). There should be no Caution movement of the vehicle while 3. Start the vehicle or turn the shifting the transmission. Shifting the transmission into gear ignition on. 8. Turn the engine off, and the before the requested mode 4. Shift the transmission to ignition to ACC/ACCESSORY. indicator light has stopped N (Neutral). flashing could damage the 9. Place the transmission shift transfer case. 5. Shift the transfer case to 2 m. lever in P (Park). See Recreational Vehicle Towing 0 430. 10. Turn the ignition to off. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

280 Driving and Operating Shifting Out of N (Neutral) Brakes If driving safely on a wet road and it To shift out of N (Neutral): becomes necessary to slam on the brakes and continue braking to 1. Set the parking brake and Antilock Brake avoid a sudden obstacle, a apply the brake pedal. System (ABS) computer senses the wheels are slowing down. If one of the wheels 2. Turn the ignition on with the This vehicle has an Antilock Brake is about to stop rolling, the computer engine off. System (ABS), an advanced will separately work the brakes at electronic braking system that helps 3. Shift the transmission to each wheel. N (Neutral). prevent a braking skid. ABS can change the brake pressure When the vehicle begins to drive 4. Turn the transfer case knob to to each wheel, as required, faster away, ABS checks itself. the desired setting. than any driver could. This can help A momentary motor or clicking noise you steer around the obstacle while After the transfer case has may be heard while this test is going braking hard. shifted out of N (Neutral), the on, and it may even be noticed that N (Neutral) light will go out. the brake pedal moves a little. This As the brakes are applied, the 5. Release the parking brake. is normal. computer keeps receiving updates on wheel speed and controls 6. Start the engine and shift the braking pressure accordingly. transmission to the desired gear. Remember: ABS does not change the time needed to get a foot up to the brake pedal or always decrease stopping distance. If you get too close to the vehicle in front of you, If there is a problem with ABS, this there will not be enough time to warning light stays on. See Antilock apply the brakes if that vehicle Brake System (ABS) Warning Light suddenly slows or stops. Always 0 152. leave enough room up ahead to stop, even with ABS. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 281 Using ABS Set the parking brake by holding the message will appear and a chime regular brake pedal down, then will sound warning you that the Do not pump the brakes. Just hold pushing down the parking brake parking brake is still on. the brake pedal down firmly and let pedal. ABS work. You may hear the ABS pump or motor operating and feel If the ignition is on, the brake Brake Assist the brake pedal pulsate. This is system warning light will come on. The Brake Assist feature is normal. See Brake System Warning Light designed to assist the driver in 0 152. Braking in Emergencies stopping or decreasing vehicle speed in emergency driving ABS allows you to steer and brake Caution conditions. This feature uses the at the same time. In many stability system hydraulic brake emergencies, steering can help Driving with the parking brake on control module to supplement the more than even the very best can overheat the brake system power brake system under braking. and cause premature wear or conditions where the driver has damage to brake system parts. quickly and forcefully applied the Parking Brake Make sure that the parking brake brake pedal in an attempt to quickly is fully released and the brake stop or slow down the vehicle. The warning light is off before driving. stability system hydraulic brake control module increases brake pressure at each corner of the To release the parking brake, hold vehicle until the ABS activates. the regular brake pedal down, then Minor brake pedal pulsation or push down momentarily on the pedal movement during this time is parking brake pedal until you feel normal and the driver should the pedal release. Slowly pull your continue to apply the brake pedal as foot up off the parking brake pedal. the driving situation dictates. The If the parking brake is not released Brake Assist feature will when you begin to drive, a DIC automatically disengage when the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

282 Driving and Operating brake pedal is released or brake no rolling. The brakes will Ride Control Systems pedal pressure is quickly automatically release when the decreased. accelerator pedal is applied within the two-second window. If the Traction Control/ Hill Start Assist (HSA) vehicle is equipped with the Electronic Stability Integrated Trailer Brake Control Control This vehicle has a Hill Start Assist (ITBC) system, HSA may also apply (HSA) feature, which may be useful the trailer brakes. It will not activate System Operation when the vehicle is stopped on a if the vehicle is in a drive gear and The vehicle has a Traction Control grade. This feature is designed to facing downhill or if the vehicle is System (TCS) and StabiliTrak®, an prevent the vehicle from rolling, facing uphill and in R (Reverse). electronic stability control system. either forward or rearward, during There may be situations on minor These systems help limit wheel spin vehicle drive off. After you hills (less than 5% grade) with a and assist the driver in maintaining completely stop and hold the vehicle loaded vehicle or while pulling a control, especially on slippery road in a complete standstill on a grade, trailer where HSA may activate. HSA will automatically activate. conditions. If you release the brake pedal and During the transition period between TCS activates if it senses any of the then reapply the brake pedal while when you release the brake pedal drive wheels are spinning or HSA is activated, the brake pedal and start to accelerate to drive off beginning to lose traction. When this typically feels firmer with less pedal on a grade, HSA holds the braking happens, TCS applies the brakes to travel. pressure for a maximum of the spinning wheels and reduces two seconds to ensure that there is engine power to limit wheel spin. StabiliTrak activates when the vehicle senses a difference between the intended path and the direction the vehicle is actually traveling. StabiliTrak selectively applies braking pressure to any one of the vehicle wheel brakes to assist the driver in keeping the vehicle on the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 283 intended path. Trailer Sway Control When the transfer case (if equipped) indicate that the system is inactive (TSC) is also on automatically when is in Four-Wheel Drive Low, the and is not assisting the driver in the vehicle is started. See Trailer stability system is automatically maintaining control. The vehicle is Sway Control (TSC) 0 334. disabled, g comes on, and the safe to drive, but driving should be If cruise control is being used and appropriate message will appear on adjusted accordingly. traction control or StabiliTrak begins the DIC. Both traction control and If d comes on and stays on: to limit wheel spin, cruise control will StabiliTrak are automatically disengage. Cruise control may be disabled in this condition. 1. Stop the vehicle. turned back on when road 2. Turn the engine off and wait conditions allow. 15 seconds. Both systems come on 3. Start the engine. automatically when the vehicle is started and begins to move. The Drive the vehicle. If d comes on systems may be heard or felt while and stays on, the vehicle may need they are operating or while more time to diagnose the problem. performing diagnostic checks. This The indicator light for both systems If the condition persists, see your is normal and does not mean there is in the instrument cluster. This dealer. light will: is a problem with the vehicle. Turning the Systems Off It is recommended to leave both . Flash when TCS is limiting and On systems on for normal driving wheel spin conditions, but it may be necessary . Flash when StabiliTrak is to turn TCS off if the vehicle gets activated stuck in sand, mud, ice, or snow. See If the Vehicle Is Stuck 0 247 . Turn on and stay on when either and “Turning the Systems Off and system is not working On” later in this section. If either system fails to turn on or to activate, a message displays in the The button for TCS and StabiliTrak Driver Information Center (DIC), and is on the center stack. d comes on and stays on to GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

284 Driving and Operating To turn TCS and StabiliTrak on grades in a forward or reverse gear. Caution again, press and release g. The The HDC switch is on the center stack, below the climate controls. Do not repeatedly brake or traction off light i and the accelerate heavily when TCS is StabiliTrak OFF light g in the Press 5 to enable or disable HDC. off. The vehicle driveline could be instrument cluster turn off. Vehicle speed must be below damaged. 50 km/h (31 mph). StabiliTrak will automatically turn on if the vehicle exceeds 56 km/h To turn off only TCS, press and (35 mph). Traction control will release g. The traction off light i remain off. displays in the instrument cluster. The vehicle has a Trailer Sway The appropriate message will Control (TSC) feature and a Hill display in the DIC. To turn TCS on Start Assist (HSA) feature. again, press and release g. The See Trailer Sway Control (TSC) When enabled, the HDC light 0 traction off light i displayed in the 334 or Hill Start Assist (HSA) displays on the instrument cluster. 0 282. instrument cluster will turn off. A blinking HDC light indicates the Adding accessories can affect the system is actively applying the If TCS is limiting wheel spin when g vehicle performance. See is pressed, the system will not turn brakes to maintain vehicle speed. Accessories and Modifications HDC can maintain vehicle speeds off until the wheels stop spinning. 0 343. between 1 and 30 km/h (1 and To turn off both TCS and StabiliTrak, 19 mph) on grades greater than or press and hold g until the traction Hill Descent equal to 10%. off light i and the StabiliTrak OFF Control (HDC) If HDC is to be used for more than light g come on and stay on in the If equipped, Hill Descent Control three minutes or on grades steeper instrument cluster, then release. The (HDC) sets and maintains vehicle than 25%, the transfer case should appropriate message will display in speed while driving down steep be put into Four-Wheel Drive Low the DIC. (4 n) to reduce the possibility of brake overheating. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 285 Noise from the hydraulic brake 5 must be pressed again to Cruise Control control module is normal when HDC re-enable HDC. HDC may disable is active. after an extended period of use. With cruise control a speed of about 40 km/h (25 mph) or more can be When HDC is activated, the initial If this happens, HDC will require maintained without keeping your HDC speed is set to the current time to cool down. The length of foot on the accelerator. Cruise driving speed. It can be increased or time HDC remains active depends control does not work at speeds decreased by pressing +RES or on road conditions, grade, set below about 40 km/h (25 mph). SET- on the steering wheel, or by speed, vehicle loading, and outside applying the accelerator or brake temperature. pedal. This adjusted speed When enabled, if the vehicle speed { Warning becomes the new set speed. is above 30 km/h (19 mph) and Cruise control can be dangerous HDC will remain enabled between below 60 km/h (37 mph), a DIC where you cannot drive safely at message will display. 30 and 60 km/h (19 and 37 mph); a steady speed. Do not use however, vehicle speed cannot be cruise control on winding roads or set or maintained in this range. HDC Locking Rear Axle in heavy traffic. will automatically disable if the Vehicles with a locking rear axle can Cruise control can be dangerous vehicle speed is above 80 km/h give more traction on snow, mud, on slippery roads. On such roads, (50 mph) or above 60 km/h ice, sand, or gravel. It works like a fast changes in tire traction can (37 mph) for at least 30 seconds. standard axle most of the time, but when traction is low, this feature will cause excessive wheel slip, and allow the rear wheel with the most you could lose control. Do not use traction to move the vehicle. cruise control on slippery roads. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

286 Driving and Operating If equipped with an Allison or * : Press to disengage cruise Hydra-Matic 6-speed automatic control without erasing the set transmission, see “Tow/Haul Mode speed from memory. Grade Braking” under Tow/Haul Mode 0 271 for an explanation of Setting Cruise Control how cruise control interacts with the If 5 is on when not in use, SET− or Range Selection Mode, Tow/Haul +RES could get pressed and go into Mode, and Grade Braking systems. cruise when not desired. Keep 5 If the cruise control is being used off when cruise is not being used. and the Traction Control System (TCS) or StabiliTrak begins to limit 1. Press 5 to turn the cruise wheel spin, the cruise control will system on. automatically disengage. See 2. Get up to the desired speed. Traction Control/Electronic Stability 5 : Press to turn the system on or Control 0 282. If a collision alert off. A white indicator comes on in 3. Press and release SET−. the instrument cluster when cruise occurs when cruise control is 4. Remove your foot from the control is on and turns off when activated, cruise control is accelerator. disengaged. See Forward Collision cruise control is off. 0 The cruise control indicator on the Alert (FCA) System 292. When +RES : If there is a set speed in instrument cluster turns green after road conditions allow you to safely memory, press briefly to resume to cruise control has been set to the use it again, cruise control can be that speed or press and hold to desired speed. SeeInstrument turned back on. accelerate. If cruise control is Cluster 0 138. If the brakes are applied, the cruise already active, use to increase control disengages. vehicle speed. SET− : Press briefly to set the speed and activate cruise control. If cruise control is already active, use to decrease vehicle speed. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 287 Resuming a Set Speed Reducing Speed While Using pressing SET– will result in cruise If the cruise control is set at a Cruise Control control set to the current vehicle desired speed and then the brakes If the cruise control system is speed. are applied or * is pressed, the already activated: Using Cruise Control on Hills cruise control is disengaged without . Press and hold SET– until the How well the cruise control works erasing the set speed from memory. desired lower speed is reached, on hills depends on the vehicle Once the vehicle speed reaches then release it. speed, the load, and the steepness about 40 km/h (25 mph) or more, . To slow down in small of the hills. When going up steep press +RES briefly. The vehicle increments, briefly press SET–. hills, pressing the accelerator pedal returns to the previous set speed. For each press, the vehicle goes may be necessary to maintain vehicle speed. Increasing Speed While Using about 1.6 km/h (1 mph) slower. Cruise Control The speedometer reading can be While going downhill: displayed in either English or metric . Vehicles with a 6-speed If the cruise control system is 0 already activated: units. See Instrument Cluster 138. automatic transmission and a The increment value used depends gasoline engine have Cruise . Press and hold +RES until the on the units displayed. Grade Braking to help maintain desired speed is reached, then driver selected speed. release it. Passing Another Vehicle While Using Cruise Control Cruise Grade Braking is enabled . To increase vehicle speed in Use the accelerator pedal to when the vehicle is started and small increments, briefly press cruise control is active. It is not +RES. For each press, the increase the vehicle speed. When you take your foot off the pedal, the enabled in Range Selection vehicle goes about 1.6 km/h Mode. It assists in maintaining (1 mph) faster. vehicle will slow down to the previous set cruise speed. While driver selected speed when The speedometer reading can be pressing the accelerator pedal or driving on downhill grades by displayed in either English or metric shortly following the release to using the engine and 0 units. See Instrument Cluster 138. override cruise control, briefly transmission to slow the vehicle. The increment value used depends on the units displayed. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

288 Driving and Operating To disable and enable Cruise Ending Cruise Control Driver Assistance Grade Braking for the current There are four ways to end cruise ignition key cycle, press and control: Systems hold the Tow/Haul button for This vehicle may have features that five seconds. A DIC message . Step lightly on the brake pedal. work together to help avoid crashes displays. . Press *. or reduce crash damage while . Vehicles with a diesel engine driving, backing, and parking. Read . Shift the transmission to have Cruise Grade Braking this entire section before using N (Neutral). enabled when Tow/Haul Mode is these systems. on, the exhaust brake is on, . To turn off cruise control, or both are on. press 5. { Warning For other forms of descent control, Erasing Speed Memory see Hill Descent Control (HDC) Do not rely on the Driver 0 284, Automatic Transmission The cruise control set speed is Assistance Systems. These 0 265, and Tow/Haul Mode 0 271. erased from memory if 5 is pressed systems do not replace the need or the ignition is turned off. for paying attention and driving safely. You may not hear or feel alerts or warnings provided by these systems. Failure to use proper care when driving may result in injury, death, or vehicle damage. See Defensive Driving 0 236. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 289 Assistance Systems for Warning (Continued) Warning (Continued) Parking or Backing Under many conditions, these . Work if the area surrounding If equipped, the Rear Vision Camera systems will not: the detection sensor is (RVC), Rear Parking Assist (RPA), and Front Parking Assist (FPA) may . Detect children, damaged or not properly pedestrians, bicyclists, repaired. help the driver park or avoid objects. or animals. Always check around the vehicle Complete attention is always when parking or backing. . Detect vehicles or objects required while driving, and you outside the area monitored should be ready to take action The RVC and RPA will not work by the system. and apply the brakes and/or steer properly if the tailgate is down. If the the vehicle to avoid crashes. tailgate is down, do not use these . Work at all driving speeds. systems. . Warn you or provide you Rear Vision Camera (RVC) with enough time to avoid a Audible or Safety Alert Seat crash. Some driver assistance features When the vehicle is shifted into alert the driver of obstacles by R (Reverse), the RVC displays an . Work under poor visibility or image of the area behind the vehicle bad weather conditions. beeping. To change the volume of the warning chime, see “Comfort in the infotainment display. The . Work if the detection sensor and Convenience” under Vehicle previous screen displays when the is not cleaned or is covered Personalization 0 165. vehicle is shifted out of R (Reverse) by ice, snow, mud, or dirt. after a short delay. To return to the If equipped with the Safety Alert previous screen sooner, press any . Work if the detection sensor Seat, the driver seat cushion may button on the infotainment system, is covered up, such as with provide a vibrating pulse alert shift into P (Park), or reach a vehicle a sticker, magnet, or metal instead of beeping. To change this, speed of approximately plate. see “Collision/Detection Systems” 12 km/h (8 mph). (Continued) under Vehicle Personalization 0 165. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

290 Driving and Operating Displayed images may be farther or closer than they appear. The area Warning (Continued) displayed is limited and objects that are close to either corner of the vehicle before driving. Failure to bumper or under the bumper do not use proper care may result in display. injury, death, or vehicle damage. A warning triangle may display on the infotainment display to show Parking Assist that RPA has detected an object. With RPA, and if equipped with FPA, This triangle changes from amber to as the vehicle moves at speeds of red and increases in size the closer less than 8 km/h (5 mph) the the object. sensors on the bumpers may detect 1. View Displayed by the objects up to 2.5 m (8 ft) behind and Camera { Warning 1.2 m (4 ft) in front of the vehicle within a zone 25 cm (10 in) high off The camera(s) do not display the ground and below bumper level. children, pedestrians, bicyclists, These detection distances may be crossing traffic, animals, or any shorter during warmer or humid other object outside of the weather. Blocked sensors will not cameras’ field of view, below the detect objects and can also cause bumper, or under the vehicle. false detections. Keep the sensors Shown distances may be different clean of mud, dirt, snow, ice, and from actual distances. Do not slush; and clean sensors after a car drive or park the vehicle using wash in freezing temperatures. 1. View Displayed by the only these camera(s). Always Camera check behind and around the 2. Corners of the Rear Bumper (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 291 Safety Alert Seat will pulse five { Warning times. Beeps for FPA are higher pitched than for RPA. The Parking Assist system does not detect children, pedestrians, Turning the Features On or Off bicyclists, animals, or objects X located below the bumper or that Press on the center stack to are too close or too far from the turn the Front and Rear Parking Assist on or off. The indicator light in vehicle. It is not available at the button comes on when the speeds greater than 8 km/h features are on and turns off when (5 mph). To prevent injury, death, the features have been disabled. or vehicle damage, even with Parking Assist, always check the Front and Rear Parking Assist can The instrument cluster may have a area around the vehicle and be turned off, on, or on with towbar parking assist display with bars that check all mirrors before moving through vehicle personalization. See show “distance to object” and object forward or backing. “Park Assist” under Vehicle location information for the Parking Personalization 0 165. If the parking Assist system. As the object gets assist is turned off through vehicle closer, more bars light up and the personalization, the parking assist bars change color from yellow to button on the center stack will be amber to red. disabled. To turn the parking assist When an object is first detected in on again, select On in vehicle the rear, one beep will be heard personalization. The On with Towbar from the rear, or both sides of the setting allows for the parking assist Safety Alert Seat will pulse two to work properly with an attached times. When an object is very close trailer hitch. Turn off parking assist (<0.6 m (2 ft) in the vehicle rear, when towing a trailer. or <0.3 m (1 ft) in the vehicle front), a continuous beep will sound from the front or rear, or both sides of the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

292 Driving and Operating To turn the rear parking assist FCA detects vehicles within a Detecting the Vehicle Ahead symbols or guidance lines on or off, distance of approximately 60 m see “Rear Camera” under Vehicle (197 ft) and operates at speeds Personalization 0 165. above 8 km/h (5 mph).

Assistance Systems for { Warning Driving FCA is a warning system and If equipped, when driving the does not apply the brakes. When FCA warnings will not occur unless vehicle in a forward gear, Forward approaching a slower-moving or the FCA system detects a vehicle Collision Alert (FCA), Lane stopped vehicle ahead too rapidly, ahead. When a vehicle is detected, Departure Warning (LDW), and/or or when following a vehicle too the vehicle ahead indicator will Lane Keep Assist (LKA) can help to closely, FCA may not provide a display green. Vehicles may not be avoid a crash or reduce crash warning with enough time to help detected on curves, highway exit damage. avoid a crash. It also may not ramps, or hills, due to poor visibility; provide any warning at all. FCA or if a vehicle ahead is partially Forward Collision Alert does not warn of pedestrians, blocked by pedestrians or other (FCA) System animals, signs, guardrails, objects. FCA will not detect another vehicle ahead until it is completely If equipped, the FCA system may bridges, construction barrels, in the driving lane. help to avoid or reduce the harm or other objects. Be ready to take caused by front-end crashes. When action and apply the brakes. See approaching a vehicle ahead too Defensive Driving 0 236. { Warning quickly, FCA provides a red flashing FCA does not provide a warning alert on the windshield and rapidly FCA can be disabled with either the beeps or pulses the driver seat. to help avoid a crash, unless it FCA steering wheel control or, detects a vehicle. FCA may not FCA also lights an amber visual if equipped, through vehicle alert if following another vehicle detect a vehicle ahead if the FCA personalization. See “Collision/ much too closely. sensor is blocked by dirt, snow, Detection Systems” under Vehicle Personalization 0 165. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 293 When your vehicle approaches Selecting the Alert Timing Warning (Continued) another detected vehicle too rapidly, the red FCA display will flash on the or ice, or if the windshield is windshield. Also, eight rapid damaged. It may also not detect a high-pitched beeps will sound from vehicle on winding or hilly roads, the front, or both sides of the Safety or in conditions that can limit Alert Seat will pulse five times. visibility such as fog, rain, When this Collision Alert occurs, the or snow, or if the headlamps or brake system may prepare for driver windshield are not cleaned or in braking to occur more rapidly which proper condition. Keep the can cause a brief, mild deceleration. windshield, headlamps, and FCA Continue to apply the brake pedal sensors clean and in good repair. as needed. Cruise control may be disengaged when the Collision Alert occurs. Collision Alert The FCA control is on the steering Tailgating Alert wheel. Press [ to set the FCA timing to Far, Medium, Near, or Off. The first button press shows the current setting on the DIC. Additional button presses will change this setting. The chosen setting will remain until it is changed and will affect the timing of both the The vehicle ahead indicator will Collision Alert and the Tailgating display amber when you are Alert features. The timing of both following a vehicle ahead much too alerts will vary based on vehicle closely. speed. The faster the vehicle speed, the farther away the alert will occur. Consider traffic and weather GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

294 Driving and Operating conditions when selecting the alert Forward Automatic timing. The range of selectable alert { Warning timing may not be appropriate for all Braking (FAB) drivers and driving conditions. If the vehicle has Forward Collision FAB is an emergency crash Alert (FCA), it also has FAB, which preparation feature and is not Unnecessary Alerts includes Intelligent Brake designed to avoid crashes. Do FCA may provide unnecessary Assist (IBA). When the system not rely on FAB to brake the alerts for turning vehicles, vehicles detects a vehicle ahead in your path vehicle. FAB will not brake in other lanes, objects that are not that is traveling in the same outside of its operating speed vehicles, or shadows. These alerts direction that you may be about to range and only responds to are normal operation and the crash into, it can provide a boost to detected vehicles. vehicle does not need service. braking or automatically brake the FAB may not: vehicle. This can help avoid or Cleaning the System lessen the severity of crashes when . Detect a vehicle ahead on If the FCA system does not seem to driving in a forward gear. Depending winding or hilly roads. operate properly, this may correct on the situation, the vehicle may . Detect all vehicles, the issue: automatically brake moderately or especially vehicles with a hard. This forward automatic . Clean the outside of the trailer, tractors, muddy braking can only occur if a vehicle is vehicles, etc. windshield in front of the detected. This is shown by the FCA rearview mirror. vehicle ahead indicator being lit. . Detect a vehicle when . Clean the entire front of the See Forward Collision Alert (FCA) weather limits visibility, such vehicle. System 0 292. as in fog, rain, or snow. . Clean the headlamps. The system works when driving in a . Detect a vehicle ahead if it forward gear between 8 km/h is partially blocked by (5 mph) and 80 km/h (50 mph). pedestrians or other objects. It can detect vehicles up to (Continued) approximately 60 m (197 ft). GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 295 Intelligent Brake Assist (IBA) Warning (Continued) { Warning IBA may activate when the brake Complete attention is always pedal is applied quickly by providing Using FAB or IBA while towing a required while driving, and you a boost to braking based on the trailer could cause you to lose should be ready to take action speed of approach and distance to control of the vehicle and crash. and apply the brakes and/or steer a vehicle ahead. Turn the system to Alert or Off the vehicle to avoid crashes. Minor brake pedal pulsations or when towing a trailer. pedal movement during this time is FAB may slow the vehicle to a normal and the brake pedal should Lane Departure Warning complete stop to try to avoid a continue to be applied as needed. potential crash. The vehicle will only IBA will automatically disengage (LDW) (2500/3500 Series) hold at a stop briefly. A firm press of only when the brake pedal is If equipped, LDW may help avoid the accelerator pedal will released. crashes due to unintentional lane release FAB. departures. It may provide an alert if { Warning the vehicle is crossing a lane { Warning marking without using a turn signal IBA may increase vehicle braking in that direction. LDW uses a FAB may automatically brake the in situations when it may not be camera sensor to detect the lane vehicle suddenly in situations necessary. You could block the markings at speeds of 56 km/h where it is unexpected and flow of traffic. If this occurs, take (35 mph) or greater. undesired. It could respond to a your foot off the brake pedal and turning vehicle ahead, guardrails, then apply the brakes as needed. signs, and other non-moving objects. To override FAB, firmly FAB and IBA can be disabled press the accelerator pedal, if it is through vehicle personalization. See safe to do so. “Collision/Detection Systems” under Vehicle Personalization 0 165. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

296 Driving and Operating When LDW is on, @ is green if { Warning Warning (Continued) LDW is available to warn of a lane The LDW system does not steer attention on the road and departure. If the vehicle crosses a the vehicle. The LDW system maintain proper vehicle position detected lane marking without using may not: within the lane, or vehicle the turn signal in that direction, @ changes to amber and flashes. Provide enough time to damage, injury, or death could . Additionally, there may be three avoid a crash. occur. Always keep the windshield, headlamps, and beeps, or the driver seat may pulse . Detect lane markings under camera sensors clean and in three times on the right or left, poor weather or visibility good repair. Do not use LDW in depending on the lane departure conditions. This can occur if bad weather conditions. direction. the windshield or headlamps are blocked by When the System Does Not dirt, snow, or ice; if they are How the System Works Seem to Work Properly not in proper condition; or if The LDW camera sensor is on the The system may not detect lanes as the sun shines directly into windshield ahead of the rearview well when there are: the camera. mirror. . Close vehicles ahead. . Detect road edges. To turn LDW on and off, press @ on . Sudden lighting changes, such . Detect lanes on winding or the center stack. The control as when driving through tunnels. hilly roads. indicator will light when LDW is on. . Banked roads. If LDW only detects lane markings on one side of the road, If the LDW system is not functioning properly when lane markings are it will only warn you when clearly visible, cleaning the departing the lane on the side windshield may help. where it has detected a lane marking. Always keep your LDW alerts may occur due to tar marks, shadows, cracks in the road, (Continued) temporary or construction lane GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 297 markings, or other road imperfections. This is normal system { Warning Warning (Continued) operation; the vehicle does not need service. Turn LDW off if these The LKA system does not If LKA only detects lane markings conditions continue. continuously steer the vehicle. on one side of the road, it will It may not keep the vehicle in the only assist or provide an LDW Lane Keep Assist (LKA) lane or give a Lane Departure alert when approaching the lane Warning (LDW) alert, even if a on the side where it has detected (1500 Series) lane marking is detected. a lane marking. Even with LKA If equipped, LKA may help avoid The LKA and LDW systems and LDW, you must steer the crashes due to unintentional lane may not: vehicle. Always keep your departures. It may assist by gently attention on the road and turning the steering wheel if the . Provide an alert or enough maintain proper vehicle position vehicle approaches a detected lane steering assist to avoid a within the lane, or vehicle marking without using a turn signal lane departure or crash. damage, injury, or death could in that direction. It may also provide . Detect lane markings under occur. Always keep the a Lane Departure Warning (LDW) poor weather or visibility windshield, headlamps, and system alert as the lane marking is conditions. This can occur if camera sensors clean and in crossed. The LKA system will not the windshield or good repair. Do not use LKA in assist or provide an LDW alert if it headlamps are blocked by bad weather conditions. detects that you are actively dirt, snow, or ice, if they are steering. Override LKA by turning not in proper condition, or if the steering wheel. LKA uses a the sun shines directly into camera to detect lane markings the camera. { Warning between 60 km/h (37 mph) and 180 km/h (112 mph). . Detect road edges. Using LKA while towing a trailer . Detect lanes on winding or or on slippery roads could cause hilly roads. loss of control of the vehicle and (Continued) a crash. Turn the system off. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

298 Driving and Operating How the System Works Take Steering A camera blocked message may display if the camera is blocked. The LKA camera sensor is on the The LKA system does not Cleaning the outside of the windshield ahead of the rearview continuously steer the vehicle. windshield behind the rearview mirror. If LKA does not detect active driver steering, an alert, chime, or DIC mirror may correct the issue. Some To turn LKA on and off, press A message may be provided. Move driver assistance systems may have on the center stack. the steering wheel to dismiss. reduced performance or not work at all. An LKA or LDW unavailable When on, A is green if LKA is When the System Does Not message may display if the systems available to assist and provide LDW Seem to Work Properly are temporarily unavailable. This alerts. It may assist by gently message could be due to a blocked turning the steering wheel and The system performance may be camera. The LKA system does not affected by: display A as amber if the vehicle need service. Clean the outside of approaches a detected lane marking . Close vehicles ahead. the windshield behind the rearview mirror. without using a turn signal in that . Sudden lighting changes, such direction. It may also provide an as when driving through tunnels. LKA assistance and/or LDW alerts may occur due to tar marks, LDW alert by flashing A amber . Banked roads. as the lane marking is crossed. shadows, cracks in the road, Additionally, there may be three . Roads with poor lane markings, temporary or construction lane beeps, or the driver seat may pulse such as two-lane roads. markings, or other road three times, on the right or left, If the LKA system is not functioning imperfections. This is normal system depending on the lane departure properly when lane markings are operation; the vehicle does not need direction. clearly visible, cleaning the service. Turn LKA off if these windshield may help. conditions continue. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 299 Fuel Except the 6.2L engine, use regular Prohibited Fuels unleaded gasoline meeting ASTM For diesel engine vehicles, see specification D4814 with a posted Caution “Fuel for Diesel Engines” in the octane rating of 87 or higher. Do not Duramax diesel supplement. use gasoline with a posted octane Do not use fuels with any of the GM recommends the use of TOP rating of less than 87, as this may following conditions; doing so TIER Detergent Gasoline to keep cause engine knock and will lower may damage the vehicle and void the engine cleaner and reduce fuel economy. its warranty: engine deposits. See For the 6.2L engine, premium . For vehicles which are not www.toptiergas.com for a list of TOP unleaded gasoline meeting ASTM FlexFuel, fuel labeled TIER Detergent Gasoline marketers specification D4814 with a posted greater than 15% ethanol by and applicable countries. octane rating of 93 is highly volume, such as mid-level recommended for best performance ethanol blends (16 – 50% and fuel economy. Unleaded ethanol), E85, or FlexFuel. gasoline with an octane rated as low as 87 can be used. Using unleaded . Fuel with any amount of gasoline rated below 93 octane, methanol, methylal, and however, will lead to reduced aniline. These fuels can acceleration and fuel economy. corrode metal fuel system If knocking occurs, use a gasoline parts or damage plastic and rated at 93 octane as soon as rubber parts. possible, otherwise, the engine . Fuel containing metals such could be damaged. If heavy as methylcyclopentadienyl knocking is heard when using manganese tricarbonyl gasoline with a 93 octane rating, the (MMT), which can damage If the vehicle has a yellow sticker on engine needs service. the emissions control the fuel door, E85 or FlexFuel can system and spark plugs. be used. See E85 or FlexFuel (Continued) 0 300. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

300 Driving and Operating occurs, return to your authorized If your vehicle is able to use E85 or Caution (Continued) dealer for diagnosis. If it is FlexFuel, GM Fuel System determined that the condition is Treatment Cleaner - FlexFuel is the . Fuel with a posted octane caused by the type of fuel used, only recommended additive for use. rating of less than the repairs may not be covered by the Do not use any other additives with recommended fuel. Using vehicle warranty. an E85 or FlexFuel vehicle. See this fuel will lower fuel E85 or FlexFuel 0 300. economy and performance, and may decrease the life of Fuels in Foreign the emissions catalyst. Countries E85 or FlexFuel The U.S., Canada, and Mexico post Vehicles with a yellow sticker on the California Fuel fuel octane ratings in anti-knock fuel door can use either unleaded index (AKI). For fuel not to use in a gasoline or fuel containing up to Requirements foreign country, see “Prohibited 85% ethanol (E85). All other vehicles should use only the If the vehicle is certified to meet Fuels” in Fuel 0 299. unleaded gasoline as described in California Emissions Standards, it is Fuel 0 299. designed to operate on fuels that Fuel Additives meet California specifications. See The use of E85 or FlexFuel is To keep fuel systems clean, TOP the underhood emission control encouraged when the vehicle is TIER detergent gasoline is label. If this fuel is not available in designed to use it. E85 or FlexFuel recommended. See Fuel 0 299. states adopting California Emissions is made from renewable sources. If TOP TIER detergent gasoline is Standards, the vehicle will operate To help locate fuel stations that not available, one bottle of GM Fuel satisfactorily on fuels meeting carry E85 or FlexFuel, the U.S. System Treatment Cleaner added to federal specifications, but emission Department of Energy has an the fuel tank at every engine oil control system performance may be alternative fuels website. See change, can help. GM Fuel System affected. The malfunction indicator www.afdc.energy.gov/afdc/locator/ Treatment Cleaner is the only lamp could turn on and the vehicle stations. may not pass a smog-check test. gasoline additive recommended by See Malfunction Indicator Lamp General Motors. It is available at (Check Engine Light) 0 150. If this your dealer. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 301 E85 or FlexFuel should meet ASTM Specification D 5798 or Caution { Warning CAN/CGSB–3.512 in Canada. Do not use the fuel if the ethanol Some additives are not Fuel vapors and fuel fires burn content is greater than 85%. Fuel compatible with E85 or FlexFuel violently and can cause injury or mixtures that do not meet ASTM or and can harm the vehicle's fuel death. CGSB specifications can affect system. Do not add anything to . To help avoid injuries to you driveability and could cause the E85 or FlexFuel. Damage caused and others, read and follow malfunction indicator lamp to by additives would not be covered all the instructions on the come on. by the vehicle warranty. fuel pump island. For the 6.0L V8 engine, after . Turn off the engine when refueling, the vehicle calculates the refueling. composition of the fuel. It is not Caution recommended to repeatedly switch . Keep sparks, flames, and smoking materials away between fuels. If fuels are switched Do not use fuel containing from fuel. frequently, add as much fuel as methanol. It can corrode metal possible and do not add less than parts in the fuel system and also . Do not leave the fuel pump 11 L (3 gal) when refueling. Drive at damage plastic and rubber parts. unattended. least 11 km (7 mi) immediately after That damage would not be . Do not use a cell phone refueling to allow the vehicle to covered under the vehicle while refueling. adapt to the change in ethanol warranty. concentration. . Do not reenter the vehicle while pumping fuel. Because E85 or FlexFuel has less energy per liter (gallon) than Filling the Tank . Keep children away from gasoline, the vehicle will need to be If the vehicle has a diesel engine, the fuel pump and never let refilled more often. See Filling the see the Duramax diesel supplement children pump fuel. Tank 0 301. for more information. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

302 Driving and Operating For models with dual fuel tanks, the Warning (Continued) { Warning fuel gauge shows an average of both tanks. The rear tank is emptied . Fuel can spray out if the Overfilling the fuel tank by more first. When refueling, refuel the front refueling nozzle is inserted than three clicks of a standard fill tank first, then add fuel to the too quickly. This spray can nozzle may cause: rear tank. happen if the tank is nearly full, and is more likely in hot . Vehicle performance issues, Filling the Tank With a Portable weather. Insert the refueling including engine stalling and Gas Can damage to the fuel system. nozzle slowly and wait for If the vehicle runs out of fuel and any hiss noise to stop prior . Fuel spills. must be filled from a portable to beginning to flow fuel. . Potential fuel fires. gas can:

Be careful not to spill fuel. Wait a few seconds after you have finished pumping before removing the nozzle. Clean fuel from painted surfaces as soon as possible. See Exterior Care 0 435. 1. Locate the capless funnel { Warning adapter from inside the vehicle. 2. Insert and latch the funnel into The vehicle has a capless refueling If a fire starts while you are the capless fuel system. system and does not have a fuel refueling, do not remove the cap. The filling nozzle must be fully nozzle. Shut off the flow of fuel by inserted and latched prior to starting shutting off the pump or by fuel flow. notifying the station attendant. Leave the area immediately. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 303

{ Warning Warning (Continued) Trailer Towing Attempting to refuel without using . Use approved fuel General Towing the funnel adapter may cause fuel containers. Information spillage and damage the capless . Remove the container from Only use towing equipment that has fuel system. This could cause a the vehicle, trunk, or pickup been designed for the vehicle. fire and you or others could be bed before filling. badly burned and the vehicle Contact your dealer or trailering . Place the container on the could be damaged. dealer for assistance with preparing ground. the vehicle for towing a trailer. Read . Place the nozzle inside the the entire section before towing a 3. Remove and clean the funnel fill opening of the container trailer. adapter and return to the before dispensing fuel, and For towing a disabled vehicle, see storage location. keep it in contact with the fill Towing the Vehicle 0 430. For opening until filling is towing the vehicle behind another Filling a Portable Fuel complete. vehicle such as a motor home, see 0 Container . Fill the container no more Recreational Vehicle Towing 430. than 95% full to allow for { Warning expansion. Driving Characteristics and Towing Tips Filling a portable fuel container . Do not smoke, light while it is in the vehicle can cause matches, or use lighters Driving with a Trailer while pumping fuel. fuel vapors that can ignite either When towing a trailer: by static electricity or other . Avoid using cell phones or means. You or others could be other electronic devices. . Become familiar with the state badly burned and the vehicle and local laws that apply to could be damaged. Always: trailer towing. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

304 Driving and Operating . The trailer must be equipped . Vehicles can tow in D (Drive). with brakes adequate for the The Tow/Haul Mode may be Warning (Continued) intended use. A loaded trailer used if the transmission shifts weighing more than 900 kg too often. See Tow/Haul Mode . Also adjust the climate (2,000 lb) must be equipped with 0 271. control system to a setting that brings in only outside its own brake system, with . The Forward Automatic Braking brakes working on all axles. air. See “Climate Control System should be set to Off Systems” in the Index. Trailer braking equipment when towing. See Forward conforming to Canadian Automatic Braking (FAB) 0 294. For more information about Standards Association (CSA) carbon monoxide, see Engine requirement CAN3-D313, or its . Turn off Lane Keep Assist (LKA) Exhaust 0 264. equivalent, is recommended. when towing. . Do not tow a trailer during the { Warning Towing a trailer requires a certain first 800 km (500 mi) to prevent amount of experience. The damage to the engine, axle, When towing a trailer, exhaust combination you are driving is or other parts. gases may collect at the rear of longer and not as responsive as the . Then during the first 800 km the vehicle and enter if the vehicle itself. Get acquainted with the handling and braking of the rig (500 mi) of trailer towing, do not liftgate, trunk/hatch, or rear-most before setting out for the open road. drive over 80 km/h (50 mph) and window is open. do not make starts at full throttle. The structure, tires, and brakes of When towing a trailer: . The vehicle can tow in D (Drive) the trailer must be rated to carry the but Manual Mode is . Do not drive with the load. Inadequate trailer equipment recommended. See Manual liftgate, trunk/hatch, can cause the combination to Mode 0 268. Use a lower gear if or rear-most window open. operate in an unexpected or unsafe the transmission shifts too often. . Fully open the air outlets on manner. or under the instrument Before starting, check all trailer hitch panel. parts and attachments, safety (Continued) chains, electrical connectors, lamps, GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 305 tires, and mirrors. Get familiar with Backing Up If the trailer turn signal bulbs burn the handling and braking of the rig. out, the arrows on the instrument Hold the bottom of the steering If the trailer has electric brakes, start cluster will still flash for turns. It is wheel with one hand. To move the the combination moving and then important to check occasionally to trailer to the left, move that hand to apply the trailer brake controller by be sure the trailer bulbs are still the left. To move the trailer to the hand to be sure the brakes work. working. right, move your hand to the right. During the trip, check occasionally Always back up slowly and, Turn Signals When Towing a to be sure that the load is secure if possible, have someone Trailer and the lamps and any trailer guide you. brakes still work. The turn signal indicators on the Making Turns instrument cluster flash whenever Following Distance signaling a turn or lane change. Stay at least twice as far behind the Caution Properly hooked up, the trailer vehicle ahead as you would when lamps also flash, telling other driving the vehicle without a trailer. Making very sharp turns while drivers the vehicle is turning, This can help to avoid heavy trailering could cause the trailer to changing lanes, or stopping. braking and sudden turns. come in contact with the vehicle. When towing a trailer, the arrows on The vehicle could be damaged. the instrument cluster flash for turns Passing Avoid making very sharp turns even if the bulbs on the trailer are More passing distance is needed while trailering. burned out. when towing a trailer. The Check occasionally to be sure the combination will not accelerate as When turning with a trailer, make trailer bulbs are still working. quickly and is longer so it is wider turns than normal. Do this so necessary to go much farther the trailer will not strike soft beyond the passed vehicle before shoulders, curbs, road signs, trees, returning to the lane. or other objects. Avoid jerky or sudden maneuvers. Signal well in advance. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

306 Driving and Operating Driving on Grades minutes before turning the engine 3. When the wheel chocks are in off. If the overheat warning comes place, release the regular Reduce speed and shift to a lower on, see Engine Overheating 0 363. brakes until the chocks absorb gear before starting down a long or the load. steep downgrade. If the Parking on Hills transmission is not shifted down, the 4. Reapply the brake pedal. Then brakes might get hot and no longer { Warning apply the parking brake and work well. shift into P (Park). Vehicles can tow in D (Drive). Shift Parking the vehicle on a hill with 5. Release the brake pedal. the transmission to a lower gear if the trailer attached can be the transmission shifts too often dangerous. If something goes Leaving After Parking on a Hill under heavy loads and/or hilly wrong, the rig could start to move. 1. Apply and hold the brake conditions. People can be injured, and both pedal. The Tow/Haul Mode may be used if the vehicle and the trailer can be . Start the engine. damaged. When possible, always the transmission shifts too often. . Shift into a gear. See Tow/Haul Mode 0 271. park the rig on a flat surface. . Release the parking brake. When towing at high altitude on steep uphill grades, consider the If parking the rig on a hill: 2. Let up on the brake pedal. following: Engine coolant will boil at 1. Press the brake pedal, but do 3. Drive slowly until the trailer is a lower temperature than at normal not shift into P (Park) yet. Turn clear of the chocks. altitudes. If the engine is turned off the wheels into the curb if 4. Stop and have someone pick immediately after towing at high facing downhill or into traffic if up and store the chocks. altitude on steep uphill grades, the facing uphill. vehicle may show signs similar to engine overheating. To avoid this, 2. Have someone place chocks let the engine run while parked, under the trailer wheels. preferably on level ground, with the transmission in P (Park) for a few GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 307 Maintenance when Trailer Trailer Towing Towing Caution If the vehicle has a diesel engine, The vehicle needs service more see the Duramax diesel Pulling a trailer improperly can often when pulling a trailer. See supplement. damage the vehicle and result in Maintenance Schedule 0 448. costly repairs not covered by the Do not tow a trailer during break-in. Things that are especially important See New Vehicle Break-In 0 255. vehicle warranty. To pull a trailer in trailer operation are automatic correctly, follow the advice in this transmission fluid, engine oil, axle section and see your dealer for lubricant, belts, cooling system, and { Warning important information about brake system. It is a good idea to towing a trailer with the vehicle. inspect these before and during The driver can lose control when the trip. pulling a trailer if the correct equipment is not used or the See Vehicle Load Limits 0 248 for Check periodically to see that all vehicle is not driven properly. For more information about the vehicle's hitch nuts and bolts are tight. example, if the trailer is too heavy maximum load capacity. Engine Cooling When Trailer or the trailer brakes are To identify the trailering capacity of Towing inadequate for the load, the the vehicle, read the information in vehicle may not stop as expected. “Weight of the Trailer” later in this The cooling system may temporarily The driver and passengers could overheat during severe operating section. be seriously injured. The vehicle conditions. See Engine Overheating may also be damaged; the Trailering is different than just 0 363. driving the vehicle by itself. resulting repairs would not be Trailering means changes in covered by the vehicle warranty. handling, acceleration, braking, Pull a trailer only if all the steps in durability, and fuel economy. this section have been followed. Successful, safe trailering takes Ask your dealer for advice and correct equipment, and it has to be information about towing a trailer used properly. with the vehicle. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

308 Driving and Operating The following information has many Trailer weight rating (TWR) for For kingpin weight and trailer time-tested, important trailering tips pickup models is calculated tongue weight information, see and safety rules. Many of these are assuming the tow vehicle has the “Weight of the Trailer Tongue” later important for your safety and that of driver, a front seat passenger, and in this section. your passengers. Read this section all required trailering equipment. Use the following chart to determine carefully before pulling a trailer. Weight of additional optional how much the vehicle can weigh, equipment, passengers, and cargo Weight of the Trailer based upon the vehicle model and in the tow vehicle must be options. Safe trailering requires monitoring subtracted from the trailer weight the weight, speed, altitude, road rating. Weights listed apply for grades, outside temperature, and conventional trailers and Ask your dealer for trailering gooseneck/fifth-wheel trailers unless how frequently the vehicle is used to information or advice. pull a trailer. Take into consideration otherwise noted. any special equipment on the A step-bumper trailer hitch is limited vehicle, and the amount of tongue to 2,271 kg (5,000 lb) total trailer weight the vehicle can carry. See weight. If a trailer hitch ball is added “Weight of the Trailer Tongue” later to the step-bumper, ensure that the in this section for more information. ball is rated to pull the trailer's weight. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

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1500/2500/3500 Series Pickups – SAE J2807 Compliant Maximum Trailer Vehicle Axle Ratio Weight (c) GCWR (a) 1500 Series 2WD Regular Cab Standard Box 4.3LV6 3.23 2 722 kg (6,000 lb) 4 990 kg (11,000 lb) 4.3LV6 4.10 2 087 kg (4,600 lb) 4 309 kg (9,500 lb) 5.3LV8 3.08 3 130 kg (6,900 lb) 5 443 kg (12,000 lb) 5.3LV8 3.42 4 037 kg (8,900 lb) 6 350 kg (14,000 lb) 1500 Series 2WD Double Cab Standard Box 4.3LV6 3.23 2 540 kg (5,600 lb) 4 990 kg (11,000 lb) 5.3LV8 3.08 2 903 kg (6,400 lb) 5 443 kg (12,000 lb) 5.3LV8, 6-speed automatic 3.42 4 264 kg (9,400 lb) 6 804 kg (15,000 lb) transmission 5.3LV8, 8-speed automatic 3.42 4 264 kg (9,400 lb) 6 804 kg (15,000 lb) transmission – Conventional Trailer 5.3LV8, 8-speed automatic 3.42 4 128 kg (9,100 lb) 6 804 kg (15,000 lb) transmission – Gooseneck/ Fifth-Wheel Trailer GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

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1500/2500/3500 Series Pickups – SAE J2807 Compliant Maximum Trailer Vehicle Axle Ratio Weight (c) GCWR (a) 5.3LV8, 8-speed automatic 3.42 5 035 kg (11,100 lb) 7 575 kg (16,700 lb) transmission with Enhanced Towing Package – Conventional Trailer 5.3LV8, 8-speed automatic 3.42 4 990 kg (11,000 lb) 7 575 kg (16,700 lb) transmission with Enhanced Towing Package – Gooseneck/ Fifth-Wheel Trailer 5.3LV8 – Conventional Trailer 3.73 5 035 kg (11,100 lb) 7 575 kg (16,700 lb) 5.3LV8 – Gooseneck/Fifth-Wheel 3.73 4 990 kg (11,000 lb) 7 575 kg (16,700 lb) Trailer 6.2LV8 – Conventional Trailer 3.23 4 264 kg (9,400 lb) 6 804 kg (15,000 lb) 6.2LV8 – Gooseneck/Fifth-Wheel 3.23 4 082 kg (9,000 lb) 6 804 kg (15,000 lb) Trailer 6.2LV8 – Conventional Trailer 3.42 5 670 kg (12,500 lb) 8 255 kg (18,200 lb) 6.2LV8 – Gooseneck/Fifth-Wheel 3.42 5 262 kg (11,600 lb) 8 255 kg (18,200 lb) Trailer 1500 Series 2WD Crew Cab Standard Box 5.3LV8 3.08 2 858 kg (6,300 lb) 5 443 kg (12,000 lb) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

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1500/2500/3500 Series Pickups – SAE J2807 Compliant Maximum Trailer Vehicle Axle Ratio Weight (c) GCWR (a) 5.3LV8 – Conventional Trailer 3.42 4 218 kg (9,300 lb) 6 804 kg (15,000 lb) 5.3LV8, 6-speed automatic 3.42 3 856 kg (8,500 lb) 6 804 kg (15,000 lb) transmission – Gooseneck/ Fifth-Wheel Trailer 5.3LV8, 8-speed automatic 3.42 3 674 kg (8,100 lb) 6 804 kg (15,000 lb) transmission – Gooseneck/ Fifth-Wheel Trailer 5.3LV8, 8-speed automatic 3.42 4 944 kg (10,900 lb) 7 575 kg (16,700 lb) transmission with Enhanced Towing Package – Conventional Trailer 5.3LV8, 8-speed automatic 3.42 4 808 kg (10,600 lb) 7 575 kg (16,700 lb) transmission with Enhanced Towing Package – Gooseneck/ Fifth-Wheel Trailer 5.3LV8 – Conventional Trailer 3.73 4 990 kg (11,000 lb) 7 575 kg (16,700 lb) 5.3LV8 – Gooseneck/Fifth-Wheel 3.73 4 853 kg (10,700 lb) 7 575 kg (16,700 lb) Trailer 6.2LV8 – Conventional Trailer 3.23 4 218 kg (9,300 lb) 6 804 kg (15,000 lb) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

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1500/2500/3500 Series Pickups – SAE J2807 Compliant Maximum Trailer Vehicle Axle Ratio Weight (c) GCWR (a) 6.2LV8 – Gooseneck/Fifth-Wheel 3.23 3 765 kg (8,300 lb) 6 804 kg (15,000 lb) Trailer 6.2LV8 – Conventional Trailer 3.42 5 398 kg (11,900 lb) 8 029 kg (17,700 lb) 6.2LV8 – Gooseneck/Fifth-Wheel 3.42 4 763 kg (10,500 lb) 8 029 kg (17,700 lb) Trailer 1500 Series 2WD Crew Cab Short Box (b) 4.3LV6 3.23 2 495 kg (5,500 lb) 4 990 kg (11,000 lb) 5.3LV8 3.08 2 903 kg (6,400 lb) 5 443 kg (12,000 lb) 5.3LV8, 6-speed automatic 3.42 4 264 kg (9,400 lb) 6 804 kg (15,000 lb) transmission 5.3LV8, 8-speed automatic 3.42 4 218 kg (9,300 lb) 6 804 kg (15,000 lb) transmission 5.3LV8, 8-speed automatic 3.42 4 990 kg (11,000 lb) 7 575 kg (16,700 lb) transmission with Enhanced Towing Package 5.3LV8 3.73 4 990 kg (11,000 lb) 7 575 kg (16,700 lb) 6.2LV8 3.23 4 218 kg (9,300 lb) 6 804 kg (15,000 lb) 6.2LV8 3.42 5 670 kg (12,500 lb) 8 255 kg (18,200 lb) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

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1500/2500/3500 Series Pickups – SAE J2807 Compliant Maximum Trailer Vehicle Axle Ratio Weight (c) GCWR (a) 1500 Series 2WD Regular Cab Long Box 4.3LV6 3.23 2 676 kg (5,900 lb) 4 990 kg (11,000 lb) 5.3LV8 – Conventional Trailer 3.08 3 084 kg (6,800 lb) 5 443 kg (12,000 lb) 5.3LV8 – Gooseneck/Fifth-Wheel 3.08 3 039 kg (6,700 lb) 5 443 kg (12,000 lb) Trailer 5.3LV8 – Conventional Trailer 3.42 4 445 kg (9,800 lb) 6 804 kg (15,000 lb) 5.3LV8 – Gooseneck/Fifth-Wheel 3.42 4 400 kg (9,700 lb) 6 804 kg (15,000 lb) Trailer 1500 Series 4WD Regular Cab Standard Box 4.3LV6 – Conventional Trailer 3.42 3 447 kg (7,600 lb) 5 806 kg (12,800 lb) 4.3LV6 – Gooseneck/Fifth-Wheel 3.42 3 402 kg (7,500 lb) 5 806 kg (12,800 lb) Trailer 5.3LV8 3.08 2 994 kg (6,600 lb) 5 443 kg (12,000 lb) 5.3LV8 3.42 3 901 kg (8,600 lb) 6 350 kg (14,000 lb) 1500 Series 4WD Double Cab Standard Box 4.3LV6 – Conventional Trailer 3.42 3 221 kg (7,100 lb) 5 806 kg (12,800 lb) 4.3LV6 – Gooseneck/Fifth Wheel 3.42 3 175 kg (7,000 lb) 5 806 kg (12,800 lb) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

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1500/2500/3500 Series Pickups – SAE J2807 Compliant Maximum Trailer Vehicle Axle Ratio Weight (c) GCWR (a) 5.3LV8 3.08 2 812 kg (6,200 lb) 5 443 kg (12,000 lb) 5.3LV8 – Gooseneck/Fifth Wheel 3.08 2 767 kg (6,100 lb) 5 443 kg (12,000 lb) 5.3LV8 – Conventional Trailer 3.42 4 173 kg (9,200 lb) 6 804 kg (15,000 lb) 5.3LV8 – Gooseneck/Fifth Wheel 3.42 4 082 kg (9,000 lb) 6 804 kg (15,000 lb) 5.3LV8, 8-speed automatic 3.42 4 899 kg (10,800 lb) 7 575 kg (16,700 lb) transmission with Enhanced Towing Package 5.3LV8 3.73 4 899 kg (10,800 lb) 7 575 kg (16,700 lb) 6.2LV8 – Conventional Trailer 3.23 4 128 kg (9,100 lb) 6 804 kg (15,000 lb) 6.2LV8 – Gooseneck/Fifth-Wheel 3.23 3 901 kg (8,600 lb) 6 804 kg (15,000 lb) Trailer 6.2LV8 – Conventional Trailer 3.42 5 352 kg (11,800 lb) 8 029 kg (17,700 lb) 6.2LV8 – Gooseneck/Fifth-Wheel 3.42 4 990 kg (11,000 lb) 8 029 kg (17,700 lb) Trailer 1500 Series 4WD Crew Cab Standard Box 5.3LV8 – Conventional Trailer 3.08 2 767 kg (6,100 lb) 5 443 kg (12,000 lb) 5.3LV8 – Gooseneck/Fifth-Wheel 3.08 2 722 kg (6,000 lb) 5 443 kg (12,000 lb) Trailer GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

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1500/2500/3500 Series Pickups – SAE J2807 Compliant Maximum Trailer Vehicle Axle Ratio Weight (c) GCWR (a) 5.3LV8 – Conventional Trailer 3.42 4 128 kg (9,100 lb) 6 804 kg (15,000 lb) 5.3LV8 – Gooseneck/Fifth-Wheel 3.42 3 674 kg (8,100 lb) 6 804 kg (15,000 lb) Trailer 5.3LV8 – 8-speed automatic 3.42 4 853 kg (10,700 lb) 7 575 kg (16,700 lb) transmission with Enhanced Towing Package - Conventional Trailer 5.3LV8, 8-speed automatic 3.42 4 627 kg (10,200 lb) 7 575 kg (16,700 lb) transmission with Enhanced Towing Package – Gooseneck/ Fifth Wheel Trailer 5.3LV8 – Conventional Trailer 3.73 4 853 kg (10,700 lb) 7 575 kg (16,700 lb) 5.3LV8 – Gooseneck/Fifth-Wheel 3.73 4 627 kg (10,200 lb) 7 575 kg (16,700 lb) Trailer 6.2LV8 – Conventional Trailer 3.23 4 082 kg (9,000 lb) 6 804 kg (15,000 lb) 6.2LV8 – Gooseneck/Fifth-Wheel 3.23 3 629 kg (8,000 lb) 6 804 kg (15,000 lb) Trailer 6.2LV8 – Conventional Trailer 3.42 5 307 kg (11,700 lb) 8 029 kg (17,700 lb) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

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1500/2500/3500 Series Pickups – SAE J2807 Compliant Maximum Trailer Vehicle Axle Ratio Weight (c) GCWR (a) 6.2LV8 – Gooseneck/Fifth-Wheel 3.42 4 627 kg (10,200 lb) 8 029 kg (17,700 lb) Trailer 1500 Series 4WD Crew Cab Short Box (b) 4.3LV6 3.42 3 175 kg (7,000 lb) 5 806 kg (12,800 lb) 5.3LV8 3.08 2 767 kg (6,100 lb) 5 443 kg (12,000 lb) 5.3LV8 3.42 4 128 kg (9,100 lb) 6 804 kg (15,000 lb) 5.3LV8, 8-speed automatic 3.42 4 853 kg (10,700 lb) 7 575 kg (16,700 lb) transmission with Enhanced Towing Package 5.3LV8 3.73 4 853 kg (10,700 lb) 7 575 kg (16,700 lb) 6.2LV8 3.23 4 128 kg (9,100 lb) 6 804 kg (15,000 lb) 6.2LV8 3.42 5 307 kg (11,700 lb) 8 029 kg (17,700 lb) 1500 Series 4WD Regular Cab Long Box 4.3LV6 – Conventional Trailer 3.42 3 357 kg (7,400 lb) 5 806 kg (12,800 lb) 4.3LV6 – Gooseneck/Fifth Wheel 3.42 3 311 kg (7,300 lb) 5 806 kg (12,800 lb) 5.3LV8 – Conventional Trailer 3.08 2 948 kg (6,500 lb) 5 443 kg (12,000 lb) 5.3LV8 – Gooseneck/Fifth Wheel 3.08 2 903 kg (6,400 lb) 5 443 kg (12,000 lb) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

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1500/2500/3500 Series Pickups – SAE J2807 Compliant Maximum Trailer Vehicle Axle Ratio Weight (c) GCWR (a) 5.3LV8 – Conventional Trailer 3.42 4 309 kg (9,500 lb) 6 804 kg (15,000 lb) 5.3LV8 – Gooseneck/Fifth Wheel 3.42 4 264 kg (9,400 lb) 6 804 kg (15,000 lb) 2500 Series 2WD Double Cab Standard Box 6.0LV8 3.73 4 536 kg (10,000 lb) 7 530 kg (16,600 lb) 6.0LV8 – Conventional Trailer 4.10 5 897 kg (13,000 lb) 9 571 kg (21,100 lb) 6.0LV8 – Fifth-Wheel Trailer 4.10 6 577 kg (14,500 lb) 9 571 kg (21,100 lb) 2500 Series 2WD Crew Cab Standard Box 6.0LV8 3.73 4 445 kg (9,800 lb) 7 530 kg (16,600 lb) 6.0LV8 – Conventional Trailer 4.10 5 897 kg (13,000 lb) 9 571 kg (21,100 lb) 6.0LV8 – Fifth-Wheel Trailer 4.10 6 486 kg (14,300 lb) 9 571 kg (21,100 lb) 2500 Series 2WD Regular Cab Long Box 6.0LV8 3.73 4 672 kg (10,300 lb) 7 530 kg (16,600 lb) 6.0LV8 (RPO UB7) 3.73 4 627 kg (10,200 lb) 7 530 kg (16,600 lb) 6.0LV8 – Conventional Trailer 4.10 6 577 kg (14,500 lb) 9 571 kg (21,100 lb) 6.0LV8 – Fifth-Wheel Trailer 4.10 6 713 kg (14,800 lb) 9 571 kg (21,100 lb) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

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1500/2500/3500 Series Pickups – SAE J2807 Compliant Maximum Trailer Vehicle Axle Ratio Weight (c) GCWR (a) 2500 Series 2WD Double Cab Long Box 6.0LV8 3.73 4 491 kg (9,900 lb) 7 530 kg (16,600 lb) 6.0LV8 – Conventional Trailer 4.10 6 532 kg (14,400 lb) 9 571 kg (21,100 lb) 6.0LV8 – Fifth-Wheel Trailer 4.10 6 532 kg (14,400 lb) 9 571 kg (21,100 lb) 2500 Series 2WD Crew Cab Long Box 6.0LV8 3.73 4 400 kg (9,700 lb) 7 530 kg (16,600 lb) 6.0LV8 – Conventional Trailer 4.10 6 486 kg (14,300 lb) 9 571 kg (21,100 lb) 6.0LV8 – Fifth-Wheel Trailer 4.10 6 441 kg (14,200 lb) 9 571 kg (21,100 lb) 2500 Series 4WD Double Cab Standard Box 6.0LV8 3.73 4 400 kg (9,700 lb) 7 530 kg (16,600 lb) 6.0LV8 – Conventional Trailer 4.10 5 897 kg (13,000 lb) 9 571 kg (21,100 lb) 6.0LV8 – Fifth-Wheel Trailer 4.10 6 441 kg (14,200 lb) 9 571 kg (21,100 lb) 2500 Series 4WD Crew Cab Standard Box 6.0LV8 3.73 4 309 kg (9,500 lb) 7 530 kg (16,600 lb) 6.0LV8 – Conventional Trailer 4.10 5 897 kg (13,000 lb) 9 571 kg (21,100 lb) 6.0LV8 – Fifth-Wheel Trailer 4.10 6 350 kg (14,000 lb) 9 571 kg (21,100 lb) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

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1500/2500/3500 Series Pickups – SAE J2807 Compliant Maximum Trailer Vehicle Axle Ratio Weight (c) GCWR (a) 2500 Series 4WD Regular Cab Long Box 6.0LV8 3.73 4 536 kg (10,000 lb) 7 530 kg (16,600 lb) 6.0LV8 – Conventional Trailer 4.10 6 577 kg (14,500 lb) 9 571 kg (21,100 lb) 6.0LV8 – Fifth-Wheel Trailer 4.10 6 577 kg (14,500 lb) 9 571 kg (21,100 lb) 2500 Series 4WD Double Cab Long Box 6.0LV8 3.73 4 354 kg (9,600 lb) 7 530 kg (16,600 lb) 6.0LV8 – Conventional Trailer 4.10 6 396 kg (14,100 lb) 9 571 kg (21,100 lb) 6.0LV8 – Fifth-Wheel Trailer 4.10 6 396 kg (14,100 lb) 9 571 kg (21,100 lb) 2500 Series 4WD Crew Cab Long Box 6.0LV8 3.73 4 264 kg (9,400 lb) 7 530 kg (16,600 lb) 6.0LV8 – Conventional Trailer 4.10 6 305 kg (13,900 lb) 9 571 kg (21,100 lb) 6.0LV8 – Fifth-Wheel Trailer 4.10 6 305 kg (13,900 lb) 9 571 kg (21,100 lb) 3500 Series 2WD Regular Cab Long Box 6.0LV8 (Single Rear Wheels) 3.73 4 581 kg (10,100 lb) 7 530 kg (16,600 lb) 6.0LV8 (Single Rear Wheels) 4.10 6 577 kg (14,500 lb) 9 571 kg (21,100 lb) 6.0LV8 (Dual Rear Wheels) 3.73 4 445 kg (9,800 lb) 7 530 kg (16,600 lb) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

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1500/2500/3500 Series Pickups – SAE J2807 Compliant Maximum Trailer Vehicle Axle Ratio Weight (c) GCWR (a) 6.0LV8 (Dual Rear Wheels) 4.10 6 486 kg (14,300 lb) 9 571 kg (21,100 lb) 3500 Series 2WD Crew Cab Standard Box 6.0LV8 3.73 4 400 kg (9,700 lb) 7 530 kg (16,600 lb) 6.0LV8 – Conventional Trailer 4.10 5 897 kg (13,000 lb) 9 571 kg (21,100 lb) 6.0LV8 Fifth-Wheel Trailer 4.10 6 441 kg (14,200 lb) 9 571 kg (21,100 lb) 3500 Series 2WD Double Cab Long Box 6.0LV8 (Single Rear Wheels) 3.73 4 400 kg (9,700 lb) 7 530 kg (16,600 lb) 6.0LV8 (Single Rear Wheels) 4.10 6 441 kg (14,200 lb) 9 571 kg (21,100 lb) 6.0LV8 (Dual Rear Wheels) 3.73 4 218 kg (9,300 lb) 7 530 kg (16,600 lb) Fifth-Wheel Trailer 6.0LV8 (Dual Rear Wheels) 4.10 6 260 kg (13,800 lb) 9 571 kg (21,100 lb) 3500 Series 2WD Crew Cab Long Box 6.0LV8 (Single Rear Wheels) 3.73 4 354 kg (9,600 lb) 7 530 kg (16,600 lb) 6.0LV8 (Single Rear Wheels) 4.10 6 396 kg (14,100 lb) 9 571 kg (21,100 lb) Conventional Trailer 6.0LV8 (Dual Rear Wheels) 3.73 4 173 kg (9,200 lb) 7 530 kg (16,600 lb) 6.0LV8 (Dual Rear Wheels) 4.10 6 214 kg (13,700 lb) 9 571 kg (21,100 lb) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 321

1500/2500/3500 Series Pickups – SAE J2807 Compliant Maximum Trailer Vehicle Axle Ratio Weight (c) GCWR (a) 3500 Series 4WD Regular Cab Long Box 6.0LV8 (Single Rear Wheels) 3.73 4 445 kg (9,800 lb) 7 530 kg (16,600 lb) 6.0LV8 (Single Rear Wheels) 4.10 6 486 kg (14,300 lb) 9 571 kg (21,100 lb) Conventional Trailer 6.0LV8 (Dual Rear Wheels) 3.73 4 264 kg (9,400 lb) 7 530 kg (16,600 lb) 6.0LV8 (Dual Rear Wheels) 4.10 6 305 kg (13,900 lb) 9 571 kg (21,100 lb) 3500 Series 4WD Crew Cab Standard Box 6.0LV8 3.73 4 264 kg (9,400 lb) 7 530 kg (16,600 lb) 6.0LV8 – Conventional Trailer 4.10 5 897 kg (13,000 lb) 9 571 kg (21,100 lb) 6.0LV8 – Fifth-Wheel Trailer 4.10 6 305 kg (13,900 lb) 9 571 kg (21,100 lb) 3500 Series 4WD Double Cab Long Box 6.0LV8 (Single Rear Wheels) 3.73 4 264 kg (9,400 lb) 7 530 kg (16,600 lb) 6.0LV8 (Single Rear Wheels) 4.10 6 305 kg (13,900 lb) 9 571 kg (21,100 lb) 6.0LV8 (Dual Rear Wheels) 3.73 4 082 kg (9,000 lb) 7 530 kg (16,600 lb) 6.0LV8 (Dual Rear Wheels) 4.10 6 123 kg (13,500 lb) 9 571 kg (21,100 lb) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

322 Driving and Operating

1500/2500/3500 Series Pickups – SAE J2807 Compliant Maximum Trailer Vehicle Axle Ratio Weight (c) GCWR (a) 3500 Series 4WD Crew Cab Long Box 6.0LV8 (Single Rear Wheels) 3.73 4 173 kg (9,200 lb) 7 530 kg (16,600 lb) 6.0LV8 (Single Rear Wheels) 4.10 6 214 kg (13,700 lb) 9 571 kg (21,100 lb) Conventional Trailer 6.0LV8 (Dual Rear Wheels) 3.73 3 992 kg (8,800 lb) 7 530 kg (16,600 lb) 6.0LV8 (Dual Rear Wheels) 4.10 6 033 kg (13,300 lb) 9 571 kg (21,100 lb) 3600 Series Chassis Cab 2WD/4WD 6.0LV8 3.73 (d) 7 530 kg (16,600 lb) 6.0LV8 4.10 (d) 9 571 kg (21,100 lb) (a) The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and trailer including any passengers, cargo, equipment, and conversions. The GCWR for the vehicle should not be exceeded. (b) This model is neither designed nor intended to tow fifth-wheel or gooseneck trailers. (c) For pickup box delete vehicles, choose an appropriate hitch and load the truck and trailer within the limits of GCWR, GVWR, and RGAWR. (d) Maximum Trailer Weight cannot be provided because total vehicle weight is unknown. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 323 Ask your dealer for trailering types, such as boat trailers, fall information or advice. outside of this range. Refer to the trailer owner’s manual for the Weight of the Trailer Tongue recommended trailer tongue weight. The tongue weight load (1) of any In all cases, do not exceed the trailer is very important because it is maximum loads for the vehicle also part of the vehicle weight. The series and hitch type. Gross Vehicle Weight (GVW) includes the curb weight of the vehicle, any cargo carried in it, and the people who will be riding in the vehicle as well as trailer tongue weight. Vehicle options, equipment, In general, trailer tongue weight (1) passengers, and cargo in the should be 10 15% and fifth-wheel vehicle reduce the amount of – or gooseneck kingpin weight should tongue weight the vehicle can carry, be 15 25% of the loaded trailer which will also reduce the trailer – weight (2). Some specific trailer weight the vehicle can tow. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

324 Driving and Operating

Maximum Tongue After loading the trailer, weigh the Vehicle Series Hitch Type Weight trailer and then the tongue, separately, to see if the weights are 1500 Weight-Carrying 318 kg (700 lb) proper. If they are not, adjustments 1500 Weight-Distributing 567 kg (1,250 lb) might be made by moving some items around in the trailer. 2500/3500 Weight-Carrying or 680 kg (1,500 lb) Standard Box Weight-Distributing If a cargo carrier is used in the trailer hitch receiver, choose a 2500/ Weight-Carrying or 907 kg (2,000 lb) carrier that positions the load as 3500 Long Box Weight-Distributing close to the vehicle as possible. 2500 Fifth-Wheel Gooseneck 1 361 kg (3,000 lb) Make sure the total weight, including the carrier, is no more than 3500 Single Rear Fifth-Wheel Gooseneck 1 814 kg (4,000 lb) half of the maximum allowable Wheels tongue weight for the vehicle or 3500 Dual Rear Fifth-Wheel Gooseneck 2 495 kg (5,500 lb) 227 kg (500 lb), whichever is less. Wheels

Do not exceed the maximum Trailer rating may be limited by the allowable tongue weight for the vehicle's ability to carry tongue vehicle. Choose the shortest hitch weight. Tongue or kingpin weight extension that will position the hitch cannot cause the vehicle to exceed ball closest to the vehicle. This will the GVWR (Gross Vehicle Weight help reduce the effect of trailer Rating) or the RGAWR (Rear Gross tongue weight on the rear axle. Axle Weight Rating). See “Total Weight on the Vehicle's Tires” later in this section. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 325 Total Weight on the Vehicle's trailer combination, fully loaded for If a step-bumper hitch will be used, Tires the trip, getting individual weights the bumper could be damaged in for each of these items. sharp turns. Make sure there Be sure the vehicle's tires are is ample room when turning to avoid inflated to the inflation pressures Towing Equipment contact between the trailer and the found on the Certification/Tire label bumper. on the center pillar or see Vehicle Hitches Load Limits 0 248. Make sure not to Consider using sway controls with exceed the GVWR limit for the The correct hitch equipment helps any trailer. Ask a trailering vehicle, or the RGAWR, with the tow maintain combination control. Many professional about sway controls or vehicle and trailer fully loaded for trailers can be towed with a refer to the trailer manufacturer's the trip including the weight of the weight-carrying hitch which simply recommendations and instructions. trailer tongue. If using a features a coupler latched to the weight-distributing hitch, make sure hitch ball, or a tow eye latched to a not to exceed the RGAWR before pintle hook. Other trailers may applying the weight distribution require a weight-distributing hitch spring bars. that uses spring bars to distribute the trailer tongue weight among the Weight of the Trailering tow vehicle and trailer axles. Combination Fifth-wheel and gooseneck hitches may also be used. See Weight of It is important that the combination “ the Trailer Tongue under Trailer of the tow vehicle and trailer does ” Towing 0 307 for rating limits with not exceed any of its weight various hitch types. ratings — GCWR, GVWR, RGAWR, Trailer Weight Rating, or Tongue Weight. The only way to be sure it is not exceeding any of these ratings is to weigh the tow vehicle and GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

326 Driving and Operating Weight-Distributing Hitch and Adjustment A weight-distributing hitch may be useful with some trailers. Use the following guidelines to determine if a weight-distributing hitch should be used. Weight-Distributing Hitch Vehicle Series Trailer Weight Usage Hitch Distribution 1500 Up to 3 175 kg (7,000 lb) Optional Refer to trailer manufacturer’s recommendation 1500 Over 3 175 kg (7,000 lb) Required 50% 2500/3500 Up to 9 080 kg (20,000 lb) Optional Refer to trailer manufacturer’s recommendation

1. Front of Vehicle Fifth-Wheel and Gooseneck 2. Body to Ground Distance Trailering When using a weight-distributing Fifth-wheel and gooseneck trailers hitch, measure distance (2) before can be used with many pickup coupling the trailer to the hitch ball. models. These trailers place a Measure the height again after the larger percentage of the weight trailer is coupled and adjust the (kingpin weight) on the tow vehicle spring bars so the distance (2) is as than conventional trailers. Make close as possible to halfway sure this weight does not cause the between the two measurements. vehicle to exceed GAWR or GVWR. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 327 Fifth-wheel or gooseneck kingpin becomes separated from the hitch. certain threshold. These weight should be 15 to 25% of the Instructions about safety chains requirements vary from state to trailer weight up to the maximum may be provided by the hitch state. amount specified in the trailering manufacturer or by the trailer Read and follow the instructions for chart for the vehicle. See “Weight of manufacturer. If the trailer is being the trailer brakes so they are the Trailer” under Trailer Towing towed with a factory-installed step 0 installed, adjusted, and maintained 307. bumper, safety chains may be properly. The hitch should be located in the attached to the attaching points on the bumper; otherwise, safety Do not tap into the vehicle's pickup bed so that its centerline is hydraulic brake system. over or slightly in front of the rear chains should be attached to holes axle. Take care that it is not so far on the trailer hitch platform. Always Auxiliary Battery forward that it will contact the back leave just enough slack so the The auxiliary battery provision can of the cab in sharp turns. This is combination can turn. Never allow be used to supply electrical power especially important for short box safety chains to drag on the ground. to additional equipment that may be pickups. Trailer pin box extensions Trailer Brakes added, such as a slide-in camper. and sliding fifth-wheel hitch If equipped, this relay will be on the assemblies can help this condition. A loaded trailer that weighs more driver side of the vehicle, next to the There should be at least 15 cm (6 in) than 900 kg (2,000 lb) must be underhood electrical center. of clearance between the top of the equipped with its own brake system, pickup box and the bottom of the with brakes working on all axles. Be sure to follow the proper trailer shelf that extends over Trailer braking equipment installation instructions included with the box. conforming to Canadian Standards any electrical equipment that is Association (CSA) requirement installed. Safety Chains CAN3-D313, or its equivalent, is Always attach chains between the recommended. vehicle and the trailer. Cross the State and local regulations may also safety chains under the tongue of require the trailer to have its own the trailer to help prevent the tongue braking system if loaded above a from contacting the road if it GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

328 Driving and Operating Use only a round, seven-wire qualified service center, see Caution connector with flat blade terminals “Electric Brake Control Wiring meeting SAE J2863 specifications Provisions” later in this section. Leaving electrical equipment on for proper electrical connectivity. for extended periods will drain the Heavy-Duty Trailer Wiring Harness battery. Always turn off electrical The seven-wire harness contains Package equipment when not in use and the following trailer circuits: do not use equipment that . Green/Violet: Right Stop/Turn exceeds the maximum amperage Signal rating of 30 amps for the auxiliary . Yellow/Gray: Left Stop/Turn battery provision. Signal . Gray/Brown: Taillamps/Parking Trailer Wiring Harness Lamps The vehicle is equipped with one of . White/Green: Back-up Lamps the following wiring harnesses for towing a trailer or hauling a slide-in . Red/Green: Battery Feed camper. . White: Ground . Blue: Electric Trailer Brake Basic Trailer Wiring For vehicles equipped with All regular, double cab, and crew The fuse for the electric trailer brake heavy-duty trailering, the harness cab pickups have a seven-wire circuit is installed in the underhood connector is mounted in the bumper. trailer towing harness. electrical center, but the wires may not be connected. They should be For vehicles not equipped with connected by your dealer or a heavy-duty trailering, the harness is qualified service center. To control secured to the vehicle's frame electric trailer brakes, a trailer brake behind the spare tire mount. The controller needs to be installed on harness requires the installation of a the vehicle by your dealer or a trailer connector, which is available through your dealer. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 329 . White: Ground . Gray/Brown: Taillamps/Parking . Blue: Electric Trailer Brake Lamps To help charge a remote . White/Green: Back-up Lamps (non-vehicle) battery, press the Tow/ . Red/Green: Battery Feed Haul Mode button at the end of the . White: Ground shift lever. If the trailer is too light for Tow/Haul Mode, turn on the . Blue: Electric Trailer Brake headlamps to help charge the If the vehicle is equipped with the battery. heavy-duty trailering option, see Camper/Fifth-Wheel Trailer Wiring “Heavy-Duty Trailer Wiring Harness Package Package” earlier in this section. For vehicles with the fifth wheel/ For vehicles without the fifth wheel/ Electric Brake Control Wiring gooseneck trailer package, the gooseneck trailer package, harness connector is mounted on Provisions seven-wire camper harness is under the inside of the pickup bed behind Wiring provisions for an electric the rear bumper, attached to the the rear wheel. trailer brake controller are included frame near the rear crossmember. with the vehicle as part of the trailer The seven-wire harness contains A connector must be added to the wiring package. The instrument the following trailer circuits: wiring harness that connects to the panel contains blunt cut wires above camper. . Green/Violet: Right Stop/Turn the parking brake assembly for the Signal The harness contains the following electric trailer brake controller. camper/trailer circuits: . Yellow/Gray: Left Stop/Turn The harness contains the following Signal . Green/Violet: Right Stop/Turn circuits: Signal . Gray/Brown: Taillamps/Parking . Blue: Electric Trailer Brakes Lamps . Yellow/Gray: Left Stop/Turn . Red/Black or Red/Blue: Signal . White/Green: Back-up Lamps Battery Feed . Red/Green: Battery Feed . White/Blue: Brake Apply Signal GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

330 Driving and Operating . Black: Ground . When pulling a heavy trailer or a Be sure to consult the aftermarket large or heavy load in busy parking lots where improved low electric brake controller owner’s manual to determine wire color speed control of the vehicle is coding of the electric trailer brake desired. controller. The wire colors on the Operating the vehicle in Tow/Haul brake controller may be different This indicator light on the instrument when lightly loaded or with no trailer from the vehicle. cluster comes on when the Tow/ at all will not cause damage. Haul Mode is on. The electric trailer brake controller However, there is no benefit to the should be installed by your dealer or Tow/Haul is a feature that assists selection of Tow/Haul when the a qualified service center. when pulling a heavy trailer or a vehicle is unloaded. Such a large or heavy load. See Tow/Haul selection when unloaded may result Tow/Haul Mode Mode 0 271. in unpleasant engine and transmission driving characteristics Tow/Haul is designed to be most and reduced fuel economy. Tow/ effective when the vehicle and Haul is recommended only when trailer combined weight is at least pulling a heavy trailer or a large or 75% of the vehicle's Gross heavy load. Combined Weight Rating (GCWR). See “Weight of the Trailer” under Integrated Trailer Brake Trailer Towing 0 307. Tow/Haul is Control System most useful under the following The vehicle may have an Integrated driving conditions: Trailer Brake Control (ITBC) system . When pulling a heavy trailer or a for use with electric trailer brakes or large or heavy load through most electric over hydraulic trailer rolling terrain. brakes. Pressing this button at the end of . When pulling a heavy trailer or a the shift lever turns on and off the large or heavy load in Tow/Haul Mode. stop-and-go traffic. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 331 If the vehicle’s brake, antilock brake, or StabiliTrak systems are not Warning (Continued) functioning properly, the ITBC system may not be fully functional system only with electric or or may not function at all. Make sure electric over hydraulic trailer all of these systems are fully brakes. This symbol is on the Trailer Brake operational to ensure full Control Panel on vehicles with an functionality of the ITBC system. Trailer Brake Control Panel ITBC system. The power output to The ITBC system is powered the trailer brakes is based on the through the vehicle's electrical amount of brake pressure being system. Turning the ignition off will applied by the vehicle’s brake also turn off the ITBC system. The system, and on the type of trailer ITBC system is fully functional only brakes detected. This available when the ignition is in ON/RUN. power output to the trailer brakes can be adjusted to a wide range of trailering situations. { Warning The ITBC system is integrated with Connecting a trailer that has an the vehicle’s brake, antilock brake, air brake system may result in and StabiliTrak systems. In trailering reduced or complete loss of trailer conditions that cause the vehicle’s braking. There may be an antilock brake or StabiliTrak increase in stopping distance or 1. Manual Trailer Brake Apply systems to activate, power sent to trailer instability which could Lever the trailer's brakes will be result in personal injury or automatically adjusted to minimize 2. Trailer Gain Adjustment damage to the vehicle, trailer, Buttons trailer wheel lock-up. This does not or other property. Use the ITBC imply that the trailer has StabiliTrak. The ITBC system has a control (Continued) panel on the instrument panel to the left of the steering column. See Instrument Panel 0 6. The control GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

332 Driving and Operating panel allows adjustment to the Each press and release of the . A trailer without electric brakes amount of output, referred to as gain buttons will then change the is connected (no DIC message Trailer Gain, available to the trailer Trailer Gain setting. will display). brakes and allows manual . Activate the Manual Trailer . A trailer with electric brakes has application of the trailer brakes. The Brake Apply Lever. become disconnected (a Trailer Brake Control Panel is used CHECK TRAILER WIRING along with the Trailer Brake Display TRAILER GAIN: This setting can be adjusted from 0.0 to 10.0 with either message will also display on Page on the Driver Information the DIC). Center (DIC) to adjust and display a trailer connected or disconnected. power output to the trailer brakes. To adjust the Trailer Gain, press one . There is a fault present in the of the Trailer Gain Adjustment wiring to the trailer brakes (a Trailer Brake DIC Display Page buttons. Press and hold a gain CHECK TRAILER WIRING The ITBC system displays button to continuously adjust the message will also display on messages in the DIC. Trailer Gain. To turn the output to the DIC). the trailer off, adjust the Trailer Gain . The ITBC system is not working The display page indicates Trailer setting to 0.0 (zero). Gain setting, power output to the due to a fault (a SERVICE trailer brakes, trailer connection, and TRAILER OUTPUT: This displays TRAILER BRAKE SYSTEM system operational status. anytime a trailer with electric brakes message will also display in is connected. Output to the trailer the DIC). To display the Trailer Brake Display brakes is based on the amount of Page, do any of the following: vehicle braking present and relative Manual Trailer Brake Apply . Scroll through the DIC menu to the Trailer Gain setting. Output is The Manual Trailer Brake Apply pages. displayed from 0 to 100% for each Lever is used to apply the trailer’s . Press a Trailer Gain button. gain setting. electric brakes independent of the If the Trailer Brake Display Page The Trailer Output will indicate vehicle’s brakes. Sliding the lever to the left will apply only the trailer is not currently displayed, press “------” on the Trailer Brake a Trailer Gain button to recall the Display Page whenever the brakes. Use this lever to adjust current Trailer Gain setting. following occur: Trailer Gain to properly adjust the power output to the trailer brakes. . No trailer is connected. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 333 The trailer's and the vehicle's brake traffic at about 32 to 40 km/h Other ITBC-Related DIC Messages lamps will come on when either (20 to 25 mph) and fully apply In addition to displaying TRAILER vehicle brakes or manual trailer the Manual Trailer Brake Apply GAIN and OUTPUT through the brakes are applied. Lever. DIC, trailer connection and ITBC Trailer Gain Adjustment Procedure Adjusting Trailer Gain at system status are displayed on speeds lower than 32 to the DIC. Trailer Gain should be set for a 40 km/h (20 to 25 mph) may specific trailering condition and must TRAILER CONNECTED: This result in an incorrect gain message will briefly display when a be adjusted anytime vehicle loading, setting. trailer loading, or road surface trailer with electric brakes is first conditions change. 2. Adjust the Trailer Gain, using connected to the vehicle. This the Trailer Gain Adjustment message will automatically turn off { Warning Buttons, to just below the point in about 10 seconds. This message of trailer wheel lock-up, can be acknowledged before it Trailer brakes that are indicated by trailer wheel automatically turns off. over-gained or under-gained may squeal or tire smoke when a CHECK TRAILER WIRING: This not stop the vehicle and the trailer trailer wheel locks. message will display if: as intended and can result in a Trailer wheel lock-up may not . The ITBC system first crash. Always follow the occur if towing a heavily loaded determines connection to a instructions to set the Trailer Gain trailer. In this case, adjust the trailer with electric brakes and for the proper trailer stopping Trailer Gain to the highest then the trailer harness becomes performance. allowable setting for the towing disconnected from the vehicle. condition. If the disconnect occurs while Use the following to adjust Trailer 3. Readjust Trailer Gain anytime the vehicle is stationary, this Gain for each towing condition: vehicle loading, trailer loading, message will automatically turn or road surface conditions off in about 30 seconds. This 1. Drive the vehicle with the trailer change or if trailer wheel attached on a level road message will also turn off if it is lock-up is noticed at any time acknowledged or if the trailer surface representative of the while towing. towing condition and free of harness is reconnected. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

334 Driving and Operating If the disconnect occurs while If the CHECK TRAILER A GM dealer may be able to the vehicle is moving, this WIRING message only diagnose and repair problems with message will continue until the reappears when connecting the the trailer. However, any diagnosis ignition is turned off. This trailer wiring harness to the and repair of the trailer is not message will also turn off if it is vehicle, the electrical fault is on covered under the vehicle warranty. acknowledged or if the trailer the trailer side. Contact your trailer dealer for harness is reconnected. SERVICE TRAILER BRAKE assistance with trailer repairs and . There is an electrical fault in the SYSTEM: This message will display trailer warranty information. wiring to the trailer brakes. This when there is a problem with the message will continue as long ITBC system. If this message Trailer Sway as there is an electrical fault in continues over multiple ignition Control (TSC) the trailer wiring. This message cycles, there is a problem with the Vehicles with StabiliTrak have a will also turn off if it is ITBC system. Have the vehicle Trailer Sway Control (TSC) feature. acknowledged. serviced. Trailer sway is unintended To determine if the electrical fault is If either the CHECK TRAILER side-to-side motion of a trailer while on the vehicle side or trailer side of WIRING or SERVICE TRAILER being towed. If the vehicle is towing the trailer wiring harness BRAKE SYSTEM message displays a trailer and the TSC detects that connection: while driving, the ITBC system may sway is increasing, the vehicle 1. Disconnect the trailer wiring not be fully functional or may not brakes are selectively applied at harness from the vehicle. function at all. When traffic each wheel, to help reduce conditions allow, carefully pull the excessive trailer sway. If the vehicle 2. Turn the ignition off. vehicle over to the side of the road is equipped with the Integrated 3. Wait 10 seconds, then turn the and turn the ignition off. Check the Trailer Brake Control (ITBC) system, ignition back to RUN. wiring connection to the trailer and and the trailer has the electric turn the ignition back on. If either of actuated brake system, StabiliTrak 4. If the CHECK TRAILER these messages continues, either may also apply the trailer brakes. WIRING message reappears, the vehicle or trailer needs service. the electrical fault is on the vehicle side. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 335 If TSC is enabled, the Traction Adding non-dealer accessories can Control System (TCS)/StabiliTrak affect the vehicle performance. See { Warning warning light will flash on the Accessories and Modifications instrument cluster. Vehicle speed 0 343. Use of electronic trailer sway must be reduced. If trailer sway control devices could result in continues, StabiliTrak can reduce Electronic Trailer Sway Control reduced trailer brake engine torque to help slow the Devices performance, loss of trailer vehicle. See Traction Control/ Some trailers may come equipped brakes, or other malfunctions, and Electronic Stability Control 0 282. with an electronic device designed could cause a crash. You or to reduce or control trailer sway. others could be injured or killed. { Warning Aftermarket equipment Before using one of these manufacturers also offer similar devices: Even if the vehicle is equipped devices that connect to the wiring . Ask the device or trailer with TSC, trailer sway could result between the trailer and the vehicle. manufacturer if the device in loss of control and the vehicle These devices may interfere with has been thoroughly tested could crash. If excessive trailer the vehicle’s trailer brake or other for compatibility with the sway is detected, slow down to a systems, including integrated make, model, and year of safe speed. Check the trailer and anti-sway systems, if equipped. the vehicle as well as vehicle to help correct possible Messages related to trailer optional equipment installed causes. These could include an connections or trailer brakes could on the vehicle. appear on the Driver Information improperly or overloaded trailer, . Before driving on the open unrestrained cargo, improper Center (DIC). The effect that these devices may have on vehicle roads, check that the trailer trailer hitch configuration, brakes are working properly. excessive vehicle-trailer speed, handling or trailer brake performance is unknown. Drive the vehicle with the or improperly inflated or incorrect trailer attached on a level vehicle or trailer tires. See Towing road surface that is free of Equipment 0 325 for trailer traffic at about 32-40 km/h ratings and hitch setup (Continued) recommendations. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

336 Driving and Operating

Warning (Continued) Conversions and Caution Add-Ons (20-25 mph) and fully apply Some electrical equipment can the manual trailer brake Add-On Electrical damage the vehicle or cause apply lever. Also check that components to not work and the trailer brake lamps and Equipment would not be covered by the other lamps are functioning vehicle warranty. Always check correctly. { Warning with your dealer before adding . If the trailer brakes are not electrical equipment. operating properly at any The Data Link Connector (DLC) is used for vehicle service time, or if a DIC message Add-on equipment can drain the indicates problems with the and Emission Inspection/ Maintenance testing. See vehicle's 12-volt battery, even if the trailer connections or trailer vehicle is not operating. brakes, carefully pull the Malfunction Indicator Lamp vehicle over to the side of (Check Engine Light) 0 150. The vehicle has an airbag system. the road when traffic A device connected to the DLC — Before attempting to add anything conditions allow. such as an aftermarket fleet or electrical to the vehicle, see driver-behavior tracking device — Servicing the Airbag-Equipped 0 may interfere with vehicle Vehicle 90 and Adding Equipment systems. This could affect vehicle to the Airbag-Equipped Vehicle 0 operation and cause a crash. 90. Such devices may also access For information on wiring auxiliary information stored in the vehicle’s switches, see www.gmupfitter.com systems. or contact your dealer. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 337 Adding a Snow Plow or much if there is other equipment Caution (Continued) already adding to the weight of the Similar Equipment vehicle. installed. The vehicle can be Caution damaged if either the front or rear To safely carry a snow plow on the axle ratings or the Gross Vehicle vehicle: Do not exceed 72 km/h (45 mph) Weight Rating (GVWR) are . Follow all aftermarket snow plow with a snow plow mounted to the exceeded. manufacturer’s instructions for vehicle. The vehicle could the operation and transportation of the snow plow. overheat and be damaged. The plow the vehicle can carry depends on many things, such as: . With a snow plow attached, the engine coolant temperature Before installing a snow plow on the . The options the vehicle came vehicle, follow these guidelines: with, and the weight of those gauge may show a higher temperature than while driving options. Caution without one. The snow plow . The weight and number of could block the airflow to the If the vehicle does not have the passengers to be carried. radiator. This could be more snow plow prep package, RPO . The weight of items added to the noticeable as vehicle speed VYU, adding a plow can damage vehicle, like a tool box or increases. At speeds above the vehicle, and the repairs would truck cap. 72 km (45 mph), this may cause the engine coolant to overheat. not be covered by the vehicle . The total weight of any warranty. Unless the vehicle was additional cargo to be carried. . To increase the airflow, move the built to carry a snow plow, do not snow plow blade postion. For example, if the snow plow add one to the vehicle. If the . If driving more than 24 km vehicle has RPO VYU, then the weighs 318 kg (700 lb), the total weight of all occupants and cargo (15 mi), angle the plow blade payload the vehicle can carry will inside the cab should not exceed position. be reduced when a snow plow is 135 kg (300 lb). This means that you (Continued) may only be able to carry one passenger. Even this may be too GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

338 Driving and Operating . Make sure the weight on the Front axle reserve capacity is the front and rear axles does not difference between the Gross Axle exceed the axle rating for each. Weight Rating (GAWR) and the front . For the front axle, if more cargo axle weight of the vehicle with full or passengers must be carried, fuel and passengers. This is the appropriate counter ballast must amount of weight that can be added be installed rear of the rear axle. to the front axle before reaching the Counter ballast must be properly front GAWR. secured so it will not move during driving. . Rear ballast may be required to ensure a proper front and rear Canada weight distribution ratio, even though the actual weight at the The front axle reserve capacity for front axle may be less than the the vehicle is in the lower right front axle rating. corner of the Certification/Tire label. . The snow plow manufacturer or To calculate the amount of weight installer can assist in any front accessory, such as a snow determining the amount of rear plow, is adding to the front axle, use this formula: ballast required, to help make United States sure the snow plow/vehicle combination does not exceed the GVW rating, the front and rear axle ratings, and the front and rear weight distribution ratio. . The total vehicle must not exceed the GVW rating. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Driving and Operating 339 W.B. = 305 cm (10 ft) Warning (Continued) (W x (A + W.B.)/W.B. = (318 x (122 + 305))/305 = 445 kg enough weight on the rear axle to (980 lb) have proper braking performance. This means if the front axle reserve If the brakes cannot work capacity is more than 445 kg properly, the vehice could crash. (980 lb), the snow plow could be Always follow the snow plow added without exceeding the manufacturer or installer's front GAWR. recommendation for rear ballast to ensure a proper front and rear Heavier equipment can be added on the front of the vehicle if less cargo weight distribution ratio. Maintaining a proper front and (W x (A + W.B.)) /W.B.= Weight the or fewer passengers are carried, rear weight distribution ratio is accessory is adding to the or by positioning cargo toward the front axle. rear. This reduces the load on the necessary to provide proper front. However, the front GAWR, braking performance. Where: rear GAWR, and Gross Vehicle W = Weight of added accessory Weight Rating (GVWR) must never Total vehicle reserve capacity is the A = Distance that the accessory be exceeded. is in front of the front axle difference between the GVWR and W.B. = Vehicle Wheelbase the weight of the truck with full fuel { Warning and passengers. It is the amount of For example, adding a 318 kg weight that can be added to the (700 lb) snow plow actually adds On some vehicles that have vehicle before reaching the GVWR. more than 318 kg (700 lb) to the certain front mounted equipment, Reserve capacity numbers are front axle. Using the formula, if the such as a snow plow, it may be intended as a guide when selecting snow plow is 122 cm (4 ft) in front of possible to load the front axle to the amount of equipment or cargo the front axle and the wheelbase is the front Gross Axle Weight the truck can carry. If unsure of the 305 cm (10 ft), then: Rating (GAWR) but not have vehicle's front, rear, or total weight, W = 318 kg (700 lb) A = 122 cm (4 ft) (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

340 Driving and Operating go to a weigh station and weigh the Pickup Conversion to vehicle. Your dealer can also help with this. Chassis Cab The total vehicle reserve capacity We are aware that some vehicle for the vehicle is in the lower right owners might consider having the corner of the Certification/Tire label pickup box removed and a as shown previously. commercial or recreational body installed. Owners should be aware See your dealer for additional that, as manufactured, there are advice and information about using differences between a chassis cab a snow plow on the vehicle. Also, and a pickup with the box removed see Vehicle Load Limits 0 248. which could affect vehicle safety. Emergency Roof Lamp The components necessary to adapt a pickup to permit its safe use with Provisions a specialized body should be Vehicles with the RPO VYU snow installed by the body builder. plow prep package also have an emergency roof lamp provision package, RPO TRW. Wiring for the emergency roof lamp is provided above the overhead console. See Auxiliary Roof-Mounted Lamp 0 182 for switch location. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 341 Power Steering Fluid (1500 High Intensity Discharge (HID) Vehicle Care Series) ...... 365 Lighting ...... 378 Power Steering Fluid (2500/ LED Lighting ...... 378 3500 Series) ...... 365 Taillamps, Turn Signal, General Information Washer Fluid ...... 366 Stoplamps, and Back-Up General Information ...... 342 Brakes ...... 367 Lamps ...... 378 California Proposition Brake Fluid ...... 368 Center High-Mounted 65 Warning ...... 343 Battery - North America ...... 369 Stoplamp (CHMSL) and California Perchlorate Four-Wheel Drive ...... 370 Cargo Lamp ...... 380 Materials Requirements . . . . . 343 Front Axle ...... 370 Accessories and Rear Axle ...... 371 Electrical System Modifications ...... 343 Noise Control System ...... 373 High Voltage Devices and Vehicle Checks Starter Switch Check ...... 374 Wiring ...... 380 Automatic Transmission Shift Electrical System Overload . . . 380 Doing Your Own Fuses and Circuit Breakers . . . 381 Service Work ...... 344 Lock Control Function Check ...... 374 Engine Compartment Fuse Hood ...... 344 Block ...... 381 Engine Compartment Ignition Transmission Lock Check ...... 374 Instrument Panel Fuse Block Overview ...... 345 (Right) ...... 385 Engine Oil ...... 350 Park Brake and P (Park) Mechanism Check ...... 375 Instrument Panel Fuse Engine Oil Life System ...... 353 Block (Left) ...... 386 Automatic Transmission Fluid Wiper Blade Replacement . . . . 375 (6-Speed Transmission) . . . . . 354 Windshield Replacement . . . . . 376 Wheels and Tires Automatic Transmission Fluid Gas Strut(s) ...... 376 Tires ...... 389 (8-Speed Transmission) . . . . . 357 Headlamp Aiming All-Season Tires ...... 389 Engine Air Cleaner/Filter ...... 358 Headlamp Aiming ...... 377 Winter Tires ...... 390 Cooling System ...... 359 Low-Profile Tires ...... 390 Engine Overheating ...... 363 Bulb Replacement All-Terrain Tires ...... 391 Overheated Engine Protection Bulb Replacement ...... 378 Tire Sidewall Labeling ...... 391 Operating Mode ...... 364 Halogen Bulbs ...... 378 Tire Designations ...... 393 Engine Fan ...... 365 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

342 Vehicle Care Tire Terminology and Towing the Vehicle General Information Definitions ...... 395 Towing the Vehicle ...... 430 Tire Pressure ...... 397 Recreational Vehicle For service and parts needs, visit Tire Pressure for High-Speed Towing ...... 430 your dealer. You will receive Operation ...... 399 genuine GM parts and GM-trained Tire Pressure Monitor Appearance Care and supported service people. System ...... 399 Exterior Care ...... 435 Interior Care ...... 441 Genuine GM parts have one of Tire Pressure Monitor these marks: Operation ...... 400 Floor Mats ...... 444 Tire Inspection ...... 404 Tire Rotation ...... 405 When It Is Time for New Tires ...... 407 Buying New Tires ...... 408 Different Size Tires and Wheels ...... 409 Uniform Tire Quality Grading ...... 410 Wheel Alignment and Tire Balance ...... 411 Wheel Replacement ...... 412 Tire Chains ...... 413 If a Tire Goes Flat ...... 413 Tire Changing ...... 415 Full-Size Spare Tire ...... 425 Jump Starting Jump Starting - North America ...... 426 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 343 California Proposition California Perchlorate Damage to suspension components caused by modifying vehicle height 65 Warning Materials Requirements outside of factory settings will not be Certain types of automotive covered by the vehicle warranty. { Warning applications, such as airbag Damage to vehicle components initiators, seat belt pretensioners, Most motor vehicles, including resulting from modifications or the and lithium batteries contained in installation or use of non-GM this one, as well as many of its Remote Keyless Entry transmitters, service parts and fluids, contain certified parts, including control may contain perchlorate materials. module or software modifications, is and/or emit chemicals known to Special handling may be necessary. not covered under the terms of the the State of California to cause For additional information, see vehicle warranty and may affect cancer and birth defects or other www.dtsc.ca.gov/hazardouswaste/ remaining warranty coverage for reproductive harm. Engine perchlorate. affected parts. exhaust, many parts and systems, many fluids, and some Accessories and GM Accessories are designed to component wear by-products Modifications complement and function with other contain and/or emit these systems on the vehicle. See your chemicals. For more information Adding non-dealer accessories or dealer to accessorize the vehicle using genuine GM Accessories go to www.P65Warnings.ca.gov/ making modifications to the vehicle installed by a dealer technician. passenger-vehicle. can affect vehicle performance and safety, including such things as Also, see Adding Equipment to the airbags, braking, stability, ride and Airbag-Equipped Vehicle 0 90. See Battery - North America 0 369 handling, emissions systems, and Jump Starting - North America aerodynamics, durability, and 0 426 and the back cover. electronic systems like antilock brakes, traction control, and stability control. These accessories or modifications could even cause malfunction or damage not covered by the vehicle warranty. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

344 Vehicle Care Vehicle Checks Keep a record with all parts receipts and list the mileage and the date of any service work performed. See Doing Your Own Maintenance Records 0 459. Service Work Caution { Warning Even small amounts of It can be dangerous to work on contamination can cause damage your vehicle if you do not have to vehicle systems. Do not allow the proper knowledge, service contaminants to contact the fluids, manual, tools, or parts. Always reservoir caps, or dipsticks. follow owner’s manual procedures 2. Go to the front of the vehicle to and consult the service manual Hood find the secondary hood for your vehicle before doing any release. The handle is under service work. To open the hood: the front edge of the hood near the center. Push the handle to If doing some of your own service the right and at the same time work, use the proper service raise the hood. manual. It tells you much more Before closing the hood, be sure all about how to service the vehicle the filler caps are on properly. Then than this manual can. To order the bring the hood from full open to proper service manual, see Service within 15 cm (6 in) from the closed Publications Ordering Information 1. Pull the handle with this symbol position, pause, and push the front 0 474. on it. It is inside the vehicle center of the hood with a swift, firm under the steering wheel. This vehicle has an airbag system. motion to fully close the hood. Before attempting to do your own service work, see Servicing the Airbag-Equipped Vehicle 0 90. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 345 Engine Compartment Overview

4.3L V6 Engine GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

346 Vehicle Care 1. Positive (+) Terminal. See 6. Remote Negative (–) Location. 10. Brake Fluid Reservoir. See Jump Starting - North America See Jump Starting - North Brake Fluid 0 368. 0 0 426. America 426. 11. Windshield Washer Fluid 2. Battery - North America 0 369. 7. Engine Cooling Fans (Out of Reservoir. See “Adding Washer View). See Cooling System Fluid” under Washer Fluid 3. Coolant Surge Tank and 0 0 Pressure Cap. See Cooling 359. 366. System 0 359. 8. Engine Oil Fill Cap. See “When 12. Engine Compartment Fuse 0 4. Engine Air Cleaner/Filter 0 358. to Add Engine Oil” under Block 381. Engine Oil 0 350. 5. Automatic Transmission Dipstick (If Equipped). See 9. Engine Oil Dipstick. See Checking Engine Oil under “How to Check Automatic “ ” Engine Oil 0 350. Transmission Fluid” under Automatic Transmission Fluid (6-Speed Transmission) 0 354 or Automatic Transmission Fluid (8-Speed Transmission) 0 357. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 347

5.3L V8 Engine Shown, 6.2L V8 Engine Similar GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

348 Vehicle Care 1. Positive (+) Terminal. See 6. Remote Negative (–) Location 10. Windshield Washer Fluid Jump Starting - North America (Out of View). See Jump Reservoir. See “Adding Washer 0 426. Starting - North America 0 426. Fluid” under Washer Fluid 0 2. Battery - North America 0 369. 7. Engine Cooling Fans (Out of 366. View). See Cooling System 11. Brake Fluid Reservoir. See 3. Coolant Surge Tank and 0 0 Pressure Cap. See Cooling 359. Brake Fluid 368. System 0 359. 8. Engine Oil Fill Cap. See “When 12. Engine Compartment Fuse 0 4. Engine Air Cleaner/Filter 0 358. to Add Engine Oil” under Block 381. Engine Oil 0 350. 5. Automatic Transmission Dipstick (If Equipped). See 9. Engine Oil Dipstick. See Checking Engine Oil under “How to Check Automatic “ ” Engine Oil 0 350. Transmission Fluid” under Automatic Transmission Fluid (6-Speed Transmission) 0 354 or Automatic Transmission Fluid (8-Speed Transmission) 0 357. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 349

6.0L V8 Engine GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

350 Vehicle Care 1. Positive (+) Terminal. See 9. Remote Negative (–) Location. Engine Oil Jump Starting - North America See Jump Starting - North 0 426. America 0 426. For diesel engine vehicles, see Engine Oil in the Duramax diesel 0 “ ” 2. Battery - North America 369. 10. Power Steering Fluid supplement. 3. Coolant Surge Tank and Reservoir. See Power Steering Fluid (1500 Series) 0 365 or To ensure proper engine Pressure Cap. See Cooling performance and long life, careful System 0 359. Power Steering Fluid (2500/ 3500 Series) 0 365. attention must be paid to engine oil. 4. Engine Air Cleaner/Filter 0 358. Following these simple, but 11. Windshield Washer Fluid important steps will help protect 5. Automatic Transmission Reservoir. See “Adding Washer your investment: Dipstick (If Equipped). See Fluid” under Washer Fluid “How to Check Automatic 0 366. . Use engine oil approved to the Transmission Fluid” under proper specification and of the 12. Brake Fluid Reservoir. See proper viscosity grade. See Automatic Transmission Fluid 0 (6-Speed Transmission) 0 354 Brake Fluid 368. “Selecting the Right Engine Oil” or Automatic Transmission 13. Auxiliary Battery (If Equipped). in this section. Fluid (8-Speed Transmission) See Battery - North America . Check the engine oil level 0 0 357. 369. regularly and maintain the 6. Engine Oil Dipstick. See 14. Engine Compartment Fuse proper oil level. See “Checking “Checking Engine Oil” under Block 0 381. Engine Oil” and “When to Add 0 Engine Oil in this section. Engine Oil 350. If the vehicle has a diesel engine ” 7. Engine Oil Fill Cap. See “When and/or an Allison Transmission, see . Change the engine oil at the to Add Engine Oil” under the Duramax diesel supplement. appropriate time. See Engine Oil 0 Life System 0 353. Engine Oil 350. For an eAssist vehicle, see the 8. Engine Cooling Fan (Out of Silverado/Sierra supplement. . Always dispose of engine oil View). See Cooling System properly. See “What to Do with 0 359. Used Oil” in this section. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 351 Checking Engine Oil checking a cold engine prior to starting. Remove the dipstick Check the engine oil level regularly, and check the level. every 650 km (400 mi), especially prior to a long trip. The engine oil . If unable to wait two hours, the dipstick handle is a loop. See engine must be off for at least Engine Compartment Overview 15 minutes if the engine is 0 345 for the location. warm, or at least 30 minutes if the engine is not warm. Pull out the dipstick, wipe it with a clean { Warning V8 Engines paper towel or cloth, then push it The engine oil dipstick handle back in all the way. Remove it If the oil is below the cross-hatched may be hot; it could burn you. again, keeping the tip down, and area at the tip of the dipstick and Use a towel or glove to touch the check the level. the engine has been off for at least dipstick handle. 15 minutes, add 1 L (1 qt) of the When to Add Engine Oil recommended oil and then recheck the level. See “Selecting the Right If a low oil Driver Information Center Engine Oil” later in this section for (DIC) message displays, check the an explanation of what kind of oil to oil level. use. For engine oil crankcase Follow these guidelines: capacity, see Capacities and Specifications 0 461. . To get an accurate reading, park the vehicle on level ground. V6 Engine Check the engine oil level after Caution the engine has been off for at Do not add too much oil. Oil least two hours. Checking the levels above or below the engine oil level on steep grades acceptable operating range or too soon after engine shutoff shown on the dipstick are harmful can result in incorrect readings. Accuracy improves when (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

352 Vehicle Care Selecting the Right Engine Oil Viscosity Grade Caution (Continued) Selecting the right engine oil For the 5.3L and 6.2L V8 engines, to the engine. If you find that you depends on both the proper oil use SAE 0W-20 viscosity grade have an oil level above the specification and viscosity grade. engine oil operating range, i.e., the engine See Recommended Fluids and For the 4.3L V6 and 6.0L 0 has so much oil that the oil level Lubricants 456. V8 engines, use SAE 5W-30 gets above the cross-hatched Specification viscosity grade engine oil. Cold area that shows the proper Temperature Operation: In an area operating range, the engine could Use full synthetic engine oils that of extreme cold, where the be damaged. You should drain meet the dexos1 specification. temperature falls below −29 °C Engine oils that have been out the excess oil or limit driving (−20 °F), an SAE 0W-30 oil may be approved by GM as meeting the of the vehicle and seek a service used in the 4.3L or 6.0L engine. An dexos1 specification are marked oil of this viscosity grade will provide professional to remove the with the dexos1 approved logo. excess amount of oil. easier cold starting for the engine at extremely low temperatures.

See Engine Compartment Overview When selecting an oil of the 0 345 for the location of the engine appropriate viscosity grade, it is oil fill cap. recommended to select an oil of the correct specification. See Add enough oil to put the level “Specification” earlier in this section. somewhere in the proper operating range. Push the dipstick all the way back in when through. Caution Failure to use the recommended engine oil or equivalent can result in engine damage not covered by the vehicle warranty. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 353 Engine Oil Additives/Engine Used oil can be a threat to the indicate that an oil change is Oil Flushes environment. If you change your necessary. Change the oil as soon own oil, be sure to drain all the oil as possible within the next 1 000 km Do not add anything to the oil. The from the filter before disposal. Never (600 mi). It is possible that, if driving recommended oils meeting the dispose of oil by putting it in the under the best conditions, the oil life dexos1 specification are all that is trash or pouring it on the ground, system might indicate that an oil needed for good performance and into sewers, or into streams or change is not necessary for up to a engine protection. bodies of water. Recycle it by taking year. The engine oil and filter must Engine oil system flushes are not it to a place that collects used oil. be changed at least once a year recommended and could cause and, at this time, the system must engine damage not covered by the Engine Oil Life System be reset. For vehicles without the vehicle warranty. CHANGE ENGINE OIL SOON When to Change Engine Oil message, an oil change is needed What to Do with Used Oil This vehicle has a computer system when the OIL LIFE REMAINING Used engine oil contains certain that indicates when to change the percentage is near 0%. Your dealer elements that can be unhealthy for engine oil and filter. This is based has trained service people who will your skin and could even cause on a combination of factors which perform this work and reset the cancer. Do not let used oil stay on include engine revolutions, engine system. It is also important to check your skin for very long. Clean your temperature, and miles driven. the oil regularly over the course of skin and nails with soap and water, Based on driving conditions, the an oil drain interval and keep it at or a good hand cleaner. Wash or mileage at which an oil change is the proper level. properly dispose of clothing or rags indicated can vary considerably. For If the system is ever reset containing used engine oil. See the the oil life system to work properly, accidentally, the oil must be manufacturer's warnings about the the system must be reset every time changed at 5 000 km (3,000 mi) use and disposal of oil products. the oil is changed. since the last oil change. On some vehicles, when the system Remember to reset the oil life has calculated that oil life has been system whenever the oil is changed. diminished, a CHANGE ENGINE OIL SOON message comes on to GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

354 Vehicle Care How to Reset the Engine Oil The oil life system can also be reset Automatic Transmission Life System as follows: Fluid (6-Speed Reset the system whenever the 1. Display the OIL LIFE Transmission) engine oil is changed so that the REMAINING on the DIC. system can calculate the next See Driver Information Center When to Check and Change engine oil change. Always reset the (DIC) (Uplevel and Denali Automatic Transmission Fluid engine oil life to 100% after every oil Cluster) 0 160 or Driver It is usually not necessary to check change. It will not reset itself. To Information Center (DIC) (Base the transmission fluid level. The only reset the engine oil life system: Level Cluster) 0 158. reason for fluid loss is a 1. Display the OIL LIFE 2. Fully press the accelerator transmission leak or overheated REMAINING on the DIC. If the pedal slowly three times within transmission. If a small leak is vehicle does not have DIC five seconds. suspected, then use the following buttons, the vehicle must be in 3. Display the OIL LIFE checking procedures to check the P (Park) to access this display. REMAINING on the DIC. If the fluid level. However, if there is a See Driver Information Center display shows 100%, the large leak, then it may be necessary (DIC) (Uplevel and Denali system is reset. to have the vehicle towed to a Cluster) 0 160 or Driver dealer service department and have Information Center (DIC) (Base If the vehicle has a CHANGE it repaired before driving the vehicle Level Cluster) 0 158. ENGINE OIL SOON message and it further. comes back on when the vehicle is 2. Press and hold V, or the trip started and/or the OIL LIFE odometer reset stem if the REMAINING is near 0%, the engine Caution vehicle does not have DIC oil life system has not been reset. Use of the incorrect automatic buttons, for several seconds. Repeat the procedure. transmission fluid may damage The oil life will change to 100%. the vehicle, and the damage may not be covered by the vehicle warranty. Always use the (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 355 5. Keep the engine running and Caution (Continued) Caution (Continued) check the transmission fluid temperature on the Driver automatic transmission fluid listed transmission to overheat. Be sure Information Center (DIC). in Recommended Fluids and to get an accurate reading if See Driver Information Center 0 Lubricants 456. checking the transmission fluid. (DIC) (Uplevel and Denali Cluster) 0 160 or Driver Change the fluid and filter at the Before checking the fluid level, Information Center (DIC) (Base scheduled maintenance intervals prepare the vehicle: Level Cluster) 0 158. listed in Maintenance Schedule 6. Using the transmission fluid 0 1. Start the engine and park the 448. Be sure to use the vehicle on a level surface. temperature reading, determine transmission fluid listed in Keep the engine running. and perform the appropriate Recommended Fluids and check procedure. If the Lubricants 0 456. 2. Apply the parking brake and transmission fluid temperature place the shift lever in P (Park). How to Check Automatic reading is not within the Transmission Fluid 3. With your foot on the brake required temperature ranges, pedal, move the shift lever allow the vehicle to cool, through each gear range, or operate the vehicle until the Caution pausing for about appropriate transmission fluid three seconds in each range. temperature is reached. Too much or too little fluid can Then, move the shift lever back Cold Check Procedure damage the transmission. Too to P (Park). much can mean that some of the Use this procedure only as a 4. Allow the engine to idle (500 fluid could come out and fall on – reference to determine if the 800 rpm) for at least hot engine parts or exhaust transmission has enough fluid to be one minute. Slowly release the system parts, starting a fire. Too operated safely until a hot check brake pedal. little fluid could cause the procedure can be made. The hot (Continued) check procedure is the most accurate method to check the fluid level. Perform the hot check GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

356 Vehicle Care procedure at the first opportunity. 4. Check both sides of the 7. If the fluid level is in the Use this cold check procedure to dipstick and read the lower acceptable range, push the check fluid level when the level. Repeat the check dipstick back in all the way, transmission temperature is procedure to verify the reading. then flip the handle down to between 27 °C and 32 °C (80 °F and lock the dipstick in place. 90 °F). Hot Check Procedure Use this procedure to check the transmission fluid level when the transmission fluid temperature is between 71 °C and 93 °C (160 °F and 200 °F). 5. If the fluid level is below the COLD check band, add only The hot check is the most accurate 1. Locate the transmission method to check the fluid level. The dipstick at the rear of the enough fluid as necessary to bring the level into the COLD hot check should be performed at engine compartment, on the the first opportunity in order to verify passenger side of the vehicle. band. It does not take much fluid, generally less than 0.5 L the cold check. The fluid level rises See Engine Compartment (1 pt). Do not overfill. as fluid temperature increases, so it Overview 0 345. is important to ensure the 6. Perform a hot check at the first transmission temperature is within 2. Flip the handle up, then pull out opportunity after the range. the dipstick and wipe it with a transmission reaches a normal clean rag or paper towel. operating temperature between 3. Install the dipstick by pushing it 71 °C to 93 °C (160 °F to back in all the way; wait 200 °F). three seconds, and then pull it back out again. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 357 1. Locate the transmission 5. Safe operating level is within Automatic Transmission dipstick at the rear of the the HOT cross hatch band on engine compartment, on the the dipstick. If the fluid level is Fluid (8-Speed passenger side of the vehicle. not within the HOT band, and Transmission) the transmission temperature is See Engine Compartment When to Check and Change Overview 0 345. between 71 °C and 93 °C (160 °F and 200 °F), add or Automatic Transmission Fluid 2. Flip the handle up, then pull out drain fluid as necessary to It is usually not necessary to check the dipstick and wipe it with a bring the level into the HOT the transmission fluid level. The only clean rag or paper towel. band. If the fluid level is low, reason for fluid loss is a 3. Install the dipstick by pushing it add only enough fluid to bring transmission leak or overheated back in all the way; wait the level into the HOT band. transmission. This vehicle is not three seconds, and then pull it It does not take much fluid, equipped with a transmission fluid back out again. generally less than 0.5 L (1 pt). level dipstick. There is a special Do not overfill. procedure for checking and 4. Check both sides of the changing the transmission fluid in dipstick and read the lower 6. If the fluid level is in the acceptable range, push the these vehicles. Because this level. Repeat the check procedure is difficult, this should be procedure to verify the reading. dipstick back in all the way, then flip the handle down to done at the dealer. Contact the lock the dipstick in place. dealer for additional information or the procedure can be found in the Consistency of Readings service manual. See Service Publications Ordering Information Always check the fluid level at least 0 twice using the procedure described 474. previously. Consistency (repeatable readings) is important to maintaining proper fluid level. If readings are still inconsistent, contact the dealer. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

358 Vehicle Care The engine air cleaner/filter is on To inspect or replace the engine air Caution the passenger side of the engine cleaner/filter: compartment. See Engine Use of the incorrect automatic Compartment Overview 0 345. transmission fluid may damage the vehicle, and the damage may When to Inspect the Engine Air not be covered by the vehicle Cleaner/Filter warranty. Always use the For intervals on changing and automatic transmission fluid listed inspecting the engine air filter, see in Recommended Fluids and Maintenance Schedule 0 448. Lubricants 0 456. How to Inspect the Engine Air Cleaner/Filter Change the fluid and filter at the scheduled maintenance intervals Do not start the engine or have the listed in Maintenance Schedule engine running with the engine air 0 448. Be sure to use the cleaner/filter housing open. Before 1. Screws removing the engine air cleaner/ transmission fluid listed in 2. Electrical Connectors Recommended Fluids and filter, make sure that the engine air 3. Air Duct Clamp Lubricants 0 456. cleaner/filter housing and nearby components are free of dirt and 1. Locate the air cleaner/filter Engine Air Cleaner/Filter debris. Remove the engine air assembly. See Engine cleaner/filter. Lightly tap and shake Compartment Overview 0 345. If the vehicle has a diesel engine, the engine air cleaner/filter (away 2. Disconnect the outlet duct by see “8-Cylinder Pickup Models” from the vehicle), to release loose under “Engine Air Cleaner/Filter” in loosening the air duct dust and dirt. Inspect the engine air clamp (3). the Duramax diesel supplement for cleaner/filter for damage, and the correct inspection and replace if damaged. Do not clean 3. Disconnect the electrical replacement procedures. the engine air cleaner/filter or connectors (2) and the components with water or connector harness from the compressed air. cover. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 359 4. Remove the four screws (1) on top of the cover of the housing Caution and lift up the cover. If the air cleaner/filter is off, dirt 5. Remove the engine air cleaner/ can easily get into the engine, filter from the housing. Take which could damage it. Always care to dislodge as little dirt as have the air cleaner/filter in place possible. when driving. 6. Clean the engine air cleaner/ filter sealing surfaces and the housing. Cooling System 7. Inspect or replace the engine If the vehicle has the Duramax air cleaner/filter. diesel engine, see the Duramax 5.3L V8 Engine Shown, 4.3L diesel supplement. 8. Reverse Steps 2–4 to reinstall V6 Engine and 6.2L V8 Engine the filter cover housing. The cooling system allows the Similar engine to maintain the correct 1. Coolant Surge Tank { Warning working temperature. 2. Coolant Surge Tank Operating the engine with the air Pressure Cap cleaner/filter off can cause you or 3. Engine Electric Cooling others to be burned. The air Fans (Out of View) cleaner not only cleans the air; it helps to stop flames if the engine backfires. Use caution when working on the engine and do not drive with the air cleaner/filter off. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

360 Vehicle Care What to Use { Warning

Do not touch heater or radiator { Warning hoses, or other engine parts. Plain water, or other liquids such They can be very hot and can as alcohol, can boil before the burn you. Do not run the engine if proper coolant mixture will. With there is a leak; all coolant could plain water or the wrong mixture, leak out. That could cause an the engine could get too hot but engine fire and can burn you. Fix there would not be an overheat any leak before driving the warning. The engine could catch vehicle. fire and you or others could be 6.0L V8 Engine burned. Engine Coolant 1. Coolant Surge Tank 2. Coolant Surge Tank The cooling system in the vehicle is Use a 50/50 mixture of clean, Pressure Cap filled with DEX-COOL engine drinkable water and DEX-COOL 3. Engine Belt-Driven Cooling coolant. This coolant is designed to coolant. This mixture: remain in the vehicle for 5 years or Fan (Out of View) . Gives freezing protection down 240 000 km (150,000 mi), whichever to −37 °C (−34 °F), outside occurs first. { Warning temperature. The following explains the cooling . Gives boiling protection up to An underhood electric fan can system and how to check and add 129 °C (265 °F), engine coolant when it is low. If there is a start up even when the engine is temperature. not running and can cause injury. problem with engine overheating, Keep hands, clothing, and tools see Engine Overheating 0 363. . Protects against rust and away from any underhood corrosion. electric fan. . Will not damage aluminum parts. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 361 . Helps keep the proper engine Checking Coolant the full cold mark. If it is not, there temperature. may be a leak in the cooling The coolant surge tank is located in system. the engine compartment on the Caution passenger side of the vehicle. See If coolant is visible but the coolant Engine Compartment Overview level is not at or above the full cold Do not use anything other than a 0 345. mark, see “How to Add Coolant to mix of DEX-COOL coolant that the Coolant Surge Tank for Gasoline The vehicle must be on a level meets GM Standard Engines,” following. GMW3420 and clean, drinkable surface when checking the coolant water. Anything else can cause level. How to Add Coolant to the damage to the engine cooling Coolant Surge Tank for system and the vehicle, which Gasoline Engines would not be covered by the If the vehicle has a diesel engine, vehicle warranty. see “Cooling System” in the Duramax diesel supplement for the Never dispose of engine coolant by proper coolant fill procedure. putting it in the trash, or by pouring it on the ground, or into sewers, { Warning streams, or bodies of water. Have the coolant changed by an Spilling coolant on hot engine authorized service center, familiar parts can burn you. Coolant with legal requirements regarding contains ethylene glycol and it will used coolant disposal. This will help 5.3L V8 Shown, 4.3L V6, 6.0L V8, burn if the engine parts are hot protect the environment and your and 6.2L V8 Similar enough. health. Check to see if coolant is visible in the coolant surge tank. If the coolant inside the coolant surge tank is boiling, wait until it cools down. The coolant level should be at or above GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

362 Vehicle Care Turn the pressure cap slowly { Warning Warning counterclockwise about one full turn. If a hiss is heard, wait for Plain water, or other liquids such Failure to follow the specific that to stop. A hiss means as alcohol, can boil before the coolant fill procedure could cause there is still some pressure left. proper coolant mixture will. With the engine to overheat and could plain water or the wrong mixture, cause system damage. If coolant 2. Keep turning the pressure cap the engine could get too hot but is not visible in the surge tank, slowly, and remove it. there would not be an overheat contact your dealer. 3. Fill the coolant surge tank with warning. The engine could catch the proper mixture to the full cold mark. fire and you or others could be If no coolant is visible in the surge burned. tank, add coolant. 4. With the coolant surge tank pressure cap off, start the engine and let it run until the { Warning engine coolant temperature gauge indicates approximately Steam and scalding liquids from a 90 °C (195 °F). hot cooling system are under By this time, the coolant level pressure. Turning the pressure Light-Duty Heavy-Duty inside the coolant surge tank cap, even a little, can cause them Coolant Surge Coolant Surge may be lower. If the level is to come out at high speed and Tank Tank lower, add more of the proper you could be burned. Never turn Pressure Cap Pressure Cap mixture to the coolant surge the cap when the cooling system, tank until the level reaches the 1. Remove the coolant surge tank including the pressure cap, is hot. full cold mark. pressure cap when the cooling Wait for the cooling system and system, including the coolant 5. Replace the pressure cap pressure cap to cool. surge tank pressure cap and tightly. upper radiator hose, is no longer hot. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 363 6. Verify coolant level after the The vehicle has several indicators running. If they are not, do not engine is shut off and the to warn of engine overheating. continue to run the engine and have coolant is cold. If necessary, There is a coolant temperature the vehicle serviced. repeat coolant fill procedure gauge in the vehicle's instrument Steps 1–6. If Steam is Coming from the cluster. See Engine Coolant Engine Compartment Temperature Gauge 0 144. Caution In addition, there are ENGINE { Warning If the pressure cap is not tightly OVERHEATED STOP ENGINE, installed, coolant loss and engine ENGINE OVERHEATED IDLE Steam and scalding liquids from a damage may occur. Be sure the ENGINE, and ENGINE POWER IS hot cooling system are under cap is properly and tightly REDUCED messages in the Driver pressure. Turning the pressure secured. Information Center (DIC). cap, even a little, can cause them If the decision is made not to lift the to come out at high speed and hood when this warning appears, you could be burned. Never turn Engine Overheating get service help right away. See the cap when the cooling system, If the vehicle has the Duramax Roadside Assistance Program including the pressure cap, is hot. 0 diesel engine, see the Duramax 469. Wait for the cooling system and diesel supplement. If the decision is made to lift the pressure cap to cool. hood, make sure the vehicle is Caution parked on a level surface. If No Steam is Coming from the Engine Compartment Do not run the engine if there is a 4.3L V6, 5.3L V8, and 6.2L leak in the engine cooling system. V8 Engines The ENGINE OVERHEATED STOP This can cause a loss of all Check to see if the engine cooling ENGINE or the ENGINE coolant and can damage the fans are running. If the engine is OVERHEATED IDLE ENGINE system and vehicle. Have any overheating, the fans should be message, along with a low coolant leaks fixed right away. condition, can indicate a serious problem. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

364 Vehicle Care If there is an engine overheat If the temperature overheat gauge is Overheated Engine warning, but no steam is seen or no longer in the overheat zone or an heard, the problem may not be too overheat warning no longer Protection serious. Sometimes the engine can displays, the vehicle can be driven. Operating Mode get a little too hot when the vehicle: Continue to drive the vehicle slowly If an overheated engine condition . Climbs a long hill on a hot day. for about 10 minutes. Keep a safe exists and the ENGINE POWER IS vehicle distance from the vehicle in REDUCED message displays, an . Stops after high-speed driving. front. If the warning does not come overheat protection mode which . Idles for long periods in traffic. back on, continue to drive normally alternates firing groups of cylinders and have the cooling system helps to prevent engine damage. In . Tows a trailer; see Trailer Towing checked for proper fill and function. 0 307. this mode, a loss in power and If the warning continues, pull over, engine performance will be noticed. If the ENGINE OVERHEATED stop, and park the vehicle This operating mode allows the STOP ENGINE or the ENGINE right away. vehicle to be driven to a safe place OVERHEATED IDLE ENGINE in an emergency. Driving extended If there is still no sign of steam and message appears with no sign of distances and/or towing a trailer in the vehicle is equipped with an steam, try this for a minute or so: the overheat protection mode engine driven cooling fan, push should be avoided. 1. Turn the air conditioning off. down the accelerator until the 2. Turn the heater on to the engine speed is about twice as fast highest temperature and to the as normal idle speed for at least Caution highest fan speed. Open the five minutes while the vehicle is After driving in the overheated windows as necessary. parked. If the warning is still there, turn off the engine and get everyone engine protection operating 3. When it is safe to do so, pull off out of the vehicle until it cools down. mode, the engine oil will be the road, shift to P (Park) or severely degraded. Any repairs N (Neutral) and let the If there is no sign of steam, idle the performed before the engine is engine idle. engine for five minutes while cool may cause engine damage. parked. If the warning is still Allow the engine to cool before displayed, turn off the engine until it cools down. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 365 will slow down when additional Power Steering Fluid Caution (Continued) cooling is not required and the clutch disengages. (1500 Series) attempting any repair. Repair the The vehicle has electric power cause of coolant loss, change the This fan noise may also be heard when starting the engine. It will go steering and does not use power oil, and reset the oil life system. steering fluid. See Engine Oil 0 350. away as the fan clutch partially disengages. Power Steering Fluid If the vehicle has electric cooling Engine Fan fan(s), the fans may be heard (2500/3500 Series) If the vehicle has a clutched engine spinning at low speed during most cooling fan, when the clutch is everyday driving. The fans may turn engaged, the fan spins faster to off if no cooling is required. Under provide more air to cool the engine. heavy vehicle loading, trailer towing, In most everyday driving conditions, high outside temperatures, the fan is spinning slower and the or operation of the air conditioning clutch is not fully engaged. This system, the fans may change to improves fuel economy and reduces high speed and an increase in fan See Engine Compartment Overview fan noise. Under heavy vehicle noise may be heard. This is normal 0 345 for reservoir location. loading, trailer towing, and/or high and indicates that the cooling outside temperatures, the fan speed system is functioning properly. The When to Check Power Steering increases as the clutch more fully fans will change to low speed when Fluid engages, so an increase in fan additional cooling is no longer It is not necessary to regularly noise may be heard. This is normal required. check power steering fluid unless and should not be mistaken as the The electric engine cooling fans there is a leak suspected in the transmission slipping or making may run after the engine has been system or an unusual noise is extra shifts. It is merely the cooling turned. off. This is normal and no heard. A fluid loss in this system system functioning properly. The fan service is required. could indicate a problem. Have the system inspected and repaired. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

366 Vehicle Care Wait for the power steering system What to Use Adding Washer Fluid to cool, with the engine off, before To determine what kind of fluid to The vehicle has a low washer fluid checking the fluid. use, see Recommended Fluids and message on the DIC that comes on How to Check Power Steering Lubricants 0 456. Always use the when the washer fluid is low. The Fluid proper fluid. message is displayed for 15 seconds at the start of each To check the power steering fluid: Caution ignition cycle. When the WASHER 1. Turn the ignition off and let the FLUID LOW ADD FLUID message engine compartment Use of the incorrect fluid may displays, washer fluid will need to cool down. damage the vehicle and the be added to the windshield washer fluid reservoir. 2. Wipe the cap and the top of the damages may not be covered by reservoir clean. the vehicle warranty. Always use the correct fluid listed in 3. Unscrew the cap and wipe the Recommended Fluids and dipstick with a clean rag. Lubricants 0 456. 4. Replace the cap and completely tighten it. Washer Fluid 5. Remove the cap again and look at the fluid level on the What to Use Open the cap with the washer dipstick. symbol on it. Add washer fluid until When windshield washer fluid needs the tank is full. See Engine The level should be between the to be added, be sure to read the Compartment Overview 0 345 for ADD and FULL marks. If necessary, manufacturer's instructions before reservoir location. add only enough fluid to bring the use. Use a fluid that has sufficient level up to the hashed area between protection against freezing in an the ADD and FULL marks. area where the temperature may fall below freezing. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 367

Caution Caution (Continued) Caution

. Do not use washer fluid that for fluid expansion if Continuing to drive with worn-out contains any type of water freezing occurs, which could brake pads could result in costly repellent coating. This can damage the tank if it is brake repair. cause the wiper blades to completely full. chatter or skip. Some driving conditions or climates . Do not use engine coolant Brakes can cause a brake squeal when the (antifreeze) in the brakes are first applied or lightly windshield washer. It can Disc brake pads have built-in wear applied. This does not mean damage the windshield indicators that make a high-pitched something is wrong with the brakes. washer system and paint. warning sound when the brake pads are worn and new pads are needed. Properly torqued wheel nuts are . Do not mix water with The sound can come and go or be necessary to help prevent brake ready-to-use washer fluid. heard all the time the vehicle is pulsation. When tires are rotated, Water can cause the moving, except when applying the inspect brake pads for wear and solution to freeze and brake pedal firmly. evenly tighten wheel nuts in the damage the washer fluid proper sequence to torque tank and other parts of the { Warning specifications in Capacities and washer system. Specifications 0 461. . When using concentrated The brake wear warning sound Brake linings should always be washer fluid, follow the means that soon the brakes will replaced as complete axle sets. manufacturer instructions for not work well. That could lead to adding water. a crash. When the brake wear Brake Pedal Travel . Fill the washer fluid tank warning sound is heard, have the See your dealer if the brake pedal only three-quarters full when vehicle serviced. does not return to normal height, it is very cold. This allows or if there is a rapid increase in (Continued) pedal travel. This could be a sign that brake service may be required. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

368 Vehicle Care Replacing Brake System Parts . Normal brake lining wear. When new linings are installed, the Warning (Continued) Always replace brake system parts fluid level goes back up. with new, approved replacement Add brake fluid only when work is parts. If this is not done, the brakes . A fluid leak in the brake done on the brake hydraulic may not work properly. The braking hydraulic system. Have the system. performance expected can change brake hydraulic system fixed. in many other ways if the wrong With a leak, the brakes will not replacement brake parts are work well. When the brake fluid falls to a low level, the brake warning light comes installed or parts are improperly Always clean the brake fluid installed. on. See Brake System Warning reservoir cap and the area around Light 0 152. the cap before removing it. Brake Fluid Brake fluid absorbs water over time. Do not top off the brake fluid. Replace brake fluid at the specified Adding fluid does not correct a leak. intervals to prevent increased If fluid is added when the linings are stopping distance. See Maintenance worn, there will be too much fluid Schedule 0 448. when new brake linings are installed. Add or remove fluid, as Checking Brake Fluid necessary, only when work is done Check brake fluid by looking at the on the brake hydraulic system. The brake master cylinder reservoir brake fluid reservoir. See Engine Compartment Overview 0 345. is filled with DOT 3 brake fluid. See { Warning Engine Compartment Overview 0 345 for the location of the If too much brake fluid is added, it reservoir. can spill on the engine and burn, There are only two reasons why the if the engine is hot enough. You brake fluid level in the reservoir may or others could be burned, and go down: the vehicle could be damaged. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 369

{ Warning { Warning

The wrong or contaminated brake WARNING: Battery posts, fluid could result in damage to the terminals, and related brake system. This could result in accessories contain lead and lead the loss of braking leading to a compounds, chemicals known to possible injury. Always use the the State of California to cause proper GM approved brake fluid. cancer and birth defects or other reproductive harm. Batteries also contain other chemicals known to the State of California to cause Caution cancer. WASH HANDS AFTER The fluid level should be above HANDLING. For more information MIN. If it is not, have the brake If brake fluid is spilled on the hydraulic system checked to see if vehicle's painted surfaces, the go to www.P65Warnings.ca.gov/ there is a leak. paint finish can be damaged. passenger-vehicle. After work is done on the brake Immediately wash off any painted hydraulic system, make sure the surface. See California Proposition 0 level is above MIN but not over the 65 Warning 343 and the back cover. MAX mark. Battery - North America Vehicle Storage What to Add The original equipment battery is Use only GM approved DOT 3 maintenance free. Do not remove brake fluid from a clean, sealed the cap and do not add fluid. { Warning container. See Recommended Refer to the replacement number Batteries have acid that can burn Fluids and Lubricants 0 456. shown on the original battery label you and gas that can explode. when a new battery is needed. See You can be badly hurt if you are Engine Compartment Overview 0 345 for battery location. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

370 Vehicle Care When to Change Lubricant Warning (Continued) Refer to Maintenance Schedule not careful. See Jump Starting - 0 448 to determine how often to North America 0 426 for tips on change the lubricant. working around a battery without What to Use getting hurt. Refer to Recommended Fluids and Lubricants 0 456 to determine what Infrequent Usage: Remove the kind of lubricant to use. black, negative (−) cable from the battery to keep the battery from Front Axle running down. When to Check and Change Extended Storage: Remove the 1. Fill Plug Lubricant black, negative (−) cable from the 2. Drain Plug battery or use a battery trickle It is not necessary to regularly charger. To get an accurate reading, the check front axle fluid unless a leak vehicle should be on a level is suspected, or an unusual noise is Four-Wheel Drive surface. heard. A fluid loss could indicate a If the level is below the bottom of problem. Have it inspected and Transfer Case the fill plug (1) hole, located on the repaired. transfer case, some lubricant will When to Check Lubricant How to Check Lubricant need to be added. Add enough Refer to Maintenance Schedule lubricant to raise the level to the To get an accurate reading, the 0 448 to determine when to check bottom of the fill plug (1) hole. Use vehicle should be on a level the lubricant. care not to overtighten the plug. surface. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 371 What to Use Refer to Recommended Fluids and Lubricants 0 456 to determine what kind of lubricant to use. Rear Axle When to Check Lubricant It is not necessary to regularly check rear axle fluid unless a leak is suspected or an unusual noise is heard. A fluid loss could indicate a 1500 Series All Except 1500 Series problem. Have it inspected and repaired. 1. Fill Plug 1. Fill Plug 2. Drain Plug 2. Drain Plug All axle assemblies are filled by volume of fluid during production. . When the differential is cold, add They are not filled to reach a certain enough lubricant to raise the level. When checking the fluid level level from 0 mm (0 in) to 3.2 mm on any axle, variations in the (1/8 in) below the fill readings can be caused by factory plug (1) hole. fill differences between the minimum . When the differential is at and the maximum fluid volume. operating temperature (warm), Also, if a vehicle has just been add enough lubricant to raise the driven before checking the fluid level to the bottom of the fill level, it may appear lower than plug (1) hole. normal because fluid has traveled out along the axle tubes and has not drained back to the sump area. Therefore, a reading taken GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

372 Vehicle Care five minutes after the vehicle has fill plug hole, located on the rear been driven will appear to have a axle. Add only enough fluid to lower fluid level than a vehicle that reach the proper level. has been stationary for an hour or . For all 6.0L 2500HD Series two. The rear axle assembly must applications, the proper level is be supported on a flat, level surface from 0 mm to 13 mm (0 to 0.5 in) to get a true reading. below the bottom of the fill plug How to Check Lubricant hole, located on the rear axle. Add only enough fluid to reach the proper level. . For all 6.6L Duramax Diesel 2500HD Series applications and All Other Series and Engines all 3500 Series applications, the To get an accurate reading, the proper level is from 17 mm to vehicle should be on a level 21 mm (0.6 in to 0.8 in) below surface. the bottom of the fill plug hole, . For all 4.3L and 5.3L 1500 located on the rear axle. Add Series applications, the proper only enough fluid to reach the level is 1.0 mm to 19.0 mm proper level. (0.04 in to 0.7 in) below the What to Use 2500HD with 6.0L bottom of the fill hole, located on the rear axle. Add only enough Refer to Recommended Fluids and 0 fluid to reach the proper level. Lubricants 456 to determine what kind of lubricant to use. . For 6.2L 1500 Series applications, the proper level is from 15 mm to 40 mm (0.6 in to 1.6 in) below the bottom of the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 373 Noise Control System The following information relates to control prior to its sale or compliance with federal noise delivery to the ultimate Noise Emissions Warranty emission standards for vehicles with purchaser or while it is in General Motors warrants to the first a Gross Vehicle Weight Rating use; or person who purchases this vehicle (GVWR) of more than 4 536 kg 2. The use of the vehicle after for purposes other than resale and (10,000 lb). The Maintenance such device or element of to each subsequent purchaser that Schedule provides information on design has been removed or this vehicle as manufactured by maintaining the noise control system rendered inoperative by any General Motors, was designed, built to minimize degradation of the noise person. emission control system during the and equipped to conform at the time Among those acts presumed to it left General Motors s control with life of the vehicle. The noise control ’ constitute tampering are the acts all applicable U.S. EPA Noise system warranty is given in the listed below. Control Regulations. This warranty warranty manual. covers this vehicle as designed, These standards apply only to Insulation: built and equipped by General vehicles sold in the United States. Removal of the noise shields or any Motors, and is not limited to any underhood insulation. particular part, component or TAMPERING WITH NOISE system of the vehicle manufactured CONTROL SYSTEM Engine: PROHIBITED by General Motors. Defects in Removal or rendering the engine design, assembly or in any part, Federal law prohibits the following speed governor, if equipped, component or system of the vehicle acts or the causing thereof: inoperative so as to allow engine as manufactured by General 1. The removal or rendering speed to exceed manufacturer Motors, which, at the time it left specifications. General Motors’s control, caused inoperative by any person, noise emissions to exceed Federal other than for purposes of Fan and Drive: maintenance, repair, standards, are covered by this . Removal of the fan clutch, warranty for the life of the vehicle. or replacement, of any device or element of design if equipped, or rendering the incorporated into any new clutch inoperative. vehicle for the purpose of noise GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

374 Vehicle Care . Removal of the fan shroud, 2. Apply both the parking brake 1. Before starting this check, be if equipped. and the regular brake. sure there is enough room around the vehicle. It should be Air Intake: Do not use the accelerator pedal, and be ready to turn off parked on a level surface. . Removal of the air cleaner the engine immediately if it 2. Apply the parking brake. Be silencer. starts. ready to apply the regular . Modification of the air cleaner. 3. Try to start the engine in each brake immediately if the vehicle begins to move. Exhaust: gear. The vehicle should start only in P (Park) or N (Neutral). 3. With the engine off, turn the Removal of the muffler and/or . If the vehicle starts in any other ignition on, but do not start the resonator. position, contact your dealer for engine. Without applying the . Removal of the exhaust pipes service. regular brake, try to move the and exhaust pipe clamps. shift lever out of P (Park) with Automatic Transmission normal effort. If the shift lever Starter Switch Check Shift Lock Control moves out of P (Park), contact your dealer for service. Function Check { Warning Ignition Transmission When you are doing this { Warning Lock Check inspection, the vehicle could move suddenly. If the vehicle When you are doing this While parked and with the parking brake set, try to turn the ignition off moves, you or others could be inspection, the vehicle could in each shift lever position. injured. move suddenly. If the vehicle moves, you or others could be . The ignition should turn off only injured. when the shift lever is in 1. Before starting this check, be P (Park). sure there is enough room around the vehicle. . The ignition key should come out only when the ignition is off. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 375 Contact your dealer if service is pressure from the regular brake required. pedal. Do this until the vehicle is Caution held by the parking brake only. Park Brake and P (Park) Allowing the wiper arm to touch . To check the P (Park) the windshield when no wiper Mechanism Check mechanism's holding ability: blade is installed could damage With the engine running, shift to the windshield. Any damage that { Warning P (Park). Then release the occurs would not be covered by parking brake followed by the the vehicle warranty. Do not allow regular brake. When you are doing this check, the wiper arm to touch the the vehicle could begin to move. Contact your dealer if service is windshield. You or others could be injured required. and property could be damaged. Make sure there is room in front Wiper Blade Replacement To replace the windshield wiper of the vehicle in case it begins to blade: roll. Be ready to apply the regular Windshield wiper blades should be 1. Pull the windshield wiper inspected for wear or cracking. brake at once should the vehicle assembly away from the begin to move. Replacement blades come in windshield. different types and are removed in different ways. For proper Park on a fairly steep hill, with the windshield wiper blade length and vehicle facing downhill. Keeping type, see Maintenance your foot on the regular brake, set Replacement Parts 0 458. the parking brake. . To check the parking brake's holding ability: With the engine running and the transmission in N (Neutral), slowly remove foot GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

376 Vehicle Care GM replacement windshield is recommended. The replacement Warning (Continued) windshield must be installed according to GM specifications for make sure the hood/trunk/liftgate proper alignment. If it is not, these is held open with enough force. systems may not work properly, they If struts are failing to hold the may display messages, or they may hood/trunk/liftgate, do not not work at all. See your dealer for operate. Have the vehicle proper windshield replacement. serviced. Gas Strut(s) This vehicle is equipped with gas Caution 2. Press the button (2) in the strut(s) to provide assistance in middle of the wiper arm lifting and holding open the hood/ Do not apply tape or hang any connector, and pull the wiper trunk/liftgate system in full open objects from gas struts. Also do blade away from the arm position. not push down or pull on gas connector (1). struts. This may cause damage to 3. Remove the wiper blade. { Warning the vehicle. 4. Reverse Steps 1–3 for wiper If the gas struts that hold open See Maintenance Schedule 0 448. blade replacement. the hood, trunk, and/or liftgate fail, you or others could be seriously Windshield Replacement injured. Take the vehicle to your Driver Assistance Systems dealer for service immediately. Visually inspect the gas struts for If the windshield needs to be signs of wear, cracks, or other replaced and the vehicle is damage periodically. Check to equipped with a front camera sensor for the Driver Assistance Systems, a (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 377 Headlamp Aiming Headlamp aim has been preset and should need no further adjustment. If the vehicle is damaged in a crash, the headlamp aim may be affected. If adjustment to the headlamps is necessary, see your dealer.

Hood Liftgate

Trunk GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

378 Vehicle Care Taillamps, Turn Signal, Bulb Replacement Warning (Continued) For the proper type of replacement Stoplamps, and Back-Up bulbs, or any bulb changing service any of the system Lamps procedure not listed in this section, components, you could be contact your dealer. seriously injured. Have your dealer or a qualified technician Halogen Bulbs service them.

{ Warning After an HID headlamp bulb has been replaced, the beam might be a Halogen bulbs have pressurized slightly different shade than it was gas inside and can burst if you originally. This is normal. drop or scratch the bulb. You or others could be injured. Be sure LED Lighting to read and follow the instructions This vehicle has several LED lamps. on the bulb package. For replacement of any LED lighting assembly, contact your dealer. 1. Stoplamp/Taillamp/Turn High Intensity Discharge Signal Lamp 2. Back-Up Lamp (HID) Lighting 3. Sidemarker Lamp To replace one of these bulbs: { Warning 1. Open the tailgate. The High Intensity Discharge (HID) lighting system operates at a very high voltage. If you try to (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 379

2. Remove the two rear lamp 4. Pull the rear lamp assembly 8. Verify the retainer ring of assembly screws. straight back to remove it from attachment stud is pulled away the vehicle. 3. Pull the rear lamp assembly from lamp. If the retainer ring is outboard away from the box 5. Turn the bulb socket out of position, it will not side until the retainers release. counterclockwise. engage. Reset the retainer by pulling it forward with a tool. There will be a noise when the 6. Pull the bulb straight out from retainers release. the socket. 9. Push the rear lamp assembly straight in until it is seated 7. Replace the bulb, then insert against the vehicle. the bulb socket into the rear lamp assembly and turn 10. Make sure the rear lamp clockwise. assembly is flush with the box side. 11. Reinstall the two rear lamp assembly screws. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

380 Vehicle Care Center High-Mounted To replace one of these bulbs: Electrical System Stoplamp (CHMSL) and Cargo Lamp High Voltage Devices and Wiring For an eAssist vehicle, see the Silverado/Sierra eAssist supplement. Electrical System Overload The vehicle has fuses to protect against an electrical system 1. Remove the two screws and lift overload. Fuses also protect power off the lamp assembly. devices in the vehicle. 2. Turn the bulb socket Replace a bad fuse with a new one 1. Cargo Lamp Bulbs counterclockwise and pull it of the identical size and rating. 2. Center High-Mounted straight out. If there is a problem on the road and Stoplamp (CHMSL) Bulb 3. Pull the bulb straight out from a fuse needs to be replaced, there the socket. are some spare fuses and a fuse puller in the left instrument panel fuse block. The same amperage fuse can also be borrowed. Choose some feature of the vehicle that is not needed to use and replace it as soon as possible. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 381 Headlamp Wiring Fuses and Circuit Fuses of the same amperage can be temporarily borrowed from An electrical overload may cause Breakers another fuse location, if a fuse goes the lamps to go on and off, or in The wiring circuits in the vehicle are out. Replace the fuse as soon as some cases to remain off. Have the protected from short circuits by a possible. headlamp wiring checked right away combination of fuses and circuit if the lamps go on and off or breakers. This greatly reduces the remain off. Engine Compartment chance of damage caused by Fuse Block Windshield Wipers electrical problems. If the vehicle has a diesel engine, If the wiper motor overheats due to { Danger see the Duramax diesel heavy snow or ice, the windshield supplement. wipers will stop until the motor cools Fuses and circuit breakers are and will then restart. The engine compartment fuse block marked with their ampere rating. is in the engine compartment, on Although the circuit is protected Do not exceed the the driver side of the vehicle. from electrical overload, overload specified amperage rating when due to heavy snow or ice may replacing fuses and circuit cause wiper linkage damage. breakers. Use of an oversized Always clear ice and heavy snow fuse or circuit breaker can result from the windshield before using the in a vehicle fire. You and others windshield wipers. could be seriously injured or If the overload is caused by an killed. electrical problem and not snow or ice, be sure to get it fixed. To check a fuse, look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure to replace a bad fuse with a new one of the identical size and rating. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

382 Vehicle Care Lift the cover to access the fuse block.

Caution

Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.

A fuse puller is available in the left instrument panel fuse block. The vehicle may not be equipped with all of the fuses, relays, and features shown.

Fuses Usage Fuses Usage 1 Trailer brake 2 Trailer battery GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 383

Fuses Usage Fuses Usage Fuses Usage 3 Antilock brake 16 Trailer reverse 30 Upfitter 3 system pump lamps 31 Upfitter 4 4 Instrument 17 Right trailer stop/ 32 Upfitter 4 panel BEC 1 Turn signal lamps 33 Reverse lamps 5 Passenger 18 Fuel pump motorized seat belt 34 Engine control 19 Integrated chassis module/Ignition 6 4WD transfer case control module electronic control 35 Air conditioning 20 Electronic clutch 7 Electric park brake suspension control 36 Heated mirrors 8 Instrument module panel BEC 2 21 Fuel pump power 37 Upfitter 1 9 Driver motorized module 38 Center seat belt 22 Upfitter 1 high-mounted stoplamp 10 Rear window 23 Upfitter 2 defogger 39 Miscellaneous/ 24 Front wiper Ignition 11 Starter 25 Antilock brake 40 Transmission/ 12 Cooling fan 1 system valve Ignition 13 Cooling fan 2 26 Upfitter 2 41 Fuel pump 2 14 Left trailer stop/ 27 Upfitter 3 42 Cooling fan clutch Turn signal lamps 28 Right parking 43 Engine 15 Trailer parking lamps 44 Fuel lamps 29 Left parking lamps injectors A–odd GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

384 Vehicle Care

Fuses Usage Fuses Usage Relays Usage 45 Fuel 58 Headlamps 69 Rear window injectors B–even 74 Electric running defogger 46 O2 Sensor B boards (if 70 Engine control 47 Throttle control equipped) module 48 Horn 76 Fuel pump prime / 71 Vacuum pump/ MGU motor Cooling fan clutch 49 Fog lamps 77 Cabin pump motor 72 CKT 95 50 O2 Sensor A 79 Vacuum pump 73 CKT 92 51 Engine control module 75 Fuel pump prime/ Relays Usage MGU motor 52 Interior heater 59 Fuel pump 78 Vacuum pump 53 Accessory power 60 Upfitter 2 switch module/TPM pump 61 Upfitter 3 54 Front washer 62 Upfitter 4 55 Air conditioning/ Battery regulated 63 Trailer parking voltage control lamps 56 Air conditioning 64 Run/Crank module/ 65 Upfitter 1 Battery pack 66 Fuel pump 2 57 Transmission control module/ 67 Air conditioning Engine control control module 68 Starter GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 385 Instrument Panel Fuse Block (Right)

The right instrument panel fuse block access door is on the passenger side edge of the instrument panel. Pull off the cover to access the fuse block.

The vehicle may not be equipped Fuses Usage with all of the fuses, relays, and features shown. 1 Accessory power outlet 3 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

386 Vehicle Care

Fuses Usage Fuses Usage Instrument Panel Fuse 2 Accessory power 35 Air conditioning Block (Left) outlet 4 inverter 7 Body control module 4 36 Amplifier 8 Body control module 8 37 Battery system 9 Rear seat 39 Rear sliding window entertainment 42 Right door window 10 Cargo lamp motor 15 Steering wheel 43 Front blower controls 44 Special equipment 18 Radio option 19 – 45 Body control module 6 20 Sunroof 46 Body control module 7 The left instrument panel fuse block 23 Airbag/Info 47 Passenger seat access door is on the driver side edge of the instrument panel. 26 Export/Power take off/ Special equipment Relays Usage Pull off the cover to access the fuse block. option/Battery 1 50 Retained accessory 27 Obstacle detection/ power USB ports 51 Rear sliding 28 Body control module 2 window open 32 Special equipment 52 Rear sliding window option/Battery 2 close GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 387

Fuses Usage 2 Special equipment option/Retained accessory power 3 Universal remote system/Interior rearview mirror 6 Body control module 3 7 Body control module 5 8 Driver window switch/ Mirror switch 9 – 10 Accessory power outlet/Retained accessory power 11 Accessory power outlet battery 12 Accessory power outlet 1/Cigarette lighter 13 Discrete logic ignition switch The vehicle may not be equipped Fuses Usage with all of the fuses, relays, and 14 Switch backlighting features shown. 1 Accessory power outlet 2 17 Body control module 1 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

388 Vehicle Care

Fuses Usage Fuses Usage Fuses Usage 19 – 28 – 43 Left heated, cooled or ventilated seats (if 20 – 29 Park enable/ equipped) 22 Heating, ventilation, Electrically adjustable and air conditioning/ pedals 44 Right heated, cooled Auxiliary heating, 30 Special equipment or ventilated seats (if ventilation, and air option equipped) conditioning/Ignition 31 Accessory/Run/Crank 45 – 23 Instrument cluster/ 32 Heated steering wheel Ignition sensing Relays Usage diagnostic module/ 33 – 49 Retained accessory Ignition 34 Instrument cluster power 24 – 36 – 50 Run/Crank 25 Data link connector/ 37 – Driver seat module 38 4WD transfer case 26 Passive entry/Passive electronic control start/Heating, ventilation, and air 40 Left doors conditioning 41 Driver power seat 27 – GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 389

Wheels and Tires Warning (Continued) Warning (Continued) Tires . Underinflated tires pose . Replace any tires that Every new GM vehicle has the same danger as have been damaged by high-quality tires made by a overloaded tires. The impacts with potholes, leading tire manufacturer. See resulting crash could curbs, etc. the warranty manual for cause serious injury. . Improperly repaired tires information regarding the tire Check all tires frequently can cause a crash. Only warranty and where to get to maintain the the dealer or an service. For additional recommended pressure. authorized tire service information refer to the tire Tire pressure should be center should repair, manufacturer. checked when the tires replace, dismount, and are cold. mount the tires. { Warning . Overinflated tires are . Do not spin the tires in more likely to be cut, . Poorly maintained and excess of 56 km/h punctured, or broken by (35 mph) on slippery improperly used tires are a sudden impact — such dangerous. surfaces such as snow, as when hitting a pothole. mud, ice, etc. Excessive . Overloading the tires can Keep tires at the spinning may cause the cause overheating as a recommended pressure. tires to explode. result of too much . Worn or old tires can flexing. There could be a cause a crash. If the All-Season Tires blowout and a serious tread is badly worn, crash. See Vehicle Load replace them. This vehicle may come with 0 all-season tires. These tires are Limits 248. (Continued) (Continued) designed to provide good overall GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

390 Vehicle Care performance on most road surfaces roads is expected. See your dealer Low-Profile Tires and weather conditions. Original for details regarding winter tire equipment tires designed to GM's availability and proper tire selection. If the vehicle has P275/55R20, specific tire performance criteria Also, see Buying New Tires 0 408. P285/50R20, or P285/45R22 have a TPC specification code With winter tires, there may be size tires, they are classified as molded onto the sidewall. Original decreased dry road traction, low-profile tires. equipment all-season tires can be increased road noise, and shorter identified by the last two characters tread life. After changing to winter Caution of this TPC code, which will tires, be alert for changes in vehicle be “MS.” handling and braking. Low-profile tires are more susceptible to damage from road Consider installing winter tires on If using winter tires: the vehicle if frequent driving on hazards or curb impact than snow or ice-covered roads is . Use tires of the same brand and standard profile tires. Tire and/or expected. All-season tires provide tread type on all four wheel wheel assembly damage can adequate performance for most positions. occur when coming into contact winter driving conditions, but they . Use only radial ply tires of the with road hazards like potholes, may not offer the same level of same size, load range, and or sharp edged objects, or when traction or performance as winter speed rating as the original sliding into a curb. The warranty tires on snow or ice-covered roads. equipment tires. does not cover this type of See Winter Tires 0 390. Winter tires with the same speed damage. Keep tires set to the correct inflation pressure and Winter Tires rating as the original equipment tires may not be available for H, V, W, Y, when possible, avoid contact with This vehicle was not originally and ZR speed rated tires. If winter curbs, potholes, and other road equipped with winter tires. Winter tires with a lower speed rating are hazards. tires are designed for increased chosen, never exceed the tire's traction on snow and ice-covered maximum speed capability. roads. Consider installing winter tires on the vehicle if frequent driving on ice or snow covered GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 391 All-Terrain Tires code molded onto the sidewall. GM's TPC specifications meet or This vehicle may have all-terrain tires. These tires provide good exceed all federal safety performance on most road surfaces, guidelines. weather conditions, and for off-road (3) DOT (Department of 0 driving. See Off-Road Driving 239. Transportation) : The The tread pattern on these tires may Department of Transportation wear more quickly than other tires. (DOT) code indicates that the Consider rotating the tires more tire is in compliance with the frequently than at 12 000 km U.S. Department of (7,500 mi) intervals if irregular wear Transportation Motor Vehicle is noted when the tires are Passenger (P-Metric)/Spare Tire Safety Standards. inspected. See Tire Inspection 0 404. (1) Tire Size : The tire size code DOT Tire Date of is a combination of letters and Manufacture : The last four Tire Sidewall Labeling numbers used to define a digits of the TIN indicate the tire particular tire's width, height, Useful information about a tire is manufactured date. The first two aspect ratio, construction type, digits represent the week molded into the sidewall. The and service description. See the examples show a typical (01-52) and the last two digits, “Tire Size” illustration later in this the year. For example, the third passenger and light truck tire section for more detail. sidewall. week of the year 2010 would (2) TPC Spec (Tire have a four-digit DOT date Performance Criteria of 0310. Specification) : Original (4) Tire Identification Number equipment tires designed to (TIN) : The letters and numbers GM's specific tire performance following the DOT code are the criteria have a TPC specification Tire Identification Number (TIN). GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

392 Vehicle Care The TIN shows the (7) Maximum Cold Inflation manufacturer and plant code, Load Limit : Maximum load that tire size, and date the tire was can be carried and the manufactured. The TIN is maximum pressure needed to molded onto both sides of the support that load. For tire, although only one side may information on recommended have the date of manufacture. tire pressure see Tire Pressure 0 397 and Vehicle Load Limits (5) Tire Ply Material : The type 0 of cord and number of plies in 248. the sidewall and under the tread. (8) Temporary Use Only : Only use a temporary spare tire until (6) Uniform Tire Quality Light Truck (LT-Metric) Tire Grading (UTQG) : Tire the road tire is repaired and manufacturers are required to replaced. This spare tire should (1) Tire Size : The tire size code grade tires based on three not be driven on over 112 km/h is a combination of letters and performance factors: treadwear, (70 mph), or 88 km/h (55 mph) numbers used to define a traction, and temperature when pulling a trailer, with the particular tire's width, height, proper inflation pressure. See aspect ratio, construction type, resistance. For more 0 information, see Uniform Tire Full-Size Spare Tire 425. and service description. See the Quality Grading 0 410. “Tire Size” illustration later in this section for more detail. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 393 (2) TPC Spec (Tire U.S. Department of (6) Tire Ply Material : The type Performance Criteria Transportation Motor Vehicle of cord and number of plies in Specification) : Original Safety Standards. the sidewall and under the tread. equipment tires designed to DOT Tire Date of (7) Single Tire Maximum GM's specific tire performance Manufacture : The last four Load : Maximum load that can criteria have a TPC specification digits of the TIN indicate the tire be carried and the maximum code molded onto the sidewall. manufactured date. The first two pressure needed to support that GM's TPC specifications meet or digits represent the week load when used as a single. For exceed all federal safety (01-52) and the last two digits, information on recommended guidelines. the year. For example, the third tire pressure see Tire Pressure (3) Dual Tire Maximum Load : week of the year 2010 would 0 397 and Vehicle Load Limits Maximum load that can be have a four-digit DOT date 0 248. carried and the maximum of 0310. pressure needed to support that (5) Tire Identification Number Tire Designations load when used in a dual (TIN) : The letters and numbers Tire Size configuration. For information on following the DOT code are the The examples show a typical recommended tire pressure see Tire Identification Number (TIN). 0 passenger vehicle and light Tire Pressure 397 and Vehicle The TIN shows the 0 truck tire size. Load Limits 248. manufacturer and plant code, (4) DOT (Department of tire size, and date the tire was Transportation) : The manufactured. The TIN is Department of Transportation molded onto both sides of the (DOT) code indicates that the tire, although only one side may tire is in compliance with the have the date of manufacture. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

394 Vehicle Care would mean that the tire's sidewall is 75 percent as high as it is wide. (4) Construction Code : A letter code is used to indicate the type Passenger (P-Metric) Tire of ply construction in the tire. Light Truck (LT-Metric) Tire The letter R means radial ply (1) Passenger (P-Metric) Tire : construction; the letter D means (1) Light Truck (LT-Metric) The United States version of a diagonal or bias ply Tire : The United States version metric tire sizing system. The construction; and the letter B of a metric tire sizing system. letter P as the first character in means belted-bias ply The letters LT as the first two the tire size means a passenger construction. characters in the tire size mean vehicle tire engineered to a light truck tire engineered to standards set by the U.S. Tire (5) Rim Diameter : Diameter of standards set by the U.S. Tire and Rim Association. the wheel in inches. and Rim Association. (2) Tire Width : The three-digit (6) Service Description : These (2) Tire Width : The three-digit number indicates the tire section characters represent the load number indicates the tire section width in millimeters from index and speed rating of the width in millimeters from sidewall to sidewall. tire. The load index represents sidewall to sidewall. the load carrying capacity a tire (3) Aspect Ratio : A two-digit is certified to carry. The speed (3) Aspect Ratio : A two-digit number that indicates the tire rating is the maximum speed a number that indicates the tire height-to-width measurements. tire is certified to carry a load. height-to-width measurements. For example, if the tire size For example, if the tire size aspect ratio is 75, as shown in aspect ratio is 75, as shown in item C of the tire illustration, it item 3 of the light truck (LT-Metric) tire illustration, it GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 395 would mean that the tire's Tire Terminology and Bead : The tire bead contains sidewall is 75 percent as high as Definitions steel wires wrapped by steel it is wide. cords that hold the tire onto Air Pressure : The amount of the rim. (4) Construction Code : A letter air inside the tire pressing code is used to indicate the type outward on each square inch of Bias Ply Tire : A pneumatic tire of ply construction in the tire. the tire. Air pressure is in which the plies are laid at The letter R means radial ply expressed in kPa (kilopascal) alternate angles less than construction; the letter D means or psi (pounds per square inch). 90 degrees to the centerline of diagonal or bias ply the tread. construction; and the letter B Accessory Weight : The combined weight of optional Cold Tire Pressure : The means belted-bias ply amount of air pressure in a tire, construction. accessories. Some examples of optional accessories are measured in kPa (kilopascal) (5) Rim Diameter : Diameter of automatic transmission, power or psi (pounds per square inch) the wheel in inches. windows, power seats, and air before a tire has built up heat (6) Load Range : Load Range. conditioning. from driving. See Tire Pressure 0 397. (7) Service Description : The Aspect Ratio : The relationship service description indicates the of a tire's height to its width. Curb Weight : The weight of a motor vehicle with standard and load index and speed rating of a Belt : A rubber coated layer of tire. If two numbers are given as optional equipment including the cords between the plies and the maximum capacity of fuel, oil, in the example, 120/116, then tread. Cords may be made from this represents the load index for and coolant, but without steel or other reinforcing passengers and cargo. single versus dual wheel usage materials. (single/dual). The speed rating is DOT Markings : A code molded the maximum speed a tire is into the sidewall of a tire certified to carry a load. signifying that the tire is in compliance with the U.S. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

396 Vehicle Care Department of Transportation Light Truck (LT-Metric) Tire : A Normal Occupant Weight : The (DOT) Motor Vehicle Safety tire used on light duty trucks and number of occupants a vehicle Standards. The DOT code some multipurpose passenger is designed to seat multiplied by includes the Tire Identification vehicles. 68 kg (150 lb). See Vehicle Load 0 Number (TIN), an alphanumeric Load Index : An assigned Limits 248. designator which can also number ranging from 1 to 279 Occupant Distribution : identify the tire manufacturer, that corresponds to the load Designated seating positions. production plant, brand, and carrying capacity of a tire. date of production. Outward Facing Sidewall : The Maximum Inflation Pressure : side of an asymmetrical tire that GVWR : Gross Vehicle Weight The maximum air pressure to has a particular side that faces Rating. See Vehicle Load Limits 0 which a cold tire can be inflated. outward when mounted on a 248. The maximum air pressure is vehicle. The side of the tire that GAWR FRT : Gross Axle Weight molded onto the sidewall. contains a whitewall, bears Rating for the front axle. See white lettering, or bears 0 Maximum Load Rating : The Vehicle Load Limits 248. load rating for a tire at the manufacturer, brand, and/or GAWR RR : Gross Axle Weight maximum permissible inflation model name molding that is Rating for the rear axle. See pressure for that tire. higher or deeper than the same Vehicle Load Limits 0 248. moldings on the other sidewall Maximum Loaded Vehicle of the tire. Intended Outboard Sidewall : Weight : The sum of curb The side of an asymmetrical tire weight, accessory weight, Passenger (P-Metric) Tire : A that must always face outward vehicle capacity weight, and tire used on passenger cars and when mounted on a vehicle. production options weight. some light duty trucks and multipurpose vehicles. Kilopascal (kPa) : The metric unit for air pressure. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 397 Recommended Inflation Traction : The friction between Vehicle Capacity Weight : The Pressure : Vehicle the tire and the road surface. number of designated seating manufacturer's recommended The amount of grip provided. positions multiplied by tire inflation pressure as shown Tread : The portion of a tire that 68 kg (150 lb) plus the rated on the tire placard. See Tire cargo load. See Vehicle Load 0 comes into contact with 0 Pressure 397 and Vehicle the road. Limits 248. Load Limits 0 248. Treadwear Indicators : Narrow Vehicle Maximum Load on the Radial Ply Tire : A pneumatic bands, sometimes called wear Tire : Load on an individual tire tire in which the ply cords that bars, that show across the tread due to curb weight, accessory extend to the beads are laid at of a tire when only 1.6 mm weight, occupant weight, and 90 degrees to the centerline of (1/16 in) of tread remains. See cargo weight. the tread. When It Is Time for New Tires Vehicle Placard : A label Rim : A metal support for a tire 0 407. permanently attached to a and upon which the tire beads UTQGS (Uniform Tire Quality vehicle showing the vehicle are seated. Grading Standards) : A tire capacity weight and the original Sidewall : The portion of a tire information system that provides equipment tire size and between the tread and the bead. consumers with ratings for a recommended inflation pressure. See “Tire and Loading Speed Rating : An tire's traction, temperature, and treadwear. Ratings are Information Label” under Vehicle alphanumeric code assigned to Load Limits 0 248. a tire indicating the maximum determined by tire speed at which a tire can manufacturers using Tire Pressure operate. government testing procedures. The ratings are molded into the Tires need the correct amount of sidewall of the tire. See Uniform air pressure to operate Tire Quality Grading 0 410. effectively. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

398 Vehicle Care The Tire and Loading Do not forget the spare tire, Caution Information label on the vehicle if the vehicle has one. See 0 Neither tire underinflation nor indicates the original equipment Full-Size Spare Tire 425 for overinflation is good. tires and the correct cold tire additional information. inflation pressures. The Underinflated tires, or tires How to Check that do not have enough air, recommended pressure is the can result in: minimum air pressure needed to Use a good quality pocket-type support the vehicle's maximum gauge to check tire pressure. . Tire overloading and load carrying capacity. Proper tire inflation cannot be overheating which could determined by looking at the tire. For additional information lead to a blowout. Check the tire inflation pressure regarding how much weight the when the tires are cold, meaning . Premature or vehicle can carry, and an the vehicle has not been driven irregular wear. example of the Tire and Loading for at least three hours or no Information label, see Vehicle . Poor handling. more than 1.6 km (1 mi). Load Limits 0 248. How the . Reduced fuel economy. vehicle is loaded affects vehicle Remove the valve cap from the Overinflated tires, or tires that handling and ride comfort. Never tire valve stem. Press the tire have too much air, can load the vehicle with more gauge firmly onto the valve to result in: weight than it was designed to get a pressure measurement. If the cold tire inflation pressure . Unusual wear. carry. matches the recommended . Poor handling. When to Check pressure on the Tire and . Rough ride. Check the tires once a month Loading Information label, no or more. further adjustment is necessary. . Needless damage from If the inflation pressure is low, road hazards. add air until the recommended pressure is reached. If the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 399 inflation pressure is high, press Return the tires to the on the metal stem in the center Warning (Continued) recommended cold tire inflation of the tire valve to release air. pressure when high-speed driving This could cause a crash, and has ended. See Vehicle Load Limits Re-check the tire pressure with you or others could be killed. 0 248 and Tire Pressure 0 397. the tire gauge. Some high-speed rated tires require inflation pressure Tire Pressure Monitor Put the valve caps back on the adjustment for high-speed valve stems to keep out dirt and operation. When speed limits and System moisture and prevent leaks. Use road conditions allow the vehicle The Tire Pressure Monitor System only valve caps designed for the to be driven at high speeds, make (TPMS) uses radio and sensor vehicle by GM. TPMS sensors sure the tires are rated for technology to check tire pressure could be damaged and would high-speed operation, are in levels. The TPMS sensors monitor not be covered by the vehicle excellent condition, and are set to the air pressure in your tires and warranty. the correct cold tire inflation transmit tire pressure readings to a pressure for the vehicle load. receiver located in the vehicle. Tire Pressure for Each tire, including the spare (if High-Speed Operation Vehicles with P275/55R20 or provided), should be checked P285/50R20 size tires require monthly when cold and inflated to the inflation pressure recommended { Warning inflation pressure adjustment when driving the vehicle at speeds of by the vehicle manufacturer on the Driving at high speeds, 160 km/h 160 km/h (100 mph) or higher. Set vehicle placard or tire inflation pressure label. (If your vehicle has (100 mph) or higher, puts the cold tire inflation pressure to tires of a different size than the size additional strain on tires. 20 kPa (3 psi) above the recommended cold tire pressure indicated on the vehicle placard or Sustained high-speed driving tire inflation pressure label, you causes excessive heat buildup shown on the Tire and Loading Information label. should determine the proper tire and can cause sudden tire failure. inflation pressure for those tires.) (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

400 Vehicle Care As an added safety feature, your Your vehicle has also been See Tire Pressure Monitor vehicle has been equipped with a equipped with a TPMS malfunction Operation 0 400. tire pressure monitoring system indicator to indicate when the See Radio Frequency Statement (TPMS) that illuminates a low tire system is not operating properly. 0 475. pressure telltale when one or more The TPMS malfunction indicator is of your tires is significantly combined with the low tire pressure under-inflated. telltale. When the system detects a Tire Pressure Monitor Operation Accordingly, when the low tire malfunction, the telltale will flash for pressure telltale illuminates, you approximately one minute and then This vehicle may have a Tire should stop and check your tires as remain continuously illuminated. Pressure Monitor System (TPMS). soon as possible, and inflate them This sequence will continue upon The TPMS is designed to warn the to the proper pressure. Driving on a subsequent vehicle start-ups as driver when a low tire pressure significantly under-inflated tire long as the malfunction exists. condition exists. TPMS sensors are causes the tire to overheat and can When the malfunction indicator is mounted onto each tire and wheel lead to tire failure. Under-inflation illuminated, the system may not be assembly, excluding the spare tire also reduces fuel efficiency and tire able to detect or signal low tire and wheel assembly. The TPMS tread life, and may affect the pressure as intended. TPMS sensors monitor the air pressure in vehicle's handling and stopping malfunctions may occur for a variety the tires and transmit the tire ability. of reasons, including the installation pressure readings to a receiver located in the vehicle. Please note that the TPMS is not a of replacement or alternate tires or substitute for proper tire wheels on the vehicle that prevent maintenance, and it is the driver's the TPMS from functioning properly. responsibility to maintain correct tire Always check the TPMS malfunction pressure, even if under-inflation has telltale after replacing one or more not reached the level to trigger tires or wheels on your vehicle to illumination of the TPMS low tire ensure that the replacement or pressure telltale. alternate tires and wheels allow the TPMS to continue to function properly. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 401 When a low tire pressure condition turn off as the vehicle is driven. This is detected, the TPMS illuminates could be an early indicator that the Caution (Continued) the low tire pressure warning light air pressure is getting low and located on the instrument cluster. needs to be inflated to the proper caused by using an incorrect tire If the warning light comes on, stop pressure. sealant is not covered by the vehicle warranty. Always use only as soon as possible and inflate the A Tire and Loading Information label tires to the recommended pressure the GM approved tire sealant shows the size of the original available through your dealer or shown on the Tire and Loading equipment tires and the correct Information label. See Vehicle Load included in the vehicle. 0 inflation pressure for the tires when Limits 248. they are cold. See Vehicle Load A message to check the pressure in Limits 0 248, for an example of the TPMS Malfunction Light and a specific tire displays in the Driver Tire and Loading Information label Message Information Center (DIC). The low and its location. Also see Tire tire pressure warning light and the Pressure 0 397. The TPMS will not function properly DIC warning message come on at if one or more of the TPMS sensors The TPMS can warn about a low are missing or inoperable. When the each ignition cycle until the tires are tire pressure condition but it does inflated to the correct inflation system detects a malfunction, the not replace normal tire low tire pressure warning light pressure. If the vehicle has DIC maintenance. See Tire Inspection buttons, tire pressure levels can be flashes for about one minute and 0 404, Tire Rotation 0 405 and Tires then stays on for the remainder of viewed. For additional information 0 389. and details about the DIC operation the ignition cycle. A DIC warning and displays, see Driver Information message also displays. The Center (DIC) (Uplevel and Denali Caution malfunction light and DIC warning Cluster) 0 160 or Driver Information message come on at each ignition Tire sealant materials are not all Center (DIC) (Base Level Cluster) cycle until the problem is corrected. 0 158. the same. A non-approved tire Some of the conditions that can sealant could damage the TPMS cause these to come on are: The low tire pressure warning light sensors. TPMS sensor damage may come on in cool weather when . One of the road tires has been the vehicle is first started, and then (Continued) replaced with the spare tire. The spare tire does not have a GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

402 Vehicle Care TPMS sensor. The malfunction other than those recommended 3. Place the vehicle in P (Park). light and the DIC message could prevent the TPMS from 4. Add air to the tire that is should go off after the road tire functioning properly. See Buying 0 underinflated. The turn signal is replaced and the sensor New Tires 408. lamp will flash. matching process is performed . Operating electronic devices or successfully. See "TPMS Sensor When the recommended being near facilities using radio pressure is reached, the horn Matching Process" later in this wave frequencies similar to the section. sounds once and the turn TPMS could cause the TPMS signal lamp will stop flashing . The TPMS sensor matching sensors to malfunction. and briefly turn solid. process was not done or not If the TPMS is not functioning completed successfully after Repeat these steps for all properly, it cannot detect or signal a underinflated tires that have rotating the tires. The low tire pressure condition. See malfunction light and the DIC illuminated the low tire pressure your dealer for service if the TPMS warning light. message should go off after malfunction light and DIC message successfully completing the come on and stay on. If the tire is overinflated by more sensor matching process. See than 35 kPa (5 psi), the horn will "TPMS Sensor Matching Tire Fill Alert (If Equipped) sound multiple times and the turn Process" later in this section. This feature provides visual and signal lamp will continue to flash for . One or more TPMS sensors are audible alerts outside the vehicle to eight seconds after filling stops. To missing or damaged. The help when inflating an underinflated release and correct the pressure, malfunction light and the DIC tire to the recommended cold tire while the turn signal lamp is still message should go off when the pressure. flashing, briefly press the center of TPMS sensors are installed and the valve stem. When the When the low tire pressure warning the sensor matching process is recommended pressure is reached, light comes on: performed successfully. See the horn sounds once. your dealer for service. 1. Park the vehicle in a safe, level If the turn signal lamp does not flash place. . Replacement tires or wheels do within 15 seconds after starting to not match the original equipment 2. Set the parking brake firmly. inflate the tire, the tire fill alert has tires or wheels. Tires and wheels not been activated or is not working. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 403 If the hazard warning flashers are TPMS Sensor Matching There are two minutes to match the on, the tire fill alert visual feedback Process first tire/wheel position, and will not work properly. five minutes overall to match all four Each TPMS sensor has a unique tire/wheel positions. If it takes The TPMS will not activate the tire identification code. The identification fill alert properly under the following longer, the matching process stops code needs to be matched to a new and must be restarted. conditions: tire/wheel position after rotating the . There is interference from an vehicle’s tires or replacing one or The TPMS sensor matching external device or transmitter. more of the TPMS sensors. Also, process is: the TPMS sensor matching process 1. Set the parking brake. . The air pressure from the should be performed after replacing inflation device is not sufficient a spare tire with a road tire 2. Turn the ignition on without to inflate the tire. containing the TPMS sensor. The starting the vehicle. . There is a malfunction in malfunction light and the DIC 3. Uplevel DIC Only: Make sure the TPMS. message should go off at the next the Tire Pressure info page ignition cycle. The sensors are . There is a malfunction in the option is turned on. The info matched to the tire/wheel positions, horn or turn signal lamps. pages on the DIC can be using a TPMS relearn tool, in the turned on and off through the . The identification code of the following order: driver side front tire, Settings menu. See Driver TPMS sensor is not registered to passenger side front tire, passenger Information Center (DIC) the system. side rear tire, and driver side rear. (Uplevel and Denali Cluster) 0 . The battery of the TPMS sensor See your dealer for service or to 160 or Driver Information is low. purchase a relearn tool. A TPMS Center (DIC) (Base Level relearn tool can also be purchased. Cluster) 0 158. If the tire fill alert does not operate See Tire Pressure Monitor 4. If the vehicle has an uplevel due to TPMS interference, move the Sensor Activation Tool at DIC, use the DIC controls on vehicle about 1 m (3 ft) back or www.gmtoolsandequipment.com or the right side of the steering forward and try again. If the tire fill call 1-800-GM TOOLS wheel to scroll to the Tire alert feature is not working, use a (1-800-468-6657). tire pressure gauge. Pressure screen under the DIC info page. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

404 Vehicle Care If the vehicle has a base level A horn chirp confirms that the Tire Inspection DIC, use the trip odometer sensor identification code has reset stem to scroll to the Tire been matched to this tire and We recommend that the tires, Pressure screen. wheel position. including the spare tire, if the 5. If the vehicle has an uplevel 8. Proceed to the passenger side vehicle has one, be inspected for signs of wear or damage at DIC, press and hold the V front tire, and repeat the least once a month. (Set/Reset) button located in procedure in Step 7. the center of the DIC controls. 9. Proceed to the passenger side Replace the tire if: If the vehicle has a base level rear tire, and repeat the . The indicators at three or procedure in Step 7. DIC, press and hold the trip more places around the tire odometer reset stem for about 10. Proceed to the driver side rear can be seen. five seconds. A message tire, and repeat the procedure asking if the process should in Step 7. The horn sounds two . There is cord or fabric begin should appear. Select times to indicate the sensor showing through the tire's yes and press the trip identification code has been rubber. odometer reset stem to confirm matched to the driver side rear . The tread or sidewall is the selection. tire, and the TPMS sensor cracked, cut, or snagged The horn sounds twice to matching process is no longer active. The TIRE LEARNING deep enough to show cord or signal the receiver is in relearn fabric. mode and the TIRE ACTIVE message on the DIC LEARNING ACTIVE message display screen goes off. . The tire has a bump, bulge, displays on the DIC screen. 11. Turn the vehicle off. or split. 6. Start with the driver side 12. Set all four tires to the . The tire has a puncture, cut, front tire. recommended air pressure or other damage that cannot 7. Place the relearn tool against level as indicated on the Tire be repaired well because of the tire sidewall, near the valve and Loading Information label. the size or location of the stem. Then press the button to damage. activate the TPMS sensor. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 405 Tire Rotation and “Wheel Nut Torque” under Capacities and Specifications Tires should be rotated every 0 461. 12 000 km (7,500 mi). See Maintenance Schedule 0 448. The outer tire on a dual wheel setup generally wears faster Tires are rotated to achieve a than the inner tire. Tires last uniform wear for all tires. The longer and wear more evenly if first rotation is the most they are rotated. See Tire important. Inspection 0 404 and Tire Anytime unusual wear is Rotation 0 405. Also see noticed, rotate the tires as soon Maintenance Schedule 0 448. as possible, check for proper tire Use this rotation pattern when inflation pressure, and check for rotating the tires if the vehicle { Warning damaged tires or wheels. If the has single rear wheels. unusual wear continues after the If the vehicle is operated with a rotation, check the wheel Dual Tire Rotation tire that is underinflated, the tire alignment. See When It Is Time When the vehicle is new, can overheat. An overheated tire for New Tires 0 407 and Wheel or whenever a wheel, wheel can lose air suddenly or catch Replacement 0 412. bolt, or wheel nut is replaced or fire. You or others could be serviced, check the wheel nut injured. Properly inflate all tires, torque after 160, 1 600, and including the spare. 10 000 km (100, 1,000, and 6,000 mi) of driving. For proper See Tire Pressure 0 397, for torque and wheel nut tightening information on proper tire information, see “Removing the inflation. Flat Tire and Installing the Spare Tire” under Tire Changing 0 415 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

406 Vehicle Care When installing dual wheels, check that the vent holes in the inner and outer wheels on each side are lined up. Adjust the front and rear tires to the recommended inflation pressure on the Tire and Loading Information label after the tires have been rotated. See Tire Pressure 0 397 and Vehicle Load Limits 0 248. Use this rotation pattern when Use this rotation pattern when Check that all wheel nuts are rotating the tires if the vehicle rotating the tires if the vehicle properly tightened. See “Wheel has dual rear wheels (except has polished forged aluminum Nut Torque” under Capacities polished forged aluminum dual rear wheels. The spare and Specifications 0 461. wheels). wheel can be used in any Vehicles with polished forged position in the event of a flat tire, { Warning aluminum dual wheels have and can be rotated with the rear three unique wheels; a front, a inner wheels. After the flat tire is Rust or dirt on a wheel, or on the rear outer and a rear inner. repaired, if the spare is not on parts to which it is fastened, can These wheels cannot be rotated one of the inner rear positions, it make wheel nuts become loose to another position, however, must be replaced by the correct after time. The wheel could come off and cause an accident. When they can be rotated from left to wheel in the front or rear outer positions. changing a wheel, remove any right to the same position. rust or dirt from places where the (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 407 “Storing a Flat or Spare Tire and Treadwear indicators are one way to Warning (Continued) Tools” under Tire Changing tell when it is time for new tires. 0 415. Treadwear indicators appear when wheel attaches to the vehicle. In the tires have only 1.6 mm (1/16 in) an emergency, a cloth or a paper When It Is Time for New or less of tread remaining. Some towel can be used; however, use commercial truck tires may not have a scraper or wire brush later to Tires treadwear indicators. See Tire remove all rust or dirt. Factors, such as maintenance, Inspection 0 404 and Tire Rotation 0 temperatures, driving speeds, 405 for additional information. Lightly coat the inner diameter of vehicle loading, and road conditions The rubber in tires ages over time. the wheel hub opening with affect the wear rate of the tires. This also applies to the spare tire, wheel bearing grease after a if the vehicle has one, even if it is wheel change or tire rotation to never used. Multiple factors prevent corrosion or rust including temperatures, loading build-up. Do not get grease on conditions, and inflation pressure maintenance affect how fast aging the flat wheel mounting surface takes place. GM recommends that or on the wheel nuts or bolts. tires, including the spare if Reset the Tire Pressure Monitor equipped, be replaced after six System (TPMS), if the vehicle years, regardless of tread wear. The has one. See Tire Pressure tire manufacture date is the last four Monitor Operation 0 400. digits of the DOT Tire Identification Number (TIN) which is molded into Check that the spare tire, if the one side of the tire sidewall. The vehicle has one, is stored first two digits represent the week properly. Push, pull, and then try (01-52) and the last two digits, the to rotate or turn the tire. If it year. For example, the third week of moves, tighten the cable. See the year 2010 would have a four-digit DOT date of 0310. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

408 Vehicle Care Vehicle Storage GM strongly recommends handling performance may be Tires age when stored normally buying tires with the same TPC adversely affected if all the tires mounted on a parked vehicle. Park Spec rating. are not replaced at the same a vehicle that will be stored for at GM's exclusive TPC Spec time. If proper rotation and least a month in a cool, dry, clean system considers over a dozen maintenance have been done, area away from direct sunlight to critical specifications that impact all four tires (six for dual rear slow aging. This area should be free wheels) should wear out at of grease, gasoline, or other the overall performance of the vehicle, including brake system about the same time. See Tire substances that can deteriorate Rotation 0 405 for information rubber. performance, ride and handling, traction control, and tire on proper tire rotation. However, Parking for an extended period can if it is necessary to replace only cause flat spots on the tires that pressure monitoring performance. GM's TPC Spec one axle set of worn tires, place may result in vibrations while the new tires on the rear axle driving. When storing a vehicle for number is molded onto the tire's sidewall near the tire size. If the (two for single rear wheels, four at least a month, remove the tires or for dual rear wheels). raise the vehicle to reduce the tires have an all-season tread weight from the tires. design, the TPC Spec number will be followed by MS for mud { Warning Buying New Tires and snow. See Tire Sidewall 0 Tires could explode during GM has developed and matched Labeling 391 for additional improper service. Attempting specific tires for the vehicle. The information. to mount or dismount a tire original equipment tires installed GM recommends replacing worn could cause injury or death. were designed to meet General tires in complete sets of four (six Only your dealer or authorized Motors Tire Performance Criteria for dual rear wheels). Uniform tire service center should Specification (TPC Spec) tread depth on all tires will help mount or dismount the tires. system rating. When to maintain the performance of replacement tires are needed, the vehicle. Braking and GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 409 Vehicles that have a tire { Warning { Warning pressure monitoring system Mixing tires of different sizes, Using bias-ply tires on the could give an inaccurate brands, or types may cause vehicle may cause the wheel low-pressure warning if non-TPC loss of control of the vehicle, rim flanges to develop cracks Spec rated tires are installed. resulting in a crash or other after many miles of driving. See Tire Pressure Monitor 0 vehicle damage. Use the A tire and/or wheel could fail System 399. correct size, brand, and type suddenly and cause a crash. The Tire and Loading of tires on all wheels. Use only radial-ply tires with Information label indicates the This vehicle may have a the wheels on the vehicle. original equipment tires on the different size spare than the vehicle. See Vehicle Load Limits 0 road tires originally installed Winter tires with the same speed 248 for the label location and on the vehicle. When new, the rating as the original equipment more information about the Tire vehicle included a spare tire tires may not be available for H, and Loading Information label. and wheel assembly with a V, W, Y and ZR speed rated similar overall diameter as the tires. Never exceed the winter Different Size Tires and road tires and wheels, so it is tires’ maximum speed capability Wheels all right to drive on it. The when using winter tires with a If wheels or tires are installed that spare tire was developed for lower speed rating. are a different size than the original use on this vehicle and will not If the vehicle tires must be equipment wheels and tires, vehicle affect vehicle handling. replaced with a tire that does not performance, including its braking, ride and handling characteristics, have a TPC Spec number, make stability, and resistance to rollover sure they are the same size, may be affected. If the vehicle has load range, speed rating, and electronic systems such as antilock construction (radial) as the brakes, rollover airbags, traction original tires. control, electronic stability control, GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

410 Vehicle Care or All-Wheel Drive, the performance (NHTSA), which grades tires by Quality grades can be found of these systems can also be treadwear, traction, and where applicable on the tire affected. temperature performance. This sidewall between tread shoulder applies only to vehicles sold in and maximum section width. For { Warning the United States. The grades example: are molded on the sidewalls of If different sized wheels are used, Treadwear 200 Traction AA most passenger car tires. The there may not be an acceptable Temperature A level of performance and safety if Uniform Tire Quality Grading (UTQG) system does not apply All Passenger Car Tires Must tires not recommended for those Conform to Federal Safety wheels are selected. This to deep tread, winter tires, compact spare tires, tires with Requirements In Addition To increases the chance of a crash These Grades. and serious injury. Only use GM nominal rim diameters of specific wheel and tire systems 10 to 12 inches (25 to 30 cm), Treadwear developed for the vehicle, and or to some limited-production The treadwear grade is a have them properly installed by a tires. GM certified technician. comparative rating based on the While the tires available on wear rate of the tire when tested General Motors passenger cars under controlled conditions on a 0 See Buying New Tires 408 and and light trucks may vary with specified government test Accessories and Modifications respect to these grades, they course. For example, a tire 0 343. must also conform to federal graded 150 would wear one and safety requirements and Uniform Tire Quality one-half (1½) times as well on additional General Motors Tire the government course as a tire Grading Performance Criteria (TPC) graded 100. The relative The following information relates standards. performance of tires depends to the system developed by the upon the actual conditions of United States National Highway their use, however, and may Traffic Safety Administration depart significantly from the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 411 norm due to variations in driving Temperature underinflation, or excessive habits, service practices and The temperature grades are A loading, either separately or in differences in road (the highest), B, and C, combination, can cause heat characteristics and climate. representing the tire's resistance buildup and possible tire failure. Traction to the generation of heat and its ability to dissipate heat when Wheel Alignment and Tire The traction grades, from tested under controlled Balance highest to lowest, are AA, A, B, conditions on a specified indoor and C. Those grades represent The tires and wheels were aligned laboratory test wheel. Sustained the tire's ability to stop on wet and balanced at the factory to high temperature can cause the provide the longest tire life and best pavement as measured under material of the tire to degenerate overall performance. Adjustments to controlled conditions on and reduce tire life, and wheel alignment and tire balancing specified government test excessive temperature can lead are not necessary on a regular surfaces of asphalt and to sudden tire failure. The grade basis. Consider an alignment check concrete. A tire marked C may if there is unusual tire wear or the C corresponds to a level of have poor traction performance. vehicle is significantly pulling to one performance which all Warning: The traction grade side or the other. Some slight pull to passenger car tires must meet assigned to this tire is based on the left or right, depending on the under the Federal Motor Safety straight-ahead braking traction crown of the road and/or other road Standard No. 109. Grades B and tests, and does not include surface variations such as troughs A represent higher levels of or ruts, is normal. If the vehicle is acceleration, cornering, performance on the laboratory vibrating when driving on a smooth hydroplaning, or peak traction test wheel than the minimum road, the tires and wheels may need characteristics. required by law. Warning: The to be rebalanced. See your dealer temperature grade for this tire is for proper diagnosis. established for a tire that is properly inflated and not overloaded. Excessive speed, GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

412 Vehicle Care Wheel Replacement Whenever a wheel, wheel bolt, { Warning or wheel nut is replaced on a dual Replace any wheel that is bent, wheel setup, check the wheel nut cracked, or badly rusted or Using the wrong replacement torque after 160,1 600, and corroded. If wheel nuts keep coming wheels, wheel bolts, or wheel 10 000 km (100,1,000, and loose, the wheel, wheel bolts and nuts can be dangerous. It could 6,000 mi) of driving. For proper wheel nuts should be replaced. affect the braking and handling of torque, see “Wheel Nut Torque” If the wheel leaks air, replace it. the vehicle. Tires can lose air, under Capacities and Specifications Some aluminum wheels can be and cause loss of control, causing 0 461. repaired. See your dealer if any of a crash. Always use the correct See If a Tire Goes Flat 0 413 for these conditions exist. wheel, wheel bolts, and wheel more information. Your dealer will know the kind of nuts for replacement. wheel that is needed. Used Replacement Wheels Each new wheel should have the { Warning same load-carrying capacity, Caution diameter, width, offset and be Replacing a wheel with a used mounted the same way as the one it The wrong wheel can also cause one is dangerous. How it has replaces. problems with bearing life, brake been used or how far it has been cooling, speedometer or Replace wheels, wheel bolts, wheel driven may be unknown. It could odometer calibration, headlamp nuts, or Tire Pressure Monitor fail suddenly and cause a crash. aim, bumper height, vehicle System (TPMS) sensors with new When replacing wheels, use a ground clearance, and tire or tire GM original equipment parts. new GM original equipment chain clearance to the body and wheel. chassis. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 413 Tire Chains Warning (Continued) Caution (Continued)

{ Warning and road conditions. Follow that tires. Install them on the tires of manufacturer's instructions. To the rear axle. Do not use chains If the vehicle has dual wheels or help avoid damage to the vehicle, on the tires of the front axle. 265/65R18, P265/65R18, drive slowly, readjust, or remove Tighten them as tightly as P275/55R20, LT265/70R17, the device if it is contacting the possible with the ends securely LT265/70R18, LT265/60R20, vehicle, and do not spin the fastened. Drive slowly and follow LT275/65R18, P285/50R20, vehicle's wheels. the chain manufacturer's 285/45R22, or P285/45R22 size If you do find traction devices that instructions. If you can hear the tires, do not use tire chains. They chains contacting the vehicle, can damage the vehicle because will fit, install them on the rear tires. stop and retighten them. If the there is not enough clearance. contact continues, slow down Tire chains used on a vehicle until it stops. Driving too fast or without the proper amount of spinning the wheels with chains clearance can cause damage to Caution on will damage the vehicle. the brakes, suspension, or other vehicle parts. The area damaged If the vehicle does not have dual by the tire chains could cause you wheels and has a tire size other If a Tire Goes Flat to lose control of the vehicle and than 265/65R18, P265/65R18, It is unusual for a tire to blowout you or others may be injured in a P275/55R20, LT265/70R17, while driving, especially if the tires crash. LT265/70R18, LT265/60R20, are maintained properly. If air goes Use another type of traction LT275/65R18, P285/50R20, out of a tire, it is much more likely to device only if its manufacturer 285/45R22, or P285/45R22, use leak out slowly. But if there ever is a recommends it for use on the tire chains only where legal and blowout, here are a few tips about vehicle and tire size combination only when you must. Use chains what to expect and what to do: that are the proper size for the (Continued) (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

414 Vehicle Care If a front tire fails, the flat tire If a tire goes flat, avoid further tire creates a drag that pulls the vehicle Warning (Continued) and wheel damage by driving slowly toward that side. Take your foot off to a level place, well off the road, the accelerator pedal and grip the that has been driven on while if possible. Turn on the hazard steering wheel firmly. Steer to severely underinflated or flat. warning flashers. See Hazard maintain lane position, and then Have your dealer or an authorized Warning Flashers 0 180. gently brake to a stop, well off the tire service center repair or road, if possible. replace the flat tire as soon as { Warning possible. A rear blowout, particularly on a curve, acts much like a skid and Changing a tire can be may require the same correction as dangerous. The vehicle can slip used in a skid. Stop pressing the { Warning off the jack and roll over or fall accelerator pedal and steer to causing injury or death. Find a straighten the vehicle. It may be Lifting a vehicle and getting under level place to change the tire. To very bumpy and noisy. Gently brake it to do maintenance or repairs is help prevent the vehicle from to a stop, well off the road, dangerous without the moving: if possible. appropriate safety equipment and 1. Set the parking brake firmly. training. If a jack is provided with { Warning the vehicle, it is designed only for 2. Put an automatic transmission in P (Park) or a changing a flat tire. If it is used for manual transmission in Driving on a flat tire will cause anything else, you or others could 1 (First) or R (Reverse). permanent damage to the tire. be badly injured or killed if the Re-inflating a tire after it has been vehicle slips off the jack. If a jack 3. For four-wheel-drive driven on while severely is provided with the vehicle, only vehicles, be sure the underinflated or flat may cause a use it for changing a flat tire. transfer case is in a drive blowout and a serious crash. gear– not in N (Neutral). Never attempt to re-inflate a tire (Continued) (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 415 2. Flat Tire 6. Jack Knob Warning (Continued) The following information explains 4. Turn off the engine and do how to use the jack and change not restart while the vehicle a tire. is raised. 5. Do not allow passengers to Tire Changing remain in the vehicle. Removing the Spare Tire and 6. Place wheel blocks, Tools if equipped, on both sides of the tire at the opposite corner of the tire being changed. Regular Cab When the vehicle has a flat tire (2), use the following example as a 1. Wing Nut Retaining Wheel guide to assist in the placement of Blocks the wheel blocks (1), if equipped. 2. Wheel Blocks 3. Wing Nut Retaining Tool Kit 4. Tool Kit 5. Jack Crew Cab 6. Jack Knob

1. Wheel Blocks 2. Wing Nut Retaining Wheel Blocks 3. Tool Kit 4. Wing Nut Retaining Tool Kit 1. Wheel Block (If Equipped) 5. Jack GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

416 Vehicle Care 2. Turn the wing nut 4. Hoist Assembly counterclockwise to remove the 5. Hoist Shaft wheel blocks and the wheel 6. Jack Handle Extensions block retainer. 7. Wheel Wrench 3. Turn the wing nut used to 8. Spare Tire Lock (If retain the storage bag and Equipped) tools counterclockwise to 9. Hoist Shaft Access Hole remove it. 10. Hoist End of Extension Tool Use the jack handle extensions and 1. Open the spare tire lock cover the wheel wrench to remove the on the bumper and use the underbody-mounted spare tire. ignition key to remove the Double Cab spare tire lock (8). To remove the spare tire lock, insert the 1. Wheel Blocks ignition key, turn, and pull 2. Wing Nut Retaining Tool Kit straight out. 3. Tool Kit 4. Jack 5. Jack Knob For regular cab models, the equipment you will need is behind the passenger seat. For double and crew cab models, the equipment is on the shelf behind the passenger side second row seat. 1. Spare Tire (Valve Stem 2. Assemble the wheel wrench (7) 1. Turn the knob on the jack Pointed Down) counterclockwise to lower the and the two jack handle 2. Tire/Wheel Retainer extensions (6), as shown. jack head to release the jack 3. Hoist Cable from its holder. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 417 5. Pull the spare tire out from 7. Put the spare tire near the under the vehicle. flat tire. Removing the Flat Tire and Installing the Spare Tire Use the following pictures and instructions to remove the flat tire and raise the vehicle.

3. Insert the hoist end (open end) (10) of the extension through the hole (9) in the rear bumper. 6. Tilt the tire toward the vehicle Do not use the chiseled end of with some slack in the cable to the wheel wrench. access the tire/wheel retainer. Be sure the hoist end of the extension (10) connects to the hoist shaft. The ribbed square end of the extension is used to lower the spare tire. 4. Turn the wheel wrench 1. Jack counterclockwise to lower the spare tire to the ground. 2. Wheel Blocks Continue to turn the wheel 3. Jack Handle wrench until the spare tire can Tilt the retainer and pull it 4. Jack Handle Extensions be pulled out from under the through the center of the wheel 5. Wheel Wrench vehicle. along with the cable and spring. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

418 Vehicle Care The tools you will be using include If the vehicle has a center cap the jack (1), the wheel blocks (2), with wheel nut caps, the wheel the jack handle (3), the jack handle nut caps are designed to stay extensions (4), and the wheel with the center cap after they wrench (5). are loosened. Remove the 1. Do a safety check before entire center cap. proceeding. See If a Tire Goes Flat 0 413.

3. Use the wheel wrench and turn it counterclockwise to loosen the wheel nuts. Do not remove the wheel nuts yet. If the wheel has a smooth center cap, place the chisel end of the wheel wrench in the slot on the wheel, and gently pry it out.

2. If the vehicle has wheel nut caps, loosen them by turning the wheel wrench counterclockwise. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 419

Front Position – 1500 Models Front Position – All Other Models Rear Position – 1500 Models 4. If the flat tire is on the front of If the flat tire is on the front of 5. If the flat tire is on the rear, for the vehicle (1500 models), the vehicle (all other models), 1500 models position the jack position the jack under the position the jack under the under the rear axle about 5 cm bracket attached to the vehicle, as shown. (2 in) inboard of the shock vehicle's frame, behind the flat absorber bracket. tire, as shown. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

420 Vehicle Care

{ Warning

Getting under a vehicle when it is lifted on a jack is dangerous. If the vehicle slips off the jack, you could be badly injured or killed. Never get under a vehicle when it is supported only by a jack.

Rear Position – All Other Models { Warning 7. Remove all the wheel nuts and For all other models, position take off the flat tire. the jack under the rear axle Raising the vehicle with the jack between the spring anchor and improperly positioned can { Warning the shock absorber bracket. damage the vehicle and even make the vehicle fall. To help Rust or dirt on a wheel, or on the If a snow plow has been added avoid personal injury and vehicle parts to which it is fastened, can to the front of the vehicle, lower damage, be sure to fit the jack lift the snow plow fully before make wheel nuts become loose raising the vehicle. head into the proper location after time. The wheel could come before raising the vehicle. off and cause an accident. When Make sure that the jack head is changing a wheel, remove any positioned so that the rear axle rust or dirt from places where the is resting securely between the 6. Turn the wheel wrench clockwise to raise the vehicle. wheel attaches to the vehicle. In grooves that are on the an emergency, a cloth or a paper jack head. Raise the vehicle far enough off the ground so there is (Continued) enough room for the spare tire to fit under the wheel well. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 421

Warning (Continued) { Warning Warning (Continued)

towel can be used; however, use Never use oil or grease on bolts If any stud is damaged because a scraper or wire brush later to or nuts because the nuts might of a loose-running wheel, it could remove all rust or dirt. come loose. The vehicle's wheel be that all of the studs are could fall off, causing a crash. damaged. To be sure, replace all studs on the wheel. If the stud 10. Put the wheel nuts back on holes in a wheel have become with the rounded end of the larger, the wheel could collapse in nuts toward the wheel. operation. Replace any wheel if its stud holes have become larger 11. Tighten each wheel nut by or distorted in any way. Inspect hand. Then use the wheel hubs and hub‐piloted wheels for wrench to tighten the nuts until damage. Because of loose the wheel is held against running wheels, piloting pad the hub. damage may occur and require 12. Turn the wheel wrench replacement of the entire hub, for counterclockwise to lower the proper centering of the wheels. vehicle. Lower the jack When replacing studs, hubs, 8. Remove any rust or dirt from completely. wheel nuts or wheels, be sure to the wheel bolts, mounting use GM original equipment parts. surfaces, and spare wheel. { Warning

9. Install the spare tire. If wheel studs are damaged, they can break. If all the studs on a wheel broke, the wheel could come off and cause a crash. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

422 Vehicle Care have a tire removed or serviced. { Warning Caution (Continued) See Capacities and Specifications 0 461. Wheel nuts that are improperly or torque specification. See incorrectly tightened can cause Capacities and Specifications When reinstalling the regular wheel the wheels to become loose or 0 461 for the wheel nut torque and tire, also reinstall either the come off. The wheel nuts should specification. center cap, or bolt-on hub cap, be tightened with a torque wrench depending on what the vehicle is to the proper torque specification equipped with. For center caps, place the cap on the wheel and tap after replacing. Follow the torque it into place until it seats flush with specification supplied by the the wheel. The cap only goes on aftermarket manufacturer when one way. Be sure to line up the tab using accessory locking wheel on the center cap with the nuts. See Capacities and indentation on the wheel. For 0 Specifications 461 for original bolt-on hub caps, align the plastic equipment wheel nut torque nut caps with the wheel nuts and specifications. then tighten by hand. Then use the wheel wrench to tighten. 13. Tighten the nuts firmly in a crisscross sequence, as Storing a Flat or Spare Tire Caution shown, by turning the wheel and Tools wrench clockwise. Improperly tightened wheel nuts can lead to brake pulsation and For vehicles with dual wheels, have { Warning a technician check the wheel nut rotor damage. To avoid expensive tightness of all wheels with a torque Storing a jack, a tire, or other brake repairs, evenly tighten the wrench after the first 160, 1 600 and equipment in the passenger wheel nuts in the proper 10 000 km (100, 1,000 and 6,000 mi). compartment of the vehicle could sequence and to the proper Repeat this service whenever you cause injury. In a sudden stop or (Continued) (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 423 7. Wheel Wrench Warning (Continued) Caution (Continued) 8. Spare Tire Lock (If Equipped) collision, loose equipment could road tire and wheel assembly 9. Hoist Shaft Access Hole strike someone. Store all these in must be installed on the tire hoist 10. Hoist End of Extension Tool the proper place. to use it. 1. Put the tire on the ground at the rear of the vehicle with the Store the tire under the rear of the valve stem pointed down, and vehicle in the spare tire carrier. Caution to the rear. Storing an aluminum wheel with a 2. Pull the cable and spring flat tire under your vehicle for an through the center of the extended period of time or with wheel. Tilt the wheel retainer the valve stem pointing up can plate down and through the damage the wheel. Always stow center wheel. the wheel with the valve stem Make sure the retainer is fully pointing down and have the seated across the underside of wheel/tire repaired as soon as the wheel. possible.

Caution 1. Spare Tire (Valve Stem The tire hoist can be damaged if Pointed Down) there is no tension on the cable 2. Tire/Wheel Retainer when using it. To have the 3. Hoist Cable necessary tension, the spare or 4. Hoist Assembly 5. Hoist Shaft (Continued) 6. Jack Handle Extensions GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

424 Vehicle Care 3. Attach the wheel wrench (7) 6. Raise the tire fully against the To store the jack and jack tools: and extensions (6) together, as underside of the vehicle by shown. turning the wheel wrench clockwise until you hear two clicks or feel it skip twice. You cannot overtighten the cable.

4. Insert the hoist end (10) through the hole (9) in the rear bumper and onto the hoist 1. Wing Nut Retaining Wheel shaft. Blocks 2. Wheel Blocks Do not use the chiseled end of 3. Wing Nut Retaining Tool Kit the wheel wrench. 4. Wheel Wrench and 5. Raise the tire part way upward. 7. Make sure the tire is stored Extensions securely. Push, pull, and then Make sure the retainer is 5. Tool Bag seated in the wheel opening. try to turn the tire. If the tire moves, use the wheel wrench 6. Jack Mounting Bracket to tighten the cable. 7. Jack 8. Bolt Retaining Wheel Blocks 8. Reinstall the spare tire lock, if the vehicle has one. 1. Put the tools (4) in the tool bag (5) and place them in the retaining bracket (3). 2. Tighten down the wing nut (3). GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 425 3. Assemble the wheel blocks (2) should not be driven on over four-wheel drive and a different size and jack (7) together with the 112 km/h (70 mph), or 88 km/h spare tire is installed, drive only in wing nut (1) and retaining (55 mph) when pulling a trailer, at two-wheel drive. bolt (8). the proper inflation pressure. Repair After installing the spare tire on the 4. Position the jack (7) in the and replace the road tire as soon as vehicle, stop as soon as possible mounting bracket (6). Position it is convenient, and stow the spare and check that the spare tire is the holes in the base of the tire for future use. correctly inflated. jack (7) onto the pin in the Caution Have the damaged or flat road tire mounting bracket (6). repaired or replaced and installed 5. Return them to their original If the vehicle has four-wheel drive back onto the vehicle as soon as location in the vehicle. See and a different size spare tire is possible so the spare tire will be “Removing the Spare Tire and installed, do not drive in available in case it is needed again. Tools.” four-wheel drive until the flat tire Do not mix tires and wheels of is repaired and/or replaced. The different sizes, because they will not Full-Size Spare Tire vehicle could be damaged and fit. Keep your spare tire and its If this vehicle came with a full-size the repairs would not be covered wheel together. If the vehicle has a spare tire, it was fully inflated when by the warranty. Never use spare tire that does not match the new, however, it can lose air over four-wheel drive when a different original road tires and wheels in size time. Check the inflation pressure size spare tire is installed on the and type, do not include the spare in regularly. See Tire Pressure 0 397 vehicle. the tire rotation. and Vehicle Load Limits 0 248. For instructions on how to remove, install, or store a spare tire, see Tire The vehicle may have a different Changing 0 415. size spare tire than the road tires originally installed on the vehicle. If equipped with a temporary use This spare tire was developed for full-size spare tire, it is indicated on use on this vehicle, so it is all right the tire sidewall. See Tire Sidewall to drive on it. If the vehicle has Labeling 0 391. This spare tire GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

426 Vehicle Care

Jump Starting Warning (Continued) Caution Jump Starting - North the State of California to cause Ignoring these steps could result America cancer. WASH HANDS AFTER in costly damage to the vehicle HANDLING. For more information that would not be covered by the For an eAssist vehicle, see the go to www.P65Warnings.ca.gov/ vehicle warranty. Trying to start Silverado/Sierra supplement. passenger-vehicle. the vehicle by pushing or pulling it For more information about the will not work, and it could damage vehicle battery, see Battery - North the vehicle. 0 See California Proposition America 369. 65 Warning 0 343 and the back If the vehicle's battery (or batteries) cover. 1. Check the other vehicle. has run down, you may want to use It must have a 12-volt battery another vehicle and some jumper { Warning with a negative ground system. cables to start your vehicle. Be sure to use the following steps to do it Batteries can hurt you. They can Caution safely. be dangerous because: . They contain acid that can If the other vehicle does not have { Warning burn you. a 12-volt system with a negative ground, both vehicles can be WARNING: Battery posts, . They contain gas that can damaged. Only use a vehicle that terminals, and related explode or ignite. has a 12-volt system with a accessories contain lead and lead . They contain enough negative ground for jump starting. compounds, chemicals known to electricity to burn you. the State of California to cause If you do not follow these steps cancer and birth defects or other 2. If you have a vehicle with a exactly, some or all of these diesel engine with two reproductive harm. Batteries also things can hurt you. batteries, you should know contain other chemicals known to before you begin that, (Continued) especially in cold weather, you GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 427 may not be able to get enough brake. If you have a 5. Open the hood on the other power from a single battery in four-wheel-drive vehicle, be vehicle and locate the another vehicle to start your sure the transfer case is in a positive (+) and negative (−) diesel engine. If your vehicle drive gear, not in N (Neutral). terminal locations on that has more than one battery, vehicle. using the battery that is closer Caution The positive (+) terminal is to the starter will reduce under a red plastic cover at the electrical resistance. This is If any accessories are left on or positive battery post. To located on the passenger side, plugged in during the jump uncover the positive (+) in the rear of the engine starting procedure, they could be terminal, open the red plastic compartment. damaged. The repairs would not cover. be covered by the vehicle 3. Get the vehicles close enough For more information on the warranty. Whenever possible, turn so the jumper cables can location of the remote off or unplug all accessories on reach, but be sure the vehicles positive (+) and remote are not touching each other. either vehicle when jump starting. negative (−) terminals, see If they are, it could cause an Engine Compartment Overview unwanted ground connection. 4. Turn the ignition off on both 0 345. You would not be able to start vehicles. Unplug unnecessary your vehicle, and the bad accessories plugged into the grounding could damage the { Warning accessory power outlets. Turn electrical systems. off the radio and all the lamps An electric fan can start up even To avoid the possibility of the that are not needed. This will when the engine is not running vehicles rolling, set the parking avoid sparks and help save and can injure you. Keep hands, brake firmly on both vehicles both batteries. And it could clothing, and tools away from any involved in the jump start save the radio! underhood electric fan. procedure. Put the automatic transmission in P (Park) or a manual transmission in Neutral before setting the parking GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

428 Vehicle Care 6. Check that the jumper cables { Warning do not have loose or missing insulation. If they do, you could Using a match near a battery can get a shock. The vehicles cause battery gas to explode. could be damaged too. People have been hurt doing this, and some have been blinded. Before you connect the cables, Use a flashlight if you need more here are some basic things you light. should know. Positive (+) will go to positive (+) or to a remote Battery fluid contains acid that positive (+) terminal if the can burn you. Do not get it on vehicle has one. Negative (−) you. If you accidentally get it in will go to a heavy, unpainted your eyes or on your skin, flush metal engine part or to a 5.3L Shown, 4.3L, 6.0L, 6.2L, and the place with water and get remote negative (−) terminal if 6.6L Similar the vehicle has one. medical help immediately. 7. Connect the red positive (+) Do not connect positive (+) to cable to the positive (+) negative (−) or you will get a terminal of the vehicle with the { Warning short that would damage the dead battery. battery and maybe other parts 8. Do not let the other end touch too. And do not connect the Fans or other moving engine metal. Connect it to the negative (−) cable to the parts can injure you badly. Keep positive (+) terminal of the negative (−) terminal on the your hands away from moving good battery. Use a remote dead battery because this can parts once the engine is running. positive (+) terminal if the cause sparks. vehicle has one. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 429 9. Connect the black negative (−) cable to the negative (−) terminal of the good battery. Use a remote negative (−) terminal if the vehicle has one. Do not let the other end touch anything until the next step. 10. Connect the other end of the negative (−) cable.

6.0L 6.6L ‐ To the generator bracket, on ‐ To the negative (−) post on the vehicle with the dead the auxiliary battery, on the battery. vehicle with the dead battery. 11. Start the vehicle with the good battery and run the engine for a while. 12. Try to start the vehicle that had the dead battery. If it will not 4.3L Shown, 5.3L and 6.2L Similar start after a few tries, it ‐ To the metal bracket that is probably needs service. bolted to the engine and supports the resonator, on the vehicle with the dead battery. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

430 Vehicle Care Front Attachment Points Caution Towing the Vehicle

If the jumper cables are Caution connected or removed in the wrong order, electrical shorting Incorrectly towing a disabled may occur and damage the vehicle may cause damage. The vehicle. The repairs would not be damage would not be covered by covered by the vehicle warranty. the vehicle warranty. Always connect and remove the Do not lash or hook to jumper cables in the correct order, suspension components. Use the making sure that the cables do proper straps around the tires to not touch each other or other secure the vehicle. metal. Use only a flatbed tow truck for The vehicle is equipped with Jumper Cable Removal towing a disabled vehicle. Never specific attachment points to be Reverse the sequence exactly when use a sling type lift or damage will used to pull the vehicle onto a removing the jumper cables. occur. Use ramps to help reduce flatbed car carrier from a flat road approach angles if necessary. surface. Do not use these After starting the disabled vehicle A towed vehicle should have its attachment points to pull the vehicle and removing the jumper cables, drive wheels off the ground. from snow, mud or sand. allow it to idle for several minutes. Consult a professional towing service if the disabled vehicle must Recreational Vehicle be towed. Towing Recreational vehicle towing means towing the vehicle behind another vehicle, such as a motor home. The two most common types of GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 431 recreational vehicle towing are Dinghy Towing Four-Wheel-Drive Vehicles dinghy and dolly towing. Dinghy towing is towing the vehicle with all Two-Wheel-Drive Vehicles four wheels on the ground. Dolly towing is towing the vehicle with two wheels on the ground and two wheels on a dolly. Follow the tow vehicle manufacturer’s instructions. See your dealer or trailering professional for additional advice and equipment recommendations.

Caution Only dinghy tow four-wheel-drive Use of a shield mounted in front vehicles with a two-speed transfer of the vehicle grille could restrict Caution case that have an N (Neutral) and a airflow and cause damage to the Four-Wheel Drive Low (4 (n) setting. transmission. The repairs would If the two-wheel-drive vehicle is not be covered by the vehicle towed with all four wheels on the { Warning warranty. If using a shield, only ground, the drivetrain use one that attaches to the components could be damaged. Shifting a four-wheel-drive towing vehicle. The repairs would not be covered vehicle's transfer case into by the vehicle warranty. N (Neutral) can cause the vehicle to roll even if the transmission is in P (Park). You or others could Two-wheel-drive vehicles should not be towed with all four wheels on the (Continued) ground. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

432 Vehicle Care 9. With a foot on the brake pedal, Warning (Continued) Caution release the parking brake. Keep the ignition key in the be injured. Set the parking brake Failure to disconnect the negative towed vehicle in ACC/ before shifting the transfer case battery cable or to have it contact ACCESSORY to prevent the to N (Neutral). the terminals can cause damage steering column from locking. to the vehicle. Disconnecting the Towed Vehicle To dinghy tow: 6. Disconnect the negative Before disconnecting the towed 1. Position the vehicle being vehicle: towed behind the tow vehicle, battery cable at the battery and facing forward and on a level secure the nut and bolt. Cover 1. Park on a level surface. surface. the negative battery post with a non-conductive material to 2. Set the parking brake, then 2. Securely attach the vehicle prevent any contact with the shift the transmission to being towed to the tow vehicle. negative battery terminal. P (Park), and turn the ignition key off. 3. Apply the parking brake and 7. Shift the transmission to start the engine. P (Park). 3. Connect the battery. 4. Shift the transfer case to 4. Apply the brake pedal. N (Neutral). See “Shifting into Caution 5. Turn the ignition on with the N (Neutral)” under Four-Wheel engine off. Shift the transfer Drive 0 272. Check that the If the steering column is locked, case out of N (Neutral) to vehicle is in N (Neutral) by vehicle damage may occur. Two-Wheel Drive High. See shifting the transmission to “Shifting out of N (Neutral)” R (Reverse) and then to D 8. Move the steering wheel to under Four-Wheel Drive 0 272. (Drive). There should be no make sure the steering column See your dealer if the transfer movement of the vehicle while is unlocked. case cannot be shifted out of shifting. N (Neutral). 5. Turn the engine off. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 433 6. Check that the vehicle is in Dolly Towing Two-wheel-drive vehicles should not Two-Wheel Drive High by be towed with the rear wheels on shifting the transmission to Front Towing (Front Wheels Off the ground. Two-wheel-drive R (Reverse) and then to D the Ground) – Two-Wheel-Drive transmissions have no provisions (Drive). There should be Vehicles for internal lubrication while being movement of the vehicle while towed. shifting. To dolly tow a two-wheel-drive 7. Shift the transmission to vehicle, the vehicle must be towed P (Park) and turn off the with the rear wheels on the dolly. ignition. See “Rear Towing (Rear Wheels Off 8. Disconnect the vehicle from the the Ground)” later in this section. tow vehicle. Front Towing (Front Wheels Off 9. Release the parking brake. the Ground) – Four-Wheel-Drive Vehicles 10. Reset any lost presets. The outside temperature display will default to 0 °C (32 °F) but will reset with normal usage. Caution If a two-wheel-drive vehicle is towed with the rear wheels on the ground, the transmission could be damaged. The repairs would not be covered by the vehicle warranty. Never tow the vehicle with the rear wheels on the ground. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

434 Vehicle Care To dolly tow a four-wheel-drive 5. Use a clamping device Rear Towing (Rear Wheels Off vehicle from the front: designed for towing to ensure the Ground) that the front wheels are locked 1. Attach the dolly to the tow Two-Wheel-Drive Vehicles vehicle following the dolly into the straight position. manufacturer's instructions. 6. Secure the vehicle to the dolly 2. Drive the front wheels onto the following the manufacturer's dolly. instructions. 3. Shift the transmission to 7. Shift the transfer case to P (Park). N (Neutral). See “Shifting into N (Neutral)” under Four-Wheel 4. Set the parking brake. Drive 0 272 for the proper procedure. { Warning 8. Release the parking brake only after the vehicle being towed is Shifting a four-wheel-drive firmly attached to the tow vehicle's transfer case into vehicle. N (Neutral) can cause the vehicle To dolly tow a two-wheel-drive to roll even if the transmission is 9. Turn the ignition off. vehicle from the rear: in P (Park). You or others could 1. Drive the rear wheels onto the be injured. Set the parking brake dolly. before shifting the transfer case to N (Neutral). 2. Set the parking brake. See Parking Brake 0 281. 3. Put the transmission in P (Park). 4. Secure the vehicle to the dolly following the manufacturer's instructions. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 435 5. Use a clamping device To dolly tow a four-wheel-drive Appearance Care designed for towing to ensure vehicle from the rear: that the front wheels are locked 1. Drive the rear wheels onto the Exterior Care into the straight position. dolly. Locks 6. Turn the ignition off. 2. Set the parking brake. See Four-Wheel-Drive Vehicles Parking Brake 0 281. Locks are lubricated at the factory. Use a de-icing agent only when 3. Put the transmission in absolutely necessary, and have the { Warning P (Park). locks greased after using. See Shifting a four-wheel-drive 4. Secure the vehicle to the dolly Recommended Fluids and 0 vehicle's transfer case into following the manufacturer's Lubricants 456. instructions. N (Neutral) can cause the vehicle Washing the Vehicle to roll even if the transmission is 5. Use a clamping device in P (Park). You or others could designed for towing to ensure To preserve the vehicle's finish, be injured. Set the parking brake that the front wheels are locked wash it often and out of direct sunlight. before shifting the transfer case into the straight position. to N (Neutral). 6. Shift the transfer case to N (Neutral). See “Shifting into { Warning N (Neutral) under Four-Wheel ” Do not power wash any part of Drive 0 272 for the proper the vehicle s interior, including the procedure. ’ vinyl floor covering. This could 7. Turn the ignition off. damage safety and other systems in the vehicle, which would not be covered by the vehicle warranty. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

436 Vehicle Care Dry the finish with a soft, clean Caution Caution chamois or an all-cotton towel to avoid surface scratches and water Do not use petroleum-based, Do not power wash any spotting. acidic, or abrasive cleaning component under the hood that agents as they can damage the has this e symbol. Finish Care vehicle's paint, metal, or plastic Application of aftermarket clearcoat parts. If damage occurs, it would This could cause damage that would not be covered by the sealant/wax materials is not not be covered by the vehicle recommended. If painted surfaces vehicle warranty. warranty. Approved cleaning are damaged, see your dealer to products can be obtained from have the damage assessed and your dealer. Follow all If using an automatic car wash, repaired. Foreign materials such as manufacturer directions regarding follow with the car wash calcium chloride and other salts, ice correct product usage, necessary instructions. The windshield wiper melting agents, road oil and tar, tree safety precautions, and and rear window wiper, if equipped, sap, bird droppings, chemicals from appropriate disposal of any must be turned off. Remove any industrial chimneys, etc., can vehicle care product. accessories that may be damaged damage the vehicle's finish if they or interfere with the car wash remain on painted surfaces. Wash equipment. the vehicle as soon as possible. 0 If necessary, use non-abrasive Caution See Power Assist Steps 43 for cleaning information. cleaners that are marked safe for painted surfaces to remove foreign Avoid using high-pressure Rinse the vehicle well, before matter. washes closer than 30 cm (12 in) washing and after, to remove all to the surface of the vehicle. Use cleaning agents completely. If they of power washers exceeding are allowed to dry on the surface, 8,274 kPa (1,200 psi) can result they could stain. in damage or removal of paint and decals. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 437 Occasional hand waxing or mild Protecting Exterior Bright Metal . Always dilute a concentrated polishing should be done to remove Moldings cleaner according to the residue from the paint finish. See manufacturer’s instructions. your dealer for approved cleaning Caution . Do not use cleaners that are not products. intended for automotive use. Failure to clean and protect the Do not apply waxes or polishes to . Use a nonabrasive wax on the uncoated plastic, vinyl, rubber, bright metal moldings can result in a hazy white finish or pitting. vehicle after washing to protect decals, simulated wood, or flat paint and extend the molding finish. as damage can occur. This damage would not be covered by the vehicle warranty. Spray-In Bedliner Care Caution A spray-in bedliner is a permanent The bright metal moldings on the coating that bonds to the truck bed Machine compounding or vehicle are aluminum, chrome or and cannot be removed. Promptly aggressive polishing on a stainless steel. To prevent damage rinse the bedliner surface following basecoat/clearcoat paint finish always follow these cleaning a chemical spill to avoid permanent may damage it. Use only instructions: damage. non-abrasive waxes and polishes . Be sure the molding is cool to Spray-in bedliners can fade from that are made for a basecoat/ the touch before applying any oxidation, road dirt, heavy-duty clearcoat paint finish on the cleaning solution. hauling, and hard water stains. vehicle. . Use only approved cleaning Clean it periodically by washing off solutions for aluminum, chrome the loose dirt and using a mild To keep the paint finish looking new, or stainless steel. Some detergent. To restore the original keep the vehicle garaged or cleaners are highly acidic or appearance, apply the bedliner covered whenever possible. contain alkaline substances and conditioner available through your can damage the moldings. dealer. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

438 Vehicle Care . Washer fluids and other cleaning Caution agents in higher concentrations Caution (Continued) than suggested by the Using silicone-based products manufacturer. non-uniform finish. Clean low may damage the bedliner, reduce gloss stripes with soap and the slip-resistant texture, and . Solvents, alcohols, fuels, water only. attract dirt. or other harsh cleaners. . Ice scrapers or other hard items. Air Intakes Aftermarket appearance caps or Cleaning Exterior Lamps/ . Clear debris from the air intakes, covers while the lamps are Lenses, Emblems, Decals and between the hood and windshield, illuminated, due to excessive Stripes when washing the vehicle. heat generated. Use only lukewarm or cold water, a Windshield and Wiper Blades soft cloth, and a car washing soap to clean exterior lamps, lenses, Caution Clean the outside of the windshield with glass cleaner. emblems, decals and stripes. Follow Failure to clean lamps properly instructions under "Washing the can cause damage to the lamp Clean rubber blades using a lint-free Vehicle" previously in this section. cover that would not be covered cloth or paper towel soaked with Lamp covers are made of plastic, by the vehicle warranty. windshield washer fluid or a mild and some have a UV protective detergent. Wash the windshield coating. Do not clean or wipe them thoroughly when cleaning the while they are dry. blades. Bugs, road grime, sap, and Caution a buildup of vehicle wash/wax Do not use any of the following on treatments may cause wiper lamp covers: Using wax on low gloss black streaking. . Abrasive or caustic agents. finish stripes can increase the gloss level and create a (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 439 Replace the wiper blades if they are worn or damaged. Damage can be Caution (Continued) Caution caused by extreme dusty conditions, sand, salt, heat, sun, or tires. When applying a tire To avoid surface damage, do not snow, and ice. dressing, always wipe off any use strong soaps, chemicals, overspray from all painted abrasive polishes, cleaners, Weatherstrips surfaces on the vehicle. brushes, or cleaners that contain Apply weatherstrip lubricant on acid on aluminum or weatherstrips to make them last Wheels and Trim Aluminum chrome-plated wheels. Use only — approved cleaners. Also, never longer, seal better, and not stick or or Chrome squeak. Lubricate weatherstrips drive a vehicle with aluminum or once a year. Hot, dry climates may Use a soft, clean cloth with mild chrome-plated wheels through an require more frequent application. soap and water to clean the wheels. automatic car wash that uses Black marks from rubber material on After rinsing thoroughly with clean silicone carbide tire cleaning painted surfaces can be removed by water, dry with a soft, clean towel. brushes. Damage could occur rubbing with a clean cloth. See A wax may then be applied. and the repairs would not be Recommended Fluids and covered by the vehicle warranty. Lubricants 0 456. Caution

Tires Chrome wheels and other chrome Brake System Use a stiff brush with tire cleaner to trim may be damaged if the Visually inspect brake lines and clean the tires. vehicle is not washed after driving hoses for proper hook-up, binding, on roads that have been sprayed leaks, cracks, chafing, etc. Inspect Caution with magnesium, calcium, disc brake pads for wear and rotors or sodium chloride. These for surface condition. Inspect drum Using petroleum-based tire chlorides are used on roads for brake linings/shoes for wear or dressing products on the vehicle conditions such as ice and dust. cracks. Inspect all other brake parts. may damage the paint finish and/ Always wash the chrome with (Continued) soap and water after exposure. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

440 Vehicle Care Steering, Suspension, and other debris can collect. If equipped Chassis Components Caution with power assist steps, extend them and then use a high pressure Visually inspect steering, Lubrication of applicable steering/ wash to clean all joints and gaps. suspension, and chassis suspension points should not be components for damaged, loose, done unless the temperature is Do not directly power wash the or missing parts or signs of wear at −12 °C (10 °F) or higher, transfer case and/or front/rear axle least once a year. or damage could result. output seals. High pressure water can overcome the seals and Inspect power steering for proper contaminate the fluid. Contaminated attachment, connections, binding, For an eAssist vehicle, see the fluid will decrease the life of the leaks, cracks, chafing, etc. Silverado/Sierra eAssist transfer case and/or axles and Visually check constant velocity joint supplement. should be replaced. boots and axle seals for leaks. Body Component Lubrication Sheet Metal Damage 1500 Series vehicles, at least every Lubricate all key lock cylinders, other oil change lubricate the outer If the vehicle is damaged and hood hinges, liftgate hinges, and the tie rod ends. requires sheet metal repair or steel fuel door hinge unless the replacement, make sure the body 2500/3500 Series vehicles, at least components are plastic. Applying repair shop applies anti-corrosion every other engine oil change silicone grease on weatherstrips material to parts repaired or lubricate the upper and lower with a clean cloth will make them replaced to restore corrosion control arm ball joints. Control arm last longer, seal better, and not stick protection. ball joints on 1500 series vehicles or squeak. are maintenance-free. Original manufacturer replacement Underbody Maintenance parts will provide the corrosion 2500/3500 Series vehicles equipped protection while maintaining the At least twice a year, spring and fall, with steering linkage, at least every vehicle warranty. other engine oil change lubricate the use plain water to flush any tie rod ball joints, idler arm pivot corrosive materials from the shaft bearings, idler arm socket, and underbody. Take care to thoroughly pitman arm socket. clean any areas where mud and GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 441 Finish Damage hand lotions, sunscreen, and insect . Do not use laundry detergents or repellent from all interior surfaces or dishwashing soaps with Quickly repair minor chips and permanent damage may result. degreasers. For liquid cleaners, scratches with touch-up materials use approximately 20 drops per available from your dealer to avoid Use cleaners specifically designed 3.8 L (1 gal) of water. corrosion. Larger areas of finish for the surfaces being cleaned to A concentrated soap solution will damage can be corrected in your prevent permanent damage. Apply create streaks and attract dirt. dealer's body and paint shop. cleaners directly to the cleaning cloth. Do not spray cleaners on any Do not use solutions that contain Chemical Paint Spotting switches or controls. Remove strong or caustic soap. Airborne pollutants can fall upon cleaners quickly. . Do not heavily saturate the and attack painted vehicle surfaces Before using cleaners, read and upholstery when cleaning. causing blotchy, ring-shaped follow all safety instructions on the . Do not use solvents or cleaners discolorations, and small, irregular label. While cleaning the interior, containing solvents. dark spots etched into the paint open the doors and windows to get surface. Refer to “Finish Care” proper ventilation. Interior Glass previously in this section. To prevent damage, do not clean To clean, use a terry cloth fabric dampened with water. Wipe droplets Interior Care the interior using the following cleaners or techniques: left behind with a clean dry cloth. To prevent dirt particle abrasions, If necessary, use a commercial . Never use a razor or any other regularly clean the vehicle's interior. glass cleaner after cleaning with sharp object to remove soil from plain water. Immediately remove any soils. any interior surface. Newspapers or dark garments can transfer color to the vehicle’s . Never use a brush with stiff interior. bristles. Use a soft bristle brush to remove . Never rub any surface dust from knobs and crevices on the aggressively or with too much instrument cluster. Using a mild pressure. soap solution, immediately remove GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

442 Vehicle Care Fabric/Carpet/Suede to a clean area frequently to Caution prevent forcing the soil in to the Start by vacuuming the surface fabric. To prevent scratching, never use using a soft brush attachment. If a abrasive cleaners on automotive rotating vacuum brush attachment is 4. Continue gently rubbing the glass. Abrasive cleaners or being used, only use it on the floor soiled area until there is no aggressive cleaning may damage carpet. Before cleaning, gently longer any color transfer from the rear window defogger. remove as much of the soil as the soil to the cleaning cloth. possible: 5. If the soil is not completely removed, use a mild soap Cleaning the windshield with water . Gently blot liquids with a paper during the first three to six months towel. Continue blotting until no solution followed only by plain of ownership will reduce tendency more soil can be removed. water. to fog. . For solid soils, remove as much If the soil is not completely as possible prior to vacuuming. removed, it may be necessary to Speaker Covers use a commercial upholstery To clean: Vacuum around a speaker cover cleaner or spot lifter. Test a small gently, so that the speaker will not 1. Saturate a clean, lint-free hidden area for colorfastness before be damaged. Clean spots with water colorfast cloth with water. using a commercial upholstery and mild soap. Microfiber cloth is cleaner or spot lifter. If ring recommended to prevent lint formation occurs, clean the entire Coated Moldings transfer to the fabric or carpet. fabric or carpet. Coated moldings should be cleaned. 2. Remove excess moisture by After cleaning use a paper towel to . When lightly soiled, wipe with a gently wringing until water does blot excess moisture. sponge or soft, lint-free cloth not drip from the cleaning cloth. dampened with water. 3. Start on the outside edge of the . When heavily soiled, use warm soil and gently rub toward the soapy water. center. Fold the cleaning cloth GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 443 Cleaning High Gloss Surfaces Instrument Panel, Leather, and Vehicle Information and Vinyl, Other Plastic Surfaces, Caution (Continued) Radio Displays Low Gloss Paint Surfaces and the appearance and feel of Use a microfiber cloth on high gloss Natural Open Pore Wood leather or soft trim, and are not surfaces or vehicle displays. First, Surfaces recommended. use a soft bristle brush to remove Use a soft microfiber cloth dirt that can scratch the surface. dampened with water to remove Do not use cleaners that increase Then gently clean by rubbing with a dust and loose dirt. For a more gloss, especially on the instrument microfiber cloth. Never use window thorough cleaning, use a soft panel. Reflected glare can decrease cleaners or solvents. Periodically microfiber cloth dampened with a visibility through the windshield hand wash the microfiber cloth mild soap solution. under certain conditions. separately, using mild soap. Do not use bleach or fabric softener. Rinse Caution thoroughly and air dry before Caution next use. Soaking or saturating leather, Use of air fresheners may cause especially perforated leather, as permanent damage to plastics Caution well as other interior surfaces, and painted surfaces. If an air may cause permanent damage. Do not attach a device with a freshener comes in contact with Wipe excess moisture from these any plastic or painted surface in suction cup to the display. This surfaces after cleaning and allow may cause damage and would the vehicle, blot immediately and them to dry naturally. Never use clean with a soft cloth dampened not be covered by the vehicle heat, steam, or spot removers. Do warranty. with a mild soap solution. not use cleaners that contain Damage caused by air fresheners silicone or wax-based products. would not be covered by the Cleaners containing these vehicle warranty. solvents can permanently change (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

444 Vehicle Care Care of Seat Belts . Do not use a floor mat if the Warning (Continued) vehicle is not equipped with a Keep belts clean and dry. floor mat retainer on the driver and injury. Make sure the floor side floor. { Warning mat does not interfere with the pedals. . Use the floor mat with the Do not bleach or dye seat belt correct side up. Do not turn webbing. It may severely weaken it over. Use the following guidelines for the webbing. In a crash, they proper floor mat usage: . Do not place anything on top of might not be able to provide the driver side floor mat. adequate protection. Clean and . The original equipment floor mats were designed for your . Use only a single floor mat on rinse seat belt webbing only with the driver side. mild soap and lukewarm water. vehicle. If the floor mats need Allow the webbing to dry. replacing, it is recommended . Do not place one floor mat on that GM certified floor mats be top of another. purchased. Non-GM floor mats Floor Mats may not fit properly and may Removing and Replacing the interfere with the pedals. Always Floor Mats { Warning check that the floor mats do not Pull up on the rear of the driver side interfere with the pedals. floor mat to unlock each retainer If a floor mat is the wrong size or and remove. is not properly installed, it can interfere with the pedals. Interference with the pedals can cause unintended acceleration and/or increased stopping distance which can cause a crash (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Vehicle Care 445

Reinstall by lining up the floor mat retainer openings over the carpet retainers and snapping into position. Make sure the floor mat is properly secured in place. Verify the floor mat does not interfere with the pedals. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

446 Service and Maintenance General Information Your dealer recognizes the Service and importance of providing Maintenance This maintenance section applies to competitively priced maintenance vehicles with a gasoline engine. For and repair services. With trained diesel engine vehicles, see technicians, the dealer is the place General Information "Maintenance Schedule" in the for routine maintenance such as oil General Information ...... 446 Duramax diesel supplement. changes and tire rotations and Your vehicle is an important additional maintenance items like Maintenance Schedule investment. This section describes tires, brakes, batteries, and wiper Maintenance Schedule ...... 448 the required maintenance for the blades. Special Application Services vehicle. Follow this schedule to help Special Application protect against major repair Caution Services ...... 453 expenses resulting from neglect or inadequate maintenance. It may Damage caused by improper Additional Maintenance also help to maintain the value of maintenance can lead to costly and Care the vehicle if it is sold. It is the repairs and may not be covered Additional Maintenance responsibility of the owner to have by the vehicle warranty. and Care ...... 453 all required maintenance performed. Maintenance intervals, checks, Your dealer has trained technicians inspections, recommended fluids, Recommended Fluids, and lubricants are important to Lubricants, and Parts who can perform required maintenance using genuine keep the vehicle in good working Recommended Fluids and condition. Lubricants ...... 456 replacement parts. They have Maintenance Replacement up-to-date tools and equipment for Do not have chemical flushes that Parts ...... 458 fast and accurate diagnostics. Many are not approved by GM dealers have extended evening and performed on the vehicle. The Maintenance Records Saturday hours, courtesy use of flushes, solvents, cleaners, Maintenance Records ...... 459 transportation, and online or lubricants that are not scheduling to assist with service needs. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Service and Maintenance 447 . Are driven on reasonable road Caution (Continued) surfaces within legal driving { Warning limits. approved by GM could damage Performing maintenance work can the vehicle, requiring expensive . Use the recommended fuel. See be dangerous and can cause 0 repairs that are not covered by Fuel 299. serious injury. Perform the vehicle warranty. Refer to the information in the maintenance work only if the Maintenance Schedule Additional required information, proper tools, The Tire Rotation and Required Required Services - Normal chart. and equipment are available. Services are the responsibility of the The Additional Required Services - If they are not, see your dealer to vehicle owner. It is recommended to Severe are for vehicles that are: have a trained technician do the have your dealer perform these work. See Doing Your Own . Mainly driven in heavy city traffic services every 12 000 km/7,500 mi. Service Work 0 344. in hot weather Proper vehicle maintenance helps to keep the vehicle in good working . Mainly driven in hilly or condition, improves fuel economy, mountainous terrain and reduces vehicle emissions. . Frequently towing a trailer Because of the way people use . Used for high speed or vehicles, maintenance needs vary. competitive driving There may need to be more frequent checks and services. The . Used for taxi, police, or delivery Additional Required Services - service Normal are for vehicles that: Refer to the information in the . Carry passengers and cargo Maintenance Schedule Additional within recommended limits on Required Services - Severe chart. the Tire and Loading Information label. See Vehicle Load Limits 0 248. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

448 Service and Maintenance Maintenance filter must be changed at least once Replacement may also be needed if a year and the oil life system must there is a reduction in air flow, Schedule be reset. Your trained dealer excessive window fogging, or odors. technician can perform this work. Owner Checks and Services If the engine oil life system is reset Tire Rotation and Required Services Every 12 000 km/ At Each Fuel Stop accidentally, service the vehicle within 5 000 km/3,000 mi since the 7,500 mi . Check the engine oil level. See last service. Reset the oil life Engine Oil 0 350. Rotate the tires, if recommended for system when the oil is changed. the vehicle, and perform the 0 Once a Month See Engine Oil Life System 353. following services. See Tire 0 . Check the tire inflation Passenger Compartment Air Rotation 405. pressures. See Tire Pressure Filter . Check engine oil level and oil 0 397. life percentage. If needed, The passenger compartment air change engine oil and filter, and . Inspect the tires for wear. See filter removes dust, pollen, and reset oil life system. See Engine Tire Inspection 0 404. other airborne irritants from outside Oil 0 350 and Engine Oil Life air that is pulled into the vehicle. . Check the windshield washer System 0 353. fluid level. See Washer Fluid The filter should be replaced as part 0 366. of routine scheduled maintenance. . Check engine coolant level. See Inspect the passenger compartment Cooling System 0 359. Engine Oil Change air filter every 36 000 km/ . Check windshield washer fluid When the CHANGE ENGINE OIL 22,500 miles or two years, level. See Washer Fluid 0 366. SOON message displays, have the whichever comes first. Replace if necessary. More frequent . Visually inspect windshield wiper engine oil and filter changed within blades for wear, cracking, the next 1 000 km/600 mi. If driven replacement may be needed if the vehicle is driven in areas with heavy or contamination. See Exterior under the best conditions, the Care 0 435. Replace worn or engine oil life system may not traffic, areas with poor air quality, or areas with high dust levels. damaged wiper blades. See indicate the need for vehicle service Wiper Blade Replacement for up to a year. The engine oil and 0 375. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Service and Maintenance 449 . Check tire inflation pressures. . Visually inspect fuel system for . Check accelerator pedal for See Tire Pressure 0 397. damage or leaks. damage, high effort, or binding. . Inspect tire wear. See Tire . Visually inspect exhaust system Replace if needed. Inspection 0 404. and nearby heat shields for . Visually inspect gas strut for . Visually check for fluid leaks. loose or damaged parts. signs of wear, cracks, or other damage. Check the hold open . Inspect engine air cleaner filter. . Lubricate body components. See Exterior Care 0 435. ability of the strut. If the hold See Engine Air Cleaner/Filter open ability is low, service the 0 358. . Check starter switch. See Starter gas strut. See Gas Strut(s) 0 0 . Inspect brake system. See Switch Check 374. 376. Exterior Care 0 435. . Check automatic transmission . Inspect sunroof track and seal, 0 . Visually inspect steering, shift lock control function. See if equipped. See Sunroof 55. Automatic Transmission Shift suspension, and chassis . Verify spare tire key lock components for damaged, loose, Lock Control Function Check 0 374. operation and lubricate as or missing parts or signs of wear needed. See Tire Changing at least once a year. See . Check ignition transmission lock. 0 415. Exterior Care 0 435. Lubricate See Ignition Transmission Lock the suspension and steering Check 0 374. components at least every other . Check parking brake and oil change. (If equipped with automatic transmission park grease fittings) mechanism. See Park Brake and . Check restraint system P (Park) Mechanism Check components. See Safety System 0 375. Check 0 75. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

450 Service and Maintenance

Maintenance Schedule

Additional Required 12 000 km/7,500 mi 24 000 km/15,000 mi 36 000 km/22,500 mi 48 000 km/30,000 mi 60 000 km/37,500 mi 72 000 km/45,000 mi 84 000 km/52,500 mi 96 000 km/60,000 mi 108 000 km/67,500 mi 120 000 km/75,000 mi 132 000 km/82,500 mi 144 000 km/90,000 mi 156 000 km/97,500 mi 180 000 km/112,500 mi Services - Normal 168 000 km/105,000 mi 192 000 km/120,000 mi 204 000 km/127,500 mi 216 000 km/135,000 mi 228 000 km/142,500 mi 240 000 km/150,000 mi

Rotate tires and perform Required Services. Check engine oil level and oil life percentage. @@@@@@@@@@@@@@@@@@@@ Change engine oil and filter, if needed. Replace passenger compartment air filter. (1) @ @ @ @ @ @ Inspect evaporative control system. (2) @ @ @ Replace engine air cleaner filter. (3) @ @ @ Replace spark plugs. Inspect spark plug wires. @ For GVW under 3 900 kg (8,600 lb), change @ transfer case fluid, if equipped with 4WD. (4) For GVW over 3 900 kg (8,600 lb), change @ @ @ transfer case fluid, if equipped with 4WD. (4) Drain and fill engine cooling system. (5) @ Visually inspect accessory drive belts. (6) @ Replace brake fluid. (7) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Service and Maintenance 451 Footnotes — Maintenance (2) Visually check all fuel and vapor (5) Or every five years, whichever Schedule Additional Required lines and hoses for proper comes first. See Cooling System Services — Normal attachment, connection, routing, and 0 359. (1) Or every two years, whichever condition. (6) Or every 10 years, whichever comes first. More frequent (3) Or every four years, whichever comes first. Inspect for fraying, replacement may be needed if the comes first. If driving in dusty excessive cracking, or damage; vehicle is driven in areas with heavy conditions, inspect the filter at each replace, if needed. traffic, poor air quality, areas with oil change or more often as needed. (7) Replace brake fluid every five high dust levels or are sensitive to (4) Do not directly power wash the years. See Brake Fluid 0 368. environmental allergens. Filter transfer case and/or front/rear axle replacement may also be needed if output seals. High pressure water you notice reduced airflow, windows can overcome the seals and fogging up, or odors. Your local GM contaminate the transfer case fluid. Service location can help you Contaminated fluid will decrease the determine when it is the right time to life of the transfer case and/or axles replace your filter. and should be replaced. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

452 Service and Maintenance

Maintenance Schedule

Additional Required 12 000 km/7,500 mi 24 000 km/15,000 mi 36 000 km/22,500 mi 48 000 km/30,000 mi 60 000 km/37,500 mi 72 000 km/45,000 mi 84 000 km/52,500 mi 96 000 km/60,000 mi 108 000 km/67,500 mi 120 000 km/75,000 mi 132 000 km/82,500 mi 144 000 km/90,000 mi 156 000 km/97,500 mi 180 000 km/112,500 mi Services - Severe 168 000 km/105,000 mi 192 000 km/120,000 mi 204 000 km/127,500 mi 216 000 km/135,000 mi 228 000 km/142,500 mi 240 000 km/150,000 mi

Rotate tires and perform Required Services. Check engine oil level and oil life percentage. @@@@@@@@@@@@@@@@@@@@ Change engine oil and filter, if needed. Replace passenger compartment air filter. (1) @ @ @ @ @ @ Inspect evaporative control system. (2) @ @ @ Replace engine air cleaner filter. (3) @ @ @ Replace spark plugs. Inspect spark plug wires. @ Change automatic transmission fluid and filter. @ @ @ For GVW under 3 900 kg (8,600 lb), change @ @ @ transfer case fluid, if equipped with 4WD. (4) For GVW over 3 900 kg (8,600 lb), change @ @ @ @ @ @ transfer case fluid, if equipped with 4WD. (4) Drain and fill engine cooling system. (5) @ Visually inspect accessory drive belts. (6) @ Replace brake fluid. (7)

Footnotes — Maintenance vehicle is driven in areas with heavy fogging up, or odors. Your local GM Schedule Additional Required traffic, poor air quality, areas with Service location can help you Services — Severe high dust levels or are sensitive to determine when it is the right time to (1) Or every two years, whichever environmental allergens. Filter replace your filter. comes first. More frequent replacement may also be needed if replacement may be needed if the you notice reduced airflow, windows GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Service and Maintenance 453 (2) Visually check all fuel and vapor Special Application Additional lines and hoses for proper attachment, connection, routing, and Services Maintenance and Care condition. . Vehicles with Dual Wheels: Your vehicle is an important (3) Or every four years, whichever Check dual wheel nut torque at investment and caring for it properly comes first. If driving in dusty 160, 1 600, and 10 000 km (100, may help to avoid future costly conditions, inspect the filter at each 1,000, and 6,000 mi) of driving. repairs. To maintain vehicle oil change or more often as needed. Repeat this service whenever a performance, additional (4) Do not directly power wash the tire/wheel is serviced or maintenance services may be transfer case and/or front/rear axle removed. required. output seals. High pressure water . Severe Commercial Use It is recommended that your dealer can overcome the seals and Vehicles Only: Lubricate chassis perform these services — their contaminate the transfer case fluid. components every oil change. trained dealer technicians know Contaminated fluid will decrease the . Have underbody flushing service your vehicle best. Your dealer can life of the transfer case and/or axles also perform a thorough performed. See “Underbody and should be replaced. assessment with a multi-point Maintenance” in Exterior Care (5) Or every five years, whichever 0 435. inspection to recommend when your comes first. See Cooling System vehicle may need attention. 0 359. The following list is intended to (6) Or every 10 years, whichever explain the services and conditions comes first. Inspect for fraying, to look for that may indicate excessive cracking, or damage; services are required. replace, if needed. (7) Replace brake fluid every five years. See Brake Fluid 0 368. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

454 Service and Maintenance Battery Brakes Hoses The 12-volt battery supplies power Brakes stop the vehicle and are Hoses transport fluids and should to start the engine and operate any crucial to safe driving. be regularly inspected to ensure additional electrical accessories. . Signs of brake wear may include that there are no cracks or leaks. . To avoid break-down or failure to chirping, grinding, or squealing With a multi-point inspection, your start the vehicle, maintain a noises, or difficulty stopping. dealer can inspect the hoses and advise if replacement is needed. battery with full cranking power. . Trained dealer technicians have . Trained dealer technicians have access to tools and equipment Lamps the diagnostic equipment to test to inspect the brakes and Properly working headlamps, the battery and ensure that the recommend quality parts taillamps, and brake lamps are connections and cables are engineered for the vehicle. important to see and be seen on corrosion-free. Fluids the road. Belts Proper fluid levels and approved . Signs that the headlamps need attention include dimming, failure . Belts may need replacing if they fluids protect the vehicle’s systems squeak or show signs of and components. See to light, cracking, or damage. cracking or splitting. Recommended Fluids and The brake lamps need to be Lubricants 0 456 for GM approved checked periodically to ensure . Trained dealer technicians have that they light when braking. access to tools and equipment fluids. to inspect the belts and . Engine oil and windshield . With a multi-point inspection, recommend adjustment or washer fluid levels should be your dealer can check the lamps replacement when necessary. checked at every fuel fill. and note any concerns. . Instrument cluster lights may come on to indicate that fluids may be low and need to be filled. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Service and Maintenance 455 Shocks and Struts rubber; cracks or cuts in the . Your dealer has the required Shocks and struts help aid in control tread or sidewall; or a bulge or equipment to ensure proper for a smoother ride. split in the tire. wheel alignment. . Signs of wear may include . Trained dealer technicians can Windshield inspect and recommend the right steering wheel vibration, bounce/ For safety, appearance, and the sway while braking, longer tires. Your dealer can also provide tire/wheel balancing best viewing, keep the windshield stopping distance, or uneven clean and clear. tire wear. services to ensure smooth vehicle operation at all speeds. . Signs of damage include . As part of the multi-point Your dealer sells and services scratches, cracks, and chips. inspection, trained dealer name brand tires. technicians can visually inspect . Trained dealer technicians can the shocks and struts for signs Vehicle Care inspect the windshield and of leaking, blown seals, recommend proper replacement To help keep the vehicle looking like if needed. or damage, and can advise new, vehicle care products are when service is needed. available from your dealer. For Wiper Blades Tires information on how to clean and Wiper blades need to be cleaned protect the vehicle’s interior and Tires need to be properly inflated, 0 and kept in good condition to exterior, see Interior Care 441 and provide a clear view. rotated, and balanced. Maintaining Exterior Care 0 435. the tires can save money and fuel, . Signs of wear include streaking, and can reduce the risk of tire Wheel Alignment skipping across the windshield, failure. Wheel alignment is critical for and worn or split rubber. . Signs that the tires need to be ensuring that the tires deliver . Trained dealer technicians can replaced include three or more optimal wear and performance. check the wiper blades and visible treadwear indicators; cord . Signs that the alignment may replace them when needed. or fabric showing through the need to be adjusted include pulling, improper vehicle handling, or unusual tire wear. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

456 Service and Maintenance Recommended Fluids, Lubricants, and Parts Recommended Fluids and Lubricants This maintenance section applies to vehicles with a gasoline engine. If the vehicle has a diesel engine and/or an Allison Transmission, see “Recommended Fluids and Lubricants” in the Duramax diesel supplement. Fluids and lubricants identified below by name, part number, or specification can be obtained from your dealer. Usage Fluid/Lubricant Automatic Transmission (6-Speed DEXRON-VI Automatic Transmission Fluid. Transmission) Automatic Transmission (8-Speed DEXRON-HP Automatic Transmission Fluid (GM Part No. 19331925, in Transmission) Canada 19300537). Chassis Lubrication Chassis Lubricant (GM Part No. 12377985, in Canada 88901242) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB. Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL coolant. See Cooling System 0 359. Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 is recommended. See Engine Oil 0 350. Floor Shift Linkage Lubriplate Lubricant Aerosol (GM Part No. 89021668, in Canada 89021674) or lubricant meeting requirements of NLGI #2 Category LB or GC-LB. Front Axle Driveshaft Splines (All Spline Lubricant, Special Lubricant (GM Part No. 19257121, in 1500/2500/3500 Series) and Rear Canada 19257122). Axle Driveshaft Splines (All 1500 Series) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Service and Maintenance 457

Usage Fluid/Lubricant Front Axle – Four-Wheel Drive SAE 75W-90 Synthetic Axle Lubricant (GM Part No. 88900401, in Canada 89021678). Hydraulic Brake System DOT 3 Hydraulic Brake Fluid (GM Part No. 19353126, in Canada 19299819). Hydraulic Power Steering System GM Power Steering Fluid (GM Part No. 19329450, in Canada 19329451). (2500/3500 Series Only) Key Lock Cylinders, Hood Hinges, Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in Body Door Hinge Pins, Tailgate Canada 10953474). Hinge and Linkage, Fuel Door Hinge, Tailgate Handle Pivot Points, Hinges, Latch Bolt, and Linkage Rear Axle (1500 Series) SAE 75W-85 Synthetic Axle Lubricant (GM Part No. 19300457, in Canada 19300458). Rear Axle (2500/3500 Series) SAE 75W-90 Synthetic Axle Lubricant (GM Part No. 88900401, in Canada 89021678). Transfer Case (Four-Wheel Drive) DEXRON-VI Automatic Transmission Fluid. Weatherstrip Conditioning Weatherstrip Lubricant (GM Part No. 3634770, in Canada 10953518) or Dielectric Silicone Grease (GM Part No. 12345579, in Canada 10953481). Weatherstrip Squeaks Synthetic Grease with Teflon, Superlube (GM Part No. 12371287, in Canada 10953437). Windshield Washer Automotive windshield washer fluid that meets regional freeze protection requirements. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

458 Service and Maintenance Maintenance Replacement Parts Replacement parts identified below by name, part number, or specification can be obtained from your dealer. If your vehicle has a diesel engine, see the Duramax diesel supplement for more information. Part GM Part Number ACDelco Part Number Engine Air Cleaner/Filter 22845992 A3181C Oil Filter 4.3L V6 19330000 PF63E 5.3L V8; 6.2L V8 19330000 PF63E 6.0L V8 19303975 PF48E Passenger Compartment Air Filter 23281440 CF188 Spark Plugs 4.3L V6 12622441 41–114 5.3L V8; 6.2L V8 12622441 41–114 6.0L V8 12621258 41–110 Wiper Blades Driver Side – 55 cm (21.7 in) 23417074 - Passenger Side – 55 cm (21.7 in) 23417074 - GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Service and Maintenance 459 Maintenance Records After the scheduled services are performed, record the date, odometer reading, who performed the service, and the type of services performed in the boxes provided. Retain all maintenance receipts. Odometer Date Serviced By Services Performed Reading GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

460 Technical Data Vehicle Identification parts. See “Engine Specifications” Technical Data under Capacities and Specifications 0 Vehicle Identification 461 for the vehicle's engine code. Vehicle Identification Number (VIN) Vehicle Identification Service Parts Number (VIN) ...... 460 Identification Label Service Parts Identification There may be a label on the inside Label ...... 460 of the glove box that contains the Vehicle Data following information: Capacities and . Vehicle Identification Specifications ...... 461 Number (VIN) Engine Drive Belt Routing . . . . 464 This legal identifier is in the front . Model designation corner of the instrument panel, on the driver side of the vehicle. It can . Paint information be seen through the windshield from . Production options and special outside. The Vehicle Identification equipment Number (VIN) also appears on the If there is no label, there is a Vehicle Certification and Service barcode on the certification label on Parts labels and certificates of title the center (B) pillar to scan for this and registration. same information. Engine Identification The eighth character in the VIN is the engine code. This code identifies the vehicle's engine, specifications, and replacement GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Technical Data 461 Vehicle Data Capacities and Specifications The following approximate capacities are given in metric and English conversions. See Recommended Fluids and Lubricants 0 456. If the vehicle has a diesel engine, see the Duramax diesel supplement. Capacities Application Metric English Air Conditioning Refrigerant For the air conditioning system refrigerant type and charge amount, see the refrigerant label under the hood. See your dealer for more information. Cooling System 4.3L V6 1500 Series 15.1 L 15.9 qt 5.3L V8 1500 Series (L83) 16.0 L 16.9 qt 6.0L V8 2500 Series and 3500 Series 16.1 L 17.0 qt 6.2L V8 1500 Series 15.7 L 16.6 qt Engine Oil with Filter 4.3L V6 5.7 L 6.0 qt 5.3L V8; 6.2L V8 7.6 L 8.0 qt 6.0L V8 5.7 L 6.0 qt GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

462 Technical Data

Capacities Application Metric English Fuel Tank 1500 Series Standard and Short Box 98.4 L 26.0 gal 1500 Series Long Box 128.7 L 34.0 gal 2500 Series and 3500 Series Standard Box 136.3 L 36.0 gal 2500 Series and 3500 Series Long Box 136.3 L 36.0 gal 3500 Series Chassis Cab 240.4 L 63.5 gal 3500 Chassis Cab – Front Tank 89.0 L 23.5 gal 3500 Chassis Cab – Rear Tank (if equipped) 151.4 L 40.0 gal Transfer Case Fluid 1.5 L 1.6 qt Wheel Nut Torque 190 Y 140 lb ft All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this manual. Recheck fluid level after filling. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Technical Data 463 Engine Specifications Engine VIN Code Spark Plug Gap 4.3L V6 (LV3) H 0.95–1.10 mm (0.037– 0.043 in) 4.3L V6 (LV1) P 0.95–1.10 mm (0.037– 0.043 in) 5.3L V8 (L83) C 0.95–1.10 mm (0.037– 0.043 in) 6.0L V8 (L96) G 0.95–1.10 mm (0.037– 0.043 in) 6.2L V8 (L86) J 0.95–1.10 mm (0.037– 0.043 in) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

464 Technical Data Engine Drive Belt Routing

6.0L V8 Engine 6.2L V8 Engines V6 Engines If the vehicle has a diesel engine, see the Duramax diesel supplement.

5.3L V8 Engines GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Customer Information 465 Reporting Safety Defects Customer Information Customer Reporting Safety Defects to Information the United States Government ...... 476 Customer Satisfaction Reporting Safety Defects to Procedure Customer Information the Canadian Your satisfaction and goodwill are Customer Satisfaction Government ...... 476 important to your dealer and to Procedure ...... 465 Reporting Safety Defects to GMC. Normally, any concerns with General Motors ...... 477 Customer Assistance the sales transaction or the Offices ...... 467 Vehicle Data Recording and operation of the vehicle will be Customer Assistance for Text resolved by your dealer's sales or Telephone (TTY) Users . . . . . 468 Privacy Vehicle Data Recording and service departments. Sometimes, Online Owner Center ...... 468 however, despite the best intentions GM Mobility Reimbursement Privacy ...... 477 Event Data Recorders ...... 477 of all concerned, misunderstandings Program ...... 469 can occur. If your concern has not Roadside Assistance OnStar ...... 478 Infotainment System ...... 478 been resolved to your satisfaction, Program ...... 469 the following steps should be taken: Scheduling Service Appointments ...... 471 STEP ONE : Discuss your concern Courtesy Transportation with a member of dealership Program ...... 471 management. Normally, concerns Collision Damage Repair . . . . . 472 can be quickly resolved at that level. Service Publications Ordering If the matter has already been Information ...... 474 reviewed with the sales, service, Radio Frequency or parts manager, contact the owner Statement ...... 475 of your dealership or the general manager. STEP TWO : If after contacting a member of dealership management, it appears your concern cannot be GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

466 Customer Information resolved by your dealership without STEP THREE — U.S. Owners : You may contact the BBB Auto Line further help, in the U.S., call Both General Motors and your Program using the toll-free 1-800-462-8782. In Canada, call dealer are committed to making telephone number or write them at General Motors of Canada sure you are completely satisfied the following address: Customer Care Centre at with your new vehicle. However, BBB Auto Line Program 1-800-263-3777 (English), if you continue to remain unsatisfied Council of Better Business Bureaus, or 1-800-263-7854 (French). after following the procedure Inc. We encourage you to call the outlined in Steps One and Two, you 3033 Wilson Blvd. toll-free number in order to give your can file with the Better Business Suite 600 inquiry prompt attention. Have the Bureau (BBB) Auto Line Program to Arlington, VA 22201 enforce your rights. following information available to Telephone: 1-800-955-5100 give the Customer Assistance The BBB Auto Line Program is an http://www.bbb.org/council/ representative: out-of-court program administered programs-services/ . Vehicle Identification by the Council of Better Business dispute-handling-and-resolution/ Number (VIN). This is available Bureaus to settle automotive bbb-auto-line disputes regarding vehicle repairs or from the vehicle registration or This program is available in all title, or the plate at the top left of the interpretation of the New Vehicle Limited Warranty. Although you may 50 states and the District of the instrument panel and visible Columbia. Eligibility is limited by through the windshield. be required to resort to this informal dispute resolution program prior to vehicle age, mileage, and other . Dealership name and location. filing a court action, use of the factors. General Motors reserves . Vehicle delivery date and program is free of charge and your the right to change eligibility present mileage. case will generally be heard within limitations and/or discontinue its 40 days. If you do not agree with the participation in this program. When contacting GMC, remember decision given in your case, you that your concern will likely be may reject it and proceed with any resolved at a dealer's facility. That is other venue for relief available why we suggest following Step One to you. first. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Customer Information 467 STEP THREE — Canadian For further information concerning United States and Puerto Rico Owners : In the event that you do eligibility in the Canadian Motor GMC Customer Assistance Center not feel your concerns have been Vehicle Arbitration Plan (CAMVAP), P.O. Box 33172 addressed after following the call toll-free 1-800-207-0685, or call Detroit, MI 48232-5172 procedure outlined in Steps One the General Motors Customer Care and Two, General Motors of Canada Centre, 1-800-263-3777 (English), www.GMC.com Company wants you to be aware of 1-800-263-7854 (French), 1-800-GMC-8782 (1-800-462-8782) its participation in a no-charge or write to: 1-888-889-2438 (For Text Mediation/Arbitration Program. Mediation/Arbitration Program Telephone devices (TTYs)) General Motors of Canada c/o Customer Care Centre Roadside Assistance: Company has committed to binding General Motors of Canada 1-888-881-3302 arbitration of owner disputes Company From U.S. Virgin Islands: involving factory-related vehicle Mail Code: CA1-163-005 service claims. The program 1908 Colonel Sam Drive 1-800-496-9994 provides for the review of the facts Oshawa, Ontario L1H 8P7 involved by an impartial third party Canada Your inquiry should be accompanied arbiter, and may include an informal General Motors of Canada by the Vehicle Identification hearing before the arbiter. The Company Number (VIN). program is designed so that the Customer Care Centre, entire dispute settlement process, Mail Code: CA1-163-005 from the time you file your complaint Customer Assistance 1908 Colonel Sam Drive to the final decision, should be Offices Oshawa, Ontario L1H 8P7 completed in about 70 days. We www.gmc.ca believe our impartial program offers GMC encourages customers to call advantages over courts in most the toll-free number for assistance. 1-800-263-3777 (English) jurisdictions because it is informal, However, if a customer wishes to 1-800-263-7854 (French) quick, and free of charge. write or e-mail GMC, the letter 1-800-263-3830 (For Text should be addressed to: Telephone Devices (TTYs)) Roadside Assistance: 1-800-268-6800 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

468 Customer Information Overseas Membership Benefits See my.gmc.com to register your vehicle. Please contact the local General E : Download owner’s manuals Motors Business Unit. and view vehicle-specific how-to GMC Centre (Canada) gmc.ca videos. Take a trip to the GMC Centre: Customer Assistance for G : View maintenance schedules, Text Telephone (TTY) alerts, and OnStar onboard vehicle . Chat live with online help representatives. Users diagnostic information. Schedule service appointments. . Use the Vehicle Tools section. To assist customers who are deaf, I : View and print dealer-recorded hard of hearing, or speech-impaired . Access third party enthusiast service records and self-recorded and who use Text Telephones sites and social media networks. service records. (TTYs), GMC has TTY equipment . Locate resources such as available at its Customer Assistance D : Select a dealer and view lease-end, financing, and Center. Any TTY user in the U.S. locations, maps, phone numbers, warranty information. and hours. can communicate with GMC by . Retrieve your favorite articles, dialing: 1-888-889-2438. TTY users r : Track your vehicle’s warranty quizzes, tips, and multimedia in Canada can dial 1-800-263-3830. information. galleries organized into the Features and Auto Care Online Owner Center J : View active recalls by Vehicle Identification Number (VIN). See Sections. Online Owner Experience Vehicle Identification Number (VIN) . Download the owner’s manual (U.S.) my.gmc.com 0 460. for your vehicle, quickly and easily. The GMC online owner experience H : View GM Card, SiriusXM is a one-stop resource that allows Satellite radio (if equipped), and . Find the GMC-recommended interaction with GMC and keeps OnStar account information (if maintenance services for your important vehicle-specific equipped). vehicle. information in one place. F : Chat live with online help representatives. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Customer Information 469 GM Mobility Roadside Assistance Coverage Reimbursement Program Program Services are provided for the duration of the vehicle's powertrain For U.S.-purchased vehicles, call warranty. 1-888-881-3302; (Text Telephone (TTY): 1-888-889-2438). In the U.S., anyone driving the vehicle is covered. In Canada, a For Canadian-purchased vehicles, person driving the vehicle without call 1-800-268-6800. permission from the owner is not Service is available 24 hours a day, covered. 365 days a year. This program is available to Roadside Assistance is not a part of qualified applicants for cost Calling for Assistance the New Vehicle Limited Warranty. reimbursement, up to certain limits, General Motors North America and of eligible aftermarket adaptive When calling Roadside Assistance, GMC reserve the right to make any equipment required for the vehicle, have the following information changes or discontinue the such as hand controls or a ready: Roadside Assistance program at wheelchair/scooter lift for the . Your name, home address, and any time without notification. vehicle. home telephone number General Motors North America and To learn about the GM Mobility . Telephone number of your GMC reserve the right to limit program, see www.gmmobility.com location services or payment to an owner or or call the GM Mobility Assistance driver if they decide the claims are . Location of the vehicle Center at 1-800-323-9935. Text made too often, or the same type of Telephone (TTY) users, call . Model, year, color, and license claim is made many times. 1-800-833-9935. plate number of the vehicle Services Provided General Motors of Canada also has . Odometer reading, Vehicle a Mobility program. See www.gm.ca Identification Number (VIN), and . Emergency Fuel Delivery: or call 1-800-GM-DRIVE delivery date of the vehicle Delivery of enough fuel for the (800-463-7483) for details. TTY vehicle to get to the nearest . Description of the problem users call 1-800-263-3830. service station. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

470 Customer Information . Lock-Out Service: Service to . Trip Interruption Benefits and Services Specific to unlock the vehicle if you are Assistance: If your trip is Canadian-Purchased Vehicles locked out. A remote unlock may interrupted due to a warranty be available if you have OnStar. event, incidental expenses may . Fuel Delivery: Reimbursement For security reasons, the driver be reimbursed within the is up to 7 L. Diesel fuel delivery must present identification Powertrain warranty period. may be restricted. Propane and before this service is given. Items considered are reasonable other fuels are not provided through this service. . Emergency Tow from a Public and customary hotel, meals, Road or Highway: Tow to the rental car, or a vehicle being . Lock-Out Service: Vehicle nearest GMC dealer for warranty delivered back to the customer, registration is required. up to 500 miles. service, or if the vehicle was in a . Trip Interruption Benefits and crash and cannot be driven. Services Not Included in Assistance: Must be over Assistance is not given when the Roadside Assistance 150 km from where your trip vehicle is stuck in the sand, was started to qualify. mud, or snow. . Impound towing caused by Pre-authorization, original violation of any laws . Flat Tire Change: Service to detailed receipts, and a copy of change a flat tire with the spare . Legal fines the repair orders are required. Once authorization has been tire. The spare tire, if equipped, . Mounting, dismounting, must be in good condition and received, the Roadside or changing of snow tires, Assistance advisor will help to properly inflated. It is the owner's chains, or other traction devices responsibility for the repair or make arrangements and explain replacement of the tire if it is not Service is not provided if a vehicle how to receive payment. covered by the warranty. is in an area that is not accessible . Alternative Service: If to the service vehicle or is not a assistance cannot be provided . Battery Jump Start: Service to regularly traveled or maintained jump start a dead battery. right away, the Roadside public road, which includes ice and Assistance advisor may give winter roads. Off-road use is not permission to get local covered. emergency road service. You will receive payment, up to $100, GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Customer Information 471 after sending the original receipt If your dealer requests you to bring furnished with each new vehicle to Roadside Assistance. the vehicle for service, you are provides detailed warranty coverage Mechanical failures may be urged to do so as early in the work information. covered, however any cost for day as possible to allow for parts and labor for repairs not same-day repair. Transportation Options covered by the warranty are the Warranty service can generally be owner responsibility. Courtesy Transportation completed while you wait. However, Program if you are unable to do so, your Scheduling Service dealer may offer the following To enhance your ownership transportation options: Appointments experience, we and our participating When the vehicle requires warranty dealers are proud to offer Courtesy Shuttle Service service, contact your dealer and Transportation, a customer support This includes one-way or round-trip request an appointment. By program for vehicles with the shuttle service within reasonable scheduling a service appointment Bumper-to-Bumper (Base Warranty time and distance parameters of and advising the service consultant Coverage period in Canada), your dealer's area. of your transportation needs, your extended powertrain, and/or dealer can help minimize your hybrid-specific warranties in both Public Transportation or Fuel inconvenience. the U.S. and Canada. Reimbursement If the vehicle cannot be scheduled Several Courtesy Transportation If overnight warranty repairs are into the service department options are available to assist in needed, and public transportation is immediately, keep driving it until it reducing inconvenience when used, the expense must be can be scheduled for service, warranty repairs are required. supported by original receipts and within the maximum amount allowed unless, of course, the problem is Courtesy Transportation is not a safety related. If it is, please call by GM for shuttle service. If U.S. part of the New Vehicle Limited customers arrange their own your dealership, let them know this, Warranty. A separate booklet and ask for instructions. transportation, limited entitled “Limited Warranty and reimbursement for reasonable fuel Owner Assistance Information” expenses may be available. Claim amounts should reflect actual costs GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

472 Customer Information and be supported by original Additional Program Collision Parts receipts. See your dealer for Information Genuine GM Collision parts are new information. All program options, such as shuttle parts made with the same materials Courtesy Rental Vehicle service, may not be available at and construction methods as the parts with which the vehicle was For an overnight warranty repair, the every dealer. Contact your dealer originally built. Genuine GM dealer may provide an available for specific availability. Collision parts are the best choice to courtesy rental vehicle or provide for General Motors reserves the right to ensure that the vehicle's designed reimbursement of a rental vehicle. unilaterally modify, change, appearance, durability, and safety Reimbursement is limited and must or discontinue Courtesy are preserved. The use of Genuine be supported by original receipts as Transportation at any time and to GM parts can help maintain the GM well as a signed and completed resolve all questions of claim New Vehicle Limited Warranty. rental agreement and meet state/ eligibility pursuant to the terms and provincial, local, and rental vehicle conditions described herein at its Recycled original equipment parts provider requirements. sole discretion. may also be used for repair. These Requirements vary and may include parts are typically removed from minimum age requirements, Collision Damage Repair vehicles that were total losses in insurance coverage, credit card, etc. prior crashes. In most cases, the Additional fees such as fuel usage If the vehicle is involved in a parts being recycled are from charges, taxes, levies, usage fees, collision and it is damaged, have the undamaged sections of the vehicle. excessive mileage, or rental usage damage repaired by a qualified A recycled original equipment GM beyond the completion of the repair technician using the proper part may be an acceptable choice to are also your responsibility. equipment and quality replacement maintain the vehicle's originally parts. Poorly performed collision designed appearance and safety It may not be possible to provide a repairs diminish the vehicle resale performance; however, the history of like vehicle as a courtesy rental. value, and safety performance can these parts is not known. Such parts be compromised in subsequent are not covered by the GM New collisions. Vehicle Limited Warranty, and any related failures are not covered by that warranty. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Customer Information 473 Aftermarket collision parts are also Insuring the Vehicle parts. Read the lease carefully, as available. These are made by you may be charged at the end of Protect your investment in the GM companies other than GM and may the lease for poor quality repairs. vehicle with comprehensive and not have been tested for the vehicle. collision insurance coverage. There As a result, these parts may fit If a Crash Occurs are significant differences in the poorly, exhibit premature durability/ quality of coverage afforded by If there has been an injury, call corrosion problems, and may not various insurance policy terms. emergency services for help. Do not perform properly in subsequent Many insurance policies provide leave the scene of a crash until all collisions. Aftermarket parts are not reduced protection to the GM matters have been taken care of. covered by the GM New Vehicle vehicle by limiting compensation for Move the vehicle only if its position Limited Warranty, and any vehicle damage repairs through the use of puts you in danger, or you are failure related to such parts is not aftermarket collision parts. Some instructed to move it by a police covered by that warranty. insurance companies will not officer. Repair Facility specify aftermarket collision parts. Give only the necessary information When purchasing insurance, we to police and other parties involved GM also recommends that you recommend that you ensure that the in the crash. choose a collision repair facility that vehicle will be repaired with GM For emergency towing see meets your needs before you ever original equipment collision parts. need collision repairs. Your dealer Roadside Assistance Program If such insurance coverage is not 0 469. may have a collision repair center available from your current with GM-trained technicians and insurance carrier, consider switching Gather the following information: state-of-the-art equipment, or be to another insurance carrier. able to recommend a collision repair . Driver name, address, and center that has GM-trained If the vehicle is leased, the leasing telephone number technicians and comparable company may require you to have . Driver license number equipment. insurance that ensures repairs with Genuine GM Original Equipment . Owner name, address, and Manufacturer (OEM) parts or telephone number Genuine Manufacturer replacement . Vehicle license plate number GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

474 Customer Information . Vehicle make, model, and original GM parts. Remember, Service Publications model year recycled parts will not be covered by Ordering Information . Vehicle Identification the GM vehicle warranty. Number (VIN) Insurance pays the bill for the repair, Service Manuals . Insurance company and policy but you must live with the repair. Service Manuals have the diagnosis number Depending on your policy limits, and repair information on the your insurance company may engines, transmission, axle, . General description of the initially value the repair using suspension, brakes, electrical, damage to the other vehicle aftermarket parts. Discuss this with steering, body, etc. Choose a reputable repair facility the repair professional, and insist on that uses quality replacement parts. Genuine GM parts. Remember, Owner Information See “Collision Parts” earlier in this if the vehicle is leased, you may be Owner publications are written section. obligated to have the vehicle specifically for owners and intended repaired with Genuine GM parts, If the airbag has inflated, see What to provide basic operational even if your insurance coverage information about the vehicle. The Will You See after an Airbag does not pay the full cost. Inflates? 0 82. Owner’s Manual includes the If another party's insurance Maintenance Schedule for all Managing the Vehicle Damage company is paying for the repairs, models. Repair Process you are not obligated to accept a In-Portfolio: Includes a Portfolio, repair valuation based on that In the event that the vehicle requires Owner’s Manual, and Warranty insurance company's collision policy damage repairs, GM recommends Manual. repair limits, as you have no that you take an active role in its contractual limits with that company. RETAIL SELL PRICE: $35.00 – repair. If you have a pre-determined In such cases, you can have control $40.00 (U.S.) plus handling and repair facility of choice, take the of the repair and parts choices as shipping fees. vehicle there, or have it towed there. long as the cost stays within Specify to the facility that any reasonable limits. required replacement collision parts be original equipment parts, either new Genuine GM parts or recycled GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Customer Information 475 Without Pouch: Owner’s Prices are subject to change without Operation is subject to the following Manual only. notice and without incurring two conditions: RETAIL SELL PRICE: obligation. Allow ample time for 1. The device may not cause $25.00 (U.S.) plus handling and delivery. harmful interference. shipping fees. All listed prices are quoted in U.S. 2. The device must accept any funds. Make checks payable in U.S. Current and Past Models interference received, including funds. interference that may cause Service and Owner publications are undesired operation of the available for many current and past Radio Frequency device. model year GM vehicles. Statement Changes or modifications to any of ORDER TOLL FREE: This vehicle has systems that these systems by other than an 1-800-551-4123 Monday – Friday operate on a radio frequency that authorized service facility could void 8:00 AM – 6:00 PM Eastern Time complies with Part 15/Part 18 of authorization to use this equipment. For Credit Card Orders Only the Federal Communications (VISA-MasterCard-Discover), see Commission (FCC) rules and with Helm, Inc. at: www.helminc.com. Innovation, Science and Economic Or write to: Development (ISED) Canada's RSP-100 / license-exempt Helm, Incorporated RSS's / ICES-001. Attention: Customer Service 47911 Halyard Drive Plymouth, MI 48170 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

476 Customer Information Reporting Safety However, NHTSA cannot Reporting Safety Defects become involved in individual to the Canadian Defects problems between you, your dealer, or General Motors. Government Reporting Safety Defects To contact NHTSA, you may call If you live in Canada, and you to the United States the Vehicle Safety Hotline believe that the vehicle has a Government toll-free at 1-888-327-4236 safety defect, notify Transport (TTY: 1-800-424-9153); go to Canada immediately, and notify If you believe that your vehicle General Motors of Canada has a defect which could cause http://www.safercar.gov; or write to: Company. Call Transport a crash or could cause injury or Canada at 1-800-333-0510; death, you should immediately Administrator, NHTSA go to: inform the National Highway 1200 New Jersey Avenue, S.E. Traffic Safety Administration Washington, D.C. 20590 www.tc.gc.ca/recalls (English) (NHTSA) in addition to notifying www.tc.gc.ca/rappels (French) You can also obtain other General Motors. information about motor or write to: If NHTSA receives similar vehicle safety from Transport Canada complaints, it may open an http://www.safercar.gov. Motor Vehicle Safety Directorate investigation, and if it finds Defect Investigations and that a safety defect exists in a Recalls Division group of vehicles, it may order a 80 Noel Street recall and remedy campaign. Gatineau, QC J8Z 0A1 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Customer Information 477 Reporting Safety Defects Vehicle Data Event Data Recorders to General Motors Recording and This vehicle is equipped with an In addition to notifying NHTSA (or Privacy event data recorder (EDR). The Transport Canada) in a situation like main purpose of an EDR is to this, notify General Motors. The vehicle has a number of record, in certain crash or near computers that record information crash-like situations, such as an air Call 1-800-GMC-8782 about the vehicle s performance and bag deployment or hitting a road (1-800-462-8782), or write: ’ how it is driven. For example, the obstacle, data that will assist in GMC Customer Assistance Center vehicle uses computer modules to understanding how a vehicle’s P.O. Box 33172 monitor and control engine and systems performed. The EDR is Detroit, MI 48232-5172 transmission performance, to designed to record data related to vehicle dynamics and safety In Canada, call 1-800-263-3777 monitor the conditions for airbag deployment and deploy them in a systems for a short period of time, (English) or 1-800-263-7854 typically 30 seconds or less. The (French), or write: crash, and, if equipped, to provide antilock braking to help the driver EDR in this vehicle is designed to General Motors of Canada control the vehicle. These modules record such data as: Company may store data to help the dealer . How various systems in your Customer Care Centre, technician service the vehicle. vehicle were operating; Mail Code: CA1-163-005 Some modules may also store data 1908 Colonel Sam Drive about how the vehicle is operated, . Whether or not the driver and Oshawa, Ontario L1H 8P7 such as rate of fuel consumption or passenger safety belts were buckled/fastened; In Mexico, call 01-800-466-0801. average speed. These modules may retain personal preferences, such as . How far (if at all) the driver was In other Central America and radio presets, seat positions, and depressing the accelerator and/ Caribbean Countries, call temperature settings. or brake pedal; and, 52-722-236-0680. . How fast the vehicle was traveling. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

478 Customer Information These data can help provide a GM will not access these data or OnStar Terms and Conditions and better understanding of the share it with others except: with the Privacy Statement on the OnStar circumstances in which crashes and consent of the vehicle owner or, website. injuries occur. if the vehicle is leased, with the See OnStar Additional Information Note consent of the lessee; in response 0 485. to an official request by police or EDR data are recorded by your similar government office; as part of vehicle only if a non-trivial crash GM's defense of litigation through Infotainment System situation occurs; no data are the discovery process; or, as If the vehicle is equipped with a recorded by the EDR under normal required by law. Data that GM navigation system as part of the driving conditions and no personal collects or receives may also be infotainment system, use of the data (e.g., name, gender, age, and used for GM research needs or may system may result in the storage of crash location) are recorded. be made available to others for destinations, addresses, telephone However, other parties, such as law research purposes, where a need is numbers, and other trip information. enforcement, could combine the shown and the data is not tied to a See the infotainment manual for EDR data with the type of specific vehicle or vehicle owner. information on stored data and for personally identifying data routinely deletion instructions. acquired during a crash investigation. OnStar To read data recorded by an EDR, If the vehicle is equipped with special equipment is required, and OnStar and has an active service access to the vehicle or the EDR is plan, additional data may be needed. In addition to the vehicle collected through the OnStar manufacturer, other parties, such as system. This includes information law enforcement, that have the about the vehicle’s operation; special equipment, can read the collisions involving the vehicle; the information if they have access to use of the vehicle and its features; the vehicle or the EDR. and, in certain situations, the location and approximate GPS speed of the vehicle. Refer to the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

OnStar 479 OnStar Overview vehicle, including location OnStar information. See OnStar User Terms, Privacy Statement, and OnStar Overview Software Terms for more details including system limitations at OnStar Overview ...... 479 www.onstar.com (U.S.) or OnStar Services www.onstar.ca (Canada). Emergency ...... 480 The OnStar system status light is Security ...... 481 next to the OnStar buttons. If the Navigation ...... 481 = Voice Command Button status light is: Connections ...... 482 Q Blue OnStar Button Diagnostics ...... 484 . Solid Green: System is ready. > Red Emergency Button OnStar Additional Information . Flashing Green: On a call. OnStar Additional This vehicle may be equipped with a . Red: Indicates a problem. Information ...... 485 comprehensive, in-vehicle system that can connect to an OnStar . Off: System is active. Press Q Advisor for Emergency, Security, twice to speak with an OnStar Navigation, Connections, and Advisor. Diagnostics Services. OnStar services may require a paid service Press Q or call 1-888-4ONSTAR plan and data plan. OnStar requires (1-888-466-7827) to speak to an the vehicle battery and electrical Advisor. system, cellular service, and GPS Functionality of the Voice Command satellite signals to be available and button may vary by vehicle and operating. OnStar acts as a link to region. existing emergency service providers. OnStar may collect information about you and your GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

480 OnStar Press = to: . Get driving directions. OnStar Services . Open the OnStar app on the . Receive a Diagnostic check of infotainment display. See the the vehicle's key operating Emergency systems. infotainment manual for Emergency Services require an information on how to use the . Receive Roadside Assistance. active, OnStar service plan OnStar app. . Manage Wi-Fi Settings, (excludes Basic Plan). With Or if equipped. Automatic Crash Response, built-in sensors can automatically alert a . Make a call, end a call, Press > to get a priority connection or answer an incoming call. specially trained OnStar Advisor to an OnStar Advisor available who is immediately connected in to . Give OnStar Hands-Free Calling 24/7 to: the vehicle to help. voice commands. . Get help for an emergency. Press > for a priority connection to . Give OnStar Turn-by-Turn . Be a Good Samaritan or an OnStar Advisor who can contact Navigation voice commands. respond to an AMBER Alert. emergency service providers, direct . Obtain and customize the Wi-Fi . Get assistance in severe them to your exact location, and hotspot name or SSID and weather or other crisis situations relay important information. password, if equipped. and find evacuation routes. With OnStar Crisis Assist, specially Press Q to connect to an trained Advisors are available Advisor to: 24 hours a day, 7 days a week, to provide a central point of contact, . Verify account information or assistance, and information during a update contact information. crisis. With Roadside Assistance, Advisors can locate a nearby service provider to help with a flat tire, a battery jump, or an empty gas tank. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

OnStar 481 Security Press Q to receive Turn-by-Turn 2. Say “Cancel route.” System directions or have them sent to the responds: “Do you want to If equipped, OnStar provides these cancel directions?” services: vehicle’s navigation screen, if equipped. 3. Say “Yes.” System responds: . With Stolen Vehicle Assistance, Turn-by-Turn Navigation “OK, request completed, thank OnStar Advisors can use GPS to you, goodbye.” pinpoint the vehicle and help 1. Press Q to connect to an authorities quickly recover it. Route Preview Advisor. . With Remote Ignition Block, 1. Press =. System responds: 2. Request directions to be if equipped, OnStar can block downloaded to the vehicle. “OnStar ready,” then a tone. the engine from being restarted. 3. Follow the voice-guided 2. Say “Route preview.” System . With Stolen Vehicle Slowdown, commands. responds with the next three if equipped, OnStar can work maneuvers. with law enforcement to Using Voice Commands Repeat gradually slow the vehicle down. During a Planned Route = Theft Alarm Notification Functionality of the Voice Command 1. Press . System responds: “OnStar ready,” then a tone. If equipped, if the doors are locked button may vary by vehicle and and the vehicle alarm sounds, a region. For some vehicles, press = 2. Say “Repeat.” System notification by text, e-mail, or phone to open the OnStar app on the responds with the last direction call will be sent. If the vehicle is infotainment display. For other given, then responds with stolen, an OnStar Advisor can work vehicles press = as follows. “OnStar ready,” then a tone. with authorities to recover the Get My Destination vehicle. Cancel Route 1. Press =. System responds: 1. Press =. System responds: “OnStar ready,” then a tone. Navigation “OnStar ready,” then a tone. OnStar navigation requires a specific OnStar service plan. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

482 OnStar 2. Say “Get my destination.” Ensuring Security 1. To retrieve Wi-Fi hotspot System responds with the . Change the default passwords information, press = to open address and distance to the for the Wi-Fi hotspot and the OnStar app on the destination, then responds with myGMC mobile application. infotainment display, then “OnStar ready,” then a tone. Make these passwords different select Wi-Fi Hotspot. On some Send Destination to Vehicle from each other and use a vehicles, touch Wi-Fi or Wi-Fi combination of letters, numbers, Settings on the screen. Directions can be sent to the and symbols to increase the 2. The Wi-Fi settings will display vehicle’s navigation screen, security. if equipped. the Wi-Fi hotspot name (SSID), . Change the default name of the password, and on some Press Q, then ask the Advisor to SSID (Service Set Identifier). vehicles, the connection type download directions to the vehicle’s This is your network’s name that (no Internet connection, 3G, navigation system, if equipped. After is visible to other wireless 4G, 4G LTE), and signal quality the call ends, the navigation screen devices. Choose a unique name (poor, good, excellent). will provide prompts to begin driving and avoid family names or 3. To change the SSID or directions. Routes that are sent to vehicle descriptions. the navigation screen can only be password, press Q or call canceled through the navigation OnStar Wi-Fi Hotspot (If Equipped) 1-888-4ONSTAR to connect system. The vehicle may have a built-in with an Advisor. On some Wi-Fi hotspot that provides access vehicles, the SSID and See www.onstar.com (U.S.) or password can be changed in www.onstar.ca (Canada). to the Internet and web content at 4G LTE speed. Up to seven mobile the Wi-Fi Hotspot menu. Connections devices can be connected. A data After initial set-up, your vehicle’s plan is required. Use the in-vehicle Wi-Fi hotspot will connect The following OnStar services help controls only when it is safe to automatically to your mobile with staying connected. do so. devices. Manage data usage by For coverage maps, see turning Wi-Fi on or off on your www.onstar.com (U.S.) or mobile device, using the myGMC www.onstar.ca (Canada). mobile app, or by contacting an GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

OnStar 483 OnStar Advisor. On some vehicles, . Locate a dealer and schedule OnStar AtYourService Wi-Fi can also be managed from the service. OnStar Advisors can provide offers Wi-Fi Hotspot menu. . Request roadside assistance. from restaurants and retailers on MyGMC Mobile App (If Available) . Set a parking reminder with pin your route, help locate hotels, or book a room. These services Download the myGMC mobile app drop, take a photo, make a note, vary by market. to compatible Apple and Android and set a timer. smartphones. GMC users can . Connect with GMC on social OnStar Hands-Free Calling access the following services from a media. smartphone: Make and receive calls with the For myGMC mobile app information built-in wireless calling service, . Remotely start/stop the vehicle, and compatibility, see which requires available minutes. if factory-equipped. www.my.gmc.com. Functionality of the Voice Command button may vary by vehicle and . Lock/unlock doors, if equipped An active OnStar service, with automatic locks. compatible device, factory-installed region. For some vehicles, press = . Activate the horn and lamps. remote start, and power locks are to open the OnStar app on the required. Data rates apply. See infotainment display, then select . Check the vehicle’s fuel level, oil onstar.com for details and system Hands-Free calling. For other life, or tire pressure, limitations. vehicles press = as follows. if factory-equipped with the Tire Pressure Monitor System. Remote Services Make a Call . Send destinations to the vehicle. Contact an OnStar Advisor to 1. Press =. System responds: . Locate the vehicle on a map unlock the doors or sound the horn “OnStar ready.” (U.S. market only). and flash the lamps. 2. Say “Call.” System responds: . Turn the vehicle's Wi-Fi hotspot “Call. Please say the name or on/off, manage settings, and number to call.” monitor data consumption, if equipped. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

484 OnStar 3. Say the entire number without End a Call . Proactive Alerts: Receive a pausing, including a “1” and the real-time e-mail or text message area code. System responds: Press =. System responds: “Call regarding potential issues with “OK, calling.” ended.” key vehicle components, such Verify Minutes and Expiration as the battery, fuel system, Calling 911 Emergency or starter system. Alerts for 1. Press =. System responds: Press = and say “Minutes” then potential issues appear on the infotainment display. Proactive “OnStar ready.” “Verify” to check how many minutes remain and their expiration date. Alerts are designed to help 2. Say “Call.” System responds: predict specific types of issues “Call. Please say the name or Diagnostics based on information collected number to call.” from the vehicle. Other factors By monitoring and reporting on the 3. Say “911” without pausing. may affect vehicle performance. vehicle s key systems, OnStar System responds: “911.” ’ Not all issues will deliver alerts. Advanced Diagnostics provides a In some cases, a dealer service 4. Say “Call.” System responds: way to keep up on maintenance. check may be required to “OK, dialing 911.” Capabilities vary by model. See confirm the accuracy of the Retrieve My Number www.onstar.com for details and alerts. system limitations. Message and = data rates may apply. . Dealer Maintenance Notification: 1. Press . System responds: Have the vehicle notify your “OnStar ready.” Includes: preferred dealer when it is time 2. Say “My number.” System . Diagnostic Alerts: Set for maintenance. Your dealer will responds: “Your OnStar preferences to receive real-time then contact you to set up an Hands-Free Calling number is,” e-mails, texts, or monthly appointment. then says the number. reports of the vehicle’s health. To begin, press Q to speak to an Or press Q to have an Advisor Advisor, or see www.onstar.com. initiate a remote diagnostic report. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

OnStar 485 OnStar Additional . After change in ownership and Advanced Vehicle Diagnostics, at 90 days. Remote Services, Roadside Information Assistance, Turn-by-Turn Transferring Service Navigation, and Hands-Free Calling OnStar Smart Driver Press Q to request account transfer are available on most vehicles. Not OnStar Smart Driver provides eligibility information. The Advisor all OnStar services are available information about driving behavior to can cancel or change account everywhere or on all vehicles. For help maximize overall vehicle information. more information, a full description performance, reduce wear and tear, of OnStar services, system and enhance fuel efficiency. An Selling/Transferring the limitations, and OnStar User Terms, Insurance Discounts Eligibility Vehicle Privacy Statement, and Software Terms: feature is also offered within OnStar Call 1-888-4ONSTAR Smart Driver. See www.onstar.com (1-888-466-7827) immediately to . Call 1-888-4ONSTAR for details regarding vehicle terminate your OnStar services if (1-888-466-7827). eligibility and system limitations. the vehicle is disposed of, sold, . See www.onstar.com (U.S.). OnStar, General Motors, and their transferred, or if the lease ends. affiliates are not insurance . See www.onstar.ca (Canada). providers. Obtain insurance only Reactivation for Subsequent . Call TTY 1-877-248-2080. from licensed insurance providers. Owners Q In-Vehicle Audio Messages Q . Press to speak with an Press and follow the prompts to Advisor. Audio messages may play important speak to an Advisor as soon as information at the following times: possible. The Advisor will update OnStar services cannot work unless vehicle records and explain OnStar the vehicle is in a place where . Prior to vehicle purchase. service options. OnStar has an agreement with a Press Q to set up an account. wireless service provider for service How OnStar Service Works in that area. The wireless service . With the OnStar Basic Plan, provider must also have coverage, every 60 days. Automatic Crash Response, Emergency Services, Crisis Assist, network capacity, reception, and Stolen Vehicle Assistance, technology compatible with OnStar GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

486 OnStar services. Service involving location Press Q to help: change the OnStar PIN, contact an information about the vehicle cannot OnStar Advisor by pressing Q or . Locate a gas station with an work unless GPS signals are calling 1-888-4ONSTAR. available, unobstructed, and attendant to pump gas. compatible with the OnStar . Find a hotel, restaurant, etc., Warranty hardware. OnStar services may not that meets accessibility needs. OnStar equipment may be work if the OnStar equipment is not . Provide directions to the closest warranted as part of the vehicle properly installed or it has not been warranty. properly maintained. If equipment or hospital or pharmacy in urgent software is added, connected, situations. Languages or modified, OnStar services may TTY Users The vehicle can be programmed to not work. Other problems beyond respond in multiple languages. the control of OnStar — such as OnStar has the ability to hills, tall buildings, tunnels, weather, communicate to deaf, Press Q and ask for an Advisor. electrical system design and hard-of-hearing, or speech-impaired Advisors are available in English, architecture of the vehicle, damage customers while in the vehicle. The Spanish, and French. Available to the vehicle in a crash, or wireless available dealer-installed TTY languages may vary by country. system can provide in-vehicle phone network congestion or Potential Issues jamming — may prevent service. access to all OnStar services, except Virtual Advisor and OnStar OnStar cannot perform Remote See Radio Frequency Statement Turn-by-Turn Navigation. Door Unlock or Stolen Vehicle 0 475. OnStar Personal Identification Assistance after the vehicle has been off continuously for 10 days Services for People with Number (PIN) Disabilities without an ignition cycle. If the A PIN is needed to access some vehicle has not been started for Advisors provide services to help OnStar services. The PIN will need 10 days, OnStar can contact with physical disabilities and to be changed the first time when Roadside Assistance or a locksmith medical conditions. speaking with an Advisor. To to help gain access to the vehicle. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

OnStar 487 Global Positioning or near the antenna to prevent equipment may interfere with the System (GPS) blocking cellular and GPS signal operation of the OnStar system and reception. cause it to not operate. . Obstruction of the GPS can occur in a large city with tall Unable to Connect to OnStar Vehicle Software Updates buildings; in parking garages; Message OnStar or GM may remotely deliver around airports; in tunnels and software updates or changes to the underpasses; or in an area with If there is limited cellular coverage vehicle without further notice or very dense trees. If GPS signals or the cellular network has reached consent. These updates or changes are not available, the OnStar maximum capacity, this message may enhance or maintain safety, system should still operate to may come on. Press Q to try the security, or the operation of the call OnStar. However, OnStar call again or try again after driving a vehicle or the vehicle systems. could have difficulty identifying few miles into another cellular area. Software updates or changes may the exact location. Vehicle and Power Issues affect or erase data or settings that . In emergency situations, OnStar are stored in the vehicle, such as OnStar services require a vehicle can use the last stored GPS OnStar Hands-Free Calling name electrical system, wireless service, location to send to emergency tags, saved navigation destinations, and GPS satellite technologies to be responders. or pre-set radio stations. Neither available and operating for features OnStar nor GM is responsible for A temporary loss of GPS can cause to function properly. These systems any affected or erased data or loss of the ability to send a may not operate if the battery is settings. These updates or changes Turn-by-Turn Navigation route. The discharged or disconnected. Advisor may give a verbal route or may also collect personal may ask for a call back after the Add-on Electrical Equipment information. Such collection is vehicle is driven into an open area. described in the OnStar privacy The OnStar system is integrated statement or separately disclosed at Cellular and GPS Antennas into the electrical architecture of the the time of installation. These vehicle. Do not add any electrical updates or changes may also cause Cellular reception is required for equipment. See Add-On Electrical a system to automatically OnStar to send remote signals to 0 Equipment 336. Added electrical communicate with GM servers to the vehicle. Do not place items over collect information about vehicle GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

488 OnStar system status, identify whether OnStar - Software THE SOFTWARE IS PROVIDED updates or changes are available, Acknowledgements “AS IS,” WITHOUT WARRANTY OF or deliver updates or changes. An ANY KIND, EXPRESS OR active OnStar agreement constitutes Certain OnStar components include IMPLIED, INCLUDING BUT NOT consent to these software updates libcurl and unzip software and other LIMITED TO THE WARRANTIES or changes and agreement that third party software. Below are the OF MERCHANTABILITY, FITNESS either OnStar or GM may remotely notices and licenses associated FOR A PARTICULAR PURPOSE deliver them to the vehicle. with libcurl and unzip and for other AND NONINFRINGEMENT OF third party software please see THIRD PARTY RIGHTS. IN NO Privacy http://opensource.lge.com/index EVENT SHALL THE AUTHORS OR The complete OnStar Privacy www.onstar.com/us/en/ COPYRIGHT HOLDERS BE Statement may be found at LIABLE FOR ANY CLAIM, libcurl: www.onstar.com (U.S.), DAMAGES OR OTHER LIABILITY, or www.onstar.ca (Canada). We COPYRIGHT AND PERMISSION WHETHER IN AN ACTION OF recommend that you review it. NOTICE CONTRACT, TORT OR OTHERWISE, ARISING FROM, If you have any questions, call Copyright (c) 1996 - 2010, Daniel OUT OF OR IN CONNECTION 1-888-4ONSTAR (1-888-466-7827) Stenberg, . or press Q to speak with an WITH THE SOFTWARE OR THE All rights reserved. Advisor. Users of wireless USE OR OTHER DEALINGS IN communications are cautioned that Permission to use, copy, modify, THE SOFTWARE. the privacy of any information sent and distribute this software for any Except as contained in this notice, via wireless cellular communications purpose with or without fee is the name of a copyright holder shall cannot be assured. Third parties hereby granted, provided that the not be used in advertising or may unlawfully intercept or access above copyright notice and this otherwise to promote the sale, use transmissions and private permission notice appear in all or other dealings in this Software communications without consent. copies. without prior written authorization of the copyright holder. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

OnStar 489 unzip: This software is provided “as is,” self-extracting archive; that is This is version 2005-Feb-10 of the without warranty of any kind, permitted without inclusion of Info-ZIP copyright and license. express or implied. In no event shall this license, as long as the The definitive version of this Info-ZIP or its contributors be held normal SFX banner has not document should be available liable for any direct, indirect, been removed from the binary at ftp://ftp.info-zip.org/pub/infozip/ incidental, special or consequential or disabled. damages arising out of the use of or license.html indefinitely. 3. Altered versions–including, but inability to use this software. Copyright (c) 1990-2005 Info-ZIP. All not limited to, ports to new rights reserved. Permission is granted to anyone to operating systems, existing use this software for any purpose, ports with new graphical For the purposes of this copyright including commercial applications, interfaces, and dynamic, and license, “Info-ZIP” is defined as and to alter it and redistribute it shared, or static library the following set of individuals: freely, subject to the following versions–must be plainly Mark Adler, John Bush, Karl Davis, restrictions: marked as such and must not Harald Denker, Jean-Michel Dubois, 1. Redistributions of source code be misrepresented as being Jean-loup Gailly, Hunter Goatley, Ed must retain the above copyright the original source. Such Gordon, Ian Gorman, Chris notice, definition, disclaimer, altered versions also must not Herborth, Dirk Haase, Greg Hartwig, and this list of conditions. be misrepresented as being Robert Heath, Jonathan Hudson, Info-ZIP releases–including, Paul Kienitz, David Kirschbaum, 2. Redistributions in binary form but not limited to, labeling of Johnny Lee, Onno van der Linden, (compiled executables) must the altered versions with the Igor Mandrichenko, Steve P. Miller, reproduce the above copyright names “Info-ZIP” (or any Sergio Monesi, Keith Owens, notice, definition, disclaimer, variation thereof, including, but George Petrov, Greg Roelofs, Kai and this list of conditions in not limited to, different Uwe Rommel, Steve Salisbury, documentation and/or other capitalizations), “Pocket Dave Smith, Steven M. Schweda, materials provided with the UnZip,”“WiZ” or “MacZip” Christian Spieler, Cosmin Truta, distribution. The sole exception without the explicit permission Antoine Verheijen, Paul von Behren, to this condition is redistribution of Info-ZIP. Such altered Rich Wales, Mike White. of a standard UnZipSFX binary versions are further prohibited (including SFXWiz) as part of a from misrepresentative use of GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

490 OnStar the Zip-Bugs or Info-ZIP e-mail addresses or of the Info-ZIP URL(s). 4. Info-ZIP retains the right to use the names “Info-ZIP,”“Zip,” “UnZip,”“UnZipSFX,”“WiZ,” “Pocket UnZip,”“Pocket Zip,” and “MacZip” for its own source and binary releases. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Index 491 Index A Airbag System (cont'd) Accessories and What Makes an Airbag Modifications ...... 343 Inflate? ...... 82 Accessory Power ...... 260 What Will You See after an Active Fuel Management ...... 264 Airbag Inflates? ...... 82 Add-On Electrical Equipment . . . 336 When Should an Airbag Adding a Snow Plow or Inflate? ...... 80 Similar Equipment ...... 337 Where Are the Airbags? ...... 78 Additional Information Airbags OnStar ...... 485 Adding Equipment to the Additional Maintenance Vehicle ...... 90 and Care ...... 453 Light On-Off ...... 147 Adjustable Throttle and On-Off Light ...... 147 Brake Pedal ...... 256 On-Off Switch ...... 84 Adjustments Passenger Status Indicator . . . 149 Lumbar, Front Seats ...... 60 Readiness Light ...... 147 Agreements Servicing Airbag-Equipped Trademarks and License . . . . . 218 Vehicles ...... 90 Air Cleaner/Filter, Engine ...... 358 System Check ...... 77 Air Conditioning ...... 224, 226, 228 Alarm Air Filter, Passenger Vehicle Security ...... 44 Compartment ...... 232 All-Season Tires ...... 389 Air Vents ...... 231 All-Terrain Tires ...... 391 Airbag System AM-FM Radio ...... 190 Check ...... 91 Antenna How Does an Airbag Fixed Mast ...... 194 Restrain? ...... 82 Multi-band ...... 194 Passenger Sensing System . . . .86 Antilock Brake System (ABS) . . . 280 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

492 Index Antilock Brake System Automatic Transmission (cont'd) Brakes (cont'd) (ABS) (cont'd) Shift Lock Control Function Antilock ...... 280 Warning Light ...... 152 Check ...... 374 Assist ...... 281 Appearance Care Auxiliary Fluid ...... 368 Exterior ...... 435 Roof Mounted Lamp ...... 182 Parking ...... 281 Interior ...... 441 Auxiliary Jack ...... 203 Braking ...... 236 Apple CarPlay and Avoiding Untrusted Media Automatic Forward ...... 294 Android Auto ...... 217 Devices ...... 195 Break-In, New Vehicle ...... 255 Assistance Program, Axle, Front ...... 370 Bulb Replacement Roadside ...... 469 Axle, Rear ...... 371 Center High-Mounted Assistance Systems for B Stoplamp (CHMSL) and Driving ...... 292 Cargo Lamp ...... 380 Battery Assistance Systems for Halogen Bulbs ...... 378 Exterior Lighting Battery Parking and Backing ...... 289 Headlamp Aiming ...... 377 Saver ...... 185 Audio Headlamps ...... 378 Load Management ...... 184 Bluetooth ...... 204 High Intensity Discharge Power Protection ...... 185 Theft-Deterrent Feature ...... 187 (HID) Lighting ...... 378 Battery - North America . . . .369, 426 Audio Players Taillamps, Turn Signal, Blade Replacement, Wiper . . . . . 375 CD ...... 195 Stoplamps, and Back-up Blind Spot Mirrors ...... 50 Automatic Lamps ...... 378 Bluetooth Dimming Mirrors ...... 50 Buying New Tires ...... 408 Overview ...... 211, 213 Door Locks ...... 41 Bluetooth Audio ...... 204 C Forward Braking ...... 294 Brake Calibration ...... 131 Headlamp System ...... 179 Pedal and Adjustable California Transmission ...... 265 Throttle ...... 256 Fuel Requirements ...... 300 Transmission Fluid ...... 354, 357 System Warning Light ...... 152 Automatic Transmission Brakes ...... 367 Manual Mode ...... 268 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Index 493 California (cont'd) Check Control Perchlorate Materials Engine Light (Malfunction Hill Descent ...... 284 Requirements ...... 343 Indicator) ...... 150 Traction and Electronic California Ignition Transmission Lock . . . 374 Stability ...... 282 Proposition Child Restraints Control Light 65 Warning ...... 343,369, 426, Infants and Young Children . . . . .94 Hill Descent ...... 153 Back Cover Lower Anchors and Tethers Control of a Vehicle ...... 236 Canadian Vehicle Owners ...... 2 for Children ...... 99 Convex Mirrors ...... 47 Capacities and Older Children ...... 92 Coolant Specifications ...... 461 Securing ...... 111, 114, 115 Engine Temperature Gauge . . 144 Carbon Monoxide Systems ...... 96 Engine Temperature Engine Exhaust ...... 264 Circuit Breakers ...... 381 Warning Light ...... 155 Tailgate ...... 43 Cleaning Cooling ...... 224, 226, 228 Winter Driving ...... 245 Exterior Care ...... 435 Cooling System ...... 359 Cargo Interior Care ...... 441 Courtesy Transportation Tie-Downs ...... 126 Climate Control Program ...... 471 Cargo Lamp ...... 183 Systems ...... 224, 226 Cruise Control ...... 285 Caution, Danger, and Warning . . . . 3 Air Conditioning ...... 224, 226 Light ...... 158 CD Player ...... 195 Dual Automatic ...... 228 Cupholders ...... 124 Center Console Storage ...... 125 Heating ...... 224, 226 Customer Assistance ...... 468 Center High-Mounted Clock ...... 132 Offices ...... 467 Stoplamp (CHMSL) and Cluster, Instrument ...... 138 Text Telephone (TTY) Cargo Lamp ...... 380 Collision Damage Repair ...... 472 Users ...... 468 Center Seat ...... 59 Compartments Customer Information Chains, Tire ...... 413 Storage ...... 124 Service Publications Charging Compass ...... 131 Ordering Information ...... 474 Wireless ...... 134 Connections Customer Satisfaction Charging System Light ...... 149 OnStar ...... 482 Procedure ...... 465 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

494 Index D Driving (cont'd) Engine (cont'd) Damage Repair, Collision ...... 472 For Better Fuel Economy ...... 33 Check Light (Malfunction Danger, Warning, and Caution . . . . 3 Hill and Mountain Roads ...... 245 Indicator) ...... 150 Data Collection If the Vehicle is Stuck ...... 247 Compartment Overview ...... 345 Infotainment System ...... 478 Loss of Control ...... 238 Coolant Heater ...... 260 OnStar ...... 478 Off-Road ...... 239 Coolant Temperature Data Recorders, Event ...... 477 Off-Road Recovery ...... 238 Gauge ...... 144 Daytime Running Vehicle Load Limits ...... 248 Coolant Temperature Lamps (DRL) ...... 179 Wet Roads ...... 244 Warning Light ...... 155 Defensive Driving ...... 236 Winter ...... 245 Cooling System ...... 359 Diagnostics Dual Automatic Climate Drive Belt Routing ...... 464 OnStar ...... 484 Control System ...... 228 Exhaust ...... 264 Distracted Driving ...... 235 E Fan ...... 365 Oil Life System ...... 353 Dome Lamps ...... 183 E85 or FlexFuel ...... 300 Oil Pressure Gauge ...... 143 Door Electrical Equipment, Oil Pressure Light ...... 156 Ajar Light ...... 158 Add-On ...... 336 Overheated Protection Locks ...... 40 Electrical System Operating Mode ...... 364 Power Locks ...... 41 Engine Compartment Fuse Overheating ...... 363 Drive Belt Routing, Engine ...... 464 Block ...... 381 Power Messages ...... 164 Driver Assistance Systems . . . . . 288 Fuses and Circuit Breakers . . . 381 Running While Parked ...... 265 Driver Information Instrument Panel Fuse Starting ...... 258 Center (DIC) ...... 158, 160 Block ...... 385, 386 Entry Lighting ...... 184 Driving Overload ...... 380 Equipment, Towing ...... 325 Assistance Systems ...... 292 Emergency Event Data Recorders ...... 477 Characteristics and OnStar ...... 480 Exit Lighting ...... 184 Towing Tips ...... 303 Engine Extender, Seat Belt ...... 75 Defensive ...... 236 Air Cleaner/Filter ...... 358 Drunk ...... 236 Exterior Lamp Controls ...... 176 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Index 495 Exterior Lamps Off Reminder . . . 178 Fluid (cont'd) Full-Size Spare Tire ...... 425 Exterior Lighting Battery Washer ...... 366 Fuses Saver ...... 185 Fog Lamps ...... 181 Engine Compartment Fuse Folding Mirrors ...... 49 F Block ...... 381 Forward Automatic Braking . . . . . 294 Fuses and Circuit Breakers . . . 381 Fan Forward Collision Alert Instrument Panel Fuse Engine ...... 365 (FCA) System ...... 292 Block ...... 385, 386 Fast Idle System ...... 259 Four-Wheel Drive ...... 272, 370 Features G Four-Wheel-Drive Light ...... 153 Memory ...... 13 Garage Door Opener ...... 172 Frequency Statement Filter, Programming ...... 172 Radio ...... 475 Engine Air Cleaner ...... 358 Gas Strut(s) ...... 376 Front Axle ...... 370 Fixed Mast Antenna ...... 194 Gauges Front Fog Lamp Flash-to-Pass ...... 179 Engine Coolant Light ...... 157 Flashers, Hazard Warning ...... 180 Temperature ...... 144 Front Seats Flat Tire ...... 413 Engine Oil Pressure ...... 143 Adjustment ...... 59 Changing ...... 415 Fuel ...... 142 Heated and Ventilated ...... 65 FlexFuel Odometer ...... 142 Fuel ...... 299 E85 ...... 300 Speedometer ...... 142 Additives ...... 300 Floor Console Storage ...... 126 Tachometer ...... 142 Economy Driving ...... 33 Floor Mats ...... 444 Transmission Temperature . . . . 145 Filling a Portable Fuel Fluid Trip Odometer ...... 142 Container ...... 303 Automatic Voltmeter ...... 145 Filling the Tank ...... 301 Transmission ...... 354, 357 Warning Lights and Foreign Countries ...... 300 Brakes ...... 368 Indicators ...... 137 Gauge ...... 142 Four-Wheel Drive General Information Low Fuel Warning Light ...... 156 Transfer Case ...... 272 Service and Maintenance . . . . . 446 Management, Active ...... 264 Power Steering ...... 365 Towing ...... 303 Requirements, California . . . . . 300 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

496 Index General Information (cont'd) Heater Infants and Young Children, Vehicle Care ...... 342 Engine Coolant ...... 260 Restraints ...... 94 Glove Box ...... 124 Heating ...... 224, 226, 228 Infotainment ...... 186 GM Mobility Reimbursement High Voltage Devices and Infotainment System ...... 478 Program ...... 469 Wiring ...... 380 Instrument Cluster ...... 138 H High-Beam On Light ...... 157 Instrument Panel High-Speed Operation ...... 399 Storage Area ...... 124 Halogen Bulbs ...... 378 Hill and Mountain Roads ...... 245 Interior Rearview Mirrors ...... 51 Hazard Warning Flashers ...... 180 Hill Descent Control (HDC) . . . . . 284 Introduction ...... 2 Head Restraints ...... 58 Hill Descent Control Light ...... 153 Headlamps J Hill Start Assist (HSA) ...... 282 Aiming ...... 377 Jack Home Page ...... 189 Automatic ...... 179 Auxiliary ...... 203 Hood ...... 344 Bulb Replacement ...... 378 Jump Starting - North Horn ...... 130 Daytime Running America ...... 426 How to Wear Seat Belts Lamps (DRL) ...... 179 Properly ...... 70 K Flash-to-Pass ...... 179 HVAC ...... 224, 226, 228 Keyless Entry High Intensity Discharge Remote (RKE) System ...... 37 (HID) Lighting ...... 378 I Keys ...... 34 High-Beam On Light ...... 157 Idle System High/Low Beam Changer . . . . . 179 Fast ...... 259 L Lamps On Reminder ...... 157 Ignition Positions ...... 256 Labeling, Tire Sidewall ...... 391 Heated Ignition Transmission Lock Lamps Steering Wheel ...... 130 Check ...... 374 Auxiliary Roof Heated and Ventilated Front Immobilizer ...... 46 Mounted Lamp ...... 182 Seats ...... 65 Indicator Cargo ...... 183 Heated Mirrors ...... 50 Vehicle Ahead ...... 154 Daytime Running (DRL) ...... 179 Dome ...... 183 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Index 497 Lamps (cont'd) Lighting (cont'd) Lights (cont'd) Exterior Controls ...... 176 LED ...... 378 Tire Pressure ...... 156 Exterior Lamps Off Lights Tow/Haul Mode ...... 153 Reminder ...... 178 Airbag On-Off ...... 147 Traction Control System Exterior Lighting Battery Airbag Readiness ...... 147 (TCS)/StabiliTrak ...... 155 Saver ...... 185 Antilock Brake System Traction Off ...... 154 Malfunction Indicator (ABS) Warning ...... 152 Locking Rear Axle ...... 285 (Check Engine) ...... 150 Brake System Warning ...... 152 Locks On Reminder ...... 157 Charging System ...... 149 Automatic Door ...... 41 Reading ...... 183 Check Engine (Malfunction Door ...... 40 Lane Departure Indicator) ...... 150 Lockout Protection ...... 42 Warning (LDW) ...... 295 Cruise Control ...... 158 Power Door ...... 41 Lane Departure Warning Door Ajar ...... 158 Safety ...... 42 Light ...... 153 Engine Coolant Loss of Control ...... 238 Lane Keep Assist (LKA) ...... 297 Temperature Warning ...... 155 Low Fuel Warning Light ...... 156 Lane Keep Assist Light ...... 154 Engine Oil Pressure ...... 156 Low-Profile Tires ...... 390 Lap Belt ...... 75 Flash-to-Pass ...... 179 Lower Anchors and Tethers Lap-Shoulder Belt ...... 71 Four-Wheel-Drive ...... 153 for Children (LATCH LATCH System Front Fog Lamp ...... 157 System) ...... 99 Replacing Parts after a High-Beam On ...... 157 Lumbar Adjustment ...... 60 Crash ...... 111 High/Low Beam Changer . . . . . 179 Front Seats ...... 60 LATCH, Lower Anchors and Hill Descent Control ...... 153 M Tethers for Children ...... 99 Lane Departure Warning ...... 153 Maintenance LED Lighting ...... 378 Lane Keep Assist ...... 154 Records ...... 459 Lighting Low Fuel Warning ...... 156 Maintenance and Care Entry ...... 184 Seat Belt Reminders ...... 146 Additional ...... 453 Exit ...... 184 Security ...... 157 Maintenance Schedule ...... 448 Illumination Control ...... 182 StabiliTrak OFF ...... 154 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

498 Index Maintenance Schedule (cont'd) Mirrors (cont'd) OnStar Connections ...... 482 Recommended Fluids and Trailer Tow ...... 48 OnStar Diagnostics ...... 484 Lubricants ...... 456 Mirrors, Interior Rearview ...... 51 OnStar Emergency ...... 480 Transfer Case ...... 272 Monitor System, Tire OnStar Navigation ...... 481 Malfunction Indicator Lamp . . . . . 150 Pressure ...... 399 OnStar Overview ...... 479 Manual Mirrors ...... 47 Multi-band Antenna ...... 194 OnStar Security ...... 481 Manual Mode ...... 268 N Operating Mode Manual Windows ...... 52 Overheated Engine Navigation Media Protection ...... 364 OnStar ...... 481 Avoiding Untrusted Devices . . 195 Operation New Vehicle Break-In ...... 255 Memory Features ...... 13 Fog Lamps ...... 181 Noise Control System ...... 373 Memory Seats ...... 62 Ordering Messages O Service Publications ...... 474 Engine Power ...... 164 Odometer ...... 142 Outlets Vehicle ...... 164 Trip ...... 142 Power ...... 133 Vehicle Speed ...... 164 Off-Road ...... 239 Overheated Engine Mirrors Driving ...... 239 Protection Operating Mode . . . . 364 Automatic Dimming ...... 50 Recovery ...... 238 Overheating, Engine ...... 363 Automatic Dimming Oil Overview ...... 188 Rearview ...... 52 Engine ...... 350 P Blind Spot ...... 50 Engine Oil Life System ...... 353 Park Convex ...... 47 Engine Oil Pressure Gauge . . . 143 Shifting Into ...... 262 Folding ...... 49 Pressure Light ...... 156 Shifting Out of ...... 263 Heated ...... 50 Older Children, Restraints ...... 92 Parking Manual ...... 47 Online Owner Center ...... 468 Brake ...... 281 Manual Rearview ...... 52 OnStar ...... 478 Brake and P (Park) Power ...... 48 OnStar Additional Mechanism Check ...... 375 Tilt in Reverse ...... 51 Information ...... 485 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Index 499 Parking (cont'd) Power (cont'd) Rearview Mirrors (cont'd) Over Things That Burn ...... 264 Seat Adjustment ...... 60 Automatic Dimming ...... 52 Parking Assist ...... 289 Steering Fluid ...... 365 Reclining Seatbacks ...... 61 Parking or Backing Windows ...... 52 Recognition Assistance Systems ...... 289 Power Assist Steps ...... 43 Voice ...... 205 Passenger Airbag Status Pregnancy, Using Seat Belts . . . . 74 Recommended Fluids and Indicator ...... 149 Privacy Lubricants ...... 456 Passenger Compartment Air Vehicle Data Recording ...... 477 Records Filter ...... 232 Program Maintenance ...... 459 Passenger Sensing System . . . . . 86 Courtesy Transportation ...... 471 Recreational Vehicle Towing . . . . 430 Perchlorate Materials Proposition Reimbursement Program, Requirements, California ...... 343 65 Warning, GM Mobility ...... 469 Personalization California ...... 343,369, 426, Remote Keyless Entry (RKE) Vehicle ...... 165 Back Cover System ...... 37 Phone R Remote Vehicle Start ...... 39 Apple CarPlay and Replacement Parts Radio Frequency Statement . . . . 475 Android Auto ...... 217 Airbags ...... 92 Radio Reception ...... 193 Bluetooth ...... 211, 213 Maintenance ...... 458 Radios Pickup Conversion to Replacing Airbag System ...... 92 AM-FM Radio ...... 190 Chassis Cab ...... 340 Replacing LATCH System Satellite ...... 192 Port Parts after a Crash ...... 111 Reading Lamps ...... 183 USB ...... 197 Replacing Seat Belt System Rear Axle ...... 371 Power Parts after a Crash ...... 76 Locking ...... 285 Door Locks ...... 41 Reporting Safety Defects Rear Seats ...... 66, 68 Mirrors ...... 48 Canadian Government ...... 476 Rear Vision Camera (RVC) . . . . . 289 Outlets ...... 133 General Motors ...... 477 Rear Windows ...... 54 Protection, Battery ...... 185 U.S. Government ...... 476 Rearview Mirrors ...... 52 Retained Accessory (RAP) . . . 260 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

500 Index Restraints Seat Belts (cont'd) Service (cont'd) Where to Put ...... 98 How to Wear Seat Belts Climate Control Retained Accessory Properly ...... 70 System ...... 224, 226 Power (RAP) ...... 260 Lap Belt ...... 75 Doing Your Own Work ...... 344 Reverse Tilt Mirrors ...... 51 Lap-Shoulder Belt ...... 71 Maintenance Records ...... 459 Roads Reminders ...... 146 Maintenance, General Driving, Wet ...... 244 Replacing after a Crash ...... 76 Information ...... 446 Roadside Assistance Use During Pregnancy ...... 74 Parts Identification Label . . . . . 460 Program ...... 469 Seats Publications Ordering Roof Adjustment, Front ...... 59 Information ...... 474 Sunroof ...... 55 Center Seat ...... 59 Scheduling Appointments . . . . . 471 Rotation, Tires ...... 405 Head Restraints ...... 58 Services Routing, Engine Drive Belt ...... 464 Heated and Ventilated Front . . . .65 Special Application ...... 453 Running the Vehicle While Lumbar Adjustment, Front ...... 60 Servicing the Airbag ...... 90 Parked ...... 265 Memory ...... 62 Shift Lock Control Function Power Adjustment, Front ...... 60 Check, Automatic S Rear ...... 66, 68 Transmission ...... 374 Safety Defects Reporting Reclining Seatbacks ...... 61 Shifting Canadian Government ...... 476 Securing Child Into Park ...... 262 General Motors ...... 477 Restraints ...... 111, 114, 115 Out of Park ...... 263 U.S. Government ...... 476 Security Signals, Turn and Safety Locks ...... 42 Light ...... 157 Lane-Change ...... 181 Safety System Check ...... 75 OnStar ...... 481 Snow Plow ...... 337 Satellite Radio ...... 192 Vehicle ...... 44 Software Updates ...... 189 Scheduling Appointments ...... 471 Vehicle Alarm ...... 44 Special Application Services . . . . 453 Seat Belts ...... 69 Service ...... 233 Specifications and Care ...... 76 Accessories and Capacities ...... 461 Extender ...... 75 Modifications ...... 343 Speedometer ...... 142 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Index 501 StabiliTrak Switches Tires (cont'd) OFF Light ...... 154 Airbag On-Off ...... 84 Different Size ...... 409 Start Assist, Hill ...... 282 Symbols ...... 3 Full-Size Spare ...... 425 Start Vehicle, Remote ...... 39 System If a Tire Goes Flat ...... 413 Starter Switch Check ...... 374 Forward Collision Inspection ...... 404 Starting the Engine ...... 258 Alert (FCA) ...... 292 Low Profile ...... 390 Steering ...... 237 Infotainment ...... 186, 478 Pressure ...... 397, 399 Fluid, Power ...... 365 Noise Control ...... 373 Pressure Light ...... 156 Heated Wheel ...... 130 Systems Pressure Monitor Operation . . 400 Wheel Adjustment ...... 129 Driver Assistance ...... 288 Pressure Monitor System . . . . . 399 Rotation ...... 405 Wheel Controls ...... 129 T Steps Sidewall Labeling ...... 391 Tachometer ...... 142 Power Assist ...... 43 Terminology and Definitions . . 395 Tailgate ...... 43 Stoplamps and Back-up Lamps Uniform Tire Quality Taillamps Bulb Replacement ...... 378 Grading ...... 410 Bulb Replacement ...... 378 Storage Areas Wheel Alignment and Tire Text Telephone (TTY) Users . . . . 468 Center Console ...... 125 Balance ...... 411 Theft-Deterrent Systems ...... 46 Floor Console ...... 126 Wheel Replacement ...... 412 Immobilizer ...... 46 Glove Box ...... 124 When It Is Time for New Throttle, Adjustable ...... 256 Instrument Panel ...... 124 Tires ...... 407 Time ...... 132 Sunglasses ...... 125 Winter ...... 390 Tires ...... 389 Storage Compartments ...... 124 Tow/Haul Mode ...... 271 All-Season ...... 389 Struts Tow/Haul Mode Light ...... 153 All-Terrain ...... 391 Gas ...... 376 Towing Buying New Tires ...... 408 Stuck Vehicle ...... 247 Driving Characteristics ...... 303 Chains ...... 413 Sun Visors ...... 55 Equipment ...... 325 Changing ...... 415 Sunglass Storage ...... 125 General Information ...... 303 Designations ...... 393 Sunroof ...... 55 Recreational Vehicle ...... 430 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

502 Index Towing (cont'd) Turn Signal Vehicle Care Trailer ...... 307 Bulb Replacement ...... 378 Tire Pressure ...... 397 Trailer Sway Control (TSC) . . . 334 U Vehicle Data Recording and Vehicle ...... 430 Privacy ...... 477 Uniform Tire Quality Grading . . . 410 Traction Ventilation, Air ...... 231 Universal Remote System ...... 172 Control System (TCS)/ Visors ...... 55 Operation ...... 174 StabiliTrak Light ...... 155 Voice Recognition ...... 205 Programming ...... 172 Off Light ...... 154 Voltage Devices and Wiring . . . . 380 Updates Traction Control/Electronic Voltmeter Gauge ...... 145 Software ...... 189 Stability Control ...... 282 USB Port ...... 197 W Trademarks and License Using This Manual ...... 2 Warning Agreements ...... 218 Brake System Light ...... 152 Trailer V Caution and Danger ...... 3 Sway Control (TSC) ...... 334 Vehicle Lane Departure (LDW) ...... 295 Tow Mirrors ...... 48 Alarm System ...... 44 Warning Lights, Gauges, and Towing ...... 307 Canadian Owners ...... 2 Indicators ...... 137 Transfer Case ...... 272 Control ...... 236 Warnings Transmission Identification Number (VIN) . . . 460 Hazard Flashers ...... 180 Automatic ...... 265 Load Limits ...... 248 Washer Fluid ...... 366 Fluid, Automatic ...... 354, 357 Messages ...... 164 Wheels Temperature Gauge ...... 145 Personalization ...... 165 Alignment and Tire Balance . . .411 Transportation Program, Remote Start ...... 39 Different Size ...... 409 Courtesy ...... 471 Security ...... 44 Replacement ...... 412 Trip Odometer ...... 142 Speed Messages ...... 164 When It Is Time for New Truck-Camper Loading Towing ...... 430 Tires ...... 407 Information ...... 253 Vehicle Ahead Indicator ...... 154 Where to Put the Restraint ...... 98 Turn and Lane-Change Wi-Fi ...... 482 Signals ...... 181 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-11349177) - 2018 - CRC - 10/17/17

Index 503 Windows ...... 52 Manual ...... 52 Power ...... 52 Rear ...... 54 Windshield Replacement ...... 376 Wiper/Washer ...... 130 Winter Driving ...... 245 Winter Tires ...... 390 Wiper Blade Replacement ...... 375 Wireless Charging ...... 134 Wiring, High Voltage Devices . . . 380 18_GMC_Sierra_SierraDenalli_COV_en_US_84016542B_2017OCT18.ai 1 10/10/2017 1:56:03 PM

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