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19_GMC_Sierra_Sierra_Denali_COV_en_US_23400205A_2018MAY17.ai 1 5/8/2018 3:00:43 PM 2019 Sierra/Sierra Denali

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23400205 A GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Contents Introduction ...... 2 In Brief ...... 5 Keys, Doors, and Windows . . . . . 30 Seats and Restraints ...... 67 Storage ...... 125 Instruments and Controls ...... 129 Lighting ...... 176 Infotainment System ...... 187 Climate Controls ...... 188 Driving and Operating ...... 196 Care ...... 311 Service and Maintenance . . . . . 413 Technical Data ...... 429 Customer Information ...... 433 Reporting Safety Defects ...... 443 OnStar ...... 447 Connected Services ...... 455 Index ...... 459 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

2 Introduction Introduction This manual describes features that Propriétaires Canadiens may or may not be on the vehicle On peut obtenir un exemplaire de because of optional equipment that ce guide en français auprès du was not purchased on the vehicle, concessionnaire ou à l'adresse model variants, country suivante: specifications, features/applications that may not be available in your Helm, Incorporated region, or changes subsequent to Attention: Customer Service the printing of this owner’s manual. 47911 Halyard Drive Plymouth, MI 48170 The names, logos, emblems, If the vehicle has the Duramax USA slogans, vehicle model names, and diesel engine, see the Duramax vehicle body designs appearing in diesel supplement for additional and this manual including, but not limited specific information on this engine. Using this Manual to, GM, the GM logo, GMC, the To quickly locate information about GMC Truck Emblem, SIERRA, and Refer to the purchase documentation relating to your the vehicle, use the Index in the DENALI are trademarks and/or back of the manual. It is an service marks of specific vehicle to confirm the features. alphabetical list of what is in the LLC, its subsidiaries, affiliates, manual and the page number where or licensors. Keep this manual in the vehicle for it can be found. For first sold in Canada, quick reference. substitute the name “General Danger, Warning, and Canadian Vehicle Owners Motors of Canada Company” for Caution GMC Division wherever it appears A French language manual can be in this manual. obtained from your dealer, at Warning messages found on vehicle www.helminc.com, or from: labels and in this manual describe hazards and what to do to avoid or reduce them. Litho in U.S.A. Part No. 23400205 A First Printing © 2018 General Motors LLC. All Rights Reserved. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Introduction 3 A circle with a slash through it is a Vehicle Symbol Chart { Danger safety symbol which means “Do Here are some additional symbols Not,”“Do not do this,” or “Do not let Danger indicates a hazard with a that may be found on the vehicle this happen.” high level of which will result and what they mean. See the in serious or death. features in this manual for Symbols information. The vehicle has components and u : Air Conditioning System labels that use symbols instead of G { Warning text. Symbols are shown along with : Air Conditioning Refrigerant Oil the text describing the operation or 9 : Readiness Light Warning indicates a hazard that information relating to a specific ! : Antilock System (ABS) could result in injury or death. component, control, message, gauge, or indicator. $ : Brake System Warning Light M : Shown when the owner’s 9 : Dispose of Used Components Caution manual has additional instructions Properly or information. P : Do Not Apply High Pressure Caution indicates a hazard that * : Shown when the service Water could result in property or vehicle manual has additional instructions B : Engine Coolant Temperature damage. or information. 0 _ : Flame/Fire Prohibited : Shown when there is more H information on another page — : Flammable “see page.” [ : Forward Collision Alert R : Fuse Block Cover Lock Location + : Fuses j : ISOFIX/ System Child Restraints GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

4 Introduction Q : Keep Fuse Block Covers Properly Installed | : Lane Change Alert @ : Lane Departure Warning A : Lane Keep Assist * : Malfunction Indicator Lamp : : Oil Pressure X : Park Assist ~ : Pedestrian Ahead Indicator O : Power 7 : Rear Cross Alert I : Registered Technician / : Remote Vehicle Start > : Reminders I : Side Blind Zone Alert h : Start/Stop 7 : Tire Pressure Monitor d : Traction Control/StabiliTrak/ Electronic Stability Control (ESC) a : Under Pressure V : Vehicle Ahead Indicator GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

In Brief 5 Vehicle Features Fuel (Gasoline - L87 6.2L In Brief Infotainment System ...... 22 Engine) ...... 28 Controls ...... 22 Fuel (Diesel) ...... 28 Instrument Panel ...... 22 E85 or FlexFuel ...... 28 Driver Information Engine Oil Life System ...... 28 Instrument Panel ...... 6 Center (DIC) ...... 22 Driving for Better Fuel Initial Drive Information Forward Collision Alert (FCA) Economy ...... 29 Initial Drive Information ...... 8 System ...... 23 Roadside Assistance Stop/Start System ...... 8 Forward Automatic Program ...... 29 Remote Keyless Entry (RKE) Braking (FAB) ...... 23 System ...... 9 Front Pedestrian Braking (FPB) Remote Vehicle Start ...... 9 System ...... 23 Door Locks ...... 10 Lane Keep Assist (LKA) ...... 24 Windows ...... 10 Lane Change Alert (LCA) ...... 24 Seat Adjustment ...... 11 Surround Vision ...... 24 Memory Features ...... 12 Rear Vision Camera (RVC) . . . . 24 Heated and Ventilated Seats . . . 13 Rear Cross Traffic Alert (RCTA) Head Restraint Adjustment . . . . 13 System ...... 24 Seat Belts ...... 14 Park Assist ...... 24 Passenger Sensing System . . . 14 Power Outlets ...... 25 Mirror Adjustment ...... 14 Universal Remote System . . . . . 25 Steering Wheel Adjustment . . . . 16 Sunroof ...... 25 Interior Lighting ...... 16 Performance and Maintenance Exterior Lighting ...... 17 Traction Control/Electronic Wiper/Washer ...... 18 Stability Control ...... 26 Climate Controls ...... 19 Tire Pressure Monitor ...... 27 Transmission ...... 20 Fuel (Gasoline - Except Four-Wheel Drive ...... 21 L87 6.2L Engine) ...... 27 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

6 In Brief Instrument Panel GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

In Brief 7 1. Tow/Haul Mode (On Some 9. Climate Control Systems 0 188 DC/AC Switch. See Power Models). See Driver Mode (If Equipped). Outlets 0 132. Control 0 246. Dual Automatic Climate Control h Auto Stop Disable Switch 0 Automatic Transfer Case System 190 (If Equipped). (If Equipped). See Stop/Start Control (If Equipped). See System 0 222. 0 10. Heated and Ventilated Front Four-Wheel Drive 235. Seats 0 75 (If Equipped). L Express Window Down Driver Mode Control 0 246 (If Equipped). 11. X Park Assist Switch (If Button (If Equipped). See Equipped). See Assistance Power Windows 0 63. 2. Air Vents 0 194. Systems for Parking or Backing Tow/Haul Mode (On Some 0 3. Head-Up Display (HUD) 0 163 254. Models). See Driver Mode (If Equipped). 0 g Traction Control/Electronic Control 246. 4. Turn Signal Lever. See Turn Stability Control 0 243. 12. Power Outlet (Alternating and Lane-Change Signals Current) (If Equipped). See 0 181. | Hazard Warning Flashers Power Outlets 0 132. 0 180. Windshield Wiper/Washer 13. Power Outlets 0 132. 0 131. A Lane Keep Assist (LKA) 0 14. USB Port. See the infotainment 5. Instrument Cluster 0 138. 269 (If Equipped). manual. 6. Shift Lever. See Automatic 5 Hill Descent Control Switch 15. Wireless Charging 0 135 (If Transmission 0 229. (If Equipped). See Hill Descent Equipped). Control (HDC) 0 245. Range Selection Mode. See 16. Trailer Brake Control Panel (If 0 Manual Mode 232. j Power Assist Steps 0 52 (If Equipped). See “Integrated 7. Light Sensor. See Automatic Equipped). Trailer Brake Control System” Headlamp System 0 179. under Towing Equipment 5 Power Release Tailgate 0 285. 8. Infotainment 0 187. (If Equipped). See Tailgate 0 47. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

8 In Brief 17. ENGINE START/STOP. 24. Electric 0 241. Initial Drive See Ignition Positions (Key 0 0 25. Fog Lamps 181 (If Access) 217 or Ignition Equipped). Information Positions (Keyless Access) This section provides a brief 0 219. Instrument Panel Illumination Control 0 183. overview about some of the 18. Steering Wheel Controls 0 131 important features that may or may (If Equipped). Exterior Cargo Lamps 0 182. not be on your specific vehicle. Driver Information Center (DIC) Exterior Lamp Controls 0 176. For more detailed information, refer Controls. Task Lighting 0 182 (If to each of the features which can be See Driver Information Center Equipped). found later in this owner’s manual. (DIC) (Midlevel and Uplevel) 0 160 or Driver Information Stop/Start System Center (DIC) (Base Level) 0 159. If equipped, the Stop/Start system will shut off the engine to help 0 19. Horn 131. conserve fuel. It has components 20. Hood Release. See Hood designed for the increased number 0 314. of starts. 21. Steering Wheel Adjustment When the are applied and 0 130 (Out of View). the vehicle is at a complete stop, 0 the engine may turn off. When 22. Cruise Control 250. stopped, the displays Forward Collision Alert (FCA) AUTO STOP. See Tachometer System 0 260 (If Equipped). 0 143. When the brake pedal is 23. Data Link Connector (DLC) released or the accelerator pedal is pressed, the engine will restart. See (Out of View). See Malfunction 0 Indicator Lamp (Check Engine Stop/Start System 222. Light) 0 149. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

In Brief 9 Remote Keyless Entry x : Press twice quickly to release (RKE) System the tailgate, if equipped. 0 The Remote Keyless Entry (RKE) See Keys 30 and Remote Keyless Entry (RKE) System Operation transmitter functions may work from 0 up to 60 m (197 ft) away from the (Keyless Access) 33 or Remote vehicle. Keyless Entry (RKE) System Operation (Key Access) 0 41. Remote Vehicle Start If equipped, the engine can be started from outside of the vehicle. Key Access Starting the Vehicle K : Press to unlock the driver door. Press K again within three seconds 1. Press and release Q on the to unlock all remaining doors and RKE transmitter. the tailgate, if equipped. 2. Immediately press and hold / Q : Press to lock all doors and the for at least four seconds or until Keyless Access tailgate, if equipped. Lock and the turn signal lamps flash. unlock feedback can be Start the vehicle normally after personalized. See Vehicle entering. Personalization 0 167. When the vehicle starts, the parking 7 : Press and release one time to lamps will turn on. initiate vehicle locator. Press 7 and Remote start can be extended. hold for more than three seconds to sound the panic alarm. Press 7 again to cancel the panic alarm. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

10 In Brief Canceling a Remote Start . Push down or pull up on the Windows manual door locks. To cancel a remote start, do one of Power Windows the following: . Pull the door handle once to unlock the door. Pull again to . Press and hold / until the open the door. parking lamps turn off. . Turn on the hazard warning flashers. . Turn the vehicle on and then off. See Remote Vehicle Start 0 43. Door Locks There are several ways to lock and unlock the vehicle. From outside, use one of the Power windows work when the following: ignition is on, in ACC/ACCESSORY, or when Retained Accessory Power . Keyless Access, if equipped. (RAP) is active. See Retained . The Remote Keyless Entry Accessory Power (RAP) 0 225. (RKE) transmitter. Q : Press to lock the doors. Using the window switch, press to . The key in the driver door (Key K : Press to unlock the doors. open or pull to close the window. Access). For Keyless Access, See Door Locks 0 44 and Power The windows may be temporarily push the button on the RKE Door Locks 0 45. transmitter to remove the key. disabled if they are used repeatedly within a short time. From inside: See Power Windows 0 63. . Use the power door lock switch. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

In Brief 11 Power Sliding Rear Window Seat Adjustment Power Seats Manual Seats

If equipped, the power sliding rear To adjust a power seat, if equipped: window works when the ignition has Move the seat forward or To adjust a manual seat: . been turned on or to ACC/ rearward by sliding the control ACCESSORY, or when Retained 1. Pull the handle at the front of forward or rearward. Accessory Power (RAP) is active. the seat. See Retained Accessory Power . Raise or lower the front part of (RAP) 0 225. 2. Slide the seat to the desired the seat cushion by moving the position and release the front of the control up or down. Using the window switch, press to handle. open or pull to close the window. . Raise or lower the seat by 3. Try to move the seat back and moving the rear of the control up The power sliding rear window forth to be sure it is locked in or down. cannot be operated manually. See place. Power Sliding Rear Window in See Power Seat Adjustment 0 70. “ ” 0 Rear Windows 0 65. See Seat Adjustment 69. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

12 In Brief Reclining Seatbacks To return the seatback to the upright . Tilt the top of the control forward position: to raise. Manual Reclining Seatbacks 1. Lift the lever fully without See Reclining Seatbacks 0 71. applying pressure to the seatback, and the seatback will Memory Features return to the upright position. 2. Push and pull on the seatback to make sure it is locked. See Reclining Seatbacks 0 71. Power Reclining Seatbacks

To adjust a manual seatback: 1. Lift the lever. The seatback will automatically If equipped, memory seats allow two fold forward. drivers to save and recall their 2. To recline, move the seatback unique seat positions for driving the rearward to the desired vehicle, and a shared exit position position, then release the lever for getting out of the vehicle. Other to lock the seatback in place. feature positions may also be To recline a power seatback, saved, such as power mirrors, 3. Push and pull on the seatback if equipped: if equipped. Memory positions are to make sure it is locked. linked to RKE transmitter 1 or 2 for . Tilt the top of the control automatic memory recalls. rearward to recline. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

In Brief 13 Before saving, adjust all available Heated and Ventilated Press C or { to ventilate the driver memory feature positions. Turn the or passenger seat. ignition on and then press and Seats release SET; a beep will sound. See Heated and Ventilated Front 0 Then immediately press and hold 1, Seats 75. 2, or B (Exit) until two beeps sound. To manually recall these Head Restraint positions, press and hold 1, 2, or B Adjustment until the saved position is reached. Do not drive until the head restraints When Seat Entry Memory is for all occupants are installed and enabled in vehicle personalization, adjusted properly. positions previously saved to To achieve a comfortable seating memory buttons 1 and 2 are position, change the seatback recalled when the ignition is recline angle as little as necessary changed from off to on or ACC/ Heated and Ventilated Seat while keeping the seat and the head ACCESSORY. Buttons Shown, Heated Seat restraint height in the proper When Seat Exit Memory is enabled Buttons Similar position. in vehicle personalization, the 0 If equipped, the buttons are on the See Head Restraints 68 and Seat feature automatically recalls the 0 center stack. To operate, the engine Adjustment 69. previously saved exit position when must be running. exiting the vehicle. Memory adjustments may not be Press I or + to heat the driver or available upon delivery or after passenger seatback only. service until steps in “Saving Press J or z to heat the driver or Memory Positions section are ” passenger seat cushion and performed. See Memory Seats 0 73. seatback. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

14 In Brief Seat Belts Passenger Sensing The passenger airbag status indicator will light on the overhead System console when the vehicle is started. See Passenger Airbag Status Indicator 0 148. Mirror Adjustment Using hood-mounted air deflectors and add-on convex mirror United States attachments could decrease mirror performance. Exterior Mirrors Manual Mirrors Refer to the following sections for If equipped, adjust manual mirrors important information on how to use by moving them up and down or left seat belts properly: Canada to right to see a little of the side of 0 . Seat Belts 79 The passenger sensing system the vehicle and to have a clear view behind the vehicle. . How to Wear Seat Belts Properly turns off the front outboard 0 80 passenger frontal airbag under See Manual Mirrors 0 56. certain conditions. No other airbag . Lap-Shoulder Belt 0 82 is affected by the passenger . Lower Anchors and Tethers for sensing system. See Passenger Children (LATCH System) 0 106 Sensing System 0 92. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

In Brief 15 Power Mirrors Interior Mirror Adjustment Adjust the mirror for a clear view of the area behind the vehicle. Manual Dimming Rearview Mirror If equipped, push the tab forward for daytime use and pull it for nighttime use to avoid glare from the headlamps from behind. See Manual Rearview Mirror 0 60. If equipped with power folding Automatic Dimming Rearview mirrors: Mirror 1. Select or for the driver or } | g If equipped, the mirror will passenger side mirror. The 1. Press to fold the mirrors in to the folded position. automatically reduce the glare of the switch will illuminate. headlamps from behind. The 2. Press the arrows on the control 2. Press g again to fold the dimming feature comes on when the pad to move the mirror up, mirrors out to the driving vehicle is started. down, right, or left. position. See Automatic Dimming Rearview 3. Adjust each outside mirror so For manual, power, and remote Mirror 0 60. that a little of the vehicle and folding mirrors, see Folding Mirrors the area behind it can be seen. 0 57. Rear Camera Mirror If equipped, this automatic dimming See Power Mirrors 0 56. The mirrors may also include a memory function that works with the rearview mirror provides a wide memory seats. See Memory Seats angle camera view of the area 0 73. behind the vehicle. Adjust the mirror GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

16 In Brief for a clear view of the area behind Tilt and Telescoping Wheel Interior Lighting the vehicle while the display is off. See Rear Camera Mirror 0 60. Dome Lamps Steering Wheel Adjustment

To adjust the tilt and telescoping steering wheel, if equipped: The dome lamp controls are in the 1. Pull the lever down. overhead console. 2. Move the steering wheel up To operate, press the following or down. To adjust the steering wheel: buttons: 3. Pull or push the steering wheel 1. Pull the lever down. j OFF : Press to turn off the closer or away from you. dome lamps when a door is open. 2. Move the steering wheel up 4. Pull the lever up to lock the An indicator light on the button will or down. steering wheel in place. turn on when the dome lamp 3. Pull the lever up to lock the Do not adjust the steering wheel override is activated. Press j steering wheel in place. while driving. OFF again to deactivate this feature GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

In Brief 17 and the indicator light will turn off. Press the lamp lenses to turn the Exterior Lighting The dome lamps will come on when front reading lamps on or off. doors are opened. + ON/OFF : Press to turn the dome lamps on manually. Press again to turn the dome lamps off. Reading Lamps There are reading lamps on the overhead console and over the rear seats. These lamps come on when any door is opened. Rear Reading Lamps The rear reading lamps are over the rear seats. Press the lamp lens to turn the rear The exterior lamp control is on the reading lamps on or off. instrument panel to the left of the steering wheel. For more information on interior lighting, see Instrument Panel O : Turns off the automatic Illumination Control 0 183. headlamps and Daytime Running Lamps (DRL). Turn the headlamp control to O again to turn the automatic headlamps or DRL back on. Front Reading Lamps For vehicles first sold in Canada, off will only work when the vehicle is in The front reading lamps are in the P (Park). overhead console. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

18 In Brief AUTO : Automatically turns on the Windshield Wiper/Washer L : Press L on the windshield headlamps, parking lamps, wiper control to spray windshield taillamps, instrument panel lights, washer fluid and activate the wipers. roof marker lamps (if equipped), front/rear sidemarker lamps, and See Windshield Wiper/Washer 0 license plate lamps. 131. ; : Turns on the parking lamps including all lamps, except the headlamps and fog lamps, if equipped. 5 : Turns on the headlamps together with the parking lamps, The windshield wiper control is on taillamps, instrument panel lights, the turn signal lever. roof marker lamps (if equipped), The windshield wipers are controlled front/rear sidemarker lamps, and by turning the band with N on it. license plate lamps. HI : Use for fast wipes. See: LO : Use for slow wipes. . Exterior Lamp Controls 0 176. 3 : Turn the band up for more . Daytime Running Lamps (DRL) 0 frequent intermittent wipes or down 179. for less frequent intermittent wipes. 0 . Fog Lamps 181. OFF : Use to turn the wipers off. 0 . Task Lighting 182. 1x : For a single wipe, briefly turn the z band down. For several wipes, hold the band down. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

In Brief 19 Climate Controls The heating, cooling, and ventilation in the vehicle can be controlled with these systems.

Climate Control System

1. Fan Control 5. (TEMP) Temperature Control 2. MAX Defrost 6. Recirculation 3. Air Delivery Mode Controls 7. Rear Window Defogger (If 4. A/C (Air Conditioning) Equipped) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

20 In Brief Transmission Range Selection Mode

The Range Selection Mode switch is on the shift lever. Dual Automatic Climate Control System 1. To enable the Range Selection feature, move the shift lever to 1. Driver and Passenger 8. Fan Control the L (Manual Mode) position. Temperature Controls 9. Rear Window Defogger (If The current range will appear 2. MAX Defrost Equipped) next to the L. This is the 3. Air Delivery Mode Controls 10. AUTO (Automatic Operation) highest attainable range with all lower gears accessible. As 4. A/C (Air Conditioning) See Climate Control Systems 0 188 an example, when 5 (Fifth) or Dual Automatic Climate Control gear is selected, 1 (First) 5. SYNC (Synchronized 0 Temperature) System 190 (If Equipped). through 5 (Fifth) gears are available. 6. Recirculation 2. Press the plus/minus buttons 7. Power Button on the shift lever to select the desired range of gears for current driving conditions. See Manual Mode 0 232. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

In Brief 21 While using Range Selection Mode, Automatic Transfer Case If equipped, use 4 n, AUTO, or 4 m to cruise control and the Tow/Haul provide additional traction when Mode can be used. parking on a steep grade with poor Grade Braking is not available when traction such as ice, snow, mud, Range Selection Mode is active. or gravel See Tow/Haul Mode 0 234. 4 m (Four-Wheel Drive High) : Use this setting when extra traction is Four-Wheel Drive needed for conditions such as rough If equipped with four-wheel drive, , deep snow or most off the engine's driving power can be situations. sent to all four wheels for extra The following options are only traction. available with a two-speed Transfer Case Controls transfer case: The transfer case controls are to the Use the transfer case controls to left of the steering column. N (Neutral) : Shift to this setting shift into and out of the different only when towing the vehicle. four-wheel drive modes. The different drive options that may See Recreational Vehicle Towing be available are described as 0 399 or Towing the Vehicle 0 398. follows. 4 n (Four-Wheel Drive Low) : This 2 m (Two-Wheel Drive High) : This setting sends maximum power to all setting is used for driving in most four wheels. Choose 4n when street and situations. driving in deep sand, mud, or snow, AUTO (Automatic Four-Wheel and while climbing or descending Drive) : This setting is ideal for use steep hills. when conditions are See Four-Wheel Drive 0 235. variable. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

22 In Brief Vehicle Features Cruise Control SET − : Press the control down briefly to set the speed and activate cruise control. If cruise control is Infotainment System already engaged, use to decrease See the infotainment manual for vehicle speed. information on the radio, audio * : Press to disengage cruise players, phone, navigation system, control without erasing the set and voice or speech recognition. speed from memory. It also includes information on 0 settings. See Cruise Control 250. Steering Wheel Controls Driver Information The infotainment system can be Center (DIC) operated by using the steering The DIC display is in the instrument wheel controls. See “Steering Wheel cluster. It shows the status of many Controls” in the infotainment 5 : If equipped, press to turn the vehicle systems. manual. system on or off. A white indicator comes on in the instrument cluster If the vehicle has the base level when cruise control is on and turns instrument cluster, the trip off when cruise control is off. reset stem is used to operate the DIC. + RES : If there is a set speed in memory, press the control up briefly If the vehicle has the uplevel to resume to that speed or press instrument cluster, the right steering and hold to accelerate. If cruise wheel controls are used to operate control is already engaged, use to the DIC. increase vehicle speed. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

In Brief 23 Forward Collision Alert vehicle. This can help avoid or lessen the severity of crashes when (FCA) System driving in a forward gear. If equipped, FCA may help avoid or See Forward Automatic Braking reduce the harm caused by (FAB) 0 263. front-end crashes. FCA provides a green indicator, V, when a vehicle Front Pedestrian Braking is detected ahead. This indicator displays amber when following a (FPB) System vehicle much too closely. When If equipped, the FPB system may approaching a vehicle ahead too help avoid or reduce the harm quickly, FCA provides a flashing red caused by front-end crashes with alert on the windshield and rapidly nearby pedestrians when driving in y or z : Use the thumbwheel to beeps or pulses the driver seat. a forward gear. FPB displays an scroll up or down in a list. Press the See Forward Collision Alert (FCA) amber indicator, ~, when a nearby thumbwheel to select. System 0 260. pedestrian is detected directly S or T : Press to move between ahead. When approaching a the interactive display zones in the Forward Automatic detected pedestrian too quickly, cluster. Press the thumbwheel to FPB provides a red flashing alert on select. Braking (FAB) the windshield and rapidly beeps or pulses the driver seat. FPB can See Driver Information Center (DIC) If the vehicle has Forward Collision provide a boost to braking or (Midlevel and Uplevel) 0 160 or Alert (FCA), it also has FAB, which automatically brake the vehicle. Driver Information Center (DIC) includes Intelligent Brake (Base Level) 0 159. Assist (IBA). When the system See Front Pedestrian Braking (FPB) detects a vehicle ahead in your path System 0 264. 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-1500-11698638) - 2019 - crc - 5/15/18

24 In Brief Lane Keep Assist (LKA) these areas from behind. The LCA See Assistance Systems for Parking warning display will light up in the or Backing 0 254. If equipped, LKA may help avoid corresponding outside mirror and crashes due to unintentional lane will flash if the turn signal is on. The Rear Cross Traffic Alert departures. It may assist by gently Side Blind Zone Alert (SBZA) (RCTA) System turning the steering wheel if the system is included as part of the vehicle approaches a detected lane LCA system. If equipped, the RCTA system marking without using a turn signal shows a triangle with an arrow on See Side Blind Zone Alert (SBZA) in that direction. It may also provide the infotainment display to warn of 0 267 and Lane Change Alert (LCA) a Lane Departure Warning (LDW) traffic behind your vehicle that may 0 267. alert as the lane marking is crossed. cross your vehicle's path while in The system will not assist or alert if R (Reverse). In addition, beeps will it detects that you are actively Surround Vision sound, or the driver seat will pulse. steering. Override LKA by turning If equipped, views around the the steering wheel. LKA uses a See Assistance Systems for Parking vehicle appear in the infotainment or Backing 0 254. camera to detect lane markings display to aid with parking and between 60 km/h (37 mph) and low-speed maneuvers. 180 km/h (112 mph). Park Assist See Surround Vision under “ ” If equipped, Rear Park Assist (RPA) See Lane Departure Warning (LDW) Assistance Systems for Parking or 0 uses sensors on the rear bumper to 269 and Lane Keep Assist (LKA) Backing 0 254. 0 269. assist with parking and avoiding Rear Vision objects while in R (Reverse). Lane Change Alert (LCA) It operates at speeds less than Camera (RVC) 8 km/h (5 mph). RPA may show a If equipped, the LCA system is a warning triangle on the infotainment lane-changing aid that assists If equipped, RVC shows a view of the area behind the vehicle on the display and a graphic on the drivers with avoiding lane change instrument cluster to provide the crashes that occur with moving infotainment display when the vehicle is shifted into R (Reverse) to object distance. In addition, multiple vehicles in the side blind zone areas beeps or seat pulses may occur if or with vehicles rapidly approaching aid with parking and low-speed backing maneuvers. very close to an object. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

In Brief 25 The vehicle may also have the Front Universal Remote System Sunroof Park Assist system. See Assistance Systems for Parking or Backing 0 254. Power Outlets Accessory power outlets can be used to plug in electrical equipment, such as a cell phone, MP3 player, etc. The vehicle has one accessory power outlet under the climate control system and one accessory power outlet on the rear of the If equipped, the Universal Remote center console, if equipped, or on 1. SLIDE Switch system enables the vehicle to 2. TILT Switch the rear of the , control three different devices, if equipped. ranging from garage doors and If equipped, the sunroof operates Lift the cover to access and replace gates to home lighting. These when the ignition is on or in ACC/ when not in use. buttons are in the overhead ACCESSORY, or when Retained console. Accessory Power (RAP) is active. See Power Outlets 0 132. See Retained Accessory Power See Universal Remote System (RAP) 0 225. 0 172. Slide Switch Express-Open/Express-Close : To express-open the sunroof, fully press and release I (1). Press and release I (1) again to stop the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

26 In Brief movement. To express-close the The sunroof has an automatic Performance and sunroof, fully press and release K reversal system that is only active when the sunroof is operated in Maintenance (1). Press and release K (1) express-close mode. again to stop the movement. If an object is in the path while Traction Control/ Open/Close (Manual Mode) : To express-closing, the reversal system Electronic Stability I open the sunroof, press and hold will detect an object, stop, and open Control (1). Release I (1) to stop the the sunroof again. The vehicle has a Traction Control movement. Press and hold K (1) See Sunroof 0 65. System (TCS) that limits wheel spin to close the sunroof. Release K and the StabiliTrak/Electronic (1) to stop the movement. Stability Control (ESC) system that assists with directional control of the Tilt Switch vehicle in difficult driving conditions. Vent : From the closed position, Both systems come on press J (2) to vent the sunroof. automatically when the vehicle is Press K (2) to close the vent. started and begins to move. . To turn off TCS, press and When the sunroof is opened, an air deflector will automatically raise. release g on the center stack. The air deflector will retract when The traction off light i displays the sunroof is closed. in the instrument cluster. The The sunroof also has a sunshade, appropriate Driver Information which can be pulled forward to block Center (DIC) message displays. sun rays. The sunshade must be . To turn off both TCS and opened and closed manually. StabiliTrak/ESC, press and hold g until i and g illuminate GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

In Brief 27 in the instrument cluster and the the tires to the recommended Fuel (Gasoline - Except appropriate DIC message pressure shown on the Tire and displays. Loading Information label. See L87 6.2L Engine) Vehicle Load Limits 0 209. The . Press and release g again to warning light will remain on until the turn on both systems. tire pressure is corrected. StabiliTrak/ESC will automatically The low tire pressure warning light turn on if the vehicle exceeds may come on in cool weather when 56 km/h (35 mph). Traction control the vehicle is first started, and then will remain off. turn off as the vehicle is driven. This Regular Unleaded Fuel See Traction Control/Electronic may be an early indicator that the Stability Control 0 243. tire pressures are getting low and Use only Regular 87 octane — the tires need to be inflated to the (R+M)/2 — or higher unleaded Tire Pressure Monitor proper pressure. gasoline in your vehicle. TOP TIER Detergent Gasoline is This vehicle may have a Tire The TPMS does not replace normal recommended. Do not use gasoline Pressure Monitor System (TPMS). monthly tire maintenance. Maintain with an octane rating lower as it will the correct tire pressures. result in reduced performance and See Tire Pressure Monitor System lower fuel economy. 0 369. See Recommended Fuel (Except 6.2L V8 Engine) 0 271 or Tire Fill Alert (If Equipped) Recommended Fuel (6.2L This feature provides visual and V8 Engine) 0 271. audible alerts outside the vehicle to The low tire pressure warning light help when inflating an underinflated alerts to a significant loss in tire to the recommended cold tire pressure of one of the vehicle's pressure. See “Tire Fill Alert (If tires. If the warning light comes on, Equipped)” under Tire Pressure 0 stop as soon as possible and inflate Monitor Operation 370. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

28 In Brief Fuel (Gasoline - L87 6.2L E85 or FlexFuel See Driver Information Center (DIC) (Midlevel and Uplevel) Engine) 0 160 or Driver Information Center (DIC) (Base Level) 0 159. 2. Press the thumbwheel on the steering wheel, or the trip odometer reset stem if the FlexFuel Possible vehicle does not have DIC controls, for several seconds. Premium Recommended Certain models are compatible with When the confirmation E85 fuel. See E85 or FlexFuel Use premium 93 octane — message displays, select YES. 0 272. (R+M)/2 — unleaded gasoline in The oil life will change your vehicle. TOP TIER Detergent to 100%. Gasoline is recommended. Engine Oil Life System Unleaded gasoline with an octane The oil life system can also be reset The engine oil life system calculates as follows: rating as low as 87 may be used, engine oil life based on vehicle use but it will reduce performance and and, on most vehicles, displays a 1. Display the oil life percentage fuel economy. DIC message when it is necessary on the DIC. See Recommended Fuel (Except to change the engine oil and filter. See Driver Information Center 0 6.2L V8 Engine) 271 or The oil life system should be reset (DIC) (Midlevel and Uplevel) 0 Recommended Fuel (6.2L to 100% only following an oil 160 or Driver Information 0 V8 Engine) 271. change. Center (DIC) (Base Level) 0 159. Resetting the Oil Life System Fuel (Diesel) 2. Fully press the accelerator For diesel vehicles, do not use To reset the engine oil life system: pedal slowly three times within gasoline. See “Fuel for Diesel 1. Display the oil life percentage five seconds. Engines” in the Duramax diesel on the DIC. 3. If the display changes to 100%, supplement. the system is reset. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

In Brief 29 See Engine Oil Life System 0 323. . Combine several trips into a single trip. Driving for Better Fuel . Replace the vehicle's tires with Economy the same TPC Spec number molded into the tire's sidewall Driving habits can affect fuel near the size. mileage. Here are some driving tips to get the best fuel economy . Follow recommended scheduled possible: maintenance. . Set the climate controls to the desired temperature after the Roadside Assistance engine is started, or turn them Program off when not required. U.S.: 1-888-881-3302 . Avoid fast starts and accelerate TTY Users (U.S. Only): smoothly. 1-888-889-2438 . Brake gradually and avoid Canada: 1-800-268-6800 abrupt stops. New GMC owners are automatically . Avoid idling the engine for long enrolled in the Roadside Assistance periods of time. Program. . When road and weather See Roadside Assistance Program conditions are appropriate, use 0 437. cruise control. . Always follow posted speed limits or drive more slowly when conditions require. . Keep vehicle tires properly inflated. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

30 Keys, Doors, and Windows Keys, Doors, and Immobilizer Operation ...... 55 Keys and Locks Exterior Mirrors Windows Convex Mirrors ...... 56 Keys Manual Mirrors ...... 56 Power Mirrors ...... 56 { Warning Keys and Locks Folding Mirrors ...... 57 Keys ...... 30 Heated Mirrors ...... 58 Leaving children in a vehicle with Remote Keyless Entry (RKE) Automatic Dimming Mirror . . . . . 58 System ...... 33 the ignition key is dangerous and Blind Spot Mirrors ...... 58 children or others could be Remote Keyless Entry (RKE) Reverse Tilt Mirrors ...... 59 System Operation (Keyless seriously injured or killed. They Access) ...... 33 Interior Mirrors could operate the power windows Remote Keyless Entry (RKE) Interior Rearview Mirrors ...... 60 or other controls or make the System Operation (Key Manual Rearview Mirror ...... 60 vehicle move. The windows will Access) ...... 41 Automatic Dimming Rearview function with the keys in the Remote Vehicle Start ...... 43 Mirror ...... 60 ignition, and children or others Door Locks ...... 44 Rear Camera Mirror ...... 60 could be caught in the path of a Power Door Locks ...... 45 Windows closing window. Do not leave Delayed Locking ...... 45 children in a vehicle with the Windows ...... 62 Automatic Door Locks ...... 46 ignition key. Lockout Protection ...... 46 Manual Windows ...... 63 Safety Locks ...... 46 Power Windows ...... 63 Rear Windows ...... 65 Doors Sun Visors ...... 65 Tailgate ...... 47 Power Assist Steps ...... 52 Roof Sunroof ...... 65 Vehicle Security Vehicle Security ...... 54 Vehicle Alarm System ...... 54 Immobilizer ...... 55 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Keys, Doors, and Windows 31 reduce the risk of unintentionally Warning (Continued) moving the key out of the RUN position. Do not add any additional impacted, and 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-1500-11698638) - 2019 - crc - 5/15/18

32 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 the glove box. 2. Turn the ignition on. The 6. After a few seconds, the If equipped with memory seats, security light will come on. security light will turn off once keys 1 and 2 are linked to seating the key has been programmed. 3. Wait 10 minutes until the positions of memory 1 or 2. See security light turns off. Memory Seats 0 73. 7. Repeat Steps 1–5 if additional keys are to be programmed. 4. Turn the ignition off. Programming Keys If a key is lost or damaged, see your 5. Repeat Steps 2–4 two more Follow these procedures to program dealer to have a new key made. times. After the third time, turn up to eight keys to the vehicle. the ignition on; the key is GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Keys, Doors, and Windows 33 learned and all previously With an active OnStar or connected Remote Keyless Entry known keys will no longer work service plan, an OnStar Advisor with the vehicle. may remotely unlock the vehicle. (RKE) System Operation 0 (Keyless Access) 6. To learn a second key, turn the See OnStar Overview 447. ignition off, insert the second The Keyless Access system allows key to be learned, and turn the Remote Keyless Entry for vehicle entry when the ignition on. (RKE) System transmitter is within 1 m (3 ft). See Keyless Access Operation later in After two keys are learned, the “ ” See Radio Frequency Statement this section. remaining keys can be learned by 0 443. following the procedure in The RKE transmitter functions may If there is a decrease in the Remote Programming with Two work up to 60 m (197 ft) away from “ Keyless Entry (RKE) operating Recognized Keys. the vehicle. ” range: The key has a bar-coded key tag Other conditions can affect the Check the distance. The that the dealer or qualified locksmith . performance of the transmitter. See transmitter may be too far from can use to make new keys. Store Remote Keyless Entry (RKE) the vehicle. this information in a safe place, not System 0 33. in the vehicle. . Check the location. Other vehicles or objects may be See your dealer if a replacement blocking the signal. key or additional key is needed. Check the transmitter's battery. If it becomes difficult to turn a key, . See Battery Replacement later inspect the key blade for debris. “ ” in this section. Periodically clean with a brush or pick. . If the transmitter is still not working correctly, see your If locked out of the vehicle, see dealer or a qualified technician Roadside Assistance Program for service. 0 437. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

34 Keys, Doors, and Windows chirps when Q is pressed again If enabled, the turn signal lamps within three seconds. See Vehicle flash twice to indicate unlocking has Personalization 0 167. occurred. If enabled, the exterior lamps may turn on. See Vehicle If the driver door is open when Q is Personalization 0 167. pressed, all doors will lock and then K the driver door will immediately Pressing on the RKE transmitter unlock, if enabled. See Vehicle disarms the alarm system. See 0 Personalization 0 167. Vehicle Alarm System 54. If the passenger door is open when If equipped with remote mirror Q is pressed, all doors lock. folding, pressing and holding K for one second will unfold the mirrors, Pressing Q arms the alarm system. if enabled. See Vehicle 0 / : Press and release Q, then See Vehicle Alarm System 54. Personalization 0 167. / If equipped with remote mirror immediately press and hold until Press and hold K until the windows the turn signal lamps flash or for at folding, pressing and holding Q for fully open, if remote window least four seconds. The engine may one second will fold the mirrors, operation is enabled. See Vehicle be started from outside the vehicle if enabled. See Vehicle Personalization 0 167. using the RKE transmitter. See Personalization 0 167. Remote Vehicle Start 0 43. x : Press twice quickly to release K : Press once to unlock only the the tailgate, if equipped. Q : Press to lock all doors and the driver door. If K is pressed again tailgate, if equipped. 7 : Press and release to initiate within three seconds, all remaining vehicle locator. The turn signal If enabled, the turn signal lamps doors and the tailgate unlock. The lamps flash and the horn sounds flash and/or the horn may sound on interior lamps may come on and three times. the second press to indicate locking stay on for 20 seconds or until the has occurred. If enabled, the horn ignition is turned on. Press and hold 7 for more than three seconds to activate the panic alarm. The turn signal lamps flash GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Keys, Doors, and Windows 35 and the horn sounds repeatedly for Keyless Unlocking/Locking from Pressing the lock/unlock button will 30 seconds. The alarm turns off the Driver Door cause all doors to lock if any of the when the ignition is turned on or 7 When the doors are locked and the following occur: is pressed again. The ignition must RKE transmitter is within 1 m (3 ft) . It has been more than be off for the panic alarm to work. of the door handle, pressing the five seconds since the first lock/ lock/unlock button on the driver door Keyless Access Operation unlock button press. handle will unlock the driver door. . Two lock/unlock button presses The Keyless Access system allows If the lock/unlock button is pressed were used to unlock all doors. for doors and the tailgate to be again within five seconds, all accessed without pressing the RKE passenger doors and the tailgate . Any vehicle door has been transmitter button. The RKE will unlock. opened and all doors are now transmitter must be within 1 m (3 ft) closed. of the tailgate or door being opened. Keyless Unlocking/Locking from If the vehicle has this feature, there the Passenger Doors will be a button on the outside door handles. When the doors are locked and the RKE transmitter is within 1 m (3 ft) Keyless Access can be of the door handle, pressing the programmed to unlock all doors on lock/unlock button on a passenger the first lock/unlock press from the door handle will unlock all doors. driver door. See Vehicle 0 Pressing the lock/unlock button will Personalization 167. cause all doors to lock if any of the If equipped with memory seats, RKE following occur: transmitters 1 and 2 are linked to Driver Side Shown, Passenger . The lock/unlock button was used seating positions of memory 1 or 2. to unlock all doors. See Memory Seats 0 73. Side Similar . Any vehicle door has been opened and all doors are now closed. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

36 Keys, Doors, and Windows Disable/Enable Keyless Unlocking Passive Locking three chimes are heard. Passive of Exterior Door Handles and This feature will lock the vehicle locking will then remain disabled Tailgate several seconds after all doors are until Q on the interior door is If equipped, keyless unlocking of the closed, if the vehicle is off and at pressed, or until the vehicle is exterior door handles and tailgate least one RKE transmitter has been turned on. can be disabled and enabled. removed from the interior, or none Remote Left in Vehicle Alert Disabling Keyless Unlocking: remain in the interior. When the vehicle is turned off and With the vehicle off, press and hold If other electronic devices interfere an RKE transmitter is left in the Q and K on the RKE transmitter at with the RKE transmitter signal, the vehicle, the horn will chirp three the same time for approximately vehicle may not detect the RKE times after all doors are closed. To three seconds. The turn signal transmitter inside the vehicle. turn on or off see Vehicle lamps will flash four times quickly to If passive locking is enabled, the Personalization 0 167. indicate access is disabled. Using doors may lock with the RKE any exterior handle to unlock the transmitter inside the vehicle. Do Remote No Longer in Vehicle Alert doors or open the tailgate will cause not leave the RKE transmitter in an If the vehicle is on with a door open the turn signal lamps to flash four unattended vehicle. and then all doors are closed, the times quickly, indicating access is To customize the doors to vehicle will check for RKE disabled. If disabled, disarm the automatically lock when exiting the transmitters inside. If an RKE alarm system before starting the vehicle, see “Remote Lock, Unlock, transmitter is not detected, the vehicle. Start” under Vehicle Personalization Driver Information Center (DIC) will 0 Enabling Keyless Unlocking: 167. display NO REMOTE DETECTED and the horn will chirp three times. With the vehicle off, press and hold Temporary Disable of Passive This occurs only once each time the Q and K on the RKE transmitter at Locking vehicle is driven. To turn on or off the same time for approximately Temporarily disable passive locking see Vehicle Personalization 0 167. three seconds. The turn signal by pressing and holding K on the lamps will flash twice quickly to interior door switch with a door open indicate access is enabled. for at least four seconds, or until GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Keys, Doors, and Windows 37 Key Access To program, the vehicle must be off To access a vehicle with a dead and all transmitters, both currently transmitter battery, see Door Locks recognized and new, must be 0 44. with you. 1. Remove the key from a Programming Transmitters to recognized transmitter. the Vehicle 2. Place the two recognized Only RKE transmitters programmed transmitters in the cupholder or to the vehicle will work. If a on the passenger seat. transmitter is lost or stolen, a replacement can be purchased and 3. Insert the vehicle key into the programmed through your dealer. key lock cylinder on the driver The vehicle can be reprogrammed door handle. Then turn the key Transmitter Pocket without Bucket so that lost or stolen transmitters no counterclockwise, to the unlock Seats longer work. Each vehicle can have position, five times within up to eight transmitters matched 10 seconds. to it. The DIC displays READY FOR REMOTE#3, 4, 5 ETC. Programming with Recognized Transmitters A new transmitter can be programmed to the vehicle when there are two recognized transmitters. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

38 Keys, Doors, and Windows When all additional transmitters The DIC displays REMOTE are programmed, press and LEARN PENDING, hold ENGINE START/STOP for PLEASE WAIT. approximately 12 seconds to 3. Wait for 10 minutes until the exit programming mode. DIC displays PRESS ENGINE 7. Return the key back into the START BUTTON TO LEARN, transmitter. then press ENGINE START/STOP. Programming without Recognized Transmitters The DIC will again display REMOTE LEARN PENDING, If two currently recognized PLEASE WAIT. transmitters are not available, follow Transmitter Pocket with Bucket this procedure to program up to 4. Repeat Step 3 two additional Seats eight transmitters. This feature is times. After the third time all not available in Canada. This previously known transmitters 4. Place the new transmitter in procedure will take approximately will no longer work with the the transmitter pocket/insert. 30 minutes to complete. The vehicle vehicle. Remaining transmitters 5. Press ENGINE START/STOP. must be off and all transmitters to can be relearned during the When the transmitter is be programmed must be with you. next steps. learned, the DIC display will 1. Remove the vehicle key from The DIC should now display show that it is ready to program the transmitter. READY FOR REMOTE # 1. the next transmitter. 2. Insert the vehicle key into the 6. Remove the transmitter from key lock cylinder on the driver the transmitter pocket and door handle; then turn the key press K or Q on the counterclockwise, to the unlock transmitter. position, five times within To program additional 10 seconds. transmitters, repeat Steps 4–6. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Keys, Doors, and Windows 39 When all additional transmitters are programmed, press and hold ENGINE START/STOP for approximately 12 seconds to exit programming mode. 8. Return the key back into the transmitter. Starting the Vehicle with a Low Transmitter Battery If the transmitter battery is weak or if there is interference with the signal, Transmitter Pocket without Bucket Transmitter Pocket with Bucket the DIC may display NO REMOTE Seats Seats DETECTED or NO REMOTE KEY 5. Place the new transmitter in WAS DETECTED PLACE KEY IN the transmitter pocket/insert. TRANSMITTER POCKET THEN START YOUR VEHICLE when 6. Press ENGINE START/STOP. starting the vehicle. When the transmitter is learned, the DIC display will show that it is ready to program the next transmitter. 7. Remove the transmitter from the transmitter pocket/insert and press K or Q on the transmitter. To program additional transmitters, repeat Steps 5–7. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

40 Keys, Doors, and Windows To start the vehicle: Caution

When replacing the battery, do not touch any of the circuitry on the transmitter. Static from your body could damage the transmitter.

To replace the battery: 1. Press the button on the RKE transmitter to remove the key. Transmitter Pocket with Bucket Never pull the key out without Transmitter Pocket without Bucket Seats pressing the button. Seats 1. Place the transmitter in the transmitter pocket/insert. 2. With the vehicle in P (Park) or N (Neutral) press the brake pedal and ENGINE START/STOP. Replace the transmitter battery as soon as possible. Battery Replacement Replace the battery in the transmitter soon if the DIC displays REPLACE BATTERY IN REMOTE KEY. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Keys, Doors, and Windows 41 2. Insert a flat, thin object in the Remote Keyless Entry least four seconds. The engine may center of the transmitter to be started from outside the vehicle separate and remove the back (RKE) System Operation using the RKE transmitter. See cover. (Key Access) Remote Vehicle Start 0 43. The RKE transmitter functions may Q : Press to lock all doors. work up to 60 m (197 ft) away from If enabled, the turn signal lamps the vehicle. may flash and/or the horn may Other conditions can affect the sound on the second press to performance of the transmitter. See indicate locking has occurred. Remote Keyless Entry (RKE) If enabled, the horn chirps when 0 Q System 33. is pressed again within three seconds. See Vehicle Personalization 0 167. Pressing Q arms the alarm system. See Vehicle Alarm System 0 54. 3. Lift the battery with a flat If equipped with remote mirror object. folding, pressing and holding Q for 4. Remove the battery. one second will fold the mirrors, if enabled. See Vehicle 5. Insert the new battery, positive Personalization 0 167. side toward the back cover. K Replace with a CR2032 or : Press once to unlock only the equivalent battery. driver door. If K is pressed again within three seconds, all remaining 6. Push together the transmitter. / : Press and release Q, then doors unlock. The interior lamps 7. Insert the key back into the immediately press and hold / until may come on and stay on for RKE transmitter. the turn signal lamps flash or for at 20 seconds or until the ignition is turned on. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

42 Keys, Doors, and Windows If enabled, the turn signal lamps 30 seconds. The alarm turns off flash twice to indicate unlocking has when the ignition is turned on or 7 Caution occurred. If enabled, the exterior is pressed again. The ignition must When replacing the battery, do lamps may turn on. See Vehicle be off for the panic alarm to work. Personalization 0 167. not touch any of the circuitry on the transmitter. Static from your K Programming Transmitters to Pressing on the RKE transmitter the Vehicle body could damage the disarms the alarm system. See transmitter. Vehicle Alarm System 0 54. Only RKE transmitters programmed to this vehicle will work. If a If equipped with remote mirror transmitter is lost or stolen, a To replace the battery: folding, pressing and holding K for replacement can be purchased and one second will unfold the mirrors, programmed through your dealer. if enabled. See Vehicle Each vehicle can have up to Personalization 0 167. eight transmitters programmed to it. K See your dealer for transmitter Press and hold to remotely open programming. the windows, if enabled. See Vehicle Personalization 0 167. Battery Replacement x : Press twice quickly to release Replace the battery in the the tailgate, if equipped. transmitter soon if the REPLACE 7 : Press and release to initiate the BATTERY IN REMOTE KEY vehicle locator. The turn signal displays in the Driver Information lamps flash and the horn sounds Center (DIC). three times. 1. Separate and remove the back cover of the transmitter with a Press and hold 7 for more than flat, thin object, such as a coin. three seconds to activate the panic alarm. The turn signal lamps flash and the horn sounds repeatedly for GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Keys, Doors, and Windows 43 Remote Vehicle Start . There is an emission control system malfunction and the lamp If equipped with the remote start is on. feature, the climate control system will come on when the vehicle is . The ignition is in any mode other started remotely, depending on the than off. outside temperature. . The hazard flashers are on. The rear defog and heated and . Two remote starts or a remote ventilated seats, if equipped, may start with an extension have also come on. been used. See Heated and Ventilated Front The vehicle is not in P (Park). Seats 0 75 and Vehicle . 0 The engine will turn off during a 2. Press and slide the battery Personalization 167. remote vehicle start if: down toward the pocket of the Laws in some communities may transmitter in the direction of restrict the use of remote starters. . The coolant temperature gets the key ring. Do not use a Check local regulations for any too high. metal object requirements on remote starting of . The oil pressure gets low. vehicles. 3. Remove the battery. The RKE transmitter range may be 4. Insert the new battery, positive Do not use remote start if the reduced while the vehicle is running. side facing up. Replace with a vehicle is low on fuel. The vehicle may run out of fuel. Other conditions can affect the CR2032 or equivalent battery. performance of the transmitter. See 5. Push together the transmitter The vehicle cannot be remote Remote Keyless Entry (RKE) back cover top side first, and started if: System 0 33. then the bottom toward the . The RKE transmitter is inside Starting the Engine Using Remote key ring. the vehicle. Start . The hood is not closed. 1. Press and release Q. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

44 Keys, Doors, and Windows 2. Immediately press and hold / The vehicle's ignition must be Warning (Continued) until the turn signal lamps flash turned on and then back off to use remote start again. or for at least four seconds. being thrown out of the When the vehicle starts, the Canceling a Remote Start vehicle in a crash is parking lamps will turn on. The To cancel a remote start, do one of increased if the doors are doors will be locked and the the following: not locked. So, all climate control system may passengers should wear come on. . Press and hold / until the seat belts properly and the parking lamps turn off. doors should be locked The engine will continue to run whenever the vehicle is for 15 minutes. After . Turn on the hazard warning driven. 30 seconds, repeat flashers. . Young children who get into Steps 1 and 2 for a 15-minute . Turn the ignition on and then off. time extension. unlocked vehicles may be unable to get out. A child Turn the ignition on to operate the Door Locks can be overcome by vehicle. extreme heat and can suffer Extending Engine Run Time { Warning permanent or even death from heat stroke. The engine run time can be Unlocked doors can be Always lock the vehicle extended by 15 minutes, for a total dangerous. whenever leaving it. of 30 minutes, if during the first 15 minutes Steps 1 and 2 are . Passengers, especially . Outsiders can easily enter repeated while the engine is still children, can easily open through an unlocked door running. An extension can be the doors and fall out of a when you slow down or stop requested 30 seconds after starting. moving vehicle. The doors the vehicle. Locking the can be unlocked and doors can help prevent this A maximum of two remote starts, opened while the vehicle is from happening. or a single start with an extension, moving. The chance of is allowed between ignition cycles. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Keys, Doors, and Windows 45 There are several ways to lock and correct key fully inserted. Remove Delayed Locking unlock the vehicle. the key and insert it again. If this If equipped, this feature delays the From outside: does not reset the lock, turn the key halfway around in the cylinder and locking of the doors until . Use the Remote Keyless Entry repeat the reset procedure. five seconds after all doors are (RKE) transmitter. closed. . Use Keyless Access, Power Door Locks Delayed locking can only be turned if equipped. on when the Open Door Anti-Lockout feature has been Use the key in the driver door or . turned off. the passenger door, if equipped. From inside, use the power door When Q is pressed on the power locks or the manual door locks. To door lock switch while the door is lock the door with the manual door open, a chime will sound three locks, push down on the manual times indicating delayed locking is lock knob. active. From inside, pull the door handle The doors will lock automatically once to unlock the door. Pull the five seconds after all doors are handle again to open the door. closed. If a door is reopened before that time, the five-second timer will 0 See Vehicle Alarm System 54. reset when all doors are closed Free-Turning Locks Q : Press to lock the doors. again. The door key lock cylinder turns K : Press to unlock the doors. Press Q on the door lock switch freely when either the wrong key is again or press Q on the RKE used, or the correct key is not fully transmitter to lock the doors inserted. The free-turning door lock immediately. feature prevents the lock from being forced open. To reset the lock, turn This feature can be programmed. it to the vertical position with the See Vehicle Personalization 0 167. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

46 Keys, Doors, and Windows Automatic Door Locks driver door open, all the doors will Safety Locks lock and only the driver door will The doors will lock automatically unlock. The rear door safety locks prevent when all doors are closed, the passengers from opening the rear ignition is on, and the vehicle is If the vehicle is off and locking is doors from inside the vehicle. shifted out of P (Park). requested while a door is open, when all doors are closed the If a vehicle door is unlocked, and vehicle will check for RKE then opened and closed, the doors transmitters inside. If an RKE will lock either when your foot is transmitter is detected and the removed from the brake or the number of RKE transmitters inside vehicle speed becomes faster than has not reduced, the driver door will 13 km/h (8 mph). unlock and the horn will chirp three To unlock the doors: times. . Press K on the power door lock Lockout Protection can be manually overridden with the driver door open switch. by pressing and holding Q on the . Shift the transmission into power door lock switch. P (Park). Open Door Anti-Lockout If equipped, the safety lock is on the Automatic door locking cannot be inside edge of the rear doors. To disabled. Automatic door unlocking If Open Door Anti-Lockout is turned use the safety lock: can be programmed. See Vehicle on and the vehicle is off, the driver Personalization 0 167. door is open, and locking is 1. Move the lever down to the requested, all the doors will lock and lock position. Lockout Protection the driver door will remain open. 2. Close the door. Press the button again to lock the 3. Do the same for the other If the ignition is on or in ACC/ driver door. The Open Door rear door. ACCESSORY and the power door Anti-Lockout feature can be turned lock switch is pressed with the on or off. See Vehicle Personalization 0 167. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Keys, Doors, and Windows 47 To open a rear door when the safety Doors After closing the tailgate, pull it back lock is on: to be sure it is latched securely. 1. Unlock the door by activating Tailgate Some tailgates have an electric the inside handle, by pressing latch. If the battery is disconnected the power door unlock switch, Manual Tailgate or has low voltage, the tailgate will or by using the Remote not open. The tailgate will resume Keyless Entry (RKE) { Warning operation when the battery is transmitter. reconnected or recharged. It is extremely dangerous to ride 2. Open the door from the Power Release Tailgate outside. on the tailgate, even when the vehicle is operated at low speeds. When the safety lock is enabled, People riding on the tailgate can { Warning adults and older children will not be easily lose their balance and fall able to open the rear door from the Make sure there is no one in the in response to vehicle inside. Cancel the safety locks to way of the power tailgate as it is maneuvers. Falling from a moving enable the doors to open from the opening and closing, and keep vehicle may result in serious inside. hands away from the tailgate injuries or death. Do not allow hinges when in use. You or others To cancel the safety lock: people to ride on the tailgate. Be could be injured if caught in the sure everyone in your vehicle is in 1. Unlock the door and open it path of the power tailgate or a seat and using a seat belt from the outside. tailgate hinges. properly. 2. Move the lever up to unlock. Do the same for the other door. Use the key to unlock the tailgate. Caution Open the tailgate by lifting up on its handle while pulling the To avoid damage to the tailgate, tailgate down. make sure the area behind the To shut the tailgate, firmly push it tailgate is clear before opening it. upward until it latches. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

48 Keys, Doors, and Windows In the case of a dead battery, the . Press the touch pad on the tailgate can be opened manually. tailgate handle after unlocking all Contact your dealer or Roadside doors. Use the top of the tailgate Assistance. to pull against if assistance is If equipped, to lock or unlock the required. If equipped with tailgate, use the RKE transmitter or Keyless Access, a locked the key. tailgate can be opened if the See Remote Keyless Entry (RKE) RKE transmitter is within System Operation (Keyless Access) 1 m (3 ft). 0 33 or Remote Keyless Entry To close the tailgate, firmly push it (RKE) System Operation (Key upward until it latches. Pull it back Access) 0 41. to be sure it is latched securely. The vehicle must be in P (Park). . Press 5 on the center stack. MultiPro Tailgate To open the tailgate: { Warning . Press x twice quickly on the RKE transmitter until the tailgate Make sure there is no one in the moves. way of the power tailgate as it is opening and closing, and keep hands away from the tailgate hinges when in use. You or others could be injured if caught in the path of the power tailgate or tailgate hinges. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Keys, Doors, and Windows 49 To open the primary tailgate: Caution

To avoid damage to the tailgate, make sure the area behind the tailgate is clear before opening it.

If equipped with this feature, the vehicle must be in P (Park).

. Press 5 on the center stack. . Press x twice quickly on the . Press the lower touch pad on RKE transmitter until the tailgate the tailgate handle after moves. unlocking all doors. Use the top See Remote Keyless Entry of the tailgate to pull against if (RKE) System Operation assistance is required. (Keyless Access) 0 33 or To close the primary tailgate, firmly Remote Keyless Entry (RKE) push it upward until it latches. Pull it System Operation (Key Access) back to be sure it is latched Switches in the inner tailgate 0 41. If equipped with Keyless securely. prevent the primary tailgate from Access, the tailgate can be being opened when the inner opened if the RKE transmitter is tailgate is not fully closed. within 1 m (3 ft). GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

50 Keys, Doors, and Windows Tailgate Step Caution

Do not open the inner tailgate { Warning with the primary tailgate open if To avoid personal injury, keep there is a hitch ball or trailer hands away from the hinges attached. This may damage the when operating the tailgate step. tailgate.

With the primary and inner tailgates To close the inner tailgate with the open, the tailgate step can be primary tailgate closed, firmly push lowered to access the pickup bed. or pull it upward until it latches. Pull To open the inner tailgate, press the it back to be sure it is latched Using the Step upper touch pad on the tailgate securely. handle after unlocking all doors. Pull To close the inner tailgate with the Caution the top of the tailgate to open. primary tailgate open: When using the tailgate as a step, . Hold the primary tailgate and the load rating is 170 kg (375 lb), firmly close the inner tailgate. which includes a person and . Raise the inner tailgate so it cargo. Overloading the tailgate meets the primary tailgate and step can cause damage to the close together at the same time. tailgate system. When using the tailgate step as a load stop, the load must be secured as the load could shift. See Cargo Tie-Downs 0 127. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Keys, Doors, and Windows 51 The assist handle helps with entering the pickup box. To use: 1. Lift up on the handle until it locks in the open position. 2. To return the assist handle, pull the release lever toward the ball end of the handle and push the handle back to the closed position. Applying Loads to Tailgates

. To lower the tailgate step, press Do not place a load on top of the Caution the button at the center of the step when using it as a load stop. step. Make sure it lowers to the Do not put ramp loads on the fully open position. Using the Assist Handle inner tailgate alone. Damage to . To close the tailgate step, lift it the inner tailgate may occur. firmly. Make sure that both side latches are engaged. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

52 Keys, Doors, and Windows Power Assist Steps If equipped, the power assist steps, when enabled, will extend when the door is opened. They will retract three seconds after the door is closed or immediately if the vehicle starts moving. Keep hands, children, pets, objects, and clothing clear of the power assist steps when in motion. The steps will reverse direction if Preferred Method Alternate Method there is an obstruction. If possible, When applying any load to the carefully remove the obstruction, tailgate, distribute the weight evenly then open and close the door on the across the width of the tailgate. This same side to complete the motion. applies to all tailgate types. If the obstruction is not cleared, the assist steps remain extended. . Use a load-distributing member (1). Slight movement of the steps while extended is normal. . Secure the ramp to the bumper (2). GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Keys, Doors, and Windows 53 Kick Switch Center Stack Switch . Press j again to return to normal operation. Enable/Disable To enable or disable the power assist steps, press and hold j for four seconds. A DIC message displays. Cleaning Clean the power assist steps regularly. For an automatic wash, extend the steps while in N (Neutral) using the center stack 1. Place the vehicle in P (Park) The power assist steps can be switch. The steps will stow when and unlock the doors. extended to the tire by pressing j. shifting into D (Drive). 2. Kick the switch to extend the When extending the steps with j, power assist step to the tire. A Driver Information Center the kick switch is disabled. The (DIC) message displays. vehicle must be in P (Park) or N (Neutral). 3. Kick the switch again to return to normal operation. To extend the steps: . Press j to extend both steps. A DIC message displays. . Press j again to extend to the tire. A DIC message displays. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

54 Keys, Doors, and Windows Vehicle Security Fast Flash : Vehicle is unsecured. the lights will flash to indicate A door or the hood is open. pre-alarm. If the vehicle is not This vehicle has theft-deterrent Slow Flash : Alarm system is started, or the door is not unlocked features; however, they do not make armed. by pressing K on the RKE the vehicle impossible to steal. transmitter during the 10-second Arming the Alarm System pre-alarm, the alarm will be Vehicle Alarm System 1. Turn off the vehicle. activated. 2. Lock the vehicle in one of The alarm will also be activated if a two ways: passenger door or the hood is opened without first disarming the . Use the RKE transmitter. system. When the alarm is . With a door open, press Q activated, the turn signals flash and on the interior of the door. the horn sounds for about 30 seconds. The alarm system will 3. After 30 seconds, the alarm then re-arm to monitor for the next system will arm and the unauthorized event. indicator light will begin to slowly flash. Pressing Q on the Disarming the Alarm System RKE transmitter a second time To disarm the alarm system or turn will bypass the 30-second off the alarm if it has been activated: The indicator light, on the delay and immediately arm the K instrument panel near the alarm system. . Press on the RKE transmitter. windshield, indicates the status of The vehicle alarm system will not . Start the vehicle. the system. arm if the doors are locked with To avoid setting off the alarm by Off : Alarm system is disarmed. the key. mistake: On Solid : Vehicle is secured If the driver door is opened without . Lock the vehicle after all during the delay to arm the system. first unlocking with the RKE occupants have exited. transmitter, the horn will chirp and GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Keys, Doors, and Windows 55 . Always unlock a door with the This vehicle has a passive the transmitter in the transmitter RKE transmitter. theft-deterrent system. pocket in the center console. See 0 Unlocking the driver door with The system does not have to be Keys 30. the key will not disarm the manually armed or disarmed. If the ignition modes will not change system or turn off the alarm. The vehicle is automatically with the other transmitter or in the transmitter pocket, your vehicle How to Detect a Tamper immobilized when the vehicle is turned off. needs service. If the ignition does Condition change modes, the first transmitter The system is automatically If K is pressed on the RKE may be faulty. See your dealer who disarmed when the ignition is turned can service the theft-deterrent transmitter and the horn chirps three from off to on. system and have a new RKE times, an alarm occurred previously transmitter programmed to the while the alarm system was armed. The security light, in the instrument cluster, comes on if there is a vehicle. If the alarm has been activated, a problem with arming or disarming It is possible for the immobilizer message will appear on the DIC. the theft-deterrent system. system to learn a new or Immobilizer When trying to start the vehicle, the replacement transmitter. Up to eight security light comes on briefly when transmitters can be programmed for See Radio Frequency Statement the ignition is turned on. the vehicle. 0 443. If the engine does not start and the Do not leave the transmitter or security light stays on, there is a device that disarms or deactivates Immobilizer Operation problem with the system. Turn the the vehicle theft system in the ignition off and try again. vehicle. If the vehicle will not change ignition When equipped with a key, if the modes (ACC/ACCESSORY, on, off), engine still does not start, and the and the RKE transmitter appears to key appears to be undamaged, try be undamaged, try another another ignition key. It may be transmitter. Or, you may try placing necessary to check the fuse. See Fuses and Circuit Breakers 0 350. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

56 Keys, Doors, and Windows If the engine still does not start with Exterior Mirrors Using hood-mounted air deflectors the other key, the vehicle needs and add-on convex mirror service. If the vehicle does start, the attachments could decrease mirror first key may be faulty. See your Convex Mirrors performance. dealer. It is possible for the immobilizer system to learn new or { Warning Power Mirrors replacement keys. Up to eight keys can be programmed for the vehicle. A convex mirror can make things, To program additional keys, see like other vehicles, look farther Keys 0 30. To program additional away than they really are. If you transmitters, see your dealer. Do not cut too sharply into the right lane, leave the key or device that disarms you could hit a vehicle on the or deactivates the vehicle theft right. Check the inside mirror or system in the vehicle. glance over your shoulder before See your dealer to get a new key changing lanes. blank cut exactly as the ignition key that operates the system. The passenger side mirror is convex shaped. A convex mirror's surface is curved so more can be seen from the driver seat. 1. Select } or | for the driver or passenger side mirror. The Manual Mirrors switch will illuminate. If equipped, adjust manual mirrors 2. Press the arrows on the control by moving the mirror up and down pad to move the mirror up, or left to right to see a little of the down, right, or left. side of the vehicle and to have a 3. Adjust each outside mirror so clear view behind the vehicle. that a little of the vehicle and the area behind it can be seen. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Keys, Doors, and Windows 57 The mirrors may be equipped with a Power Folding Resetting the Power Folding memory function that works with the Mirrors memory seats. See Memory Seats Reset the power folding mirrors if: 0 73. . The mirrors are accidentally There may be cargo lamps on the obstructed while folding. bottom of the mirrors. See Exterior Cargo Lamps 0 182. . The mirrors are accidentally manually folded/unfolded. Folding Mirrors . The mirrors will not stay in the unfolded position. Manual Folding . The mirrors vibrate at normal If equipped, push the mirror toward driving speeds. the vehicle to fold. Push the mirror outward to return to its original Manually fold both mirrors if they position. If equipped with power folding are out of sync. Fold and unfold the mirrors: mirrors three times using the mirror Manually fold the mirrors inward to controls to reset them to their prevent damage when going 1. Press g to fold the mirrors in normal position. A popping noise through an automatic car wash. to the folded position. may be heard. This sound is normal after a manual folding operation. 2. Press g again to fold the mirrors out to the driving Remote Folding Mirrors position. If equipped, press and hold Q on The mirrors may also include a the RKE transmitter for memory function that works with the approximately one second to memory seats. See Memory Seats remotely fold the exterior mirrors. 0 73. Press and hold K on the RKE transmitter for approximately one second to unfold. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

58 Keys, Doors, and Windows See Remote Keyless Entry (RKE) Side Blind Zone Alert Blind Spot Mirrors System Operation (Keyless Access) The vehicle may have Side Blind 0 33 or Remote Keyless Entry If equipped, there is a small convex Zone Alert. See Side Blind Zone mirror built into the upper and outer (RKE) System Operation (Key Alert (SBZA) 0 267. Access) 0 41. corner of the driver outside mirror. It can show objects that may be in This feature can be turned on or off. Heated Mirrors the vehicle's blind zone. See Vehicle Personalization 0 167. If equipped with heated mirrors: Task Lighting 1 REAR : Press to heat the If equipped, task lighting projects outside mirrors. light from the outside mirrors to the See Rear Window Defogger under sides of the vehicle. See Task “ ” Dual Automatic Climate Control Lighting 0 182. System 0 190. Advanced Trailering Vision System Side Cameras Automatic Dimming If equipped, the Advanced Trailering Mirror Vision System side cameras are on If equipped, the driver outside mirror the bottom of the outside mirrors. To automatically adjusts for the glare of locate for cleaning, see Surround “ the headlamps from behind. This Vision (360 Degrees) under ” feature comes on when the vehicle Assistance Systems for Parking or is started. Backing 0 254. Lane Change Alert (LCA) The vehicle may have LCA. See Lane Change Alert (LCA) 0 267. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Keys, Doors, and Windows 59 Driving with the Blind Spot 1. When the approaching vehicle mirror for a vehicle in the blind Mirror 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 edge of the mirror. adjacent lane. 2. As the vehicle gets closer, the image in the main mirror gets Reverse Tilt Mirrors larger and moves outboard. If equipped with memory seats, the 3. As the vehicle enters the blind passenger and/or driver mirror tilts zone, the image transitions to a preselected position when the from the main mirror to the vehicle is in R (Reverse). This blind spot mirror. allows the curb to be seen when parallel parking. 4. When the vehicle is in the blind zone, the image only appears The mirror(s) return to the original in the blind spot mirror. position when: 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 0 167. Actual Mirror View 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-1500-11698638) - 2019 - crc - 5/15/18

60 Keys, Doors, and Windows Interior Mirrors Rear Camera Mirror If equipped, this automatic dimming Interior Rearview Mirrors mirror provides a wide angle camera Adjust the rearview mirror for a clear view of the area behind the vehicle. view of the area behind your vehicle. Do not spray glass cleaner directly on the mirror. Use a soft towel dampened with water. Manual Rearview Mirror V If equipped, push the tab forward for Press to scroll through the daytime use and pull it rearward for adjustment options. nighttime use to avoid glare from Press t and u to adjust the the headlamps from behind. settings using the indicators on the mirror. The indicators will remain Automatic Dimming Pull the tab to turn on the display. visible for five seconds after the last Rearview Mirror Push the tab to turn it off. When off button activation, and the settings the mirror is automatic dimming. will remain saved. If equipped, the mirror will Adjust the mirror for a clear view of automatically reduce the glare of the the area behind the vehicle while headlamps from behind. The the display is off. dimming feature comes on each time the vehicle is started. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Keys, Doors, and Windows 61 The adjustment options are: { Warning

The Rear Camera Mirror (RCM) has a limited view. Portions of the road, vehicles, and other objects may not be seen. Do not drive or park the vehicle using only this camera. Objects may appear closer than they are. Check the outside mirrors or glance over your shoulder when making lane changes or merging. Failure to . Tilt use proper care may result in injury, death, or vehicle damage. . Brightness

. Zoom GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

62 Keys, Doors, and Windows Troubleshooting . Dirt, snow, or other debris blocks Windows the camera lens. Clean the lens with a soft damp cloth. { Warning . The camera’s mounting on the vehicle has been damaged, and/ Never leave a child, a helpless or the position or the mounting adult, or a pet alone in a vehicle, angle of the camera has especially with the windows changed. closed in warm or hot weather. They can be overcome by the extreme heat and suffer permanent injuries or even death from heat stroke.

See your dealer for service if a blue screen and 3 are displayed in the mirror, and the display shuts off. Also, push the tab as indicated to return to the automatic dimming mode. The Rear Camera Mirror may not work properly or display a clear image if: . There is glare from the sun or headlamps. This may obstruct objects from view. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Keys, Doors, and Windows 63 The vehicle aerodynamics are Window Lockout designed to improve fuel economy performance. This may result in a pulsing sound when either rear window is down and the front windows are up. To reduce the sound, open either a front window or the sunroof, if equipped. Manual Windows If equipped, turn the hand crank on each door to manually raise or lower the manual windows. The power windows work when the ignition is on, in ACC/ACCESSORY, With Power Folding Mirrors, Power Windows or when Retained Accessory Power Without Similar (RAP) is active. See Retained Accessory Power (RAP) 0 225. This feature stops the rear door { Warning passenger window switches from Using the window switch, press to working except from the driver Children could be seriously open or pull to close the window. position. injured or killed if caught in the The windows may be temporarily Press 2 to engage the rear path of a closing window. Never disabled if they are used repeatedly leave the Remote Keyless Entry within a short time. window lockout feature. The (RKE) transmitter or keys in a indicator light is on when engaged. vehicle with children. When there Press 2 again to disengage. are children in the rear seat, use the window lockout button to prevent operation of the windows. See Keys 0 30. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

64 Keys, Doors, and Windows Windows Express Movement Extreme cold or ice could cause the Programming the Power window to auto-reverse. The All windows can be opened without Windows window will operate normally after holding the window switch. Press the object or condition is removed. Programming may be necessary if the switch down fully and quickly the vehicle battery has been release to express open the Automatic Reversal System disconnected or discharged. If the window. Override window is unable to express-up, If equipped, pull the window switch program each express-close up fully and quickly release to { Warning window: express close the window. 1. Close all doors. If automatic reversal system Briefly press or pull the window override is active, the window will 2. Turn the ignition on or to ACC/ switch in the same direction to stop ACCESSORY. not reverse automatically. You or that window’s express movement. others could be injured and the 3. Partially open the window to be Express Window Down window could be damaged. programmed. Then close it and continue to pull the switch L: If equipped, this button will be Before using automatic reversal briefly after the window has on the center stack. system override, make sure that all people and obstructions are fully closed. Press and hold L to open all clear of the window path. 4. Open the window and continue windows. Release L to stop all to press the switch briefly after movement. When the engine is on, override the the window has fully opened. Use the power window switches to automatic reversal system by pulling Remote Window Operation close each window. and holding the window switch if conditions prevent it from closing. If equipped, this feature allows the Window Automatic Reversal windows to be opened remotely. System If enabled in vehicle personalization, press and hold K on the RKE The express-close feature will transmitter. See Vehicle reverse window movement if it 0 comes in contact with an object. Personalization 167. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Keys, Doors, and Windows 65 Rear Windows The power sliding rear window Roof cannot be operated manually. Power Sliding Rear Window Sun Visors Sunroof

Pull the down to block glare. If equipped, detach the sun If equipped, the power sliding rear visor from the center mount to pivot window works when the ignition has to the side window or to extend 1. SLIDE Switch been turned on or to ACC/ along the rod. 2. TILT Switch ACCESSORY, or Retained If equipped, there is a lighted mirror If equipped, the sunroof operates Accessory Power (RAP) must be on the sun visor. Lift the cover when the ignition is on or in ACC/ active. See Retained Accessory to open. 0 ACCESSORY, or when Retained Power (RAP) 225. Accessory Power (RAP) is active. . Press the switch to open the See Retained Accessory Power window. (RAP) 0 225. . Pull the switch to close the window. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

66 Keys, Doors, and Windows Slide Switch The sunroof also has a sunshade, Dirt and debris may collect on the Express-Open/Express-Close : To which can be pulled forward to block sunroof seal or in the track. This express-open the sunroof, fully sun rays. The sunshade must be could cause an issue with sunroof opened and closed manually. operation or noise. It could also plug press and release I (1). Press and the water drainage system. release I (1) again to stop the Automatic Reversal System Periodically open the sunroof and movement. To express-close the The sunroof has an automatic remove any obstacles or loose sunroof, fully press and release K reversal system that is only active debris. Wipe the sunroof seal and when the sunroof is operated in roof sealing area using a clean (1). Press and release K (1) express-close mode. cloth, mild soap, and water. Do not again to stop the movement. remove grease from the sunroof If an object is in the path while Open/Close (Manual Mode) : To tracks. express-closing, the reversal system open the sunroof, press and hold I will detect an object, stop, and open If water is seen dripping into the (1). Release I (1) to stop the the sunroof again. water drainage system, this is normal. movement. Press and hold K (1) If frost or other conditions prevent to close the sunroof. Release K closing, override the feature by (1) to stop the movement. closing the sunroof in manual mode. To stop movement, release K (1). Tilt Switch Vent : From the closed position, press J (2) to vent the sunroof. Press K (2) to close the vent. When the sunroof is opened, an air deflector will automatically raise. The air deflector will retract when the sunroof is closed. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 67 Seat Belt Care ...... 85 Replacing LATCH System Seats and Replacing Seat Belt System Parts After a Crash ...... 117 Restraints Parts after a Crash ...... 85 Securing Child Restraints (With the Seat Belt in the Airbag System Rear Seat) ...... 117 Airbag System ...... 86 Securing Child Restraints (In Head Restraints Where Are the Airbags? ...... 88 Head Restraints ...... 68 the Center Front Seat) ...... 120 When Should an Airbag Securing Child Restraints (With Front Seats Inflate? ...... 89 the Seat Belt in the Front Seat Adjustment ...... 69 What Makes an Airbag Outboard Seat) ...... 121 Center Seat ...... 70 Inflate? ...... 90 Power Seat Adjustment ...... 70 How Does an Airbag Lumbar Adjustment ...... 71 Restrain? ...... 90 Reclining Seatbacks ...... 71 What Will You See after an Memory Seats ...... 73 Airbag Inflates? ...... 91 Heated and Ventilated Front Passenger Sensing System . . . 92 Seats ...... 75 Servicing the Airbag-Equipped Vehicle ...... 96 Rear Seats Adding Equipment to the Rear Seats ...... 77 Airbag-Equipped Vehicle . . . . . 97 Heated Rear Seats ...... 78 Airbag System Check ...... 98 Replacing Airbag System Parts Seat Belts after a Crash ...... 98 Seat Belts ...... 79 How to Wear Seat Belts Child Restraints Properly ...... 80 Older Children ...... 99 Lap-Shoulder Belt ...... 82 Infants and Young Children . . . 100 Seat Belt Use During Child Restraint Systems ...... 103 Pregnancy ...... 84 Where to Put the Restraint . . . 104 Seat Belt Extender ...... 84 Lower Anchors and Tethers for Safety System Check ...... 84 Children (LATCH System) . . . 106 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

68 Seats and Restraints Head Restraints

{ Warning

With head restraints that are not installed and adjusted properly, there is a greater chance that occupants will suffer a neck/ spinal injury in a crash. Do not drive until the head restraints for all occupants are installed and adjusted properly. Adjust the head restraint so that the To raise or lower the head restraint, top of the restraint is at the same press the button on the side of the Front Seats height as the top of the occupant's head restraint and pull up or push The vehicle's front seats have head. This position reduces the the head restraint down and release adjustable head restraints in the chance of a neck injury in a crash. the button. outboard seating positions. Pull and push on 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-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 69 Rear Head Restraints place. Push and pull on the head Front Seats restraint to make sure that it is The vehicle s rear seat has head ’ locked. restraints in the outboard seating Seat Adjustment positions that cannot be adjusted. If you are installing a child restraint in the rear seat, see Lower Anchors and Tethers for Children (LATCH { Warning 0 System) 106. You can lose control of the Center Headrest vehicle if you try to adjust a driver seat while the vehicle is moving. The vehicle’s rear seat may be equipped with a headrest in the Adjust the driver seat only when center seating position that cannot the vehicle is not moving. be adjusted. If you are installing a child restraint in the rear seat, see Lower Anchors and Tethers for Children (LATCH System) 0 106. The head restraint can be folded forward to allow for better visibility when the rear seat is unoccupied. To fold the head restraint, press the button on the side of the head restraint. When an occupant is in the seat, always return the head restraint to the upright position until it locks into 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-1500-11698638) - 2019 - crc - 5/15/18

70 Seats and Restraints 2. Slide the seat to the desired Power Seat Adjustment position and release the handle. 3. Try to move the seat back and forth to be sure it is locked in place. To adjust the seatback, see Reclining Seatbacks 0 71. To adjust the lumbar support, if equipped, see Lumbar Adjustment 0 71. Pull the strap on the side of the Center Seat center seatback to fold the center If equipped, the center front seatback. Do not use the center To adjust a power seat, if equipped: seatback doubles as an and seatback as a seating position when the seatback is folded down. . Move the seat forward or cupholder/storage area for the driver rearward by sliding the control and passenger when the center To raise the seatback, push the forward or rearward. front seat is not used. seatback rearward until it locks in the upright position. Push and pull . Raise or lower the front part of on the seatback to make sure it is the seat cushion by moving the locked. front of the control up or down. . Raise or lower the seat by moving the rear of the control up or down. To adjust the seatback, see Reclining Seatbacks 0 71. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 71 To adjust the lumbar support, see To adjust the lumbar support, Lumbar Adjustment 0 71. if equipped: Warning (Continued) Some vehicles are equipped with a . Press and hold the control For proper protection when the feature that activates a vibrating forward to increase or rearward vehicle is in motion, have the pulse alert in the driver seat to help to decrease upper and lower seatback upright. Then sit well the driver avoid crashes. See Driver lumbar support at the same time. back in the seat and wear the 0 Assistance Systems 253. seat belt properly. Reclining Seatbacks Lumbar Adjustment Power Lumbar { 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 could go into it, receiving neck or other injuries. Do not have a seatback reclined if The lap belt could go up over the vehicle is moving. your abdomen. The belt forces would be there, not at your pelvic bones. This could cause serious internal injuries. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

72 Seats and Restraints Manual Reclining Seatbacks The seatback will automatically Power Reclining Seatbacks fold forward. { Warning 2. To recline, move the seatback rearward to the desired If either seatback is not locked, it position, then release the lever could move forward in a sudden to lock the seatback in place. stop or crash. That could cause 3. Push and pull on the seatback injury to the person sitting there. to make sure it is locked. Always push and pull on the seatbacks to be sure they are To return the seatback to the upright locked. position: 1. Lift the lever fully without applying pressure to the seatback, and the seatback will return to the upright position. To recline a power seatback, 2. Push and pull on the seatback if equipped: to make sure it is locked. . Tilt the top of the control rearward to recline. . Tilt the top of the control forward to raise.

To adjust a manual seatback: 1. Lift the lever. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 73 Memory Seats 2, or B (Exit) until two beeps Memory adjustments may not be sound. To manually recall these available upon delivery or after service until steps in Saving positions, press and hold 1, 2, or B “ Memory Positions” section are until the saved position is reached. performed. Follow the instructions under “Saving Memory Positions.” Vehicle Personalization Settings The vehicle identifies the current . To have the Seat Entry Memory driver’s RKE transmitter number (1– movement begin when the 8). vehicle is started, select the See Remote Keyless Entry (RKE) Settings menu, then Vehicle, System Operation (Keyless Access) then Seating Position, and then 0 33 or Remote Keyless Entry Seat Entry Memory. Select On or (RKE) System Operation (Key Off. See “Seat Entry Memory” Access) 0 41. Only RKE later in this section. If equipped, memory seats allow two transmitters 1 and 2 can be used for . Seat Exit Memory movement drivers to save and recall their automatic memory recalls. A Driver begins when the ignition is unique seat positions for driving the Information Center (DIC) welcome turned off and the driver door is vehicle, and a shared exit position message indicating the transmitter opened, or when the ignition is for getting out of the vehicle. Other number may display for the first few turned off with the driver door feature positions may also be ignition cycles following a already opened, select the saved, such as power mirrors, transmitter change. For Seat Entry Settings menu, then Vehicle, if equipped. Memory positions are Memory to work properly, save the then Seating Position, and then linked to RKE transmitter 1 or 2 for positions to the memory button (1 or Seat Exit Memory. Select On or automatic memory recalls. 2) matching the RKE transmitter Off. See “Seat Exit Memory” Before saving, adjust all available number displayed in the DIC later in this section. memory feature positions. Turn the welcome message. Carry the linked . See Vehicle Personalization ignition on and then press and RKE transmitter when entering the 0 167 for additional setting release SET; a beep will sound. vehicle. information. Then immediately press and hold 1, GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

74 Seats and Restraints Identifying Driver Number 3. Press and release SET; a beep Manually Recalling Memory To identify the driver number: will sound. Positions 1. Start the vehicle with a different 4. Immediately press and hold the Press and hold 1, 2, or B to recall key or RKE transmitter. The 1 or 2 memory button matching the previously saved memory DIC should display the driver the above DIC welcome positions. message until two beeps number; 1 or 2. Turn the To stop Manual Memory Recall ignition off and remove the key sound. movement, release 1, 2, or B or or RKE transmitter from the If too much time passes vehicle. between releasing SET and press any of the following controls: 2. Start the vehicle with the initial pressing 1, the memory . Power seat position will not be saved and key or RKE transmitter. The . Memory SET DIC should display the other two beeps will not sound. Repeat Steps 3 and 4. . Power mirror, with the driver or driver number not shown in passenger outside mirror Step 1. 1 or 2 corresponds to the driver selected number. See “Identifying Driver Saving Memory Positions Number” previously in this Seat Entry Memory Read these instructions completely section. The vehicle identifies the number of before saving memory positions. 5. Repeat Steps 1–4 for a second the current driver’s RKE transmitter To save preferred driving positions driver using 1 or 2. (1–8). 1 and 2: B See Remote Keyless Entry (RKE) To save the position for and System Operation (Keyless Access) 1. Turn the ignition on or to ACC/ Seat Exit Memory, repeat Steps 1–4 0 ACCESSORY. 33 or Remote Keyless Entry using B. This saves the position (RKE) System Operation (Key A DIC welcome message may for getting out of the vehicle. Access) 0 41. If the RKE transmitter indicate driver number 1 or 2. is 1 or 2, and Seat Entry Memory is Save preferred memory feature programmed on in vehicle 2. Adjust all available memory positions to both 1 and 2 if you are features to the desired driving the only driver. personalization, the positions saved position. to the same memory button number GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 75 1 or 2 are automatically recalled driver’s RKE transmitter number (1 . Memory SET, 1, 2, or B when the ignition is turned on, or 2) may not match the memory or turned from off to ACC/ button number that positions were . Power mirror, with the driver or ACCESSORY. RKE transmitters 3–8 saved to. Try saving the position to passenger outside mirror will not provide automatic memory the other memory button or try the selected recalls. other RKE transmitter. Obstructions To turn Seat Entry Memory on or off, Seat Exit Memory If something has blocked the driver see "Vehicle Personalization Seat Exit Memory is not linked to an seat while recalling a memory Settings" previously in this section position, the recall may stop. 0 RKE transmitter. The position saved and Vehicle Personalization 167. Remove the obstruction and try the to B is used for all drivers. To turn recall again. If the memory position The shift lever must be in P (Park) Seat Exit Memory on or off, see to start Seat Entry Memory. Seat still does not recall, see your dealer "Vehicle Personalization Settings" for service. Entry Memory will complete if the previously in this section and vehicle is shifted out of P (Park) Vehicle Personalization 0 167. prior to reaching the saved memory Heated and Ventilated position. If turned on, the position saved to Front Seats B is automatically recalled when To stop Seat Entry Memory one of the following occurs: movement, turn the ignition off or { Warning press any of the following controls: . The vehicle is turned off and the driver door is opened within a . Power seat If temperature change or pain to short time. the skin cannot be felt, the seat . Memory SET, 1, 2, or B . The vehicle is turned off with the heater may cause burns. To . Power mirror, with the driver or driver door open. reduce the risk of burns, use care passenger outside mirror To stop Seat Exit Memory when using the seat heater, selected movement, press any of the especially for long periods of following memory controls: time. Do not place anything on If the saved memory seat position the seat that insulates against does not automatically recall or . Power seat recalls to the wrong positions, the (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

76 Seats and Restraints Press I or + to heat the driver or If equipped, the heated steering Warning (Continued) passenger seatback only. wheel will turn on automatically during a remote start if it is cold heat, such as a blanket, cushion, Press J or z to heat the driver or outside. The heated and ventilated cover, or similar item. This may passenger seat cushion and seat indicators and heated steering cause the seat heater to seatback. wheel indicator may not come on overheat. An overheated seat during this operation. heater may cause a burn or may Press C or { to ventilate the driver damage the seat. or passenger seat. The heated and ventilated seats and heated steering wheel may The indicator light on the button cancel when the vehicle is started. comes on when this feature is on. These features can be manually Press the button once for the selected after the ignition is highest setting. With each press of turned on. the button, the seat will change to The temperature performance of an the next lower setting, and then to unoccupied seat may be reduced. the off setting. The indicator lights This is normal. next to the buttons indicate three for the highest setting and one for the The heated or ventilated seats will lowest. If the heated seats are on not turn on during a remote start high for an extended time, their level unless they are enabled in vehicle may automatically be lowered. personalization. See Remote Vehicle Start 0 43 and Remote Start Heated and 0 Heated and Ventilated Seat Vehicle Personalization 167. Ventilated Seats Buttons Shown, Heated Seat Buttons Similar If equipped, the heated seats will turn on automatically during a If equipped, the buttons are on the remote start if it is cold outside and center stack. To operate, the engine the ventilated seats will turn on must be running. automatically if it is hot outside. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 77 Rear Seats the vehicle through the rear door and left the vehicle without the Rear Seat Reminder vehicle being shut off. If equipped, the message REAR The feature can be turned on or off. SEAT REMINDER LOOK IN REAR See Vehicle Personalization 0 167. SEAT displays under certain Folding the Rear Seat Cushion conditions indicating there may be an item or passenger in the rear Either side of the rear seat cushion seat. Check before exiting the can be folded up for added cargo vehicle. space. This feature will activate when a second row door is opened while Caution the vehicle is on or up to 10 minutes To fold the seat, slowly pull the seat before the vehicle is turned on. Folding a rear seat with the seat cushion up. There will be an alert when the belts still fastened may cause To return the seat to the normal vehicle is turned off. The alert does damage to the seat or the seat seating position, slowly pull the seat not directly detect objects in the rear belts. Always unbuckle the seat cushion down. seat; instead, under certain belts and return them to their conditions, it detects when a rear normal stowed position before { Warning door is opened and closed, folding a rear seat. indicating that there may be A seat belt that is improperly something in the rear seat. Make sure that nothing is on the routed, not properly attached, The feature is active only once each seat cushion. or twisted will not provide the time the vehicle is turned on and off, protection needed in a crash. The and will require reactivation by person wearing the belt could be opening and closing the second row seriously injured. After raising the doors. There may be an alert even rear seatback, always check to be when there is nothing in the rear (Continued) seat; for example, if a child entered GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

78 Seats and Restraints seats are on high, the level may Warning (Continued) automatically be lowered after approximately 30 minutes. sure that the seat belts are properly routed and attached, and are not twisted.

Heated Rear Seats

{ Warning

If you cannot feel temperature change or pain to the skin, the If available, the buttons are on the seat heater may cause burns. rear of the center console. To operate, the engine must be See the Warning under Heated running. and Ventilated Front Seats 0 75. Press M or L to heat the left or right outboard seat cushion. An indicator on the climate control display appears when this feature is on. This feature turns on at the highest setting. With each press of the button, the heated seat changes to the next lower setting, and then the off setting. Three lights indicate the highest setting, and one light indicates the lowest. If the heated GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 79 Seat Belts When riding in a vehicle, you Warning (Continued) as fast as the vehicle does. If the This section describes how to use vehicle stops suddenly, you keep seat belts properly, and some things passengers to ride in any area of going until something stops you. not to do. the vehicle that is not equipped It could be the windshield, the with seats and seat belts. instrument panel, or the seat belts! { Warning Always wear a seat belt, and When you wear a seat belt, you and check that all passenger(s) are the vehicle slow down together. Do not let anyone ride where a restrained properly too. There is more time to stop because seat belt cannot be worn properly. you stop over a longer distance and, In a crash, if you or your when worn properly, your strongest passenger(s) are not wearing This vehicle has indicators as a reminder to buckle the seat belts. bones take the forces from the seat seat belts, injuries can be much See Seat Belt Reminders 0 146. belts. That is why wearing seat belts worse than if you are wearing makes such good sense. seat belts. You can be seriously Why Seat Belts Work injured or killed by hitting things Questions and Answers About inside the vehicle harder or by Seat Belts being ejected from the vehicle. In Q: Will I be trapped in the vehicle addition, anyone who is not after a crash if I am wearing a buckled up can strike other seat belt? passengers in the vehicle. A: You could be — whether you are It is extremely dangerous to ride wearing a seat belt or not. Your in a cargo area, inside or outside chance of being conscious of a vehicle. In a collision, during and after a crash, so you passengers riding in these areas can unbuckle and get out, is are more likely to be seriously much greater if you are belted. injured or killed. Do not allow (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

80 Seats and Restraints Q: If my vehicle has airbags, why It is very important for all occupants this applies force to the strong should I have to wear seat to buckle up. Statistics show that pelvic bones and you would be belts? unbelted people are hurt more often less likely to slide under the lap A: Airbags are supplemental in crashes than those who are belt. If you slid under it, the belt systems only. They work with wearing seat belts. would apply force on your abdomen. This could cause seat belts — not instead of them. There are important things to know Whether or not an airbag is about wearing a seat belt properly. serious or even fatal injuries. provided, all occupants still have . Wear the shoulder belt over the to buckle up to get the most shoulder and across the chest. protection. These parts of the body are best Also, in nearly all states and in able to take belt restraining all Canadian provinces, the law forces. The shoulder belt locks if requires wearing seat belts. there is a sudden stop or crash. How to Wear Seat Belts { Warning Properly You can be seriously injured, Follow these rules for everyone's or even killed, by not wearing protection. your seat belt properly. There are additional things to know about seat belts and children, . Sit up straight and always keep including smaller children and your feet on the floor in front of infants. If a child will be riding in the you (if possible). vehicle, see Older Children 0 99 or . Always use the correct buckle Infants and Young Children 0 100. for your seating position. Review and follow the rules for . Wear the lap part of the belt low children in addition to the following and snug on the hips, just rules. touching the thighs. In a crash, GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 81

Always use the correct buckle for your seating position.

Never allow the lap or shoulder belt Never wear the shoulder belt under to become loose or twisted. both arms or behind your back. Never route the lap or shoulder belt over an armrest. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

82 Seats and Restraints Lap-Shoulder Belt The lap-shoulder belt may lock if you pull the belt across you All seating positions in the vehicle very quickly. If this happens, let have a lap-shoulder belt. the belt go back slightly to The following instructions explain unlock it. Then pull the belt how to wear a lap-shoulder belt across you more slowly. properly. If the shoulder portion of a 1. Adjust the seat, if the seat is passenger belt is pulled out all adjustable, so you can sit up the way, the child restraint straight. To see how, see locking feature may be “Seats” in the Index. engaged. If this happens, let the belt go back all the way and start again. If the webbing locks in the latch Engaging the child restraint plate before it reaches the locking feature in the front buckle, tilt the latch plate flat to outboard seating position may unlock. affect the passenger sensing system, if equipped. See Passenger Sensing System 0 92.

2. Pick up the latch plate and pull the belt across you. Do not let it get twisted. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 83 3. Push the latch plate into the Seat Belt Pretensioners buckle until it clicks. This vehicle has seat belt Pull up on the latch plate to pretensioners for front outboard make sure it is secure. If the occupants. Although the seat belt belt is not long enough, see pretensioners cannot be seen, they Seat Belt Extender 0 84. are part of the seat belt assembly. Position the release button on They can help tighten the seat belts the buckle so that the seat belt during the early stages of a could be quickly unbuckled if moderate to severe frontal, near necessary. frontal, or rear crash if the threshold conditions for pretensioner activation are met. Seat belt To unlatch the belt, push the button pretensioners can also help tighten on the buckle. The belt should the seat belts in a side crash or return to its stowed position. rollover event. Always stow the seat belt slowly. Pretensioners work only once. If the If the seat belt webbing returns pretensioners activate in a crash, quickly to the stowed position, the the pretensioners and probably retractor may lock and cannot be other parts of the vehicle's seat belt pulled out. If this happens, pull the system will need to be replaced. seat belt straight out firmly to unlock See Replacing Seat Belt System the webbing, and then release it. Parts after a Crash 0 85. If the webbing is still locked in the Do not sit on the outboard seat belt retractor, see your dealer. 4. To make the lap part tight, pull while entering or exiting the vehicle up on the shoulder belt. Before a door is closed, be sure the or at any time while sitting in the seat belt is out of the way. If a door seat. Sitting on the seat belt can is slammed against a seat belt, damage the webbing and hardware. damage can occur to both the seat belt and the vehicle. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

84 Seats and Restraints Rear Seat Belt Comfort Guides Seat Belt Extender Rear seat belt comfort guides may If the vehicle's seat belt will fasten provide added seat belt comfort for around you, you should use it. older children who have outgrown booster seats and for some adults. But if a seat belt is not long enough, When installed on a shoulder belt, your dealer will order you an the comfort guide positions the extender. When you go in to order it, shoulder belt away from the neck take the heaviest coat you will wear, and head. so the extender will be long enough for you. To help avoid personal Comfort guides are available injury, do not let someone else use through your dealer for the rear it, and use it only for the seat it is outboard seating positions. A pregnant woman should wear a made to fit. The extender has been Instructions are included with the designed for adults. Never use it for guide. lap-shoulder belt, and the lap portion should be worn as low as securing child restraints. For more possible, below the rounding, information on the proper use and fit Seat Belt Use During throughout the pregnancy. of seat belt extenders see the Pregnancy instruction sheet that comes with The best way to protect the fetus is the extender. Seat belts work for everyone, to protect the mother. When a seat including pregnant women. Like all belt is worn properly, it is more likely Safety System Check occupants, they are more likely to that the fetus will not be hurt in a be seriously injured if they do not crash. For pregnant women, as for Periodically check the seat belt wear seat belts. anyone, the key to making seat reminder, seat belts, buckles, latch belts effective is wearing them plates, retractors, shoulder belt properly. height adjusters (if equipped), and seat belt anchorages to make sure they are all in working order. Look for any other loose or damaged seat belt system parts that might keep a GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 85 seat belt system from performing Ensure there is not excessive dust Replacing Seat Belt properly. See your dealer to have it or debris in the mechanism. If dust repaired. Torn, frayed, or twisted or debris exists in the system please System Parts after a seat belts may not protect you in a see the dealer. Parts may need to Crash crash. Torn or frayed seat belts can be replaced to ensure proper rip apart under impact forces. If a functionality of the system. { Warning belt is torn or frayed, have it replaced immediately. If a belt is { Warning A crash can damage the seat belt twisted, it may be possible to system in the vehicle. A damaged untwist by reversing the latch plate Do not bleach or dye seat belt seat belt system may not properly on the webbing. If the twist cannot webbing. It may severely weaken protect the person using it, be corrected, ask your dealer to the webbing. In a crash, they resulting in serious injury or even fix it. might not be able to provide death in a crash. To help make Make sure the seat belt reminder adequate protection. Clean and sure the seat belt systems are light is working. See Seat Belt rinse seat belt webbing only with working properly after a crash, Reminders 0 146. mild soap and lukewarm water. have them inspected and any Keep seat belts clean and dry. See Allow the webbing to dry. necessary replacements made as Seat Belt Care 0 85. soon as possible.

Seat Belt Care After a minor crash, replacement of seat belts may not be necessary. Keep belts clean and dry. But the seat belt assemblies that Seat belts should be properly cared were used during any crash may for and maintained. have been stressed or damaged. Seat belt hardware should be kept See your dealer to have the seat dry and free of dust or debris. As belt assemblies inspected or necessary, exterior hard surfaces replaced. and seat belt webbing may be lightly cleaned with mild soap and water. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

86 Seats and Restraints New parts and repairs may be Airbag System For frontal airbags, the word necessary even if the seat belt AIRBAG is on the center of the system was not being used at the The vehicle has the following steering wheel for the driver and on time of the crash. airbags: the instrument panel for the front Have the seat belt pretensioners . A frontal airbag for the driver outboard passenger. checked if the vehicle has been in a . A frontal airbag for the front For seat-mounted side impact crash, or if the airbag readiness light outboard passenger airbags, the word AIRBAG is on the stays on after you start the vehicle side of the seatback closest to or while you are driving. See Airbag . A seat-mounted side impact the door. 0 airbag for the driver Readiness Light 147. For roof-rail airbags, the word . A seat-mounted side impact AIRBAG is on the ceiling or trim. airbag for the front outboard passenger Airbags are designed to supplement the protection provided by seat . A roof-rail airbag for the driver belts. Even though today's airbags and the passenger seated are also designed to help reduce directly behind the driver the risk of injury from the force of an . A roof-rail airbag for the front inflating bag, all airbags must inflate outboard passenger and the very quickly to do their job. passenger seated directly Here are the most important things behind the front outboard to know about the airbag system: passenger All vehicle airbags have the word { Warning AIRBAG on the trim or on a label near the deployment opening. You can be severely injured or killed in a crash if you are not wearing your seat belt, even with (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 87

Warning (Continued) Warning (Continued) { Warning

airbags. Airbags are designed to airbag when it inflates can be Children who are up against, work with seat belts, not replace seriously injured or killed. Do not or very close to, any airbag when them. Also, airbags are not sit unnecessarily close to any it inflates can be seriously injured designed to inflate in every crash. airbag, as you would be if sitting or killed. Always secure children In some crashes seat belts are on the edge of the seat or leaning properly in the vehicle. To read the only restraint. See When forward. Seat belts help keep you how, see Older Children 0 99 or Should an Airbag Inflate? 0 89. in position before and during a Infants and Young Children 0 Wearing your seat belt during a crash. Always wear a seat belt, 100. crash helps reduce your chance even with airbags. The driver of hitting things inside the vehicle should sit as far back as possible or being ejected from it. Airbags while still maintaining control of the vehicle. The seat belts and are “supplemental restraints” to the seat belts. Everyone in the the front outboard passenger vehicle should wear a seat belt airbags are most effective when properly, whether or not there is you are sitting well back and an airbag for that person. 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 { Warning windows in seating positions with The system checks the airbag electrical system for malfunctions. Because airbags inflate with great seat-mounted side impact airbags and/or roof-rail airbags. The light tells you if there is an force and faster than the blink of electrical problem. See Airbag an eye, anyone who is up Readiness Light 0 147. against, or very close to, any (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

88 Seats and Restraints Where Are the Airbags?

The front outboard passenger Driver Side Shown, Passenger frontal airbag is in the passenger Side Similar The driver frontal airbag is in the side instrument panel. The driver and front outboard center of the steering wheel. passenger seat-mounted side impact airbags are in the side of the seatbacks closest to the door. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 89 When Should an Airbag Warning (Continued) Inflate? that person causing severe injury This vehicle is equipped with or even death. The path of an airbags. See Airbag System 0 86. inflating airbag must be kept Airbags are designed to inflate if the clear. Do not put anything impact exceeds the specific airbag between an occupant and an system's deployment threshold. airbag, and do not attach or put Deployment thresholds are used to anything on the steering wheel predict how severe a crash is likely hub or on or near any other to be in time for the airbags to airbag covering. inflate and help restrain the Driver Side Crew Cab Shown, Do not use seat accessories that occupants. The vehicle has electronic sensors that help the Passenger Side Double and block the inflation path of a airbag system determine the Regular Cabs Similar seat-mounted side impact airbag. severity of the impact. Deployment The roof-rail airbags for the driver, Never secure anything to the roof thresholds can vary with specific front outboard passenger, and of a vehicle with roof-rail airbags vehicle design. second row outboard passengers by routing a rope or tie‐down Frontal airbags are designed to are in the ceiling above the side through any door or window inflate in moderate to severe frontal windows. opening. If you do, the path of an or near frontal crashes to help inflating roof-rail airbag will be reduce the potential for severe { Warning blocked. injuries, mainly to the driver's or front outboard passenger's head If something is between an and chest. occupant and an airbag, the airbag might not inflate properly Whether the frontal airbags will or or it might force the object into should inflate is not based primarily on how fast the vehicle is traveling. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

90 Seats and Restraints It depends on what is hit, the A seat-mounted side impact airbag airbag causing the bag to break out direction of the impact, and how is designed to inflate on the side of of the cover. The inflator, the airbag, quickly the vehicle slows down. the vehicle that is struck. and related hardware are all part of Frontal airbags may inflate at Roof-rail airbags are designed to the airbag module. different crash speeds depending on inflate in moderate to severe side For airbag locations, see Where Are whether the vehicle hits an object crashes depending on the location the Airbags? 0 88. straight on or at an angle, and of the impact. In addition, these whether the object is fixed or roof-rail airbags are designed to How Does an Airbag moving, rigid or deformable, narrow inflate during a rollover or in a Restrain? or wide. severe frontal impact. Roof-rail In moderate to severe frontal or Frontal airbags are not intended to airbags are not designed to inflate in near frontal collisions, even belted inflate during vehicle rollovers, rear rear impacts. Both roof-rail airbags occupants can contact the steering impacts, or many side impacts. will inflate when either side of the vehicle is struck or if the sensing wheel or the instrument panel. In In addition, the vehicle has system predicts that the vehicle is moderate to severe side collisions, advanced technology frontal about to roll over on its side, or in a even belted occupants can contact airbags. Advanced technology severe frontal impact. the inside of the vehicle. frontal airbags adjust the restraint Airbags supplement the protection according to crash severity. In any particular crash, no one can say whether an airbag should have provided by seat belts by Seat-mounted side impact airbags inflated simply because of the distributing the force of the impact are designed to inflate in moderate vehicle damage or repair costs. more evenly over the to severe side crashes depending occupant's body. on the location of the impact. What Makes an Airbag Rollover capable roof-rail airbags Seat-mounted side impact airbags are designed to help contain the are not designed to inflate in frontal Inflate? head and chest of occupants in the impacts, near frontal impacts, In a deployment event, the sensing outboard seating positions in the rollovers, or rear impacts. system sends an electrical signal first and second rows. The rollover triggering a release of gas from the capable roof-rail airbags are inflator. Gas from the inflator fills the designed to help reduce the risk of GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 91 full or partial ejection in rollover be some smoke and dust coming The vehicle has a feature that may events, although no system can from the vents in the deflated automatically unlock the doors, turn prevent all such ejections. airbags. Airbag inflation does not on the interior lamps and hazard But airbags would not help in many prevent the driver from seeing out of warning flashers, and shut off the types of collisions, primarily the windshield or being able to steer fuel system after the airbags inflate. because the occupant's motion is the vehicle, nor does it prevent The feature may also activate, not toward those airbags. See When people from leaving the vehicle. without airbag inflation, after an Should an Airbag Inflate? 0 89. event that exceeds a predetermined { Warning threshold. After turning the ignition Airbags should never be regarded off and then on again, the fuel as anything more than a supplement When an airbag inflates, there system will return to normal to seat belts. may be dust in the air. This dust operation; the doors can be locked, could cause breathing problems the interior lamps can be turned off, What Will You See after for people with a history of and the hazard warning flashers can an Airbag Inflates? asthma or other breathing trouble. be turned off using the controls for To avoid this, everyone in the those features. If any of these After frontal and seat-mounted side vehicle should get out as soon as systems are damaged in the crash impact airbags inflate, they quickly they may not operate as normal. deflate, so quickly that some people it is safe to do so. If you have breathing problems but cannot may not even realize the airbags { Warning inflated. Roof-rail airbags may still get out of the vehicle after an airbag inflates, then get fresh air be at least partially inflated for some A crash severe enough to inflate by opening a window or a door. time after they inflate. Some the airbags may have also If you experience breathing components of the airbag module damaged important functions in problems following an airbag may be hot for several minutes. For the vehicle, such as the fuel location of the airbags, see Where deployment, you should seek system, brake and steering Are the Airbags? 0 88. medical attention. systems, etc. Even if the vehicle The parts of the airbag that come appears to be drivable after a into contact with you may be warm, (Continued) but not too hot to touch. There may GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

92 Seats and Restraints . The vehicle has a crash sensing Warning (Continued) and diagnostic module which records information after a moderate crash, there may be crash. concealed damage that could See Vehicle Data Recording and make it difficult to safely operate Privacy 0 445 and Event Data the vehicle. 0 Recorders 445. United States Use caution if you should attempt . Let only qualified technicians to restart the engine after a crash work on the airbag systems. has occurred. Improper service can mean that an airbag system will not work In many crashes severe enough to properly. See your dealer for inflate the airbag, are service. broken by vehicle deformation. Canada Additional windshield breakage may Passenger Sensing also occur from the front outboard System The words ON and OFF, or the passenger airbag. symbols for on and off, will be The vehicle has a passenger visible during the system check. . Airbags are designed to inflate sensing system for the front When the system check is only once. After an airbag outboard passenger position. The complete, either the word ON or inflates, you will need some new passenger airbag status indicator OFF, or the symbol for on or off, will parts for the airbag system. will light on the overhead console be visible. See Passenger Airbag If you do not get them, the when the vehicle is started. Status Indicator 0 148. airbag system will not be there to help protect you in another The passenger sensing system crash. A new system will include turns off the front outboard airbag modules and possibly passenger frontal airbag under other parts. The service manual certain conditions. No other airbag for the vehicle covers the need is affected by the passenger to replace other parts. sensing system. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 93 The passenger sensing system works with sensors that are part of Warning (Continued) Warning (Continued) the front outboard passenger seat and seat belt. The sensors are airbag inflates. This is because secure child restraints in the rear designed to detect the presence of the back of the rear-facing child seat. Consider using another a properly seated occupant and restraint would be very close to vehicle to transport the child determine if the front outboard the inflating airbag. A child in a when a rear seat is not available. passenger frontal airbag should be forward-facing child restraint can allowed to inflate or not. be seriously injured or killed if the If the vehicle does not have a rear passenger frontal airbag inflates According to accident statistics, seat that will accommodate a and the passenger seat is in a children are safer when properly rear-facing child restraint, a secured in a rear seat in the correct forward position. rear-facing child restraint should not child restraint for their weight Even if the passenger sensing be installed in the vehicle, even if and size. system has turned off the the airbag is off. Whenever possible, children aged passenger frontal airbag, no The passenger sensing system is 12 and under should be secured in system is fail-safe. No one can designed to turn off the front a rear seating position. guarantee that an airbag will not outboard passenger frontal airbag if: deploy under some unusual Never put a rear-facing child seat in . The front outboard passenger circumstance, even though the the front. This is because the risk to seat is unoccupied. airbag is turned off. the rear-facing child is so great, . The system determines an infant if the airbag inflates. Never put a rear-facing child is present in a child restraint. restraint in the front seat, even if the airbag is off. If securing a . A front outboard passenger { Warning takes his/her weight off of the forward-facing child restraint in seat for a period of time. A child in a rear-facing child the front outboard passenger restraint can be seriously injured seat, always move the seat as far . There is a critical problem with or killed if the passenger frontal back as it will go. It is better to the airbag system or the passenger sensing system. (Continued) (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

94 Seats and Restraints When the passenger sensing wear a seat belt properly — whether 2. Remove the child restraint from system has turned off the front or not there is an airbag for that the vehicle. outboard passenger frontal airbag, person. 3. Remove any additional items the OFF indicator will light and stay from the seat such as blankets, lit as a reminder that the airbag is { Warning cushions, seat covers, seat off. See Passenger Airbag Status heaters, or seat massagers. Indicator 0 148. If the airbag readiness light ever 4. Reinstall the child restraint The passenger sensing system is comes on and stays on, it means that something may be wrong following the directions designed to turn on the front provided by the child restraint outboard passenger frontal airbag with the airbag system. To help avoid injury to yourself or others, manufacturer and refer to anytime the system senses that a Securing Child Restraints (With have the vehicle serviced right person of adult size is sitting the Seat Belt in the Front properly in the front outboard away. See Airbag Readiness 0 0 Outboard Seat) 121 or passenger seat. Light 147 for more information, Securing Child Restraints (In When the passenger sensing including important safety the Center Front Seat) 0 120 or system has allowed the airbag to be information. Securing Child Restraints (With enabled, the ON indicator will light the Seat Belt in the Rear Seat) and stay lit as a reminder that the If the On Indicator Is Lit for a 0 117. airbag is active. Child Restraint Make sure the seat belt For some children, including The passenger sensing system is retractor is locked by pulling children in child restraints, and for designed to turn off the front the shoulder belt all the way very small adults, the passenger outboard passenger frontal airbag if out of the retractor when sensing system may or may not turn the system determines that an infant installing the child restraint, off the front outboard passenger is present in a child restraint. If a even if the child restraint is frontal airbag, depending upon the child restraint has been installed equipped with a seat belt lock person's seating posture and body and the ON indicator is lit: off. When the retractor lock is build. Everyone in the vehicle who set, the belt can be tightened has outgrown child restraints should 1. Turn the vehicle off. but not pulled out of the retractor. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 95 5. If, after reinstalling the child If the Off Indicator Is Lit for an 2. Remove any additional material restraint and restarting the Adult-Sized Occupant from the seat, such as vehicle, the ON indicator is still blankets, cushions, seat lit, turn the vehicle off. Then covers, seat heaters, or seat slightly recline the vehicle massagers. seatback and adjust the seat 3. Place the seatback in the fully cushion, if adjustable, to make upright position. sure that the vehicle seatback is not pushing the child 4. Have the person sit upright in restraint into the seat cushion. the seat, centered on the seat cushion, with legs comfortably Also make sure the child extended. restraint is not trapped under the vehicle head restraint. 5. If the shoulder portion of the If this happens, adjust the head belt is pulled out all the way, restraint. See Head Restraints the child restraint locking 0 feature will be engaged. This 68. If a person of adult size is sitting in may unintentionally cause the the front outboard passenger seat, 6. Restart the vehicle. passenger sensing system to but the OFF indicator is lit, it could The passenger sensing system may turn the airbag off for some be because that person is not sitting or may not turn off the airbag for a adult-sized occupants. If this properly in the seat or that the child child in a child restraint depending happens, unbuckle the belt, let restraint locking feature is engaged. upon the child s size. It is better to the belt go back all the way, ’ Use the following steps to allow the secure child restraints in the rear and then buckle the belt again system to detect that person and seat. Consider using another without pulling the belt out all enable the front outboard passenger vehicle to transport the child when a the way. frontal airbag: rear seat is not available. Never put 6. Restart the vehicle and have 1. Turn the vehicle off. a rear-facing child restraint in the the person remain in this front seat, even if the ON indicator position for two to three minutes is not lit. after the ON indicator is lit. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

96 Seats and Restraints A thick layer of additional material, { Warning such as a blanket or cushion, Warning (Continued) or aftermarket equipment such as If the front outboard passenger seat covers, seat heaters, and seat seatback may interfere with the airbag is turned off for an massagers can affect how well the proper operation of the passenger adult-sized occupant, the airbag passenger sensing system sensing system. will not be able to inflate and help operates. We recommend that you protect that person in a crash, not use seat covers or other Servicing the resulting in an increased risk of aftermarket equipment except when serious injury or even death. An approved by GM for your specific Airbag-Equipped Vehicle adult-sized occupant should not vehicle. See Adding Equipment to Airbags affect how the vehicle 0 ride in the front outboard the Airbag-Equipped Vehicle 97 should be serviced. There are parts passenger seat, if the passenger for more information about of the airbag system in several airbag OFF indicator is lit. modifications that can affect how places around the vehicle. Your the system operates. dealer and the service manual have Additional Factors Affecting The ON indicator may be lit if an information about servicing the System Operation object, such as a briefcase, vehicle and the airbag system. To handbag, grocery bag, laptop, purchase a service manual, see Seat belts help keep the passenger or other electronic device, is put on Publication Ordering Information in position on the seat during an unoccupied seat. If this is not 0 442. vehicle maneuvers and braking, desired, remove the object from which helps the passenger sensing the seat. { Warning system maintain the passenger airbag status. See “Seat Belts” and { Warning For up to 10 seconds after the “Child Restraints” in the Index for vehicle is turned off and the additional information about the Stowing articles under the battery is disconnected, an airbag importance of proper restraint use. passenger seat or between the can still inflate during improper 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-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 97 . Front seats, including stitching, of the seat fabric, could also Warning (Continued) seams, or zippers interfere with the operation of the . Seat belts passenger sensing system. This are close to an airbag when it could either prevent proper inflates. Avoid yellow connectors. . Steering wheel, instrument deployment of the passenger They are probably part of the panel, overhead console, ceiling airbag(s) or prevent the passenger airbag system. Be sure to follow trim, or pillar garnish trim sensing system from properly proper service procedures, and . Inner door seals, including turning off the passenger airbag(s). make sure the person performing speakers See Passenger Sensing System work for you is qualified to do so. 0 92. Your dealer and the service manual have information about the location If the vehicle has rollover roof-rail Adding Equipment to the of the airbag modules and sensors, airbags, see Different Size Tires 0 Airbag-Equipped Vehicle sensing and diagnostic module, and and Wheels 379 for additional airbag wiring along with the proper important information. Adding accessories that change the replacement procedures. If a snow plow is added to the vehicle's frame, bumper system, vehicle, the airbags should still work height, front end, or side sheet In addition, the vehicle has a passenger sensing system for the properly. The airbag systems were metal, may keep the airbag system designed to work properly under a from working properly. front outboard passenger position, which includes sensors that are part wide range of conditions, including The operation of the airbag system of the passenger seat. The snow plowing with vehicles that can also be affected by changing, passenger sensing system may not have the optional snow plow prep including improperly repairing or operate properly if the original seat package (RPO VYU). Do not replacing, any parts of the following: trim is replaced with non-GM change or defeat the snow plow's tripping mechanism. If you do, it . Airbag system, including airbag covers, upholstery, or trim; or with “ ” can damage the snow plow and the modules, front or side impact GM covers, upholstery, or trim vehicle, and may cause an airbag sensors, sensing and diagnostic designed for a different vehicle. Any deployment. module, or airbag wiring object, such as an aftermarket seat heater or a comfort-enhancing pad or device, installed under or on top GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

98 Seats and Restraints If the vehicle must be modified If an airbag inflates, you will need to because you have a disability and Caution (Continued) replace airbag system parts. See have questions about whether the your dealer for service. covering and/or airbag module modifications will affect the vehicle's If the airbag readiness light stays on airbag system, or if you have replaced. For the location of the airbags, see Where Are the after the vehicle is started or comes questions about whether the airbag on when you are driving, the airbag system will be affected if the vehicle Airbags? 0 88. See your dealer for service. system may not work properly. Have is modified for any other reason, call the vehicle serviced right away. See Customer Assistance. See 0 0 Airbag Readiness Light 147. Customer Assistance Offices 435. Replacing Airbag System Airbag System Check Parts after a Crash The airbag system does not need regularly scheduled maintenance or { Warning replacement. Make sure the airbag A crash can damage the airbag readiness light is working. See systems in the vehicle. Airbag Readiness Light 0 147. A damaged airbag system may not properly protect you and your Caution passenger(s) in a crash, resulting If an airbag covering is damaged, in serious injury or even death. To help make sure the airbag opened, or broken, the airbag systems are working properly may not work properly. Do not after a crash, have them open or break the airbag inspected and any necessary coverings. If there are any replacements made as soon as opened or broken airbag possible. coverings, have the airbag (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 99 Child Restraints . Sit all the way back on the seat. Q: What is the proper way to Do the knees bend at the seat wear seat belts? Older Children edge? If yes, continue. If no, A: An older child should wear a return to the booster seat. lap-shoulder belt and get the . Buckle the lap-shoulder belt. additional restraint a shoulder Does the shoulder belt rest on belt can provide. The shoulder the shoulder? If yes, continue. belt should not cross the face or If no, try using the rear seat belt neck. The lap belt should fit comfort guide, if available. See snugly below the hips, just “Rear Seat Belt Comfort Guides” touching the top of the thighs. under Lap-Shoulder Belt 0 82. This applies belt force to the If a comfort guide is not child's pelvic bones in a crash. available, or if the shoulder belt It should never be worn over the still does not rest on the abdomen, which could cause shoulder, then return to the severe or even fatal internal booster seat. injuries in a crash. . Does the lap belt fit low and Also see Rear Seat Belt Comfort Older children who have outgrown “ snug on the hips, touching the Guides under Lap-Shoulder Belt booster seats should wear the ” thighs? If yes, continue. If no, 0 82. vehicle’s seat belts. return to the booster seat. According to accident statistics, The manufacturer instructions that . Can proper seat belt fit be children are safer when properly come with the booster seat state the maintained for the length of the restrained in a rear seating position. weight and height limitations for that trip? If yes, continue. If no, booster. Use a booster seat with a In a crash, children who are not return to the booster seat. lap-shoulder belt until the child buckled up can strike other people passes the fit test below: who are buckled up, or can be thrown out of the vehicle. Older children need to use seat belts properly. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

100 Seats and Restraints

{ Warning { Warning

Never allow more than one child Never allow a child to wear the to wear the same seat belt. The seat belt with the shoulder belt seat belt cannot properly spread behind their back. A child can be the impact forces. In a crash, they seriously injured by not wearing can be crushed together and the lap-shoulder belt properly. In a seriously injured. A seat belt must crash, the child would not be be used by only one person at restrained by the shoulder belt. a time. The child could move too far forward increasing the chance of head and neck injury. The child might also slide under the lap Infants and Young belt. The belt force would then be Children applied right on the abdomen. That could cause serious or fatal Everyone in a vehicle needs protection! This includes infants and injuries. The shoulder belt should all other children. Neither the go over the shoulder and across distance traveled nor the age and the chest. size of the traveler changes the need, for everyone, to use safety restraints. In fact, the law in every state in the United States and in every Canadian province says children up to some age must be restrained while in a vehicle. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 101 appropriate child restraints. Neither { Warning the vehicle's seat belt system nor its airbag system is designed for them. Children can be seriously injured or strangled if a shoulder belt is Children who are not restrained wrapped around their neck. The properly can strike other people, shoulder belt can tighten but or can be thrown out of the vehicle. cannot be loosened if it is locked. The shoulder belt locks when it is { Warning pulled all the way out of the retractor. It unlocks when the Never hold an infant or a child shoulder belt is allowed to go all while riding in a vehicle. Due to the way back into the retractor, crash forces, an infant or a child but it cannot do this if it is will become so heavy it is not { Warning possible to hold it during a crash. wrapped around a child’s neck. If the shoulder belt is locked and For example, in a crash at only Children who are up against, 40 km/h (25 mph), a 5.5 kg (12 lb) tightened around a child’s neck, or very close to, any airbag when the only way to loosen the belt is infant will suddenly become a it inflates can be seriously injured to cut it. 110 kg (240 lb) force on a person's or killed. Never put a rear-facing arms. An infant or child should be child restraint in the front Never leave children unattended secured in an appropriate outboard seat. Secure a in a vehicle and never allow restraint. rear-facing child restraint in a rear children to play with the seat seat. It is also better to secure a belts. forward-facing child restraint in a rear seat. If you must secure a Every time infants and young forward-facing child restraint in children ride in vehicles, they should the front outboard seat, always have the protection provided by move the front passenger seat as far back as it will go. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

102 Seats and Restraints For each type of child restraint, there are many different models { Warning available. When purchasing a child restraint, be sure it is designed to be A young child's hip bones are still used in a motor vehicle. If it is, the so small that the vehicle's regular restraint will have a label saying that seat belt may not remain low on it meets federal motor vehicle safety the hip bones, as it should. standards. The restraint Instead, it may settle up around manufacturer's instructions that the child's abdomen. In a crash, come with the restraint state the the belt would apply force on a weight and height limitations for a body area that is unprotected by particular child restraint. In addition, any bony structure. This alone there are many kinds of restraints could cause serious or fatal Child restraints are devices used to available for children with special injuries. To reduce the risk of restrain, seat, or position children in needs. the vehicle and are sometimes serious or fatal injuries during a called child seats or car seats. crash, young children should { Warning always be secured in appropriate There are three basic types of child restraints. child restraints: To reduce the risk of neck and . Forward-facing child restraints head injury in a crash, infants and toddlers should be secured in a . Rear-facing child restraints rear-facing child restraint until age . Belt-positioning booster seats two, or until they reach the maximum height and weight limits The proper child restraint for your of their child restraint. child depends on their size, weight, and age, and also on whether the child restraint is compatible with the vehicle in which it will be used. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 103 Child Restraint Systems

Forward-Facing Child Restraint Booster Seats Rear-Facing Infant Restraint A forward-facing child restraint A belt-positioning booster seat is provides restraint for the child's used for children who have A rear-facing child restraint provides body with the harness. outgrown their forward-facing child restraint with the seating surface restraint. Boosters are designed to against the back of the infant. improve the fit of the vehicle's seat The harness system holds the infant belt system until the child is large in place and, in a crash, acts to enough for the vehicle seat belts to keep the infant positioned in the fit properly without a booster seat. restraint. See the seat belt fit test in Older Children 0 99. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

104 Seats and Restraints Securing an Add-On Child When securing an add-on child availability in Canada, check with Restraint in the Vehicle restraint, refer to the instructions Transport Canada or the Provincial that come with the restraint which Ministry of Transportation office. { Warning may be on the restraint itself or in a booklet, or both, and to this manual. Securing the Child Within the Child Restraint 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 { Warning copy from the manufacturer. the vehicle. Secure the child A child can be seriously injured or Keep in mind that an unsecured restraint properly in the vehicle killed in a crash if the child is not child restraint can move around in a using the vehicle’s seat belt or properly secured in the child collision or sudden stop and injure LATCH system, following the restraint. Secure the child instructions that came with that people in the vehicle. Be sure to properly secure any child restraint in properly following the instructions child restraint and the instructions that came with that child restraint. in this manual. the vehicle — even when no child is in it.

To help reduce the chance of injury, In some areas of the United States Where to Put the the child restraint must be secured and Canada, Certified Child Restraint Passenger Safety Technicians in the vehicle. Child restraints must According to accident statistics, be secured in vehicle seats by lap (CPSTs) are available to inspect and demonstrate how to correctly children and infants are safer when belts or the lap belt portion of a properly restrained in an appropriate lap-shoulder belt, or by the LATCH use and install child restraints. In the U.S., refer to the National child restraint secured in a rear system. See Lower Anchors and seating position. Tethers for Children (LATCH Highway Traffic Safety System) 0 106 for more information. Administration (NHTSA) website to Whenever possible, children aged Children can be endangered in a locate the nearest 12 and under should be secured in crash if the child restraint is not inspection station. For CPST a rear seating position. properly secured in the vehicle. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 105 Never put a rear-facing child If the vehicle does not have a rear restraint in the front. This is because Warning (Continued) seat that will accommodate a the risk to the rear-facing child is so rear-facing child restraint, a great if the airbag deploys. Secure rear-facing child restraints rear-facing child restraint should not in a rear seat, even if the airbag be installed in the vehicle, even if is off. If you secure a { Warning the airbag is off. forward-facing child restraint in When securing a child restraint with A child in a rear-facing child the front seat, always move the front passenger seat as far back the seat belts in a rear seat position, restraint can be seriously injured study the instructions that came with as it will go. It is better to secure or killed if the front passenger the child restraint to make sure it is the child restraint in a rear seat. airbag inflates. This is because compatible with this vehicle. the back of the rear-facing child See Passenger Sensing System Child restraints and booster seats restraint would be very close to 0 92 for additional information. vary considerably in size, and some the inflating airbag. A child in a may fit in certain seating positions forward-facing child restraint can better than others. be seriously injured or killed if the front passenger airbag inflates { Warning Depending on where you place the and the passenger seat is in a child restraint and the size of the A child in a child restraint in the forward position. child restraint, you may not be able center front seat can be badly to access adjacent seat belts or Even if the passenger sensing injured or killed by the frontal LATCH anchors for additional system has turned off the front airbags if they inflate. Never passengers or child restraints. passenger frontal airbag, no secure a child restraint in the Adjacent seating positions should system is fail-safe. No one can center front seat. It is always not be used if the child restraint guarantee that an airbag will not better to secure a child restraint in prevents access to or interferes with deploy under some unusual a rear seat. the routing of the seat belt. circumstance, even though it is turned off. Do not use child restraints in the (Continued) center front seat position. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

106 Seats and Restraints Wherever a child restraint is rear-facing and forward-facing child The LATCH anchorage system can installed, be sure to follow the seats can be properly installed be used until the combined weight instructions that came with the child using either the LATCH anchors or of the child plus the child restraint is restraint and secure the child the vehicle’s seat belts. Do not use 29.5 kg (65 lbs). Use the seat belt restraint properly. both the seat belts and the LATCH alone instead of the LATCH Keep in mind that an unsecured anchorage system to secure a anchorage system once the child restraint can move around in a rear-facing or forward-facing combined weight is more than collision or sudden stop and injure child seat. 29.5 kg (65 lbs). people in the vehicle. Be sure to Booster seats use the vehicle’s seat See Securing Child Restraints (With properly secure any child restraint in belts to secure the child and the the Seat Belt in the Front Outboard the vehicle — even when no child is booster seat. If the manufacturer Seat) 0 121 or Securing Child in it. recommends that the booster seat Restraints (In the Center Front Seat) be secured with the LATCH system, 0 120 or Securing Child Restraints Lower Anchors and this can be done as long as the (With the Seat Belt in the Rear Tethers for Children booster seat can be positioned Seat) 0 117. properly and there is no interference (LATCH System) Child restraints built after March with the proper positioning of the 2014 will be labeled with the The LATCH system secures a child lap-shoulder belt on the child. specific child weight up to which the restraint during driving or in a crash. Make sure to follow the instructions LATCH system can be used to LATCH attachments on the child that came with the child restraint, install the restraint. restraint are used to attach the child and also the instructions in this The following explains how to attach restraint to the anchors in the manual. vehicle. This system is designed to a child restraint with these make installation of a child restraint When installing a child restraint with attachments in the vehicle. easier. a top tether, you must also use Not all vehicle seating positions either the lower anchors or the seat In order to use the LATCH system in have lower anchors. In this case, belts to properly secure the child the seat belt must be used (with top your vehicle, you need a child restraint. A child restraint must restraint that has LATCH tether where available) to secure never be installed using only the top the child restraint. attachments. LATCH-compatible tether and anchor. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 107 See Securing Child Restraints (With Top Tether Anchor Some child restraints that have a the Seat Belt in the Front Outboard top tether are designed for use with Seat) 0 121 or Securing Child or without the top tether being Restraints (In the Center Front Seat) attached. Others require the top 0 120 or Securing Child Restraints tether always to be attached. In (With the Seat Belt in the Rear Canada, the law requires that Seat) 0 117. forward-facing child restraints have a top tether, and that the tether be Lower Anchors attached. Be sure to read and follow the instructions for your child restraint. Lower Anchor and Top Tether Anchor Locations

A top tether (3, 4) is used to secure the top of the child restraint to the vehicle. A top tether anchor is built into the vehicle. The top tether attachment hook (2) on the child restraint connects to the top tether anchor in the vehicle in order to reduce the forward movement and Lower anchors (1) are metal bars rotation of the child restraint during built into the vehicle. There are two driving or in a crash. lower anchors for each LATCH seating position that will The child restraint may have a single tether (3) or a dual tether (4). accommodate a child restraint with Regular Cab — Only lower attachments (2). Either will have a single attachment hook (2) to secure the top tether to the anchor. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

108 Seats and Restraints lower anchors has two labels near the crease between the seatback and the seat cushion.

For regular cab models, there are top tether anchor symbols to assist Regular Cab — Three-Passenger Double and Crew Cab Rear Seat you in locating the top tether Front Seat I : Seating positions with top anchors. I : Seating positions with tether anchors. Do not install a child restraint in the top tether anchors. H : Seating positions with two center seating position. See Securing Child Restraints (With Do not install a child restraint in the lower anchors. the Seat Belt in the Front Outboard center front seating position. Seat) 0 121 or Securing Child See Securing Child Restraints (With Restraints (In the Center Front Seat) the Seat Belt in the Front Outboard 0 120 or Securing Child Restraints Seat) 0 121 or Securing Child (With the Seat Belt in the Rear Restraints (In the Center Front Seat) Seat) 0 117 for more information. 0 120 or Securing Child Restraints (With the Seat Belt in the Rear 0 Seat) 117 for more information. To assist in locating the lower anchors on double and crew cab models, each seating position with GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 109

Regular Cab Driver Side Anchor and Loop Center Anchor and Loop (Double For regular cab models, the top (Double and Crew Cab) and Crew Cab) tether anchors are on the back panel behind the passenger seat. Be sure to use an anchor directly behind the seating position where the child restraint will be placed. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

110 Seats and Restraints that the top tether be attached, or if the instructions that come with the { Warning child restraint say that the top tether must be attached. Do not attach more than one child restraint to a single anchor, According to accident statistics, except for the center top tether children and infants are safer when anchors in the crew cab models. properly restrained in a child Attaching more than one child restraint system or infant restraint restraint to a single anchor could system secured in a rear seating cause the anchor or attachment position. See Where to Put the to come loose or even break Restraint 0 104 for additional information. during a crash. A child or others Passenger Side Loop (Double and could be injured. To reduce the Crew Cab) Securing a Child Restraint risk of serious or fatal injuries Designed for the LATCH during a crash, attach only one For double and crew cab models, System child restraint per anchor. the top tether is routed through loops (2) to the top tether anchors (1). Be sure to use the { Warning correct anchor for the seating A child could be seriously injured { Warning position where the child restraint will be placed. or killed in a crash if the child Children can be seriously injured restraint is not properly attached or strangled if a shoulder belt is Be sure to read the following to the vehicle using either the instructions to properly install a child wrapped around their neck. The LATCH anchors or the vehicle shoulder belt can tighten but restraint using these loops and seat belt. Follow the instructions anchors. cannot be loosened if it is locked. that came with the child restraint The shoulder belt locks when it is Do not secure a child restraint in a and the instructions in this pulled all the way out of the position without a top tether anchor manual. if a national or local law requires (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 111 See Securing Child Restraints Warning (Continued) Caution (Continued) (With the Seat Belt in the Front Outboard Seat) 0 121 or retractor. It unlocks when the damage these parts. If necessary, Securing Child Restraints (In shoulder belt is allowed to go all move buckled seat belts to avoid the Center Front Seat) 0 120 or the way back into the retractor, rubbing the LATCH attachments. Securing Child Restraints (With but it cannot do this if it is Do not fold the rear seat cushion the Seat Belt in the Rear Seat) wrapped around a child’s neck. when the seat is occupied. Do not 0 117. If the shoulder belt is locked and fold the empty rear seat with a If the child restraint tightened around a child s neck, ’ seat belt buckled. This could manufacturer recommends that the only way to loosen the belt is damage the seat belt or the seat. the top tether be attached, to cut it. Unbuckle and return the seat belt attach and tighten the top Buckle any unused seat belts to its stowed position, before tether to the top tether anchor, behind the child restraint so folding the seat. if your vehicle has one. Refer children cannot reach them. Pull to the child restraint the shoulder belt all the way out instructions and the following If you need to secure more than one steps: of the retractor to set the lock, child restraint in the rear seat, see and tighten the belt behind the Where to Put the Restraint 0 104. 1.1. Find the top tether child restraint after the child anchor. restraint has been installed. Regular Cab Models 1.2. Route, attach, and tighten 1. For models without a rear seat, the top tether according forward-facing child restraints to your child restraint should only be installed in the Caution instructions and the right front seating position with following instructions: Do not let the LATCH belts and a top tether. attachments rub against the vehicle’s seat belts. This may (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

112 Seats and Restraints and route the tether Double and Crew Cab Models under the head restraint 1. Attach and tighten the lower and in between the head attachments to the lower restraint posts. anchors. If the child restraint 2. Make sure the child restraint does not have lower top tether hook is completely attachments or the desired closed and secured to the top seating position does not have tether anchor. lower anchors, secure the child restraint with the top tether and If the position you are 3. Secure the child restraint in the right front seating position with the seat belts. Refer to the using has an adjustable child restraint manufacturer head restraint and you the vehicle belts. See Securing Child Restraints instructions and the are using a dual tether, instructions in this manual. route the tether around (With the Seat Belt in the Front 0 the head restraint. Outboard Seat) 121 or 1.1. Find the lower anchors Securing Child Restraints (In for the desired seating the Center Front Seat) 0 120 or position. Securing Child Restraints (With 1.2. Put the child restraint on the Seat Belt in the Rear Seat) the seat. 0 117. 1.3. Attach and tighten the 4. Before placing a child in the lower attachments on the child restraint, make sure it is child restraint to the lower securely held in place. To anchors. check, grasp the child restraint at the belt path and attempt to 2. For forward-facing child If the position you are move it side to side and back restraints, attach and tighten using has an adjustable and forth. There should be no the top tether to the top tether head restraint and you more than 2.5 cm (1 in) of anchor, if your vehicle has one. are using a single tether, movement for proper Follow the child restraint raise the head restraint installation. instructions and the vehicle GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 113 LATCH anchor weight limits described at the beginning of this section, and the following steps:

Rear Driver Side Position 2.1.2. For first time use, 2.1. For a top tether in the remove and rear driver side position: discard the rubber band from the top 2.1.1. Remove the driver Rear Driver Side Position tether loop (2). side head restraint and center 2.1.3. Route the top headrest. See tether (3) through “Head Restraint or the loop (2). Headrest Removal 2.1.4. Attach the top and Reinstallation” tether (3) to the later in this driver side of the section. center top tether metal anchor (1). 2.1.5. Make sure the child restraint top tether hook is GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

114 Seats and Restraints completely closed 2.3.2. Route the top and secured to the tether (3) through top tether anchor. the loop (2). 2.3.3. Attach the top tether (3) to the passenger side of the center top tether metal anchor (1). 2.3.4. Make sure the child restraint top tether hook is Rear Passenger Side Position completely closed 2.3. For a top tether in the and secured to the rear passenger side top tether anchor. Rear Passenger Side Position position: 2.3.1. Remove the passenger side head restraint and center headrest. See “Head Restraint or Headrest Removal and Reinstallation” later in this section. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 115 2.4.1. Remove the driver When the top tether is properly side head restraint tightened, the loop may bend. and center This is normal and will not headrest. See damage the vehicle. “Head Restraint or If child restraints are installed Headrest Removal in both outboard positions, both and Reinstallation” top tethers can be attached to later in this the center anchor. Top tethers section. can be attached for child 2.4.2. Route the top restraints in all three rear tether (1) through seating positions at the same the center loop (2). time, following the routing Rear Center Position 2.4.3. Attach the top instructions above. tether (1) to the 4. Before placing a child in the driver side top child restraint, make sure it is tether metal securely held in place. To anchor (3). check, grasp the child restraint 2.4.4. Make sure the at the LATCH path and attempt child restraint top to move it side to side and tether hook is back and forth. There should completely closed be no more than 2.5 cm (1 in) and secured to the of movement for proper top tether anchor. installation. 3. Tighten the top tether per the child restraint manufacturer's Rear Center Position instructions. 2.4. For a top tether in the rear center position: GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

116 Seats and Restraints Head Restraint or Headrest 3. When the child restraint is Removal and Reinstallation removed, reinstall the head restraint or headrest before the The second row outboard head seating position is used. restraints or center headrest can be removed if they interfere with the proper installation of the child { Warning restraint. With head restraints that are not To remove the second row head installed and adjusted properly, restraints or center headrest: there is a greater chance that occupants will suffer a neck/ spinal injury in a crash. Do not drive until the head restraints for 1. Insert the head restraint or all occupants are installed and headrest posts into the holes in adjusted properly. the top of the seatback. The notches on the posts must face To reinstall the head restraint or the driver side of the vehicle. headrest: 2. Push the head restraint or headrest down. 3. Try to move the head restraint or headrest to make sure that it is locked in place. 1. Press both buttons on the head restraint or headrest posts at the same time, and pull up on the head restraint or headrest. 2. Store the head restraint or headrest in a secure place. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 117 Replacing LATCH System Securing Child Restraints In Canada, the law requires that forward-facing child restraints have Parts After a Crash (With the Seat Belt in the a top tether, and that the tether be Rear Seat) attached. { Warning When securing a child restraint with If the child restraint or vehicle seat A crash can damage the LATCH the seat belts in a rear seat position, position does not have the LATCH system in the vehicle. A damaged study the instructions that came with system, you will be using the seat LATCH system may not properly the child restraint to make sure it is belt to secure the child restraint. Be compatible with this vehicle. sure to follow the instructions that secure the child restraint, came with the child restraint. 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 If more than one child restraint sure the LATCH system is Tethers for Children (LATCH needs to be installed in the rear 0 working properly after a crash, System) 106 for how and where to seat, be sure to read Where to Put 0 see your dealer to have the install the child restraint using the Restraint 104. LATCH. If a child restraint is secured system inspected and any Double Cab necessary replacements made as in the vehicle using a seat belt and it uses a top tether, see Lower soon as possible. 1. Remove the head restraint or Anchors and Tethers for Children headrest prior to installing a (LATCH System) 0 106 for top forward-facing child restraint in If the vehicle has the LATCH system tether anchor locations. an outboard rear seating and it was being used during a Do not secure a child seat in a position. See “Head Restraint crash, new LATCH system parts position without a top tether anchor or Headrest Removal and may be needed. if a national or local law requires Reinstallation” under Lower New parts and repairs may be that the top tether be anchored, or if Anchors and Tethers for necessary even if the LATCH the instructions that come with the Children (LATCH System) 0 system was not being used at the child restraint say that the top tether 106. time of the crash. must be anchored. 2. Put the child restraint on the seat. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

118 Seats and Restraints 3. Pick up the latch plate, and run the lap and shoulder portions of the vehicle's seat belt through or around the child restraint. The child restraint instructions will show you how.

5. Pull the shoulder belt all the 6. To tighten the belt, push down way out of the retractor to set on the child restraint, pull the the lock. When the retractor shoulder portion of the belt to lock is set, the belt can be tighten the lap portion of the tightened but not pulled out of belt, and feed the shoulder belt the retractor. back into the retractor. When installing a forward-facing child 4. Push the latch plate into the restraint, it may be helpful to buckle until it clicks. use your knee to push down on the child restraint as you Position the release button on tighten the belt. the buckle, away from the child restraint, so that the seat belt Try to pull the belt out of the could be quickly unbuckled if retractor to make sure the necessary. 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-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 119 7. For forward-facing child Headrest Removal and 3. Push the latch plate into the restraints, attach and tighten Reinstallation” under Lower Anchors buckle until it clicks. the top tether to the top tether and Tethers for Children (LATCH 0 Position the release button on anchor (loop). Refer to the child System) 106 for additional the buckle, away from the child restraint instructions, the information on installing the restraint, so that the seat belt vehicle LATCH anchor weight headrest properly. could be quickly unbuckled if limits, and instructions listed in necessary. Lower Anchors and Tethers for Crew Cab Children (LATCH System) 1. Put the child restraint on 0 106. 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 child at the seat belt path and restraint. The child restraint attempt to move it side to side instructions 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. 4. Pull the shoulder belt all the To remove the child restraint, way out of the retractor to set unbuckle the vehicle seat belt and the lock. When the retractor let it return to the stowed position. lock is set, the belt can be If the top tether is attached to a top tightened but not pulled out of tether anchor, disconnect it. the retractor. Reinstall the head restraint or headrest before the seating position is used. See “Head Restraint or GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

120 Seats and Restraints 6. If the child restraint has a top may be removed. See your dealer tether, follow the child restraint for assistance with removal, and manufacturer's instructions store the removed head restraint in regarding the use of the top a secure place. When the child tether. See Lower Anchors and restraint is removed, reinstall the Tethers for Children (LATCH head restraint before the seating System) 0 106 for more position is used. For reinstallation information on using the top instructions, see “Head Restraint or tether anchors. Headrest Removal and 7. Before placing a child in the Reinstallation” under Lower Anchors and Tethers for Children (LATCH child restraint, make sure it is 0 securely held in place. To System) 106. 5. To tighten the belt, push down check, grasp the child restraint on the child restraint, pull the at the seat belt path and Securing Child Restraints shoulder portion of the belt to attempt to move it side to side (In the 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 { Warning back into the retractor. When installed, there should be no installing a forward-facing child more than 2.5 cm (1 in) of A child in a child restraint in the restraint, it may be helpful to movement. 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 head restraint in place, the head restraint GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 121 Do not use child restraints in the center front seat position. { Warning Warning (Continued) Securing Child Restraints A child in a rear-facing child forward-facing child restraint in restraint can be seriously injured the front outboard passenger (With the Seat Belt in the or killed if the front outboard seat, always move the seat as far Front Outboard Seat) passenger frontal airbag inflates. back as it will go. It is better to This is because the back of the secure the child restraint in a This vehicle has airbags. A rear seat is a safer place to secure a rear-facing child restraint would rear seat. forward-facing child restraint. See be very close to the inflating See Passenger Sensing System Where to Put the Restraint 0 104. airbag. A child in a forward-facing 0 92 for additional information. child restraint can be seriously In addition, the vehicle has a injured or killed if the front passenger sensing system which is outboard passenger frontal airbag If the vehicle does not have a rear designed to turn off the front inflates and the passenger seat is seat that will accommodate a outboard passenger frontal airbag in a forward position. rear-facing child restraint, a under certain conditions. rear-facing child restraint should not See Passenger Sensing System Even if the passenger sensing be installed in the vehicle, even if 0 92 and Passenger Airbag Status system has turned off the front the airbag is off. Indicator 0 148 for more information, outboard passenger frontal If the child restraint uses a top including important safety airbag, no system is fail-safe. No information. tether, see Lower Anchors and one can guarantee that an airbag Tethers for Children (LATCH Never put a rear-facing child will not deploy under some System) 0 106 for top tether anchor restraint in the front. This is because unusual circumstance, even locations. the risk to the rear-facing child is so though it is turned off. great, if the airbag deploys. Do not secure a child seat in a Secure rear-facing child restraints position without a top tether anchor in a rear seat, even if the airbag if a national or local law requires is off. If you secure a that the top tether be anchored, or if (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

122 Seats and Restraints the instructions that come with the lit when you start the vehicle. child restraint say that the top tether See Passenger Airbag Status must be anchored. Indicator 0 148. In Canada, the law requires that 2. Put the child restraint on forward-facing child restraints have the seat. a top tether, and that the tether be 3. Pick up the latch plate, and run attached. the lap and shoulder portions When using the lap-shoulder belt to of the vehicle's seat belt secure the child restraint in this through or around the child position, follow the instructions that restraint. The child restraint came with the child restraint and the instructions will show you how. following instructions: 4. Push the latch plate into the 1. Move the seat as far back as it buckle until it clicks. will go before securing the forward-facing child restraint. Position the release button on Move the seat upward or the the buckle, away from the child seatback to an upright position, restraint, so that the seat belt if needed, to get a tight could be quickly unbuckled if installation of the child necessary. restraint. When the passenger sensing system has turned off the front outboard passenger frontal airbag, the OFF indicator on the passenger airbag status Tilt the latch plate to adjust the indicator should light and stay belt if needed. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Seats and Restraints 123 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) 0 106. 8. Before placing a child in the 5. Pull the shoulder belt all the 6. To tighten the belt, push down child restraint, make sure it is way out of the retractor to set on the child restraint, pull the securely held in place. To the lock. When the retractor shoulder portion of the belt to check, grasp the child restraint lock is set, the belt can be tighten the lap portion of the at the seat belt path and tightened but not pulled out of belt, and feed the shoulder belt attempt to move it side to side the retractor. back into the retractor. When and back and forth. When the installing a forward-facing child child restraint is properly restraint, it may be helpful to installed, there should be no use your knee to push down on more than 2.5 cm (1 in) of the child restraint as you movement. tighten the belt. If the airbag is off, the OFF indicator Try to pull the belt out of the in the passenger airbag status retractor to make sure the indicator will come on and stay on retractor is locked. If the when the vehicle is started. retractor is not locked, repeat Steps 5 and 6. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

124 Seats and Restraints If a child restraint has been installed and the ON indicator is lit, see “If the On Indicator Is Lit for a Child Restraint” under Passenger Sensing System 0 92. To remove the child restraint, unbuckle the vehicle seat belt and let it return to the stowed position. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Storage 125 Storage To access the lower glove box, Storage unlock with the key and pull down Compartments on the handle. Storage Compartments Storage Compartments ...... 125 { Warning Cupholders Glove Box ...... 125 Front Cupholders ...... 125 Do not store heavy or sharp Underseat Storage ...... 126 objects in storage compartments. There may be cupholders on the Rear Storage ...... 126 In a crash, these objects may center front seat console armrest. cause the cover to open and Center Console Storage ...... 126 Rear Floor Console Storage ...... 127 could result in injury. Additional Storage Features Cargo Tie-Downs ...... 127 Glove Box

If equipped, pull the rear seat armrest down to access the cupholders. To access the upper glove box, pull up on the handle. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

126 Storage Underseat Storage Rear Storage Center Console Storage

Bench Seat There may be storage under the There may be storage in the rear Pull the strap on the side of the rear passenger seat. Lift up on the seat. Pull the tab to access. center seatback to access the seat bench to access. Push the seat Push the storage door to close. The storage area and cupholders. Do bench toward the floor to close. storage door must be closed before not use the center seatback as a installing child restraints. seating position when the seatback is folded down. To raise the seatback, push the seatback rearward until it locks in the upright position. Push and pull on the seatback to make sure it is locked. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Storage 127 Floor Console Storage Additional Storage Features Cargo Tie-Downs

Bench Seat Press the latch and lift to open. If equipped with front center seat storage, unlock with the ignition key, press the latch, and lift to open.

This vehicle is equipped with 12 fixed cargo tie-downs.

Caution

The truck bed walls will collapse if the tie-downs are overloaded.

Bucket Seat Press the latch and lift to open. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

128 Storage Any of the 12 locations inside the 3. Fasten the tie-down firmly by truck bed can be used. The Caution hand only. Do not use tools. maximum load per corner is 227 kg To remove: (500 lb). The truck bed walls will collapse if the tie-downs are overloaded. 1. Remove the tie-down loop Accessory Tie-Downs 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, The vehicle may be equipped with To install: toggle guide, and toggle nut cargo tie-downs. from the truck bed wall 1. Insert a tie-down loop completely. 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. 5. Reinstall the tie-down loop through the backing plate into The maximum load is 113 kg 2. Turn the tie-down loop the toggle nut for reuse. (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-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 129 Voltmeter Gauge ...... 146 Engine Coolant Temperature Instruments and Seat Belt Reminders ...... 146 Warning Light ...... 155 Controls Airbag Readiness Light ...... 147 Driver Mode Control Light . . . . 156 Passenger Airbag Status Tire Pressure Light ...... 156 Indicator ...... 148 Engine Oil Pressure Light Controls Charging System Light ...... 148 (Uplevel Cluster) ...... 157 Steering Wheel Adjustment . . . 130 Malfunction Indicator Lamp Low Fuel Warning Light ...... 157 Steering Wheel Controls ...... 131 () ...... 149 Security Light ...... 157 Heated Steering Wheel ...... 131 Brake System Warning High-Beam On Light ...... 157 Horn ...... 131 Light ...... 151 Front Fog Lamp Light ...... 158 Windshield Wiper/Washer . . . . 131 Electric Parking Brake Lamps On Reminder ...... 158 Compass ...... 132 Light ...... 152 Cruise Control Light ...... 158 Clock ...... 132 Service Electric Parking Brake Door Ajar Light ...... 158 Light ...... 152 Power Outlets ...... 132 Information Displays Wireless Charging ...... 135 Antilock Brake System (ABS) Warning Light ...... 152 Driver Information Center (DIC) Warning Lights, Gauges, and Four-Wheel-Drive Light ...... 153 (Base Level) ...... 159 Indicators Tow/Haul Mode Light ...... 153 Driver Information Center (DIC) Warning Lights, Gauges, and Hill Descent Control Light . . . . 153 (Midlevel and Uplevel) ...... 160 Indicators ...... 137 Lane Keep Assist (LKA) Head-Up Display (HUD) ...... 163 Instrument Cluster ...... 138 Light ...... 153 Vehicle Messages ...... 142 Vehicle Ahead Indicator ...... 154 Vehicle Messages ...... 166 Odometer ...... 142 Pedestrian Ahead Indicator . . . 154 Engine Power Messages . . . . . 167 Trip Odometer ...... 142 Traction Off Light ...... 154 Vehicle Speed Messages . . . . . 167 Tachometer ...... 143 Traction Control System (TCS)/ ...... 143 Electronic Stability Control Vehicle Personalization Engine Oil Pressure Light ...... 154 Vehicle Personalization ...... 167 Gauge ...... 144 Electronic Stability Control Engine Coolant Temperature (ESC) Off Light ...... 155 Universal Remote System Gauge ...... 145 Universal Remote System . . . . 172 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

130 Instruments and Controls Universal Remote System Controls Tilt and Telescoping Wheel Programming ...... 172 Universal Remote System Operation ...... 175 Steering Wheel Adjustment

To adjust the tilt and telescoping steering wheel, if equipped: 1. Pull the lever down. To adjust the steering wheel: 2. Move the steering wheel up or down. 1. Pull the lever down. 3. Pull or push the steering wheel 2. Move the steering wheel up closer or away from you. or down. 4. Pull the lever up to lock the 3. Pull the lever up to lock the steering wheel in place. steering wheel in place. Do not adjust the steering wheel while driving. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 131 Steering Wheel Controls Automatic Heated Steering Wheel Windshield Wiper/Washer The infotainment system can be If equipped with remote start, the operated by using the steering heated steering wheel will turn on wheel controls. See “Steering Wheel automatically during a remote start Controls” in the infotainment along with the heated seats when it manual. is cold outside. The heated steering wheel indicator light may not Heated Steering Wheel come on. If equipped with auto heated seats, the heated steering wheel will turn on when the auto heated seat is activated. The heated steering The windshield wiper control is on wheel indicator will follow the state the turn signal lever. of the steering wheel heat. The windshield wipers are controlled See Heated and Ventilated Front by turning the band with N on it. 0 Seats 75 and Vehicle With the ignition on or in ACC/ Personalization 0 167. ACCESSORY, turn the N band to Horn select the wiper speed. HI : Use for fast wipes. To sound the horn, press a on the steering wheel. LO : Use for slow wipes. ( : Press to turn the heated 3 : Turn the band up for more steering wheel on or off. A light next frequent intermittent wipes or down to the button displays when the for less frequent intermittent wipes. feature is turned on. OFF : Use to turn the wipers off. The steering wheel takes about three minutes to start heating. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

132 Instruments and Controls 1x : For a single wipe, briefly turn thaw them. Damaged blades should System (GPS) antenna, Electronic the N band down. For several be replaced. See Wiper Blade Stability Control (ESC), and vehicle 0 wipes, hold the band down. Replacement 344. speed information. L : Press L on the windshield Heavy snow or ice can overload the The compass system is designed to wiper control to spray windshield wiper motor. operate for a certain number of washer fluid and activate the wipers. miles or degrees of turn before Wipe Parking needing a signal from the GPS The wipers will continue until L is If the ignition is turned off while the satellites. When the compass released or the maximum wash time wipers are on LO, HI, or 3, they display shows CAL, drive the is reached. When L is released, will immediately stop. vehicle for a short distance in an additional wipes may occur open area where it can receive a depending on how long the If the windshield wiper control is GPS signal. The compass system windshield washer had been then moved to OFF before the driver will automatically determine when a activated. See Washer Fluid 0 334 door is opened or within 10 minutes, GPS signal is restored and provide for information on filling the the wipers will restart and move to a heading again. windshield washer fluid reservoir. the base of the windshield. If the ignition is turned off while the Clock wipers are performing wipes due to { Warning The time and date for the clock can windshield washing, the wipers be set using the infotainment In freezing weather, do not use continue to run until they reach the system. See Time/Date in the washer until the windshield is base of the windshield. “ ” System under Settings in the warmed. Otherwise the washer “ “ “ ” infotainment manual. fluid can form ice on the Compass windshield, blocking your vision. The vehicle may have a compass Power Outlets display on the Driver Information Accessory power outlets can be Clear snow and ice from the wiper Center (DIC). The compass receives used to plug in electrical equipment, blades before using them. If frozen its heading and other information such as a cell phone, MP3 to the windshield, carefully loosen or from the Global Positioning player, etc. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 133 When adding electrical equipment, { Warning be sure to follow the proper installation instructions included with Power is always supplied to the the equipment. See Add-On outlets. Do not leave electrical Electrical Equipment 0 306. equipment plugged in when the vehicle is not in use because the Caution vehicle could catch fire and cause injury or death. Hanging heavy equipment from the power outlet can cause damage not covered by the Caution vehicle warranty. The power Rear of Front Center Console outlets are designed for accessory power plugs only, such The vehicle has one accessory Leaving electrical equipment power outlet under the climate plugged in for an extended period as cell phone charge cords. control system and one accessory of time while the vehicle is off will power outlet on the rear of the drain the battery. Always unplug Power Outlet 110/120-Volt center console, if equipped, or on electrical equipment when not in Alternating Current the rear of the bench seat, use and do not plug in equipment if equipped. that exceeds the maximum If equipped, the vehicle has two alternating current power outlets. Lift the cover to access and replace 15 amp rating. when not in use. Certain power accessory plugs may not be compatible with the accessory power outlet and could overload vehicle or adapter fuses. If a problem is experienced, see your dealer. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

134 Instruments and Controls after 10 seconds, during which the indicator light on the switch will flash. An indicator light on the outlet illuminates when power is provided to the outlet and no system fault is detected. The outlets will not operate when the ignition is off, the DC/AC switch is not pressed, or the plug is not fully seated into the outlet. If equipment is connected using In Cab Power Outlet and DC/AC Truck Bed Power Outlet more than 400 watts or a system Switch When the ignition is on, power is fault is detected, a protection circuit supplied to the outlets after the shuts off the power supply and the DC/AC switch is pressed. A green indicator light turns off. indicator light on the DC/AC switch Do not use a power outlet with a indicates when the DC/AC operation missing or damaged cover. is active. One power outlet can be used with electrical equipment that The power outlet is not designed for uses a maximum of 400 watts. the following, and may not work If both outlets are being used, 400 properly if they are plugged in: watts will be shared between the . Equipment with high initial peak outlets. Ensure that all connected wattage, such as devices do not exceed 400 watts. compressor-driven refrigerators The power outlet can be turned off and electric power tools by pressing the DC/AC switch. The power outlet can be turned back on GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 135 . Other equipment requiring an extremely stable power supply, Warning (Continued) Warning (Continued) such as microcomputer-controlled recommended to consult with between the smartphone and electric blankets and touch your doctor before using the charging pad will become very sensor lamps wireless charging system. hot. On the rare occasion that the charging system does not detect . Medical equipment The vehicle must be on, in ACC/ an object, and the object gets wedged between the smartphone Wireless Charging ACCESSORY, or Retained Accessory Power (RAP) must be and charger, remove the The vehicle may have wireless active. The wireless charging smartphone and allow the object charging on the center console in feature may not correctly indicate to cool before removing it from front of the cupholders. The system charging when the vehicle is in RAP. the charging pad, to prevent operates at 145 kHz and wirelessly See Retained Accessory Power burns. charges one Qi compatible (RAP) 0 225. smartphone. The power output of the system is capable of charging at The operating temperature is −20 °C a rate up to 3 amp (19.5 W) as (−4 °F) to 60 °C (140 °F) for the requested by the compatible charging system and 0 °C (32 °F) to smartphone. See Radio Frequency 35 °C (95 °F) for the smartphone. Statement 0 443. { Warning

{ Warning Remove all objects from the Wireless charging can affect the charging pad before charging operation of an implanted your compatible smartphone. pacemaker or other medical Objects, such as coins, keys, devices. If you have one, it is rings, paper clips, or cards, (Continued) (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

136 Instruments and Controls To charge a compatible smartphone: smartphone from the pad, turn referred license terms, warranty 1. Remove all objects from the it 180 degrees, and wait disclaimers and copyright notices charging pad. The system may three seconds before placing/ are available for download. LG not charge if there are any aligning the smartphone on the Electronics will also provide open objects between the pad again. source code to you on CD-ROM for smartphone and charging pad. a charge covering the cost of 4. If } turns yellow, ensure that performing such distribution (such 2. Place the smartphone face up the charging pad is clear of any as the cost of media, shipping, and on the @ symbol on the objects and that the handling) upon email request to charging pad. smartphone is capable of [email protected]. This offer is wireless charging before valid for three (3) years from the To maximize the charge rate, re-positioning it. If } does not date on which you purchased the ensure the smartphone is fully illuminate, the smartphone may product. seated and centered in the need to re-positioned. holder with nothing under it. Freescale-WCT library A thick smartphone case may Software Acknowledgements Copyright (c) 2012-2014 Freescale prevent the wireless charger Certain Wireless Charging Module Semiconductor, Inc.. All rights from working, or may reduce product from LG Electronics, Inc. reserved. the charging performance. See ("LGE") contains the open source 1. Redistributions of source code your dealer for additional software detailed below. Refer to information. must retain the above copyright the indicated open source licenses notice, this list of conditions 3. A green } will appear on the (as are included following this and the following disclaimer. V on the infotainment display. notice) for the terms and conditions 2. Redistributions in binary form This indicates that the of their use. must reproduce the above smartphone is properly OSS Notice Information copyright notice, this list of positioned and charging. If a conditions and the following smartphone is placed on the To obtain the source code that is contained in this product, please disclaimer in the charging pad and does not } visit http://opensource.lge.com. In display, remove the addition to the source code, all GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 137 documentation and/or other SERVICES; LOSS OF USE, DATA, Warning Lights, materials provided with the OR PROFITS; OR BUSINESS distribution. INTERRUPTION) HOWEVER Gauges, and 3. Neither the name of the CAUSED AND ON ANY THEORY Indicators copyright holder nor the names OF LIABILITY, WHETHER IN of its contributors may be used CONTRACT, STRICT LIABILITY, Warning lights and gauges can to endorse or promote products OR TORT (INCLUDING signal that something is wrong derived from this software NEGLIGENCE OR OTHERWISE) before it becomes serious enough without specific prior written ARISING IN ANY WAY OUT OF to cause an expensive repair or permission. THE USE OF THIS SOFTWARE, replacement. Paying attention to the EVEN IF ADVISED OF THE warning lights and gauges could THIS SOFTWARE IS PROVIDED POSSIBILITY OF SUCH DAMAGE. prevent injury. BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" Some warning lights come on briefly AND ANY EXPRESS OR IMPLIED when the engine is started to WARRANTIES, INCLUDING, BUT indicate they are working. When NOT LIMITED TO, THE IMPLIED one of the warning lights comes on WARRANTIES OF and stays on while driving, or when MERCHANTABILITY AND FITNESS one of the gauges shows there may FOR A PARTICULAR PURPOSE be a problem, check the section that ARE DISCLAIMED. IN NO EVENT explains what to do. Waiting to do SHALL THE COPYRIGHT HOLDER repairs can be costly and even OR CONTRIBUTORS BE LIABLE dangerous. FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

138 Instruments and Controls Instrument Cluster

Base Level Cluster English Shown, Metric Similar GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 139

Midlevel Cluster English Shown, Metric Similar GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

140 Instruments and Controls

Uplevel Cluster English Standard Shown, Metric Similar GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 141 Cluster Menu (Midlevel and . Info App. This is where the average of the vehicle’s fuel Uplevel) selected Driver Information economy over recent driving history Center (DIC) displays can be and the amount of fuel remaining in There is an interactive display area viewed. See “Driver Information the fuel tank. Fuel range cannot be in the center of the instrument Center (DIC) (Uplevel)” in the reset. cluster. Index. Audio . Audio In the Audio menu, use the . Navigation thumbwheel to scroll through . Phone options, browse for music, select from favorites, or change the audio . Options source. In the main view, scroll to Home change the station or go to the next or previous track. Information displayed here can be customized from the Options menu. Navigation Speedometer : Displays how fast In the Navigation menu, if there is the vehicle is moving in either no active route, a compass will be kilometers per hour (km/h) or miles displayed. If there is an active route, Use the right steering wheel control per hour (mph). press the thumbwheel to cancel or resume route guidance, mute or to open and scroll through the Speed Sign : Shows sign different items and displays. unmute voice guidance, or access information, which comes from a Recents or Favorites. Press S or T to access the cluster roadway database in the onboard applications. Use the thumbwheel to navigation, if equipped. Phone scroll through the list of available Time : Displays the current time. In the Phone menu, if there is no features. Press the thumbwheel to Fuel Range : Displays the active phone call, view recent calls, select. Not all applications will be approximate distance the vehicle scroll through contacts, select from available on all vehicles. can be driven without refueling. The the favorites, or change the phone . Home fuel range estimate is based on an GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

142 Instruments and Controls source. If there is an active call, desired item is highlighted. the speed. Once the speed is set, mute the phone or switch to handset A selected mark will be displayed this feature can be turned off by operation. next to the selected item. pressing the thumbwheel while viewing this page. If the selected Options Info Page Options : Press the thumbwheel while Info Page speed limit is exceeded, a pop-up Use the thumbwheel to scroll Options is displayed to enter and warning is displayed with a chime. through items in the Options menu. select the items to be displayed in Software Information : Press the Head-up Display (HUD) : the Info app. A selected mark will be thumbwheel while Software If equipped, this feature allows for displayed next to the selected item. Information is highlighted to display adjusting the angle of the HUD Home : Press the thumbwheel to open source software information. image and changing or turning off select the available elements to the Speed Limit Sign. display. Not all elements will be Speedometer HUD Rotation: Press the available on all vehicles: The speedometer shows the thumbwheel while Adjust Rotation is Speedometer, Speed Sign, Time, vehicle's speed in either kilometers highlighted to enter Adjust Mode. and Fuel Range. per hour (km/h) or miles per Scroll to adjust the angle of the Display : Press the thumbwheel to hour (mph). HUD display. Press the thumbwheel enter the Display menu. Select to to confirm and save the setting. This turn on or off the compass or Odometer feature may only be available in speed sign. P (Park). The odometer shows how far the Speed Warning : The Speed vehicle has been driven, in either Speed Limit Style: Press the Warning display allows the driver to kilometers or miles. The odometer thumbwheel while Speed Limit Style set a speed that they do not want to displays on the Speed page of the is highlighted to change the speed exceed. To set the Speed Warning, Driver Information Center (DIC). sign style or to turn it off. press the thumbwheel when Speed Units : Press the thumbwheel while Warning is displayed, or press the Trip Odometer Units is displayed to enter the Units thumbwheel on the main view to set menu. Choose US or metric units by the speed value. Scroll to adjust the The trip odometer shows how far pressing the thumbwheel while the value. Press the thumbwheel to set the vehicle has been driven since the trip odometer was last reset. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 143 The trip odometer is accessed and Fuel Gauge reset through the Driver Information Center (DIC). See Driver Information Center (DIC) (Midlevel and Uplevel) 0 160 or Driver Information Center (DIC) (Base Level) 0 159. Tachometer The tachometer displays the engine speed in revolutions per minute (rpm). Uplevel English Fuel Gauge For vehicles with the Stop/Start Shown, Base Level and Midlevel Uplevel Metric Fuel Gauge Shown, system, when the ignition is on, the Fuel Gauge Similar tachometer indicates the vehicle Base Level and Midlevel Fuel status. When pointing to AUTO Gauge Similar When the ignition is on, the fuel STOP, the engine is off but the gauge indicates about how much vehicle is on and can move. The fuel is left in the tank. engine could auto start at any time. There is an arrow near the fuel When the indicator points to OFF, gauge pointing to the side of the the vehicle is off. vehicle the fuel door is on. When the engine is on, the When the indicator nears empty, the tachometer will indicate the engine’s low fuel light comes on. There still is revolutions per minute (rpm). The a little fuel left, but the vehicle tachometer may vary by several should be refueled soon. hundred rpm’s, during Auto Stop mode, when the engine is shutting off and restarting. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

144 Instruments and Controls Here are four things that some Engine Oil Pressure owners ask about. None of these show a problem with the fuel gauge: Gauge . At the service station, the fuel pump shuts off before the gauge reads full. . It takes a little more or less fuel to fill up than the gauge indicated. For example, the gauge may have indicated the tank was half full, but it actually took a little more or less than Uplevel English Shown, Base half the tank's capacity to fill the tank. Level and Midlevel Similar . The gauge moves a little while Uplevel Metric Shown, Base Level The engine oil pressure gauge shows the engine oil pressure turning a corner or speeding up. and Midlevel Similar in kPa (kilopascals) or psi (pounds . The gauge takes a few seconds per square inch) when the engine is to stabilize after the ignition is running. turned on, and goes back to empty when the ignition is Oil pressure can vary with engine turned off. speed, outside temperature, coolant temperature, and oil viscosity. On some models, the oil pump will vary engine oil pressure according to engine needs. Oil pressure may change quickly as the engine speed or load varies. This is normal. If the oil pressure warning light or Driver GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 145 Information Center (DIC) message Engine Coolant indicates oil pressure outside the normal operating range, check the Temperature Gauge vehicle's oil as soon as possible. See Engine Oil 0 321.

Caution

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 Uplevel English Shown, Base by the vehicle warranty. Check Level and Midlevel Similar the oil level as soon as possible. Uplevel Metric Shown, Base Level This gauge measures the Add oil if required, but if the oil temperature of the vehicle's engine and Midlevel Similar level is within the operating range coolant. and the oil pressure is still low, While driving under normal have the vehicle serviced. Always operating conditions, if the needle follow the maintenance schedule moves into the red warning area, for changing engine oil. the engine is too hot. Pull off the road, stop the vehicle, and turn off If the vehicle has a diesel engine, the engine as soon as possible. see the Duramax diesel supplement. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

146 Instruments and Controls Voltmeter Gauge The voltmeter gauge may also read Seat Belt Reminders lower when in fuel economy mode. This is normal. Driver Seat Belt Reminder Readings outside the normal Light operating range can also occur There is a driver seat belt reminder when a large number of electrical light on the instrument cluster. accessories are operating in the 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 condition should correct itself as When the vehicle is started, this Uplevel Shown, Base Level and higher engine speeds allow the Midlevel Similar light flashes and a chime may come charging system to create maximum on to remind the driver to fasten When the ignition is on, this gauge power. their seat belt. Then the light stays indicates the battery voltage. The vehicle can only be driven for a on solid until the belt is buckled. When the engine is running, this short time with the readings outside This cycle may continue several gauge shows the condition of the the normal operating range. If the times if the driver remains or charging system. The gauge can vehicle must be driven, turn off all becomes unbuckled while the transition from a higher to lower or a accessories, such as the radio and vehicle is moving. lower to higher reading. This is air conditioner. If the driver seat belt is buckled, normal. If the vehicle is operating Readings outside the normal neither the light nor the chime outside the normal operating range, operating range indicate a possible comes on. the charging system light comes on. problem in the electrical system. 0 See Charging System Light 148. Have the vehicle serviced as soon as possible. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 147 Passenger Seat Belt Reminder The front passenger seat belt The airbag readiness light comes on Light reminder light and chime may turn for several seconds when the on if an object is put on the seat vehicle is started. If the light does There may be a passenger seat belt such as a briefcase, handbag, not come on then, have it fixed reminder light near the passenger grocery bag, laptop, or other immediately. airbag status indicator. See electronic device. To turn off the Passenger Sensing System 0 92. reminder light and/or chime, remove { Warning 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 This light shows if there is an the airbag system might not be electrical problem with the airbag working properly. The airbags in system. The system check includes the vehicle might not inflate in a For vehicles equipped with the crash, or they could even inflate passenger seat belt reminder light, the airbag sensor(s), the passenger without a crash. To help avoid when the vehicle is started this light sensing system, the pretensioners, injury, have the vehicle serviced flashes and a chime may come on the airbag modules, the wiring, and to remind passengers to fasten their the crash sensing and diagnostic right away. seat belt. Then the light stays on module. For more information on the solid until the belt is buckled. This airbag system, see Airbag System 0 If there is a problem with the airbag cycle continues several times if the 86. system, a Driver Information Center passenger remains or becomes (DIC) message may also come on. unbuckled while the vehicle is moving. If the passenger seat belt is buckled, neither the chime nor the light comes on. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

148 Instruments and Controls Passenger Airbag Status after several more seconds, the status indicator will light either ON { Warning Indicator or OFF, or either the on or off The vehicle has a passenger symbol, to let you know the status of If the airbag readiness light ever sensing system. See Passenger the front outboard passenger frontal comes on and stays on, it means Sensing System 0 92 for important airbag. that something may be wrong with the airbag system. To help safety information. The overhead If the word ON or the on symbol is console has a passenger airbag avoid injury to yourself or others, lit on the passenger airbag status have the vehicle serviced right status indicator. indicator, it means that the front away. See Airbag Readiness outboard passenger frontal airbag is Light 0 147 for more information, allowed to inflate. including important safety If the word OFF or the off symbol is information. lit on the passenger airbag status indicator, it means that the passenger sensing system has Charging System Light United States turned off the front outboard passenger frontal airbag. 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 Canada your dealer for service. The charging system light comes on briefly when the ignition is turned When the vehicle is started, the on, but the engine is not running, as passenger airbag status indicator a check to show the light is working. will light ON and OFF, or the It should go out when the engine is symbols for on and off, for several started. seconds as a system check. Then, GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 149 If the light stays on, or comes on See Ignition Positions (Key Access) while driving, there may be a 0 217 or Ignition Positions (Keyless Caution problem with the electrical charging Access) 0 219. system. Have it checked by your Modifications to the engine, dealer. Driving while this light is on transmission, exhaust, intake, could drain the battery. or fuel system, or the use of replacement tires that do not When this light comes on, or is meet the original tire flashing, the Driver Information specifications, can cause this light Center (DIC) also displays a to come on. This could lead to message. Malfunctions are often indicated by costly repairs not covered by the If a short distance must be driven the system before any problem is vehicle warranty. This could also with the light on, be sure to turn off noticeable. Being aware of the light affect the vehicle’s ability to pass all accessories, such as the radio and seeking service promptly when an Emissions Inspection/ and air conditioner. it comes on may prevent damage. Maintenance test. See Accessories and Modifications Malfunction Indicator 0 Caution 313. Lamp (Check Engine Light) If the vehicle is driven continually If the light is flashing : A with this light on, the emission malfunction has been detected that This light is part of the vehicle’s control system may not work as emission control on-board could damage the emission control well, the fuel economy may be diagnostic system. If this light is on system and increase vehicle lower, and the vehicle may not while the engine is running, a emissions. Diagnosis and service malfunction has been detected and run smoothly. This could lead to may be required. the vehicle may require service. The costly repairs that might not be To help prevent damage, reduce light should come on to show that it covered by the vehicle warranty. vehicle speed and avoid hard is working when the ignition is on accelerations and uphill grades. and the engine is not running. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

150 Instruments and Controls If towing a trailer, reduce the the atmosphere. A few driving amount of cargo being hauled as trips with the adapter removed soon as possible. may turn off the light. If the light continues to flash, find a . Poor fuel quality can cause safe place to park. Turn the vehicle inefficient engine operation and off and wait at least 10 seconds poor driveability, which may go before restarting the engine. If the away once the engine is warmed The DLC is under the instrument light is still flashing, follow the up. If this occurs, change the panel to the left of the steering previous guidelines and see your fuel brand. It may require at wheel. Connecting devices that are dealer for service as soon as least one full tank of the proper not used to perform an Emissions possible. fuel to turn the light off. Inspection/Maintenance test or to See Recommended Fuel service the vehicle may affect If the light is on steady : A 0 malfunction has been detected. (Except 6.2L V8 Engine) 271 vehicle operation. See Add-On or Recommended Fuel (6.2L Electrical Equipment 0 306. See Diagnosis and service may be 0 required. V8 Engine) 271. your dealer if assistance is needed. Check the following: If the light remains on, see your The vehicle may not pass dealer. inspection if: . If fuel has been added to the vehicle using the capless funnel Emissions Inspection and . The light is on when the engine adapter, make sure that it has Maintenance Programs is running. been removed. See “Filling the If the vehicle requires an Emissions . The light does not come on Tank with a Portable Gas Can” Inspection/Maintenance test, the when the ignition is on while the 0 under Filling the Tank 273. test equipment will likely connect to engine is off. The diagnostic system can the vehicle's Data Link . Critical emission control systems detect if the adapter has been Connector (DLC). left installed in the vehicle, have not been completely allowing fuel to evaporate into diagnosed. If this happens, the vehicle would not be ready for inspection and might require several days of routine driving GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/23/18

Instruments and Controls 151 before the system is ready for If the light comes on while driving, inspection. This can happen if pull off the road and stop carefully. the 12-volt battery has recently The pedal might be harder to push, been replaced or run down, or if or the pedal may go closer to the the vehicle has been recently floor. It could take longer to stop. serviced. If the light is still on, have the Metric English vehicle towed for service. See See your dealer if the vehicle will 0 not pass or cannot be made ready Towing the Vehicle 398. This light should come on briefly for the test. when the engine is started. If it does { Warning Brake System Warning not come on then, have it fixed so it will be ready to warn if there is a The brake system might not be Light problem. working properly if the brake The vehicle brake system consists The brake system warning light may system warning light is on. of electronically controlled hydraulic also come on when the parking Driving with the brake system brake circuits. If a fault is detected, brake is set, if the vehicle has low warning light on can lead to a valves are adjusted to allow the brake fluid, or if the brakes are crash. If the light is still on after brake pedal to push brake fluid severely faded. See Brake Fluid the vehicle has been pulled off directly into the hydraulic brake 0 336. If the brakes are overheated, the road and carefully stopped, circuits. When a fault occurs, the DIC messages may display, and the have the vehicle towed for brake system warning light comes vehicle speed may be limited. If the service. on, and Driver Information Center brake fluid is not low, if the brakes (DIC) messages may display. are not overheated, and if the Vehicle speed may also be limited parking brake is fully released, then and the amount of brake pedal force the vehicle has a brake problem. applied may need to increase. Have Have the vehicle brake system the vehicle brake system serviced serviced as soon as possible. as soon as possible. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

152 Instruments and Controls Electric Parking Brake Service Electric Parking Antilock Brake System Light Brake Light (ABS) Warning Light

Metric English This light should come on briefly This light comes on briefly when the This light comes on when the when starting the vehicle. If it does engine is started. parking brake is applied. If the light not come on, have it fixed so it will continues flashing after the parking If the light does not come on, have it be ready to warn if there is a brake is released, or while driving, fixed so it will be ready to warn if problem. there is a problem with the Electric there is a problem. Parking Brake system. A message If this light stays on, take the vehicle If the light comes on while driving, may also display in the Driver to your dealer as soon as possible. stop as soon as it is safely possible Information Center (DIC). See the information for the Electric and turn off the vehicle. Then start Parking Brake under Electric If the light does not come on, the engine again to reset the Parking Brake 0 241. A message or remains flashing, see your dealer. system. If the ABS light stays on, may also display in the Driver or comes on again while driving, the Information Center (DIC). vehicle needs service. A chime may also sound when the light comes on steady. If the ABS light is the only light on, the vehicle has regular brakes, but the antilock brakes are not functioning. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 153 If both the ABS and the brake If the light turns amber, there may If equipped, the Hill Descent Control system warning light are on, the be a malfunction with the light comes on when the system is vehicle's antilock brakes are not four-wheel-drive system. See your ready for use. When the light functioning and there is a problem dealer. flashes, the system is active. with the regular brakes. See your See Four-Wheel Drive 0 235. See Hill Descent Control (HDC) dealer for service. 0 245. See Brake System Warning Light Tow/Haul Mode Light 0 151. Lane Keep Assist (LKA) Light Four-Wheel-Drive Light

For vehicles with the Tow/Haul Mode feature, this light comes on Auto Mode Shown, Other Modes when the Tow/Haul Mode has been If available, this light comes on Similar activated. briefly while starting the vehicle. 0 If equipped, the four-wheel-drive See Tow/Haul Mode 234. If it does not come on, have the light displays what mode the vehicle vehicle serviced. is in. The light will show each mode: Hill Descent Control Light 2WD, 4HI, AUTO (all transfer This light is green if LKA is available cases); 4LOW and N (two-speed to assist. transfer case only). LKA may assist by gently turning The light will flash when a shift is in the steering wheel if the vehicle progress. Once the shift is complete approaches a detected lane marking the light will be steady. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

154 Instruments and Controls without using the turn signal in that Pedestrian Ahead dealer. If the system is working direction. The LKA light will turn normally, the indicator light then amber. Indicator turns off. This light is amber and flashes as a The traction off light comes on when Lane Departure Warning (LDW) the Traction Control System (TCS) alert, to indicate that the lane has been turned off by pressing and marking has been crossed. releasing the TCS/ESC button. See Lane Keep Assist (LKA) 0 269. This light and the Electronic Stability Control (ESC) OFF light come on Vehicle Ahead Indicator If equipped, this indicator will when ESC is turned off. display amber when a nearby If the TCS is off, wheel spin is not pedestrian is detected directly in limited. Adjust driving accordingly. front of the vehicle. See Traction Control/Electronic See Front Pedestrian Braking (FPB) Stability Control 0 243. System 0 264. Traction Control System Traction Off Light If equipped, this indicator will (TCS)/Electronic Stability display green when a vehicle is Control Light detected ahead and amber when you are following a vehicle ahead much too closely. See Forward Collision Alert (FCA) System 0 260. This light comes on briefly while starting the engine. If it does not, have the vehicle serviced by your GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 155 If equipped, the Electronic Stability This light will flash when Trailer Engine Coolant Control (ESC) or TCS indicator/ Sway Control is active. See Trailer warning light comes on briefly when Sway Control (TSC) 0 293. Temperature Warning the engine is started. Light If the light does not come on, have Electronic Stability the vehicle serviced by your dealer. Control (ESC) Off Light If the system is working normally, the indicator light turns off. If the light is on and not flashing, the TCS, and potentially the ESC system have been disabled. This light comes on briefly while If the indicator/warning light is on starting the vehicle. and flashing, the TCS and/or the If it does not, have the vehicle ESC system is actively working. This light comes on briefly while starting the engine. If it does not, serviced by your dealer. If the See Traction Control/Electronic have the vehicle serviced by your system is working normally the Stability Control 0 243. dealer. indicator light goes off. Trailer Sway Control Light This light comes on when the ESC (Uplevel Cluster) system is turned off. If ESC is off, Caution the Traction Control System (TCS) The engine coolant temperature is also off. warning light indicates that the If the ESC and TCS are off, the vehicle has overheated. Driving system does not assist in controlling with this light on can damage the the vehicle. Turn on the TCS and engine and it may not be covered the ESC systems and the warning by the vehicle warranty. See light turns off. Engine Overheating 0 331. See Traction Control/Electronic Stability Control 0 243. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

156 Instruments and Controls The engine coolant temperature For vehicles with the Tire Pressure warning light comes on when the Monitor System (TPMS), this light engine has overheated. comes on briefly when the engine is If this happens, pull over and turn started. It provides information off the engine as soon as possible. about tire pressures and the TPMS. See Engine Overheating 0 331. When the Light Is On Steady This light comes on when Terrain Mode is selected. This indicates that one or more of Driver Mode Control Light the tires are significantly underinflated. A Driver Information Center (DIC) tire pressure message may also display. Stop as soon as possible, and inflate the tires to the pressure value shown on the Tire and This light comes on when Off-Road Loading Information label. See Tire This light comes on when Sport Pressure 0 367. Mode is selected. Mode is selected. When the Light Flashes First and Tire Pressure Light 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 comes on when Snow See Tire Pressure Monitor Mode is selected. Operation 0 370. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 157 Engine Oil Pressure Light This light should come on briefly as Security Light the engine is started. If it does not (Uplevel Cluster) come on, have the vehicle serviced by your dealer. Caution If the light comes on and stays on, it Lack of proper engine oil means that oil is not flowing through maintenance can damage the the engine properly. The vehicle engine. Driving with the engine oil could be low on oil and might have some other system problem. See low can also damage the engine. The security light should come on your dealer. The repairs would not be covered briefly as the engine is started. If it by the vehicle warranty. Check does not come on, have the vehicle the oil level as soon as possible. Low Fuel Warning Light serviced by your dealer. If the Add oil if required, but if the oil system is working normally, the indicator light turns off. level is within the operating range and the oil pressure is still low, If the light stays on and the engine have the vehicle serviced. Always does not start, there could be a follow the maintenance schedule problem with the theft-deterrent for changing engine oil. system. See Immobilizer Operation 0 55. This light is near the fuel gauge and comes on briefly when the ignition is High-Beam On Light turned on as a check to show it is working. It also comes on when the fuel tank is low on fuel. The light turns off when fuel is added. If it does not, have the vehicle serviced. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

158 Instruments and Controls This light comes on when the The light goes out when the fog The light turns off when the cruise high-beam headlamps are in use. lamps are turned off. See Fog control is turned off. See Cruise See Headlamp High/Low-Beam Lamps 0 181. Control 0 250. Changer 0 178. IntelliBeam Light Lamps On Reminder Door Ajar Light

This light comes on when the This light comes on when the This light comes on when a door is IntelliBeam system, if equipped, is exterior lamps are in use. See open or not securely latched. Before Exterior Lamp Controls 0 176. driving, check that all doors are enabled. See Exterior Lamp 0 properly closed. Controls 176. Cruise Control Light Front Fog Lamp Light

For vehicles with cruise control, the For vehicles with fog lamps, this cruise control light is white when the light comes on when the fog lamps cruise control is on and ready, and turns green when the cruise control are on. is set and active. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 159 Information Displays . Brake Pad Life recent driving history and the . Units amount of fuel remaining in the fuel tank. Fuel range cannot be reset. Driver Information Center Digital Speedometer Tire Pressure (DIC) (Base Level) The speedometer shows how fast Turn the trip odometer reset stem The DIC displays are shown in the the vehicle is moving in either until a vehicle with the approximate center of the instrument cluster. The kilometers per hour (km/h) or miles pressures of all four tires displays. displays show the status of many per hour (mph). The speedometer Tire pressure is displayed in either vehicle systems. The trip odometer cannot be reset. kilopascal (kPa) or in pounds per reset stem in the instrument cluster Trip 1 or 2 and Average Fuel square inch (psi). is used to access the DIC menu Economy items. See Tire Pressure Monitor System Turn the trip odometer reset stem 0 369 and Tire Pressure Monitor If the vehicle has a diesel engine, until TRIP 1 or TRIP 2 displays. The Operation 0 370. see the Duramax diesel supplement current distance traveled, in either for more information. kilometers (km) or miles (mi), since Remaining Oil Life DIC Menu Items the last reset for the trip odometer is Turn the trip odometer reset stem shown, as well as the average fuel until REMAINING OIL LIFE Turn the trip odometer reset stem to economy. The trip odometer and the displays. An estimate of the oil's scroll through the following menu average fuel economy can be reset remaining useful life is shown. items: by pressing and holding the trip REMAINING OIL LIFE 99% means . Digital Speedometer odometer reset stem. 99% of the current oil life remains. . Trip 1/2 Fuel Range When the remaining oil life is low, the CHANGE ENGINE OIL SOON . Fuel Range This display shows the approximate message will appear on the display. . Tire Pressure distance the vehicle can be driven The oil should be changed as soon without refueling. The fuel range 0 . Remaining Oil Life as possible. See Engine Oil 321. estimate is based on an average of In addition to the engine oil life . Air Filter Life the vehicle's fuel economy over system monitoring the oil life, GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

160 Instruments and Controls additional maintenance is message displays, the engine air If the vehicle has a diesel engine, recommended. See Maintenance filter should be replaced as soon as see the Duramax diesel Schedule 0 415. possible. supplement. The Oil Life display must be reset The Air Filter Life display must be after each oil change. It will not reset after the engine air filter reset itself. Do not reset the Oil Life replacement. To reset, see Engine display at any time other than when Air Filter Life System 0 325. the oil has just been changed. It cannot be reset accurately until Brake Pad Life the next oil change. To reset the This displays an estimate of the engine oil life system, see Engine remaining life of the front and rear Oil Life System 0 323. brake pads. Messages will display based on brake pad wear and the Air Filter Life state of the system. Reset the Brake Turn the trip odometer reset stem Pad Life display after replacing the until AIR FILTER LIFE displays. brake pads. See Brake Pad Life This displays an estimate of the System 0 335. engine air filter’s remaining useful S or T : Press to move left or right life and the state of the system. Driver Information Center between the interactive display Engine Air Filter Life 95% means (DIC) (Midlevel and zones in the cluster. Press the 95% of the current air filter life thumbwheel to select. Uplevel) remains. Messages will display y or z : Use the thumbwheel to based on the engine air filter life and The DIC displays are shown in the scroll up or down in a list. Press the the state of the system. center of the instrument cluster in thumbwheel to select. When the REPLACE AT NEXT OIL the Info app. See Instrument Cluster CHANGE message displays, the 0 138. The displays show the status Info Page Options engine air filter should be replaced of many vehicle systems. The info pages on the DIC can be at the time of the next oil change. turned on or off through the When the REPLACE NOW Options menu. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 161 1. Press T to scroll to the odometer is also shown on this LOW will be displayed when the Options application. page. If equipped, press the vehicle is low on fuel. The fuel thumbwheel to open the menu and range estimate is based on an 2. Scroll y or z to choose Info select to display speed limit signs. average of the vehicle's fuel pages and press the Trip 1 or Trip 2, and Average Fuel economy over recent driving history thumbwheel. Economy : Shows the current and the amount of fuel remaining in the fuel tank. 3. Scroll y or z to move distance traveled, in either through the list of possible kilometers (km) or miles (mi), since Timer : This display can be used as information displays. the trip odometer was last reset. a timer. To start the timer, press the thumbwheel while this display is 4. Press the thumbwheel while an The Average Fuel Economy display shows the approximate average active. The display will show the item is highlighted to select or amount of time that has passed deselect that item. liters per 100 kilometers (L/100 km) or miles per gallon (mpg). This since the timer was last reset. To The info pages can also be turned number is calculated based on the stop the timer, press the on or off through the DIC page Info number of L/100 km (mpg) recorded thumbwheel briefly while this display Page Options. since the last time this menu item is active and the timer is running. Info Pages was reset. This number reflects only Press the thumbwheel while this the approximate average fuel display is active to reset the timer. The following is the list of all economy that the vehicle has right possible DIC info page displays. Oil Life : Shows an estimate of the now, and will change as driving oil's remaining useful life. Some may not be available for your conditions change. particular vehicle. Some items may If REMAINING OIL LIFE 99% is not be turned on by default but can Press the thumbwheel while this displayed, that means 99% of the be turned on through the Options display is active to reset the trip current oil life remains. odometer and the average fuel app. See “Info Page Options” earlier When the remaining oil life is low, in this section. economy. the CHANGE ENGINE OIL SOON Speed : Shows the vehicle speed in Fuel Range : Shows the message will appear on the display. approximate distance the vehicle The oil should be changed as soon either kilometers per hour (km/h) or 0 miles per hour (mph). The vehicle can be driven without refueling. as possible. See Engine Oil 321. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

162 Instruments and Controls In addition to the engine oil life system. Engine Air Filter Life 95% Fuel Economy : Displays average system monitoring the oil life, means 95% of the current air filter fuel economy, the best fuel additional maintenance is life remains. Messages will display economy over the selected recommended. See Maintenance based on the engine air filter life and distance, and a bar graph showing Schedule 0 415. the state of the system. When the instantaneous fuel economy. The Oil Life display must be reset REPLACE AT NEXT OIL CHANGE Press the thumbwheel to change after each oil change. It will not message displays, the engine air the selected distance. Press and reset itself. Do not reset the Oil Life filter should be replaced at the time hold the thumbwheel while this display at any time other than when of the next oil change. When the display is active to reset the best the oil has just been changed. REPLACE NOW message displays, fuel economy and average fuel It cannot be reset accurately until the engine air filter should be economy. This display can also be the next oil change. To reset the replaced as soon as possible. reset by selecting reset in the menu. engine oil life system, press the The Air Filter Life display must be Engine Hours (Hourmeter) : thumbwheel while the Oil Life reset after the engine air filter Shows the total number of hours the display is active. See Engine Oil replacement. To reset, see Engine 0 0 engine has run. This display also Life System 323. Air Filter Life System 325. shows the engine idle hours. Tire Pressure : Shows the Brake Pad Life : This displays an Transmission Fluid approximate pressures of all four estimate of the remaining life of the Temperature : Shows the tires. Tire pressure is displayed in front and rear brake pads. temperature of the automatic either kilopascal (kPa) or in pounds Messages will display based on transmission fluid in either degrees per square inch (psi). If the pressure brake pad wear and the state of the Celsius (°C) or degrees is low, the value for that tire is system. Reset the Brake Pad Life Fahrenheit (°F). shown in amber. display after replacing the brake See Tire Pressure Monitor System pads. See Brake Pad Life System Trailer Brake : On vehicles with the 0 369 and Tire Pressure Monitor 0 335. Integrated Trailer Brake Control Operation 0 370. (ITBC) system, the trailer brake display appears in the DIC. Air Filter Life : Shows an estimate of the engine air filter’s remaining useful life and the state of the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 163 TRAILER GAIN shows the trailer Blank Page : Shows no gain setting. This setting can be information. Caution adjusted from 0.0 to 10.0 with either a trailer connected or disconnected. Head-Up Display (HUD) If you try to use the HUD image as a parking aid, you may OUTPUT shows the power output to misjudge the distance and the trailer any time a trailer with { Warning damage your vehicle. Do not use electric brakes is connected. Output the HUD image as a parking aid. is displayed as a bar graph. Dotted If the HUD image is too bright or lines may appear in the OUTPUT too high in your field of view, it display if a trailer is not connected. may take you more time to see The HUD information can be displayed in various languages. The Off Road : Displays vehicle pitch things you need to see when it is dark outside. Be sure to keep the speedometer reading and other and roll information, road wheel numerical values can be displayed angle, and four-wheel drive (4WD) HUD image dim and placed low in in either English or metric units. status. your field of view. The language selection is changed Follow Distance : If equipped, the through the radio, and the units of current follow time to the vehicle If equipped with HUD, some measurement is changed through ahead is displayed as a time value information about the operation of the instrument cluster. See on this page. the vehicle is projected onto the windshield. The image is projected “Settings” in the infotainment Driver Assistance : If equipped, manual and “Options” under through the HUD lens on top of the 0 shows information for Lane Keep instrument panel. The information Instrument Cluster 138. Assist (LKA) and Forward Collision appears as an image focused out Alert (FCA). toward the front of the vehicle. Info Page Options : Scroll to choose which info pages appear on the DIC. Press the thumbwheel to select or deselect. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

164 Instruments and Controls Some vehicle messages or alerts ! : Press to select the display displayed in the HUD may be view. Each press will change the cleared by using the steering wheel display view. controls. D : Pull and hold to brighten the display. Press and hold to dim the display. Continue to hold to turn the display off. The HUD image will automatically dim and brighten to compensate for outside lighting. Use D to adjust as needed. HUD Display on the Windshield The HUD image can temporarily Depending on how the vehicle is The HUD control is to the left of the light up depending on the angle and equipped, the HUD may display steering wheel. position of sunlight on the HUD some of the following vehicle display. This is normal. To adjust the HUD image: information and vehicle messages Polarized sunglasses could make or alerts: 1. Adjust the driver seat. the HUD image harder to see. . Speed 2. Start the engine. Head-Up Display (HUD) Rotation . Audio 3. Use the following settings to Option . Phone adjust the HUD. This feature allows the angle of the . Navigation $ : Press or pull to center the HUD image to be adjusted. HUD image. The HUD image can . Driver Assistance Features Press the thumbwheel while Adjust only be adjusted up and down, not Rotation is highlighted to enter . Vehicle Messages side to side. Adjust Mode. Scroll to adjust the angle of the HUD display. Press the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 165 thumbwheel to confirm and save the Driver assistance graphics show setting. This feature may only be your vehicle, vehicle ahead, gap available in P (Park). setting, and lane status information. In addition to driver assistance Speed Limit Style Adjustment graphics, pedestrian advisory and The speed limit style can be trailer sway indicators will be changed to a speed limit bar or displayed. speed limit sign from the Options menu. Press the thumbwheel while Speed Limit Style is highlighted to English Shown, Metric Similar change the speed sign style or to Speed View : This displays the turn it off. speedometer reading in English or HUD Views metric units, and speed limit. Some information only appears on There are four views in the HUD. vehicles that have these features, Some vehicle information and and when they are active. vehicle messages or alerts may be English Shown, Metric Similar displayed in any view. Navigation/Active OnStar View : This displays the speed view along with indicators for vehicle ahead, Lane Departure Warning/Lane Keep Assist, trailer sway, and pedestrian advisory. Turn-by-Turn navigation information is shown during active route. The compass heading is English Shown, Metric Similar displayed when navigation routing is Active Safety View : This displays not active. the speed view along with a driver assistance graphic on the left. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

166 Instruments and Controls Navigation Turn-by-Turn Alerts Clean the HUD lens with a soft cloth Vehicle Messages shown in the instrument cluster may sprayed with glass cleaner. Wipe also be displayed in any HUD view. the lens gently, then dry it. Messages displayed on the DIC indicate the status of the vehicle or HUD Troubleshooting some action that may be needed to Check that: correct a condition. Multiple messages may appear one after . Nothing is covering the another. HUD lens. The messages that do not require . The HUD brightness setting is immediate action can be not too dim or too bright. acknowledged and cleared by . The HUD is adjusted to the pressing the thumbwheel. The English Shown, Metric Similar proper height. messages that require immediate Off Road View : This displays the . Polarized sunglasses are action cannot be cleared until that speed view along with indicators for not worn. action is performed. vehicle ahead, Lane Departure All messages should be taken . The windshield and HUD lens Warning/Lane Keep Assist, trailer are clean. seriously; clearing the message sway, four-wheel drive status, and does not correct the problem. pedestrian advisory. Off-road If the HUD image is not correct, If a SERVICE message appears, information such as pitch angle, contact your dealer. see your dealer. steering angle, and rolling angle is The windshield is part of the HUD also shown. system. See Windshield Follow the instructions given in the Replacement 0 345. messages. The system displays Care of the HUD messages regarding the following Clean the inside of the windshield to topics: remove any dirt or film that could . Service Messages reduce the sharpness or clarity of the HUD image. . Fluid Levels . Vehicle Security GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 167 . Brakes be reduced the next time the vehicle Vehicle . Steering is driven. The vehicle may be driven while this message is on, but Personalization . Ride Control Systems maximum acceleration and speed The following are all possible may be reduced. Anytime this . Driver Assistance Systems vehicle personalization features. message stays on, or displays Depending on the vehicle, some . Cruise Control repeatedly, the vehicle should be may not be available. . Lighting and Bulb Replacement taken to your dealer for service as soon as possible. For System, Apps, and Personal . Wiper/Washer Systems features and functions, see . Doors and Windows Vehicle Speed Messages “Settings” in the infotainment manual. . Seat Belts SPEED LIMITED TO To access the vehicle . Airbag Systems XXX KM/H (MPH) personalization menu: . Engine and Transmission This message shows that the 1. Touch the SETTINGS icon on . Tire Pressure vehicle speed has been limited to the Home Page of the the speed displayed. The limited infotainment display. . Battery speed is a protection for various propulsion and vehicle systems, 2. Touch Vehicle to display a list Engine Power Messages such as lubrication, thermal, of available options. suspension, Teen Driver if ENGINE POWER IS REDUCED 3. Touch to select the desired equipped, or tires. feature setting. This message displays when the vehicle's propulsion power is 4. Touch 9 or R to turn a feature reduced. Reduced propulsion power off or on. can affect the vehicle's ability to z accelerate. If this message is on, 5. Touch to go to the top level but there is no observed reduction of the Settings menu. in performance, proceed to your destination. The performance may GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

168 Instruments and Controls The menu may contain the Touch Off or On. Forward Collision System following: Auto Rear Defog This feature will turn on or off Rear Seat Reminder Forward Collision Alert (FCA) and This setting automatically turns the Forward Automatic Braking (FAB). This allows for a chime and a rear defogger on based on The Off setting disables all FCA and message when the rear door has temperature and humidity FAB functions. With the Alert and been opened before or during conditions. Brake setting, both FCA and FAB operation of the vehicle. Touch Off or On. are available. The Alert setting Touch Off or On. disables FAB. See Forward Collision/Detection Systems Automatic Braking (FAB) 0 263. Climate and Air Quality Touch and the following may Touch Off, Alert, or Alert and Brake. Touch and the following may display: Front Pedestrian Detection display: . Alert Type This feature may help avoid or . Auto Fan Speed . Forward Collision System reduce the harm caused by . Auto Defog . Front Pedestrian Detection front-end crashes with nearby . Auto Rear Defog . Lane Change Alert pedestrians. See Front Pedestrian Braking (FPB) System 0 264. Auto Fan Speed . Park Assist Touch Off, Alert, or Alert and Brake. This setting specifies the amount of . Rear Camera Park Assist airflow when the climate control fan Symbols Lane Change Alert setting is Auto Fan. . Rear Cross Traffic Alert This allows the feature to be turned Touch Low, Medium, or High. on or off. See Lane Change Alert Alert Type (LCA) 0 267. Auto Defog This feature sets the type of alert Touch Off or On. This setting automatically directs air from the driver assistance systems to the windshield to assist in to help avoid crashes. defogging, based on temperature and humidity conditions. Touch Beeps or Safety Alert Seat. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 169 Park Assist Chime Volume Lighting This allows the feature to be turned This determines the chime volume Touch and the following may on or off. See Assistance Systems level. display: for Parking or Backing 0 254. Touch the controls on the . Vehicle Locator Lights Select Off, On, or On with Towbar. infotainment display to adjust the . Exit Lighting volume. Rear Camera Park Assist Symbols Vehicle Locator Lights This setting enables the Rear Reverse Tilt Mirror This setting flashes the vehicle s Camera Park Assist Symbols. See This allows the feature to be turned ’ Assistance Systems for Parking or on or off. See Reverse Tilt Mirrors headlamps when K is pressed on Backing 0 254. 0 59. the Remote Keyless Entry (RKE) transmitter. Touch Off or On. Touch Off, On - Driver and Passenger, On - Driver, or On - Touch Off or On. Rear Cross Traffic Alert Passenger. Exit Lighting This allows the Rear Cross Traffic Alert feature to be turned on or off. Remote Mirror Folding This setting specifies how long the See Assistance Systems for Parking When on, the outside mirrors will headlamps stay on after the vehicle or Backing 0 254. remotely fold or unfold when the is turned off and exited. Touch Off or On. Remote Keyless Entry (RKE) Touch Off, 30 Seconds, 60 Seconds, transmitter Q or K button is or 120 Seconds. Comfort and Convenience pressed and held. See Folding Power Door Locks Touch and the following may Mirrors 0 57. display: Touch Off or On. Touch and the following may display: . Chime Volume . Open Door Anti Lock Out . Reverse Tilt Mirror . Auto Door Unlock . Remote Mirror Folding . Delayed Door Lock GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

170 Instruments and Controls Open Door Anti Lock Out Remote Lock, Unlock, Start Remote Door Unlock This setting prevents the driver door Touch and the following may This allows selection of which doors from locking when the door is open. display: will unlock when pressing K on the If this setting is on, the Delayed . Remote Unlock Light Feedback RKE transmitter. Door Lock menu will not be available. If this setting is turned off, . Remote Lock Feedback Touch All Doors or Driver Door. the Delayed Door Lock menu may . Remote Door Unlock Remote Start Auto Cool Seats not be available until the next ignition cycle. . Remote Start Auto Cool Seats If equipped and turned on, this feature will turn on the ventilated . Remote Start Auto Heat Seats Touch Off or On. seats when using remote start on Auto Door Unlock . Remote Window Operation warm days. . Passive Door Unlock See Heated and Ventilated Front This setting allows selection of Seats 0 75 and Remote Vehicle which doors will automatically . Passive Door Lock Start 0 43. unlock when the vehicle is shifted . Remote Left in Vehicle Alert into P (Park). Touch Off or On. Touch Off, All Doors, or Driver Door. Remote Unlock Light Feedback Remote Start Auto Heat Seats When on, the exterior lamps will Delayed Door Lock If equipped and turned on, this flash when unlocking the vehicle feature will turn on the heated seats When on, this feature will delay the with the RKE transmitter. when using remote start on locking of the doors. To override the Touch Off or Flash Lights. cold days. delay, press the power door lock See Heated and Ventilated Front switch on the door. Remote Lock Feedback Seats 0 75 and Remote Vehicle Touch Off or On. This allows selection of what type of Start 0 43. feedback is given when locking the Touch Off or On. vehicle with the RKE transmitter. Touch Off, Lights and Horn, Lights Only, or Horn Only. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 171 Remote Window Operation Touch Off, On with Horn Seat Exit Memory If equipped, this feature enables Chirp, or On. This feature automatically recalls remote operation of the windows Remote Left in Vehicle Alert the previously stored exit button with the RKE transmitter. position when the ignition is See Remote Keyless Entry (RKE) This feature sounds an alert when changed from on or ACC/ System Operation (Keyless Access) the RKE transmitter is left in the ACCESSORY to off and the driver 0 33 or Remote Keyless Entry vehicle. This menu also enables door is open. See Memory Seats (RKE) System Operation (Key Remote No Longer In Vehicle Alert. 0 73. 0 Access) 41. Touch Off or On. Touch Off or On. Touch Off or On. Seating Position Teen Driver Passive Door Unlock Touch and the following may See “Teen Driver” under “Settings” This allows the selection of what display: in the infotainment manual. doors will unlock when using the . Seat Entry Memory button on the driver door to unlock Valet Mode . Seat Exit Memory the vehicle. This will lock the infotainment Touch All Doors or Driver Door Only. Seat Entry Memory system and steering wheel controls. This feature automatically recalls It may also limit access to vehicle Passive Door Lock the previously stored 1 or 2 button storage locations, if equipped. This allows passive locking to be positions when the ignition is To enable valet mode: turned on or off and selects changed from off to on or ACC/ 1. Enter a four-digit code on the feedback. ACCESSORY. See Memory Seats keypad. See Remote Keyless Entry (RKE) 0 73. System Operation (Keyless Access) 2. Select Enter to go to the Touch Off or On. 0 33 or Remote Keyless Entry confirmation screen. (RKE) System Operation (Key 3. Re-enter the four-digit code. Access) 0 41. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

172 Instruments and Controls Touch Lock or Unlock to lock or Universal Remote instructions refer to a garage door unlock the system. Touch Back to opener, but can be used for other go back to the previous menu. System devices. See Radio Frequency Statement Do not use the Universal Remote 0 443. system with any garage door opener that does not have the stop and Universal Remote System reverse feature. This includes any garage door opener model Programming manufactured before April 1, 1982. Read the instructions completely before programming the Universal Remote system. It may help to have another person assist with the programming process. Keep the original hand-held transmitter for use in other vehicles as well as for future programming. Erase the programming when vehicle ownership is terminated. See “Erasing Universal Remote System Buttons” later in this If equipped, these buttons are in the section. overhead console. To program a garage door opener, This system can replace up to three park outside directly in line with and 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-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 173 Make sure the hand-held transmitter 2. At the same time, press and . If the indicator light does has a new battery for quick and hold both the hand-held not come on or the garage accurate transmission of the transmitter button and one of door does not move, a radio-frequency signal. the three Universal Remote second button press may system buttons to be used to be required. For a second Programming the Universal operate the garage door. Do time, press and hold the Remote System not release either button until newly programmed button For questions or programming help, the indicator light goes from a for five seconds. If the light see www.homelink.com/gm or call slow to a rapid flashing light. stays on or the garage door 1-800-355-3515. For calls placed Then release both buttons. moves, programming is outside the U.S., Canada, or Puerto Some garage door openers complete. Rico, international rates will apply may require substitution of . If the indicator light blinks and may differ based on landline or Step 2 with the procedure rapidly for two seconds, mobile phone. under “Radio Signals for Some then changes to a solid light Programming involves Gate Operators” later in this and the garage door does time-sensitive actions, and may time section. not move, continue with out causing the procedure to be 3. Press and hold the newly programming Steps 4–6. repeated. programmed Universal Remote 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. door opener receiver. There is no need to complete Steps 4–6. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

174 Instruments and Controls press and hold the same This may not be long enough for the button a second time for Universal Remote system to pick up two seconds, then release it. the signal during programming. Again, if the door does not If the programming did not work, move or the garage door lamp replace Step 2 under “Programming does not flash, press and hold the Universal Remote System” with the same button a third time for the following: two seconds, then release it. Press and hold the Universal The Universal Remote system Learn or Smart Button Remote system button while should now activate the pressing and releasing the 4. After completing Steps 1 3, – garage door. hand-held transmitter button every locate the Learn or Smart Repeat the process for two seconds until the signal has button inside the garage on the programming the two remaining been successfully accepted by the garage door opener receiver. buttons. Universal Remote system. The The name and color of the Universal Remote system indicator button may vary by Radio Signals for Some Gate light will flash slowly at first and then manufacturer. Operators rapidly. Proceed with Step 3 under 5. Press and release the Learn or For questions or programming help, “Programming the Universal Remote Smart button. Step 6 must be see www.homelink.com/gm or call System” to complete. completed within 30 seconds of 1-800-355-3515. For calls placed pressing this button. outside the U.S., Canada, or Puerto 6. Inside the vehicle, press and Rico, international rates will apply hold the newly programmed and may differ based on landline or Universal Remote system mobile phone. button for two seconds and Some radio–frequency laws and then release it. If the garage gate operators require transmitter door does not move or the signals to time out or quit after lamp on the garage door several seconds of transmission. opener receiver does not flash, GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Instruments and Controls 175 Universal Remote System Reprogramming a Single Operation Universal Remote System Button Using the Universal Remote To reprogram any of the system System buttons: Press and hold the appropriate 1. Press and hold any one of the Universal Remote system button for buttons. Do not release the at least one-half second. The button. indicator light will come on while the signal is being transmitted. 2. The indicator light will begin to flash after 20 seconds. Without Erasing Universal Remote releasing the button, proceed System Buttons with Step 1 under Erase all programmed buttons when “Programming the Universal vehicle ownership is terminated. Remote System.” To erase: 1. Press and hold the two outside buttons until the indicator light begins to flash. This should take about 10 seconds. 2. Release both buttons. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

176 Lighting Battery Load Management . . . 185 Exterior Lighting Lighting Battery Power Protection . . . . . 185 Exterior Lighting Battery Exterior Lamp Controls Exterior Lighting Saver ...... 185 Exterior Lamp Controls ...... 176 Exterior Lamps Off Reminder ...... 178 Headlamp High/Low-Beam Changer ...... 178 Flash-to-Pass ...... 179 Daytime Running Lamps (DRL) ...... 179 Automatic Headlamp System ...... 179 Hazard Warning Flashers . . . . . 180 Turn and Lane-Change Signals ...... 181 Fog Lamps ...... 181 The exterior lamp control is on the Task Lighting ...... 182 instrument panel to the left of the Exterior Cargo Lamps ...... 182 steering wheel. Interior Lighting O : Turns off the automatic Instrument Panel Illumination headlamps and Daytime Running Control ...... 183 Lamps (DRL). Turn the headlamp Dome Lamps ...... 183 control to O again to turn the Reading Lamps ...... 184 automatic headlamps or DRL back on. Lighting Features Entry Lighting ...... 184 Exit Lighting ...... 184 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Lighting 177 For vehicles first sold in Canada, off drained. Turn the headlamp control Turning On and Enabling will only work when the vehicle is in off and then back to the headlamp IntelliBeam P (Park). on position to make the headlamps AUTO : Automatically turns on the stay on for an additional 10 minutes. headlamps, parking lamps, To keep the lamps on for more than taillamps, instrument panel lights, 10 minutes, the ignition must be on roof marker lamps (if equipped), or in ACC/ACCESSORY. front/rear sidemarker lamps, and K : If equipped, turns on the task license plate lamps. lighting. See Task Lighting 0 182. ; : Turns on the parking lamps IntelliBeam System including all lamps, except the If equipped, this system turns the headlamps and fog lamps, To enable the IntelliBeam system, if equipped. vehicle's high-beam headlamps on and off according to surrounding press the button on the end of the 2 : Turns on the headlamps traffic conditions. turn signal lever when the exterior together with the parking lamps, lamp control is in the AUTO or 2 The system turns the high-beam taillamps, instrument panel lights, position. The blue high-beam on headlamps on when it is dark roof marker lamps (if equipped), light appears on the instrument enough and there is no other traffic front/rear sidemarker lamps, and cluster when the high beams are on. license plate lamps. present. Driving with IntelliBeam When the headlamps are turned on This light b comes on in the while the vehicle is on, the instrument cluster when the The system only activates the high headlamps turn off automatically IntelliBeam system is enabled. beams when driving over 40 km/h 10 minutes after the ignition is (25 mph). turned off. When the headlamps are There is a sensor near the top turned on while the vehicle is off, center of the windshield that the headlamps will stay on for automatically controls the system. 10 minutes before turning off to prevent the battery from being GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

178 Lighting Keep this area of the windshield See Headlamp High/Low-Beam . The vehicle is loaded such that clear of debris to allow for best Changer 0 178 and the front end points upward, system performance. Flash-to-Pass 0 179. causing the light sensor to aim The high-beam headlamps remain The high beams may not turn off high and not detect headlamps on, under the automatic control, automatically if the system cannot and taillamps. until one of the following situations detect another vehicle's lamps . Driving on winding or hilly roads. occurs: because of any of the following: The automatic high-beam . The system detects an . The other vehicle's lamps are headlamps may need to be disabled approaching vehicle's missing, damaged, obstructed if any of the above conditions exist. headlamps. from view, or otherwise . The system detects a preceding undetected. Exterior Lamps Off vehicle's taillamps. . The other vehicle's lamps are Reminder covered with dirt, snow, and/or . The outside light is bright A reminder chime sounds when the road spray. enough that high-beam headlamps or parking lamps are headlamps are not required. . The other vehicle's lamps cannot manually turned on, the ignition is . The vehicle's speed drops below be detected due to dense off, and a door is open. To disable 20 km/h (12 mph). exhaust, smoke, fog, snow, road the chime, turn the lamps off. spray, mist, or other airborne . The IntelliBeam system is obstructions. Headlamp High/ disabled by the button on the turn signal lever. If this happens, . The vehicle's windshield is dirty, Low-Beam Changer cracked, or obstructed by press the button on the end of Push the turn signal lever toward the turn signal lever when the something that blocks the view of the light sensor. the instrument panel to change the exterior lamp control is in the headlamps from low to high beam. 2 AUTO or position. The Pull or push the turn signal lever to instrument cluster light will come return to low-beam headlamps. on to indicate the IntelliBeam is reactivated. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Lighting 179 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: driver in front of you that you want When the exterior lamp control is to pass. It works even if the . The ignition is on. set to AUTO and it is dark enough headlamps are in the automatic outside, the headlamps come on . The exterior lamp control is automatically. position. in AUTO. To use it, pull the turn signal lever . The transmission is not in toward you, then release it. P (Park). If the headlamps are in the . The light sensor determines it is automatic position or on low beam, daytime. the high-beam headlamps will turn on. Depending on the type of When the DRL system is on, only headlamp, they will either turn off the DRL are on. The taillamps, after a short duration or stay on as sidemarker lamps, instrument panel long as you hold the lever toward lights, and other lamps will not you. The high-beam indicator on the be on. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

180 Lighting cluster may not be as bright as Hazard Warning Flashers usual. Make sure the instrument panel illumination control is in the full bright position. See Instrument Panel Illumination Control 0 183. When it is bright enough outside, the headlamps will turn off or may change to DRL. The automatic headlamp system turns off when the exterior lamp control is turned to O or the ignition There is a light sensor on top of the is off. instrument panel. Do not cover the Lights On with Wipers sensor, otherwise the headlamps will come on when they are not If the windshield wipers are | : Press this button to make the needed. activated in daylight with the engine front and rear turn signal lamps on, and the exterior lamp control is The system may also turn on the flash on and off. Press again to turn in AUTO, the headlamps, parking the flashers off. headlamps when driving through a lamps, and other exterior lamps parking garage or tunnel. come on. The transition time for the When the hazard warning flashers If the vehicle is started in a dark lamps coming on varies based on are on, the vehicle's turn signals will garage, the automatic headlamp wiper speed. When the wipers are not work. system comes on immediately. If it not operating, these lamps turn off. is light outside when the vehicle Move the exterior lamp control to O leaves the garage, there is a slight or ; to disable this feature. delay before the automatic headlamp system changes to the Daytime Running Lamps (DRL). During that delay, the instrument GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

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 0 350.

An arrow on the instrument cluster Turn Signal On Chime flashes in the direction of the turn or If the turn signal is left on for more lane change. than 1.2 km (0.75 mi), a chime If equipped, the fog lamp control is Move the turn signal lever all the sounds at each flash of the turn near the exterior lamp control to the way up or down to signal a turn. signal. A message may appear in left of the steering column. the Driver Information Center (DIC). The ignition must be on for the fog Partially raise or lower the lever for See Vehicle Messages 0 166. To lamps to come on. less than one second until the arrow turn the chime and message off, starts to flash to signal a lane move the turn signal lever to the off # : Press to turn the fog lamps on change. This causes the turn position. or off. A light will come on in the signals to automatically flash three instrument cluster. times. It will flash six times if Tow/ When the fog lamps are turned on, Haul Mode is active. Holding the the parking lamps automatically turn signal lever for more than turn on. one second will cause the turn signals to flash until the lever is released. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

182 Lighting When the headlamps are changed While the vehicle is parked, Exterior Cargo Lamps to high beam, the fog lamps also go press K to select one of the off. When the high-beam headlamps following options: are turned off, the fog lamps will come on again. . Left and Right Task Lights Illuminated Some localities have laws that require the headlamps to be on with . Left Task Light Illuminated the fog lamps. . Right Task Light Illuminated Task Lighting . Left and Right Task Lights Off If the vehicle leaves a parked position, the lights will immediately turn off. If the vehicle is off, the lights will stay on for approximately The cargo lamps provide more light 10 minutes. in the cargo area or on the sides of the vehicle, if needed. The lamps inside the pickup box, in the tailgate handle, for the hitch, and/or the cargo mirror lamps also turn on, if equipped. Press the button once to turn on the cargo lamps and cargo mirror If equipped, task lighting projects lamps. An indicator light will come light from the outside mirrors to the on when the lamps are turned on, sides of the vehicle. if equipped. The shift lever must be in P (Park), R (Reverse), or N (Neutral) to operate the cargo lamps and cargo mirror lamps. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Lighting 183 Press the button again within Interior Lighting Dome Lamps five seconds to turn the cargo mirror lamps off. The cargo lamps will remain on. Instrument Panel Press the button again to turn off all Illumination Control the cargo lamps. Become familiar with and follow all state and local laws that apply to cargo lamp operation.

The dome lamp controls are in the overhead console. To operate, press the following This feature controls the brightness buttons: of the steering wheel and instrument j OFF : Press to turn off the panel lights. The instrument panel dome lamps when a door is open. illumination control is next to the An indicator light on the button will exterior lamp control. turn on when the dome lamp D : Press D + to brighten or D − override is activated. Press j to dim the lights. OFF again to deactivate this feature and the indicator light will turn off. The dome lamps will come on when doors are opened. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

184 Lighting + ON/OFF : Press to turn the dome Lighting Features lamps on manually. Press again to turn the dome lamps off. Entry Lighting Reading Lamps Some exterior lamps and the interior lamps turn on briefly at night, or in There are reading lamps on the overhead console and over the rear areas with limited lighting, when K seats. These lamps come on when is pressed on the Remote Keyless Entry (RKE) transmitter. When a any door is opened. Rear Reading Lamps door is opened, the interior lamps The rear reading lamps are over the come on. After about 30 seconds rear seats. the exterior lamps turn off. Entry Press the lamp lens to turn the rear lighting can be disabled manually by reading lamps on or off. changing the ignition out of the OFF position, or by pressing the RKE transmitter Q button. This feature can be changed. See “Vehicle Locator Lights” under Vehicle Personalization 0 167. Exit Lighting Front Reading Lamps Some exterior lamps and interior The front reading lamps are in the lights come on at night, or in areas overhead console. with limited lighting, when the driver Press the lamp lenses to turn the door is opened after the ignition is front reading lamps on or off. turned off. The dome lamp comes on after the ignition is turned off. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Lighting 185 The exterior lamps and dome lamp moving up or down. This is normal. Normally, these actions occur in remain on for a set amount of time, If there is a problem, an alert will be steps or levels, without being then automatically turn off. displayed. noticeable. In rare cases at the The exterior lamps turn off The battery can be discharged at highest levels of corrective action, immediately by turning the exterior idle if the electrical loads are very this action may be noticeable to the lamp control off. high. This is true for all vehicles. driver. If so, a DIC message might This is because the generator be displayed and it is recommended This feature can be changed. See that the driver reduce the electrical Vehicle Personalization 0 167. (alternator) may not be spinning fast enough at idle to produce all the loads as much as possible. power that is needed for very high Battery Load electrical loads. Battery Power Protection Management A high electrical load occurs when This feature shuts off the dome and The vehicle has Electric Power several of the following are on, such reading lamps, if they are left on for Management (EPM), which as: headlamps, high beams, fog more than 10 minutes after the estimates the battery's temperature lamps, rear window defogger, ignition is turned off. The cargo and state of charge. It then adjusts climate control fan at high speed, lamp shuts off after 20 minutes. This the voltage for best performance heated seats, engine cooling fans, prevents the battery from and extended life of the battery. trailer loads, and loads plugged into running down. When the battery's state of charge accessory power outlets. is low, the voltage is raised slightly EPM works to prevent excessive Exterior Lighting Battery to quickly bring the charge back up. discharge of the battery. It does this Saver When the state of charge is high, by balancing the generator's output The exterior lamps turn off about the voltage is lowered slightly to and the vehicle's electrical needs. 10 minutes after the ignition is prevent overcharging. The voltmeter It can increase engine idle speed to turned off, if the parking lamps or gauge or the voltage display on the generate more power, whenever headlamps have been manually left Driver Information Center (DIC), needed. It can temporarily reduce on. This protects against draining if equipped, may show the voltage 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-1500-11698638) - 2019 - crc - 5/15/18

186 Lighting timer, turn the exterior lamp control to the O position and then back to the ; or 2 position. To keep the lamps on for more than 10 minutes, the ignition must be on or in ACC/ACCESSORY. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Infotainment System 187 Infotainment Introduction System Infotainment See the infotainment manual for Introduction information on the radio, audio Infotainment ...... 187 players, phone, navigation system, and voice or speech recognition. It also includes information on settings. Active Noise Cancellation (ANC) If equipped, ANC reduces engine noise in the vehicle’s interior. ANC requires the factory-installed audio system, radio, speakers, amplifier (if equipped), induction system, and exhaust system to work properly. Deactivation is required by your dealer if related aftermarket equipment is installed. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

188 Climate Controls Climate Controls Climate Control Systems

The heating, cooling, and ventilation in the vehicle can be controlled with this Climate Control Systems system. Climate Control Systems . . . . . 188 Dual Automatic Climate Control System ...... 190 Air Vents Air Vents ...... 194 Maintenance Passenger Compartment Air Filter ...... 194 Service ...... 195

1. Fan Control 9 : Turn clockwise or 2. MAX Defrost counterclockwise to increase or decrease the fan speed. Turn the 3. Air Delivery Mode Controls knob all the way counterclockwise 4. A/C (Air Conditioning) to turn the fan off. 5. TEMP (Temperature Control) TEMP : Turn clockwise or counterclockwise to increase or 6. Recirculation decrease the temperature inside the 7. Rear Window Defogger (If vehicle. Equipped) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/18/18

Climate Controls 189 Air Delivery Mode Controls : the control is pressed again, the conditioning is enabled. If the fan is Press z, Y, or [ to change the system returns to the previous mode turned off, the air conditioner will not direction of the airflow. Any setting and fan speed. run. The A/C light will stay on even combination of the three controls For best results, clear all snow and if the outside temperatures are can be selected. An indicator light ice from the windshield before below freezing. comes on in the selected mode defrosting. Rear Window Defogger button. @ : Press to turn on recirculation. 1 REAR : If equipped, press to To change the current mode, select An indicator light comes on. Air is turn the rear window defogger on or one or more of the following. An recirculated to quickly cool the off. An indicator light on the button indicator light will illuminate: inside of the vehicle. It can also be comes on to show that the rear z : Air is directed to the used to help reduce outside air and window defogger is on. odors that enter the vehicle. The windshield, outboard a/c outlets, The rear window defogger only and side window outlets. indicator light will also go on and off when the system automatically goes works when the engine is running. Y : Air is directed to the a/c outlets. into and out of recirculation mode to The defogger turns off if the ignition is turned off or to ACC/ [ : Air is directed to the floor operate more efficiently. ACCESSORY. outlets, with some air directed to the Avoid using recirculation for long windshield, outboard a/c outlets, periods of time in cold or damp If equipped with heated outside and side window outlets. conditions. Using recirculation in mirrors, press 1 REAR to turn 0 MAX : Air is directed to the cold or damp conditions can result them on or off. See Heated Mirrors windshield and the fan runs at a in window fogging. 0 58. higher speed if not already above a A/C : Press to turn the air medium fan speed. This mode conditioning on or off. An indicator Caution overrides the previous mode light comes on to show that the air selected and clears fog or frost from Using a razor blade or sharp the windshield more quickly. When object to clear the inside rear window can damage the rear (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

190 Climate Controls

Caution (Continued) Dual Automatic Climate Control System The heating, cooling, and ventilation in the vehicle can be controlled with this window defogger. Repairs would system. not be covered by the vehicle warranty. Do not clear the inside rear window with sharp objects.

1. Driver and Passenger 8. Fan Control Temperature Controls 9. Rear Window Defogger (If 2. MAX Defrost Equipped) 3. Air Delivery Mode Controls 10. AUTO (Automatic Operation) 4. A/C (Air Conditioning) 5. SYNC (Synchronized Temperature) 6. Recirculation 7. Power Button GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Climate Controls 191 Climate Control Display The fan, air delivery mode, air Automatic Operation conditioning, driver and passenger The system automatically controls temperatures, and Sync settings the fan speed, air delivery, air can be controlled by touching conditioning, and recirculation in CLIMATE on the infotainment Home order to heat or cool the vehicle to Page or the climate button in the the desired temperature. climate control display application tray. A selection can then be made When AUTO is lit, all four functions on the front climate control page operate automatically. Each function displayed. See the infotainment can also be manually set and the manual. selected setting is displayed. Functions not manually set will Climate Control Status Display continue to be automatically controlled, even if the AUTO indicator is not lit. 1. Driver and Passenger Temperature Settings For automatic operation: 2. Fan Control 1. Press AUTO. 3. Driver and Passenger 2. Set the temperature. Allow the Temperature Controls system time to stabilize. Adjust the temperature as needed for 4. Sync (Synchronized best comfort. Temperature) To improve fuel efficiency and to 5. Recirculation cool the vehicle faster, recirculation 6. Air Delivery Mode Controls may be automatically selected in warm weather. 7. Auto (Automatic Operation) The climate control status display 8. A/C (Air Conditioning) appears briefly when the center stack climate controls are adjusted. 9. On/Off (Power) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/18/18

192 Climate Controls The recirculation light will not come or passenger side temperature [ : Air is directed to the floor on when automatically controlled. display shows the temperature outlets, with some air directed to the See @ under “Manual Operation” setting increasing or decreasing. windshield, outboard a/c outlets, for more details. SYNC : Press to link the passenger and side window outlets. Manual Operation temperature setting to the driver 0 MAX : Air is directed to the setting. The SYNC indicator light will windshield and the fan runs at a 9 : Turn clockwise or turn on. When the passenger setting higher speed if not already above a counterclockwise to increase or is adjusted, the SYNC indicator light medium fan speed. This mode decrease the fan speed. Press the will turn off. overrides the previous mode knob to turn the fan off. When off is Air Delivery Mode Control : Press selected and clears fog or frost from selected, a small amount of air may z, Y, or [ to change the the windshield more quickly. When still come out of the outlets direction of the airflow. Any the control is pressed again, the depending on vehicle speed. If any combination of the three controls system returns to the previous mode buttons are pressed or knobs are can be selected. An indicator light setting and fan speed. turned, the climate control system comes on in the selected mode will turn on and operate at the For best results, clear all snow and button. current setting. ice from the windshield before Changing the mode cancels the defrosting. Press AUTO to return to automatic automatic operation and the system operation. @ : Press to turn on recirculation. goes into manual mode. Press An indicator light comes on. Air is Driver and Passenger AUTO to return to automatic recirculated to quickly cool the Temperature Control : The operation. inside of the vehicle. It can also be temperature can be adjusted To change the current mode, select used to help reduce outside air and separately for the driver and one or more of the following: odors that enter the vehicle. passenger. z : Air is directed to the Turn the knob clockwise or windshield, outboard a/c outlets, counterclockwise to increase or and side window outlets. decrease the driver or passenger temperature setting. The driver side Y : Air is directed to the a/c outlets. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/18/18

Climate Controls 193 Avoid using recirculation for long If equipped with heated outside Sensors periods of time in cold or damp mirrors, press 1 REAR to turn conditions. Using recirculation in them on or off. See Heated Mirrors cold or damp conditions can result 0 58. in window fogging. A/C : Press to turn the air Caution conditioning on or off. An indicator light comes on to show that the air Using a razor blade or sharp conditioning is enabled. If the fan is object to clear the inside rear turned off, the air conditioner will not window can damage the rear run. The A/C light will stay on even window defogger. Repairs would if the outside temperatures are not be covered by the vehicle The solar sensor, on top of the below freezing. warranty. Do not clear the inside instrument panel near the windshield, monitors the solar heat. Rear Window Defogger rear window with sharp objects. The climate control system uses the 1 REAR : If equipped, press to sensor information to adjust the Remote Start Climate Control turn the rear window defogger on or temperature, fan speed, Operation : If equipped with remote off. An indicator light on the button recirculation, and air delivery mode start, the climate control system comes on to show that the rear for best comfort. window defogger is on. may run when the vehicle is started remotely. If equipped with heated or Do not cover the sensor; otherwise The rear window defogger only ventilated seats or a heated steering the automatic climate control system works when the engine is running. wheel, these features may come on may not work properly. The defogger turns off if the ignition during a remote start. See Remote is turned off or to ACC/ Vehicle Start 0 43, Heated and ACCESSORY. Ventilated Front Seats 0 75, and Heated Steering Wheel 0 131. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

194 Climate Controls Air Vents . Keep the path under the front Maintenance seats clear of objects to help Use the sliding knobs on the center circulate the air inside of the and side air vents to change the vehicle more effectively. Passenger Compartment direction of the airflow. . Use of non-GM approved hood Air Filter Air vents blow warm air on the side deflectors can adversely affect The filter reduces the dust, pollen, windows in cold weather. If Floor, the performance of the system. and other airborne irritants from Defog, or Defrost modes are Check with your dealer before outside air that is pulled into the selected, a small amount of air will adding equipment to the outside vehicle. come from the vents close to the of the vehicle. The filter should be replaced as part window. of routine scheduled maintenance. To close the front a/c vents, move See Maintenance Schedule 0 415. the sliding knobs to the full down To find out what type of filter to use, position. see Maintenance Replacement 0 To close the rear a/c vents, move Parts 427. the sliding knobs to the full inboard position. Operation Tips . Clear away any ice, snow, or leaves from air inlets at the base of the windshield that could block the flow of air into the vehicle. . Clear snow off the hood to improve visibility and help decrease moisture drawn into the vehicle. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Climate Controls 195 1. Open the lower glove box door Service completely. 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. 3. Pull lever on left side of the filter door and slide left, then During service, all refrigerants remove the door. Remove the should be reclaimed with proper equipment. Venting refrigerants 2. Press the sides of the glove old filter. directly to the atmosphere is harmful box door inward and rotate the 4. Install the new air filter. to the environment and may also door downward to remove. 5. Reinstall the filter door. create unsafe conditions based on inhalation, combustion, frostbite, 6. Reverse the steps to reinstall or other health-based concerns. the glove box. The air conditioning system requires See your dealer if additional periodic maintenance. See assistance is needed. Maintenance Schedule 0 415. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

196 Driving and Operating Stop/Start System ...... 222 Ride Control Systems Driving and Engine Heater ...... 223 Traction Control/Electronic Operating Retained Accessory Stability Control ...... 243 Power (RAP) ...... 225 Hill Descent Control (HDC) . . . 245 Shifting Into Park ...... 225 Driver Mode Control ...... 246 Driving Information Shifting out of Park ...... 227 Limited-Slip Differential ...... 250 Distracted Driving ...... 197 Parking over Things Locking Rear Axle ...... 250 Defensive Driving ...... 198 That Burn ...... 227 Active Fuel Management . . . . . 227 Cruise Control Drunk Driving ...... 198 Cruise Control ...... 250 Control of a Vehicle ...... 198 Extended Parking ...... 228 Braking ...... 198 Engine Exhaust Driver Assistance Systems Steering ...... 199 Engine Exhaust ...... 228 Driver Assistance Systems . . . 253 Off-Road Recovery ...... 199 Running the Vehicle While Assistance Systems for Loss of Control ...... 200 Parked ...... 229 Parking or Backing ...... 254 Off-Road Driving ...... 200 Assistance Systems for Driving on Wet Roads ...... 205 Automatic Transmission Driving ...... 260 Hill and Mountain Roads . . . . . 206 Automatic Transmission ...... 229 Forward Collision Alert (FCA) Winter Driving ...... 206 Manual Mode ...... 232 System ...... 260 If the Vehicle Is Stuck ...... 208 Tow/Haul Mode ...... 234 Forward Automatic Vehicle Load Limits ...... 209 Braking (FAB) ...... 263 Truck-Camper Loading Drive Systems Front Pedestrian Braking Information ...... 214 Four-Wheel Drive ...... 235 (FPB) System ...... 264 Starting and Operating Brakes Side Blind Zone Alert (SBZA) ...... 267 New Vehicle Break-In ...... 216 Antilock Brake System (ABS) ...... 240 Lane Change Alert (LCA) . . . . . 267 Ignition Positions (Key Lane Departure Access) ...... 217 Electric Parking Brake ...... 241 Brake Assist ...... 242 Warning (LDW) ...... 269 Ignition Positions (Keyless Lane Keep Assist (LKA) ...... 269 Access) ...... 219 Hill Start Assist (HSA) ...... 242 Starting the Engine ...... 221 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 197 Fuel Driving Information . Designate a front seat Top Tier Fuel ...... 271 passenger to handle potential Recommended Fuel (Except Distracted Driving distractions. 6.2L V8 Engine) ...... 271 . Become familiar with vehicle Recommended Fuel (6.2L Distraction comes in many forms features before driving, such as V8 Engine) ...... 271 and can take your focus from the programming favorite radio Prohibited Fuels ...... 272 task of driving. Exercise good stations and adjusting climate Fuels in Foreign Countries . . . 272 judgment and do not let other control and seat settings. Fuel Additives ...... 272 activities divert your attention away Program all trip information into E85 or FlexFuel ...... 272 from the road. Many local any navigation device prior to Filling the Tank ...... 273 governments have enacted laws driving. Filling a Portable Fuel regarding driver distraction. Become Container ...... 275 familiar with the local laws in . Wait until the vehicle is parked your area. to retrieve items that have fallen Trailer Towing to the floor. General Towing To avoid distracted driving, keep Information ...... 276 your eyes on the road, keep your . Stop or park the vehicle to tend Driving Characteristics and hands on the steering wheel, and to children. Towing Tips ...... 276 focus your attention on driving. . Keep pets in an appropriate Trailer Towing ...... 281 . Do not use a phone in carrier or restraint. Towing Equipment ...... 285 demanding driving situations. . Avoid stressful conversations Trailer Sway Control (TSC) . . . 293 Use a hands-free method to Trailering App ...... 296 while driving, whether with a place or receive necessary passenger or on a cell phone. Conversions and Add-Ons phone calls. Add-On Electrical . Watch the road. Do not read, Equipment ...... 306 take notes, or look up Adding a Snow Plow or Similar information on phones or other Equipment ...... 307 electronic devices. Pickup Conversion to Chassis Cab ...... 310 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

198 Driving and Operating . Focus on the task of driving. Braking { Warning Drunk Driving Braking action involves perception Taking your eyes off the road too time and reaction time. Deciding to long or too often could cause a Death and injury associated with push the brake pedal is perception crash resulting in injury or death. drinking and driving is a global time. Actually doing it is Focus your attention on driving. tragedy. reaction time. Average driver reaction time is Refer to the infotainment section for { Warning about three-quarters of a second. In more information on using that that time, a vehicle moving at Drinking and then driving is very system and the navigation system, 100 km/h (60 mph) 20 m dangerous. Your reflexes, if equipped, including pairing and (66 ft), which could be a lot of using a cell phone. perceptions, attentiveness, and distance in an emergency. judgment can be affected by even a small amount of alcohol. You Helpful braking tips to keep in mind Defensive Driving include: can have a serious — or even Defensive driving means “always fatal — collision if you drive after . Keep enough distance between expect the unexpected.” The first drinking. you and the vehicle in front step in driving defensively is to wear of you. the seat belt. See Seat Belts 0 79. Do not drink and drive or ride with a driver who has been drinking. . Avoid needless heavy braking. . Assume that other road users Ride home in a cab; or if you are . Keep pace with traffic. (pedestrians, bicyclists, and with a group, designate a driver If the engine ever stops or a brake other drivers) are going to be who will not drink. careless and make mistakes. fault occurs, the brakes may lose Anticipate what they might do power assist. More effort will be and be ready. Control of a Vehicle required to stop the vehicle. It may take longer to stop. . Allow enough following distance Braking, steering, and accelerating between you and the driver in are important factors in helping to front of you. control a vehicle while driving. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 199 Steering Curve Tips Off-Road Recovery Electric . Take curves at a reasonable speed. This vehicle has electric power steering. It does not have power . Reduce speed before entering a steering fluid. Regular maintenance curve. is not required. . Maintain a reasonable steady If power steering assist is lost due speed through the curve. to a system malfunction, the vehicle . Wait until the vehicle is out of can be steered, but may require the curve before accelerating increased effort. gently into the straightaway. See your dealer if there is a Steering in Emergencies problem. . There are some situations when If the steering assist is used for an steering around a problem may The vehicle's right wheels can drop extended period of time while the be more effective than braking. off the edge of a road onto the vehicle is not moving, power assist shoulder while driving. Follow may be reduced. . Holding both sides of the steering wheel allows you to turn these tips: If the steering wheel is turned until it 180 degrees without removing 1. Ease off the accelerator and reaches the end of its travel, and is a hand. then, if there is nothing in the held in that position for an extended way, steer the vehicle so that it period of time, power steering assist . Antilock Brake System (ABS) allows steering while braking. straddles the edge of the may be reduced. pavement. Normal use of the power steering 2. Turn the steering wheel about assist should return when the one-eighth of a turn, until the system cools down. right front tire contacts the See your dealer if there is a pavement edge. problem. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

200 Driving and Operating 3. Turn the steering wheel to go . Ease your foot off the Off-Road Driving straight down the roadway. accelerator pedal and steer the way you want the vehicle to go. Four-wheel-drive vehicles can be Loss of Control The vehicle may straighten out. used for off-road driving. Vehicles Be ready for a second skid if it without four-wheel drive and Skidding occurs. vehicles not equipped with All Terrain (AT) or On-Off Road (OOR) There are three types of skids that . Slow down and adjust your tires must not be driven off-road correspond to the vehicle's three driving according to weather except on a level, solid surface. For control systems: conditions. Stopping distance contact information about the . Braking Skid — wheels are not can be longer and vehicle original equipment tires, see the rolling. control can be affected when warranty manual. traction is reduced by water, . Steering or Cornering Skid — snow, ice, gravel, or other One of the best ways for successful too much speed or steering in a material on the road. Learn to off-road driving is to control the curve causes tires to slip and recognize warning clues — such speed. lose cornering force. as enough water, ice, or packed . Acceleration Skid — too much snow on the road to make a { Warning causes the driving mirrored surface — and slow wheels to spin. down when you have any doubt. When driving off-road, bouncing and quick changes in direction . Try to avoid sudden steering, Defensive drivers avoid most skids can easily throw you out of acceleration, or braking, by taking reasonable care suited to position. This could cause you to including reducing vehicle speed existing conditions, and by not lose control and crash. You and overdriving those conditions. But by shifting to a lower gear. Any your passengers should always skids are always possible. sudden changes could cause the tires to slide. wear seat belts. If the vehicle starts to slide, follow these suggestions: Remember: Antilock brakes help avoid only the braking skid. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 201 Before Driving Off-Road Caution Warning (Continued) . Have all necessary maintenance and service work completed. Operating the vehicle for heaviest things should be . Fuel the vehicle, fill fluid levels, extended periods without the front on the floor, forward of the and check inflation pressure in fascia lower air dam installed can rear axle. all tires, including the spare, cause improper airflow to the . Heavy loads on the roof if equipped. engine. Reattach the front fascia raise the vehicle's center of air dam after off-road driving. . Read all the information about gravity, making it more likely four-wheel-drive vehicles in this to roll over. You can be manual. Loading the Vehicle for seriously or fatally injured if the vehicle rolls over. Put . Remove any underbody air Off-Road Driving heavy loads inside the deflector, if equipped. Re-attach cargo area, not on the roof. the air deflector after off-road { Warning driving. . Unsecured cargo on the For more information about loading . Know the local laws that apply to load floor can be tossed the vehicle, see Vehicle Load Limits off-road driving. about when driving over 0 209 and Tires 0 358. To gain more ground clearance if rough terrain. You or your Environmental Concerns needed, it may be necessary to passengers can be struck remove the front fascia lower air by flying objects. Secure the . Always use established trails, dam, if equipped. However, driving cargo properly. roads, and areas that have been set aside for public off-road without the air dam reduces fuel . Keep cargo in the cargo recreational driving and obey all economy. area as far forward and as posted regulations. low as possible. The (Continued) . Do not damage shrubs, flowers, trees, or grasses or disturb wildlife. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

202 Driving and Operating . Do not park over things that When driving on hills: N (Neutral). The brakes could burn. See Parking over Things overheat and you could lose 0 . Use a low gear and keep a firm That Burn 227. grip on the steering wheel. control. Driving on Hills . Maintain a slow speed. { Warning Driving safely on hills requires good . When possible, drive straight up judgment and an understanding of or down the hill. If the vehicle has the two-speed what the vehicle can and cannot do. automatic transfer case, shifting . Slow down when approaching the transfer case to N (Neutral) the top of the hill. { Warning can cause your vehicle to roll . Use headlamps even during the even if the transmission is in Many hills are simply too steep day to make the vehicle more P (Park). This is because the for any vehicle. Driving up hills visible. N (Neutral) position on the can cause the vehicle to stall. transfer case overrides the Driving down hills can cause loss { Warning transmission. You or someone of control. Driving across hills can else could be injured. If leaving cause a rollover. You could be Driving to the top of a hill at high the vehicle, set the parking brake injured or killed. Do not drive on speed can cause a crash. There and shift the transmission to steep hills. could be a drop-off, embankment, P (Park). Shift the transfer case to cliff, or even another vehicle. You any position but N (Neutral). could be seriously injured or Before driving on a hill, assess the killed. As you near the top of a steepness, traction, and hill, slow down and stay alert. . When driving down a hill, keep obstructions. If the terrain ahead the vehicle headed straight cannot be seen, get out of the down. Use a low gear because vehicle and walk the hill before . Never go downhill forward or the engine will work with the driving further. backward with either the brakes to slow the vehicle and transmission or transfer case in help keep the vehicle under control. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/23/18

Driving and Operating 203 If the vehicle stalls on a hill: . If driving downhill when the { Warning 1. Apply the brakes to stop the vehicle stalls, shift to a lower gear, release the Heavy braking when going down vehicle, and then apply the parking brake. parking brake, and drive a hill can cause your brakes to straight down the hill. overheat and fade. This could 2. Shift into P (Park) and then cause loss of control and you or restart the engine. 3. If the vehicle cannot be others could be injured or killed. restarted after stalling, set the . If driving uphill when the Apply the brakes lightly when parking brake, shift into vehicle stalls, shift to P (Park), and turn the descending a hill and use a low R (Reverse), release the vehicle off. gear to keep vehicle speed under parking brake, and back control. straight down. 3.1. Leave the vehicle and seek help. . Never try to turn the vehicle If a brake fade condition is detected, around. If the hill is steep 3.2. Stay clear of the path the a DIC warning message is enough to stall the vehicle, vehicle would take if it displayed. Adjust brake pedal use it is steep enough to cause rolled downhill. and shift to a lower transmission it to roll over. . Avoid turns that take the vehicle gear to reduce braking. . If you cannot make it up the across the incline of the hill. If the brakes continue to fade to a hill, back straight down A hill that can be driven straight severe condition, additional DIC the hill. up or down might be too steep to warning messages are displayed. drive across. Driving across an The brake system warning light will . Never back down a hill in incline puts more weight on the illuminate, and the vehicle speed N (Neutral) using only the downhill wheels, which could may be limited. See Brake System brake. The vehicle can roll cause a downhill slide or a Warning Light 0 151. backward quickly and you rollover. could lose control. . Surface conditions can be a problem. Loose gravel, muddy spots, or even wet grass can cause the tires to slip sideways, GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

204 Driving and Operating downhill. If the vehicle slips Driving in Mud, Sand, Snow, sideways, it can hit something or Ice Warning (Continued) that will trip it — a rock, a rut, Use a low gear when driving in you and your passengers could etc. — and roll over. mud — the deeper the mud, the drown. Drive your vehicle on safe . Hidden obstacles can make the lower the gear. Keep the vehicle surfaces only. steepness of the incline more moving to avoid getting stuck. severe. If a rock is driven across with the uphill wheels, or if the Traction changes when driving on Driving in Water downhill wheels drop into a rut sand. On loose sand, such as on or depression, the vehicle can tilt beaches or sand dunes, the tires { Warning even more. tend to sink into the sand. This affects steering, accelerating, and Driving through rushing water can . If an incline must be driven braking. Drive at a reduced speed across, and the vehicle starts to be dangerous. Deep water can and avoid sharp turns or abrupt sweep your vehicle downstream slide, turn downhill. This should maneuvers. help straighten out the vehicle and you and your passengers and prevent the side slipping. Traction is reduced on hard packed could drown. If it is only shallow snow and ice and it is easy to lose water, it can still wash away the control. Reduce vehicle speed when { Warning ground from under your tires. driving on hard packed snow Traction could be lost, and the and ice. Getting out of the vehicle on the vehicle could roll over. Do not downhill side when stopped drive through rushing water. across an incline is dangerous. { Warning If the vehicle rolls over, you could Driving on frozen lakes, ponds, be crushed or killed. Always get or rivers can be dangerous. Ice out on the uphill side of the conditions vary greatly and the vehicle and stay well clear of the vehicle could fall through the ice; rollover path. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 205 After operation in mud or sand, Caution have the brake linings cleaned and { Warning checked. These substances can Do not drive through standing cause glazing and uneven braking. Wet brakes can cause crashes. water if it is deep enough to cover Check the body structure, driveline, They might not work as well in a the wheel hubs, axles, or exhaust steering, suspension, wheels, tires, quick stop and could cause pipe. Deep water can damage the and exhaust system for damage and pulling to one side. You could axle and other vehicle parts. check the fuel lines and cooling lose control of the vehicle. system for any leakage. After driving through a large If the standing water is not too deep, More frequent maintenance service puddle of water or a car/vehicle drive through it slowly. At faster is required. See the Maintenance wash, lightly apply the brake speeds, water can get into the Schedule 0 415. pedal until the brakes work engine and cause it to stall. Stalling normally. can occur if the exhaust pipe is Driving on Wet Roads under water. Do not turn off the Flowing or rushing water creates ignition when driving through water. Rain and wet roads can reduce strong forces. Driving through If the exhaust pipe is under water, vehicle traction and affect your flowing water could cause the the engine will not start. When going ability to stop and accelerate. vehicle to be carried away. If this through water, the brakes get wet Always drive slower in these types happens, you and other vehicle and it may take longer to stop. See of driving conditions and avoid occupants could drown. Do not “Driving on Wet Roads” later in this driving through large puddles and ignore police warnings and be section. deep-standing or flowing water. very cautious about trying to drive through flowing water. After Off-Road Driving Remove any brush or debris that has collected on the underbody or Hydroplaning chassis, or under the hood. These Hydroplaning is dangerous. Water accumulations can be a fire hazard. can build up under the vehicle's Re-install underbody air deflector tires so they actually ride on the and air dam if removed. water. This can happen if the road is GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

206 Driving and Operating wet enough and you are going fast . Keep the vehicle serviced and in enough. When the vehicle is good shape. Warning (Continued) hydroplaning, it has little or no . Check all fluid levels and brakes, contact with the road. loss of steering assist. Always tires, cooling system, and have the engine running and the There is no hard and fast rule about transmission. vehicle in gear. hydroplaning. The best advice is to . Shift to a lower gear when going slow down when the road is wet. down steep or long hills. . Drive at speeds that keep the Other Rainy Weather Tips vehicle in its own lane. Do not Besides slowing down, other wet { Warning swing wide or cross the center line. weather driving tips include: Using the brakes to slow the . Allow extra following distance. vehicle on a long downhill slope . Be alert on top of hills; can cause brake overheating, can something could be in your lane . Pass with caution. (e.g., stalled car, crash). reduce brake performance, and . Keep windshield wiping could result in a loss of braking. . Pay attention to special road equipment in good shape. Shift the transmission to a lower signs (e.g., falling rocks area, . Keep the windshield washer fluid gear to let the engine assist the winding roads, long grades, reservoir filled. brakes on a steep downhill slope. passing or no-passing zones) and take appropriate action. . Have good tires with proper 0 tread depth. See Tires 358. Winter Driving . Turn off cruise control. { Warning Driving on Snow or Ice Coasting downhill in N (Neutral) Hill and Mountain Roads Snow or ice between the tires and or with the ignition off is Driving on steep hills or through the road creates less traction or dangerous. This can cause grip, so drive carefully. Wet ice can mountains is different than driving overheating of the brakes and on flat or rolling terrain. Tips include: occur at about 0 °C (32 °F) when (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 207 freezing rain begins to fall. Avoid . Turn off cruise control. driving on wet ice or in freezing rain Warning (Continued) until roads can be treated. Blizzard Conditions If the vehicle is stuck in snow: Stop the vehicle in a safe place and For Slippery Road Driving: signal for help. Stay with the vehicle . Clear snow from the base of . Accelerate gently. Accelerating unless there is help nearby. the vehicle, especially any too quickly causes the wheels to If possible, use Roadside blocking the exhaust pipe. spin and makes the surface Assistance. See Roadside . Open a window about 5 cm under the tires slick. 0 Assistance Program 437. To get (2 in) on the vehicle side . Turn on Traction Control. See help and keep everyone in the that is away from the wind, Traction Control/Electronic vehicle safe: to bring in fresh air. Stability Control 0 243. . Turn on the hazard warning . Fully open the air outlets on . The Antilock Brake System flashers. or under the instrument (ABS) improves vehicle stability . Tie a red cloth to an outside panel. during hard stops, but the mirror. . Adjust the climate control brakes should be applied sooner system to circulate the air than when on dry pavement. { Warning inside the vehicle and set See Antilock Brake System the fan speed to the highest (ABS) 0 240. Snow can trap engine exhaust setting. See “Climate . Allow greater following distance under the vehicle. This may Control Systems.” and watch for slippery spots. Icy cause exhaust gases to get inside. Engine exhaust contains For more information about CO, patches can occur on otherwise 0 clear roads in shaded areas. carbon monoxide (CO), which see Engine Exhaust 228. The surface of a curve or an cannot be seen or smelled. It can overpass can remain icy when cause unconsciousness and even To save fuel, run the engine for the surrounding roads are clear. death. short periods to warm the vehicle Avoid sudden steering (Continued) and then shut the engine off and maneuvers and braking while partially close the window. Moving on ice. about to keep warm also helps. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

208 Driving and Operating If it takes time for help to arrive, spinning before shifting gears. when running the engine, push the { Warning Slowly spinning the wheels in the accelerator pedal slightly so the forward and reverse directions engine runs faster than the idle If the vehicle's tires spin at high causes a rocking motion that could speed. This keeps the battery speed, they can explode, and you free the vehicle. If that does not get charged to restart the vehicle and to or others could be injured. The the vehicle out after a few tries, it signal for help with the headlamps. vehicle can overheat, causing an might need to be towed out. See Do this as little as possible, to engine compartment fire or other Towing the Vehicle 0 398. Recovery save fuel. damage. Spin the wheels as little hooks can be used, if the vehicle as possible and avoid going has them. above 56 km/h (35 mph). If the Vehicle Is Stuck Recovery Hooks Slowly and cautiously spin the wheels to free the vehicle when For information about using tire { Warning stuck in sand, mud, ice, or snow. chains on the vehicle, see Tire 0 See “Rocking the Vehicle to Get It Chains 382. Never pull on recovery hooks Out” later in this section. Rocking the Vehicle to Get from the side. The hooks could The Traction Control/Electronic It Out break and you and others could Stability Control can often help to be injured. When using recovery free a stuck vehicle. See Traction Turn the steering wheel left and hooks, always pull the vehicle Control/Electronic Stability Control right to clear the area around the from the front. 0 243. If TC/ESC cannot free the front wheels. Then make sure the wheels are pointed straight ahead. vehicle, see “Rocking the Vehicle to For four-wheel-drive vehicles, shift Get it Out” following. into Four-Wheel Drive High. Turn the TCS off. Shift back and forth between R (Reverse) and a forward gear, spinning the wheels as little as possible. To prevent transmission wear, wait until the wheels stop GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 209 Vehicle Load Limits Warning (Continued) It is very important to know how much weight the vehicle can cause loss of control and a carry. This weight is called the crash. Overloading can also vehicle capacity weight and reduce stopping distance, includes the weight of all damage the tires, and shorten occupants, cargo, and all the life of the vehicle. nonfactory-installed options. Two labels on the vehicle may Tire and Loading Information show how much weight it was Label designed to carry: the Tire and Caution Loading Information label and the Certification/Tire label. Never use recovery hooks to tow the vehicle. The vehicle could be { Warning damaged, and the repairs would not be covered by the vehicle Do not load the vehicle any warranty. heavier than the Gross Vehicle Weight Rating There are recovery hooks at the (GVWR), or either the front of the vehicle. Use them if the maximum front or rear Gross vehicle is stuck off-road and needs Axle Weight Rating (GAWR). to be pulled some place to continue This can cause systems to Label Example driving. break and change the way the A vehicle-specific Tire and vehicle handles. This could Loading Information label is (Continued) attached to the center pillar (B-pillar). The Tire and Loading GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

210 Driving and Operating Information label shows the “Steps for Determining Correct load capacity is 650 lbs. number of occupant seating Load Limit– (1400-750 (5 x 150) = positions (1), and the maximum 1. Locate the statement "The 650 lbs.) vehicle capacity weight (2) in combined weight of 5. Determine the combined kilograms and pounds. occupants and cargo should weight of luggage and cargo The Tire and Loading never exceed XXX kg or being loaded on the vehicle. Information label also shows the XXX lbs." on your vehicle’s That weight may not safely size of the original equipment placard. exceed the available cargo tires (3) and the recommended 2. Determine the combined and luggage load capacity cold tire inflation pressures (4). weight of the driver and calculated in Step 4. For more information on tires passengers that will be 0 6. If your vehicle will be towing and inflation see Tires 358 riding in your vehicle. a trailer, load from your and Tire Pressure 0 367. 3. Subtract the combined trailer will be transferred to There is also important loading weight of the driver and your vehicle. Consult this information on the vehicle passengers from XXX kg or manual to determine how Certification/Tire label. It may XXX lbs. this reduces the available show the Gross Vehicle Weight cargo and luggage load 4. The resulting figure equals Rating (GVWR) and the Gross capacity of your vehicle.” the available amount of Axle Weight Rating (GAWR) for See Trailer Towing 0 281 for the front and rear axles. See cargo and luggage load capacity. For example, if the important information on towing “Certification/Tire Label” later in a trailer, towing safety rules, and this section. "XXX" amount equals 1400 lbs. and there will be trailering tips. five 150 lb passengers in your vehicle, the amount of available cargo and luggage GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 211

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-1500-11698638) - 2019 - crc - 5/16/18

212 Driving and Operating 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 0 307. 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-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 213 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 200. 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-1500-11698638) - 2019 - crc - 5/16/18

214 Driving and Operating 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 load the vehicle can carry, and Maximum 1. Primary Load Points how to correctly spread out the * Equipment Weight 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 help determine the Cargo Side Boxes 113 kg per 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 slide-in camper, check the * The combined weight for all 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-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 215 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 in 1. Camper Center of can carry. It does not include the zone 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-1500-11698638) - 2019 - crc - 5/16/18

216 Driving and Operating exceed the truck's cargo weight gross axle weight ratings Starting and rating, and the camper's center (GAWR). The total axle of gravity (1) should fall within loads should not exceed the Operating the truck's recommended center vehicle's gross vehicle weight of gravity zone (2) when rating (GVWR). These ratings New Vehicle Break-In installed. are given on the Certification/ Caution Any accessories or other Tire label attached to the equipment that are added to the B-pillar. See “Certification/Tire Label under Vehicle Load The vehicle does not need an vehicle must be weighed. Then, ” elaborate break-in. But it will Limits 0 209. If weight ratings subtract this extra weight from perform better in the long run if the CWR. This extra weight may are exceeded, move or remove you follow these guidelines: shorten the center of gravity items to bring all weights below the ratings. . Keep the vehicle speed at zone of the vehicle. 88 km/h (55 mph) or less for If the slide-in camper and its See your dealer for more the first 805 km (500 mi). information on curb weights, load weighs less than the CWR, . Do not drive at any one the center of gravity zone for the cargo weights, Cargo Weight constant speed, fast or slow, vehicle may be larger. Rating, and the correct center of for the first 805 km (500 mi). gravity zone. Do not make full-throttle Secure loose items to prevent starts. Avoid downshifting to weight shifts that could affect the brake or slow the vehicle. balance of the vehicle. When the . Avoid making hard stops for truck-camper is loaded, drive to the first 322 km (200 mi) or a scale and weigh on the front so. During this time the new and on the rear wheels brake linings are not yet separately to determine axle broken in. Hard stops with loads. Individual axle loads new linings can mean should not exceed either of the (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 217 Ignition Positions (Key 0 (Stopping the Engine/LOCK/ Caution (Continued) OFF) : This position turns off the Access) vehicle. It also locks the ignition, the premature wear and earlier transmission on an automatic replacement. Follow this transmission vehicle, and the breaking-in guideline every steering column, if equipped with a time you get new brake locking steering column. linings. . Do not tow a trailer during break-in. See Trailer Towing 0 281 for the trailer towing capabilities of the vehicle and more information. Following break-in, engine speed and load can be gradually increased. 0. Stopping the Engine/LOCK/OFF 1. ACC/ACCESSORY 2. ON/RUN 3. START To turn off the vehicle: The ignition switch has four 1. Make sure that the vehicle is positions. stopped. To shift out of P (Park), with an 2. Shift to P (Park) with an automatic transmission, the ignition automatic transmission, must be ON/RUN and the brake or Neutral with a manual pedal must be applied. transmission. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

218 Driving and Operating 3. Continue to hold the brake 5. Shift to P (Park) with an pedal, then set the parking { Warning automatic transmission, brake. See Electric Parking or Neutral with a manual Brake 0 241. Turning off the vehicle while transmission. moving may cause loss of power 4. Push the key all the way in assist in the brake and steering 6. Continue to hold the brake toward the steering column, systems and disable the airbags. pedal, then set the parking then turn the key to brake. See Electric Parking While driving, turn off the vehicle 0 LOCK/OFF. only in an emergency. Brake 241. 5. Remove the key. 7. Push the key all the way in toward the steering column, 6. Release the brake pedal. In an emergency, if the vehicle then turn the ignition to cannot be pulled over and must be See your dealer if the key can be LOCK/OFF. removed in any other position. turned off while driving: 8. Remove the key. Retained Accessory Power (RAP) 1. Push the key all the way in will remain active. See Retained toward the steering column, 9. Release the brake pedal. Accessory Power (RAP) 0 225. then turn the key to ACC/ ACCESSORY. Caution A warning chime will sound when 2. Brake using firm and steady the driver door is opened and the Use the correct key, make sure it key is in the ignition. pressure. Do not pump the brakes repeatedly. This may is all the way in — or pushed all If equipped with a locking steering deplete power assist, requiring the way in toward the steering column, the steering can bind with increased brake pedal force. column when turning off the the front wheels turned off center, vehicle — and turn it only with which may prevent key rotation out 3. Shift the vehicle to N (Neutral). your hand. of LOCK/OFF. If this happens, move This can be done while the the steering wheel from right to left vehicle is moving. Continue while turning the key to ACC/ braking and steer the vehicle to 1 (ACC/ACCESSORY) : This ACCESSORY. If this does not work, a safe location. position allows features such as the infotainment system to operate then the vehicle needs service. 4. Come to a complete stop. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 219 while the vehicle is off. It also The switch stays in this position Vehicles equipped with Keyless unlocks the steering column, when the engine is running. The Access have pushbutton starting. if equipped with a locking steering transmission is also unlocked in this The Remote Keyless Entry (RKE) column. Use this position if the position on automatic transmission transmitter must be in the vehicle for vehicle must be pushed or towed. vehicles. the system to operate. If the See Retained Accessory Power 0 If the key is left in ON/RUN with the pushbutton start is not working, the (RAP) 225. engine off, the battery could drain vehicle may be near a strong radio From ON/RUN, push the key all the and the vehicle may not start. antenna signal causing interference way in toward the steering column, 3 (START) : This is the position that to the Keyless Access system. then turn the key to ACC/ starts the engine. When the engine See Remote Keyless Entry (RKE) ACCESSORY. System Operation (Keyless Access) starts, release the key. The ignition 0 If the key is left in ACC/ returns to ON/RUN for driving. 33 or Remote Keyless Entry (RKE) System Operation (Key ACCESSORY with the engine off, 0 the battery could drain and the Ignition Positions Access) 41. vehicle may not start. (Keyless Access) To shift out of P (Park), the ignition A warning chime will sound when must be on or in Service Mode, and the driver door is opened and the the brake pedal must be applied. key is in the ignition. { Warning 2 (ON/RUN) : This position can be used to operate the electrical Turning off the vehicle while accessories and to display some moving may cause loss of power instrument cluster warning and assist in the brake and steering indicator lights. This position can systems and disable the airbags. also be used for service and While driving, only shut the diagnostics, and to verify the proper vehicle off in an emergency. 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-1500-11698638) - 2019 - crc - 5/16/18

220 Driving and Operating Stopping the Engine/LOCK/ right while attempting to start the 7. Press ENGINE START/STOP OFF (No Indicator Lights) : When vehicle. If this does not work, the once to turn the ignition off. the vehicle is stopped, press vehicle needs service. 8. Release the brake pedal. ENGINE START/STOP once to turn If the vehicle must be shut off in an the engine off. If the vehicle cannot be pulled over, emergency: and must be shut off while driving, If the vehicle is in P (Park), the 1. Brake using a firm and steady press and hold ENGINE START/ ignition will turn off, and Retained pressure. Do not pump the STOP for longer than two seconds, Accessory Power (RAP) will remain brakes repeatedly. This may or press twice in five seconds. active. See Retained Accessory deplete power assist, requiring Power (RAP) 0 225. ACC/ACCESSORY (Amber increased brake pedal force. Indicator Light) : This mode allows If the vehicle is not in P (Park), the 2. Shift the vehicle to N (Neutral). some electrical accessories to be ignition will return to ACC/ This can be done while the used when the engine is off. ACCESSORY and display the vehicle is moving. After shifting With the ignition off, pressing the message SHIFT TO PARK in the to N (Neutral), firmly apply the Driver Information Center (DIC). button one time without the brake brakes and steer the vehicle to pedal applied will place the ignition When the vehicle is shifted into a safe location. P (Park), the ignition system will system in ACC/ACCESSORY. turn off. 3. Come to a complete stop. The ignition will switch from ACC/ The vehicle may have an electric 4. Hold the brake pedal down, ACCESSORY to off after steering column lock. The lock is Shift to P (Park) with an five minutes to prevent battery activated when the ignition is turned automatic transmission. The rundown. off and either front door is opened. shift lever must be in P (Park) ON/RUN/START (Green Indicator A sound may be heard as the lock to turn the ignition off. Light) : This mode is for driving and actuates or releases. The steering 5. Continue to hold the brake starting. With the ignition off, and column lock may not release with pedal down. the brake pedal applied, pressing the wheels turned off center. If this the button once will turn the ignition happens, the vehicle may not start. 6. Set the parking brake, see 0 on. Once engine cranking begins, Move the steering wheel from left to Electric Parking Brake 241. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 221 release the button. Engine cranking Starting Procedure will continue until the engine starts. Caution 1. For Key Access vehicles, turn See Starting the Engine 0 221. If you add electrical parts or the ignition key to START. Service Mode accessories, you could change When the engine starts, let go of the key. This power mode is available for the way the engine operates. Any service and diagnostics, and to resulting damage would not be For Keyless Access vehicles, verify the proper operation of the covered by the vehicle warranty. the RKE transmitter must be in malfunction indicator lamp as may See Add-On Electrical Equipment the vehicle. Press ENGINE be required for emission inspection 0 306. START/STOP with the brake purposes. With the vehicle off, and pedal applied. When the engine begins cranking, let go the brake pedal not applied, Move the shift lever to P (Park) or of the button. pressing and holding the button for N (Neutral). To restart the engine more than five seconds will place when the vehicle is already moving, The idle speed will go down as the vehicle in Service Mode. The use N (Neutral) only. the engine gets warm. Do not instruments and audio systems will race the engine immediately operate as they do when the ignition Caution after starting it. Operate the is on, but the vehicle will not be able engine and transmission gently to be driven. The engine will not Do not try to shift to P (Park) if the to allow the oil to warm up and start in Service Mode. Press the lubricate all moving parts. button again to turn the ignition off. vehicle is moving. If you do, you could damage the transmission. When the low fuel warning light Starting the Engine Shift to P (Park) only when the is on and the FUEL LEVEL vehicle is stopped. LOW message is displayed in If the vehicle has a diesel engine, the Driver Information Center see the Duramax diesel (DIC), hold the ignition switch supplement. in the START position to continue engine cranking. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

222 Driving and Operating button and accelerator. If the Caution vehicle starts briefly but then Warning (Continued) stops again, do the same thing. Cranking the engine for long This clears the extra gasoline Always shift to P (Park), and then periods of time, by returning the from the engine. Do not race turn the ignition off before exiting ignition to the START position the engine immediately after the vehicle. immediately after cranking has starting it. Operate the engine ended, can overheat and damage and transmission gently until Auto Engine Stop/Start the cranking motor, and drain the the oil warms up and lubricates battery. Wait at least 15 seconds all moving parts. When the brakes are applied and between each try, to let the the vehicle is at a complete stop, cranking motor cool down. the engine may turn off. When Stop/Start System stopped, the tachometer displays If equipped, the Stop/Start system AUTO STOP. See Tachometer 2. If the engine does not start will shut off the engine to help 0 143. When the brake pedal is after five to 10 seconds, conserve fuel. It has components released or the accelerator pedal is especially in very cold weather designed for the increased number pressed, the engine will restart. (below −18 °C or 0 °F), it could of starts. To maintain vehicle performance, be flooded with too much other conditions may cause the gasoline. Try pushing the { Warning engine to automatically restart accelerator pedal all the way to before the brake pedal is released. the floor and holding it there The automatic engine Stop/Start while holding the key in START feature causes the engine to shut Auto Stops may not occur and/or or ENGINE START/STOP for off while the vehicle is still on. Do Auto Starts may occur because: up to a maximum of not exit the vehicle before shifting . The climate control settings 15 seconds. Wait at least to P (Park). The vehicle may require the engine to be running 15 seconds between each try, restart and move unexpectedly. to cool or heat the vehicle to allow the cranking motor to interior. cool down. When the engine (Continued) starts, let go of the key or . The vehicle battery charge is low. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 223 . The vehicle battery has recently Auto Stop Disable Switch −18 °C (0 °F). Vehicles with an been disconnected. engine heater should be plugged in . Minimum vehicle speed has not at least four hours before starting. been reached since the last An internal thermostat in the Auto Stop. plug-end of the cord may exist, which will prevent engine heater . The accelerator pedal is operation at temperatures above pressed. −18 °C (0 °F). . The engine or transmission is not at the required operating { Warning temperature. Do not plug in the engine block . The outside temperature is not heater while the vehicle is parked in the required operating range. in a garage or under a carport. . The vehicle is in any gear other If equipped, the automatic engine Property damage or personal than D (Drive). Stop/Start feature can be disabled injury may result. Always park the . Tow/Haul Mode or other driver and enabled by pressing the switch vehicle in a clear open area away modes have been selected. with the h symbol. Auto Stop is from buildings or structures. . The vehicle is on a steep hill or enabled each time you start the grade. vehicle. To Use the Engine Heater . The driver door has been When h is illuminated, the system 1. Turn off the engine. opened or the driver seat belt is enabled. 2. Check the heater cord for has been unbuckled. damage. If it is damaged, do . The hood has been opened. Engine Heater not use it. See your dealer for . The Auto Stop has reached the The engine heater can provide a replacement. Inspect the maximum allowed time. easier starting and better fuel cord for damage yearly. economy during engine warm-up in cold weather conditions at or below GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

224 Driving and Operating

{ Warning

Improper use of the heater cord or an extension cord can damage the cord and may result in overheating and fire. . Plug the cord into a three-prong electrical utility receptacle that is protected by a ground fault detection function. An ungrounded Base model shown other models 4. Plug the heater cord into the outlet could cause an are similar connector in the front fascia. electric shock. 3. Remove the engine heater 5. Plug the cord into a grounded . Use a weatherproof, connector cover by gently 110-volt AC outlet that is heavy-duty, 15 amp-rated prying with a flat blade tool. protected by a ground fault extension cord if needed. detection function. Failure to use the recommended extension cord in good operating condition, or using a damaged heater or extension cord, could make (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 225 The length of time the heater should Shifting Into Park Warning (Continued) remain plugged in depends on several factors. Ask a dealer in the it overheat and cause a fire, area where you will be parking the { Warning property damage, electric vehicle for the best advice on this. shock, and injury. It can be dangerous to get out of the vehicle if the shift lever is not . Do not operate the vehicle Retained Accessory fully in P (Park) with the parking with the heater cord Power (RAP) permanently attached to the brake firmly set. The vehicle can vehicle. Possible heater Some vehicle accessories may be roll. If you have left the engine cord and thermostat used after the ignition is turned off. running, the vehicle can move damage could occur. suddenly. You or others could be The power windows and sunroof, injured. To be sure the vehicle will . While in use, do not let the if equipped, will continue to work for not move, even when you are on up to 10 minutes or until any door is heater cord touch vehicle fairly level ground, use the steps parts or sharp edges. Never opened. that follow. With four-wheel drive, close the hood on the The infotainment system will if the transfer case is in heater cord. continue to work for 10 minutes, N (Neutral), the vehicle will be . Before starting the vehicle, until the driver door is opened, free to roll, even if the shift lever unplug the cord, reattach or until the ignition is turned on or is in P (Park). Be sure the transfer the cover to the plug, and placed in ACC/ACCESSORY. case is in a drive gear. If towing a securely fasten the cord. trailer, see Driving Characteristics Keep the cord away from and Towing Tips 0 276. any moving parts.

1. Hold the brake pedal down, 6. Before starting the engine, be then set the parking brake. See sure to unplug and store Electric Parking Brake 0 241. the cord. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

226 Driving and Operating 2. Move the shift lever into the Leaving the Vehicle with the If you have to leave the vehicle with P (Park) position by pulling the Engine Running the engine running, be sure the shift lever toward you and vehicle is in P (Park) and the moving it up as far as it will go. { Warning parking brake is firmly set before 3. Be sure the transfer case (if you leave it. After moving the shift equipped) is in a drive It can be dangerous to leave the lever into P (Park), hold the regular brake pedal down. Then, see if you gear – not in N (Neutral). vehicle with the engine running. The vehicle could move suddenly can move the shift lever away from 4. Turn the ignition off. For Key P (Park) without first pulling it toward if the shift lever is not fully in Access, push the ignition key you. If you can, it means that the P (Park) with the parking brake in, towards the steering column shift lever was not fully locked into firmly set. and then turn the ignition off. P (Park). If you have four-wheel drive and 5. For Key Access, remove the Torque Lock key and take it with you. If you the transfer case is in N (Neutral), can leave the vehicle with the the vehicle will be free to roll, If you are parking on a hill and you ignition key in your hand, the even if the shift lever is in do not shift the transmission into vehicle is in P (Park). P (Park). So be sure the transfer P (Park) properly, the weight of the vehicle may put too much force on For Keyless Access, take the case is in a drive gear – not in N (Neutral). the parking pawl in the Remote Keyless Entry (RKE) transmission. You may find it difficult transmitter with you. And, if you leave the vehicle with to pull the shift lever out of P (Park). the engine running, it could This is called torque lock. To overheat and even catch fire. You prevent torque lock, set the parking or others could be injured. Do not brake and then shift into P (Park) leave the vehicle with the engine properly before you leave the running unless you have to. driver seat. When you are ready to drive, move the shift lever out of P (Park) before you release the parking brake. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 227 If torque lock does occur, you may 2. Release the parking brake if it Parking over Things need to have another vehicle push is applied. See Electric Parking yours a little uphill to take some of Brake 0 241. That Burn the pressure from the parking pawl 3. Pull the shift lever toward you, { Warning in the transmission. You will then be then move it to the desired able to pull the shift lever out of position, and release. P (Park). Things that can burn could touch If the vehicle still cannot be shifted hot exhaust parts under the Shifting out of Park out of P (Park): vehicle and ignite. Do not park 1. Ease the pressure on, over papers, leaves, dry grass, This vehicle is equipped with an or other things that can burn. electronic shift lock release system. or release the shift lever. The system is designed to prevent 2. While holding the brake pedal, movement of the shift lever out of push the shift lever all the way Active Fuel Management P (Park), unless the brake pedal is into P (Park). If equipped, Active Fuel applied and the ignition is on or in 3. Pull the shift lever toward you, Management allows a V8, V6, or L4 Service Mode. then move it to the desired gasoline engine to operate on either The shift lock release is always position, and release. all of its cylinders, or a reduced functional except in the case of an If there is still a problem shifting, number of cylinders, depending on uncharged or low voltage less – have the vehicle serviced soon. the driving conditions. than 9 volt battery. – When less power is required, such If the vehicle has an uncharged or as cruising at a constant vehicle low voltage battery, try charging or speed, the system will enable jump starting the battery. See Jump reduced cylinder operation, allowing Starting - North America 0 395. the vehicle to achieve better fuel To shift out of P (Park): economy. When greater power is required, such as accelerating from 1. Apply the brake pedal. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

228 Driving and Operating a stop, passing, or merging onto a If the vehicle is left parked and Engine Exhaust freeway, the system will maintain running with the RKE transmitter full-cylinder operation. inside the vehicle, it will continue to run for up to an hour. { Warning Dynamic Fuel Management The vehicle could turn off sooner if it If equipped, Dynamic Fuel Engine exhaust contains carbon is parked on a hill, due to lack of monoxide (CO), which cannot be Management calculates the number available fuel. of cylinders needed to maximize seen or smelled. Exposure to CO fuel economy and meet the driving The timer will reset if the vehicle is can cause unconsciousness and demands. Dynamic Fuel taken out of P (Park) while it is even death. Management allows the engine to running. Exhaust may enter the vehicle if: operate in multiple possible configurations ranging from . The vehicle idles in areas 1-cylinder up to the full 8-cylinder with poor ventilation operation. (parking garages, tunnels, deep snow that may block Extended Parking underbody airflow or tail pipes). It is best not to park with the vehicle . The exhaust smells or running. If the vehicle is left running, sounds strange or different. be sure it will not move and there is adequate ventilation. . The exhaust system leaks due to corrosion or damage. See Shifting Into Park 0 225 and Engine Exhaust 0 228. . The vehicle exhaust system has been modified, If the vehicle is left parked and damaged, or improperly running with the RKE transmitter repaired. outside the vehicle, it will continue to run for up to half an hour. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 229 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 is in be sure the vehicle will not move. ACC/ACCESSORY, on or If unusual fumes are detected or See Shifting Into Park 0 225 and service mode. if it is suspected that exhaust is Engine Exhaust 0 228. coming into the vehicle: There are several different positions If parking on a hill and pulling a for the shift lever. . Drive it only with the trailer, see Driving Characteristics windows completely down. and Towing Tips 0 276. . Have the vehicle repaired immediately. Never park the vehicle with the engine running in an enclosed area such as a garage or a building that has no fresh air See Driver Mode Control 0 246 and ventilation. “Range Selection Mode” under Manual Mode 0 232. P: This position locks the rear wheels. Use P (Park) when starting the engine because the vehicle cannot move easily. When parked on a hill, especially when the vehicle has a heavy load, you might notice an increase in the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

230 Driving and Operating effort to shift out of P (Park). See To rock the vehicle back and forth to “Torque Lock” under Shifting Into { Warning get out of snow, ice, or sand without Park 0 225. damaging the transmission, see If If equipped with four-wheel drive, the Vehicle Is Stuck 0 208. the vehicle will be free to roll if the { Warning transfer case is in N (Neutral), N: In this position, the engine does even when the shift lever is in not connect with the wheels. To It is dangerous to get out of the restart the engine when the vehicle vehicle if the shift lever is not fully P (Park). You or someone else could be seriously injured. Be is already moving, use in P (Park) with the parking brake N (Neutral) only. firmly set. The vehicle can roll. sure the transfer case is in a drive gear — 2 m, 4 m, or 4 n — or set the Also, use N (Neutral) when the Do not leave the vehicle when the vehicle is being towed. parking brake before placing the engine is running. If you have left transfer case in N (Neutral). See the engine running, the vehicle Four-Wheel Drive 0 235. { Warning can move suddenly. You or others could be injured. To be sure the Shifting into a drive gear while the vehicle will not move, even when R: Use this gear to back up. engine is running at high speed is you are on fairly level ground, dangerous. Unless your foot is always set the parking brake and Caution firmly on the brake pedal, the move the shift lever to P (Park). vehicle could move very rapidly. See Shifting Into Park 0 225 and Shifting to R (Reverse) while the You could lose control and hit Driving Characteristics and vehicle is moving forward could people or objects. Do not shift Towing Tips 0 276. damage the transmission. The into a drive gear while the engine repairs would not be covered by is running at high speed. the vehicle warranty. Shift to R (Reverse) only after the vehicle is stopped. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 231 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 stabilization feature is designed to damage the transmission. The . When going less than about 55 km/h (35 mph), push the determine, before making an repairs would not be covered by upshift, if the engine is able to the vehicle warranty. Be sure the accelerator pedal about halfway down. maintain vehicle speed by analyzing engine is not running at high things such as vehicle speed, speed when shifting the vehicle. . When going about 55 km/h (35 throttle position, and vehicle load. mph) or more, push the If the shift stabilization feature accelerator all the way down. determines that a current vehicle speed cannot be maintained, the Caution By doing this, the vehicle shifts down to the next gear and has transmission does not upshift and more power. instead holds the current gear. A transmission hot message may In some cases, this could appear to display if the automatic Use D (Drive) and Tow/Haul Mode be a delayed shift, however the transmission fluid is too hot. when towing a trailer, carrying a transmission is operating normally. Driving under this condition can heavy load, driving on steep hills, damage the vehicle. Stop and idle or driving off-road. Shift the The transmission uses adaptive the engine to cool the automatic transmission to a lower gear if the shift controls. The adaptive shift transmission fluid. This message transmission shifts 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 200. 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-1500-11698638) - 2019 - crc - 5/16/18

232 Driving and Operating temperature changes. During this 2. Press the plus/minus buttons adaptive shift control process, Caution (Continued) on the shift lever to select the shifting might feel different as the desired range of gears for transmission determines the best When stopping on a hill, use the current driving conditions. settings. brakes to hold the vehicle in place. When the shift lever is moved from When temperatures are very cold, D (Drive) to L (Manual Mode), a the transmission's gear shifting number displays next to the L, could be delayed providing more Manual Mode indicating the current transmission stable shifts until the engine warms range. Range Selection Mode up. Shifts could be more noticeable This number is the highest gear that with a cold transmission. This the transmission will command while difference in shifting is normal. operating in L (Manual Mode). All L: This position allows selection of gears below that number are a range of gears appropriate for available. As driving conditions current driving conditions. change, the transmission can If equipped, see “Range Selection automatically shift to lower gears. Mode” under Manual Mode 0 232. For example, when L5 is selected, If equipped, Range Selection Mode 1 (First) through 5 (Fifth) gears are Caution helps control the vehicle's automatically shifted by the transmission and vehicle speed transmission, but 6 (Sixth) cannot be Spinning the tires or holding the while driving downhill or towing a used until the plus/minus button on vehicle in one place on a hill trailer by letting you select a desired the shift lever is used to change to using only the accelerator pedal range of gears. the range. may damage the transmission. To use this feature: In vehicles with gasoline engines, The repair will not be covered by 1. Move the shift lever to when the shift lever is moved from the vehicle warranty. If the vehicle L (Manual Mode). D (Drive) to L (Manual Mode), a is stuck, do not spin the tires. downshift may occur. The gear that (Continued) the transmission is operating in when the shift lever is moved from GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 233 D (Drive) to L (Manual Mode) 6-Speed Automatic Transmission determines if a downshift occurs. Gear before shifting from See the following charts. 6th 5th 4th 3rd 2nd 1st D (Drive) to L (Manual Mode) Range after shifting from L4 L4 L3 L2 L2 L1 D (Drive) to L (Manual Mode)

8-Speed Automatic Transmission Gear before shifting from 8th 7th 6th 5th 4th 3rd 2nd 1st D (Drive) to L (Manual Mode) Range after shifting from D (Drive) to L6 L6 L5 L4 L3 L3 L2 L1 L (Manual Mode) – Tow/Haul not engaged Range after shifting from D (Drive) to L6 L5 L4 L3 L3 L3 L2 L1 L (Manual Mode) – Tow/Haul engaged GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

234 Driving and Operating 10-Speed Automatic Transmission Gear before shifting from D (Drive) to 10th 9th 8th 7th 6th 5th 4th 3rd 2nd 1st L (Manual Mode) Range after shifting from D (Drive) to L7 L7 L7 L6 L5 L4 L3 L3 L2 L1 L (Manual Mode) - Tow/Haul not engaged Range after shifting from D (Drive) to L7 L7 L6 L5 L4 L3 L3 L3 L2 L1 L (Manual Mode) - Tow/Haul engaged

Grade Braking is not available when as with ice or snow. While the Range Selection Mode is active. Caution vehicle is at a stop, select L2 using See Tow/Haul Mode 0 234. Range Selection Mode. This will Spinning the tires or holding the While using Range Selection Mode, limit torque to the wheels and help vehicle in one place on a hill prevent the tires from spinning. cruise control and the Tow/Haul using only the accelerator pedal Mode can be used. may damage the transmission. Tow/Haul Mode If the vehicle has an exhaust brake, The repair will not be covered by it can also be used, but will not the vehicle warranty. If the vehicle The Tow/Haul Mode adjusts the automatically downshift the is stuck, do not spin the tires. transmission shift pattern to reduce transmission. See “Exhaust Brake” When stopping on a hill, use the shift cycling. This provides in the Duramax diesel supplement. brakes to hold the vehicle in increased performance, vehicle place. control, and enhanced transmission and engine cooling when driving down steep hills or mountain Low Traction Mode grades, when towing, or when If equipped, Low Traction Mode hauling heavy loads. See Driver 0 assists in vehicle acceleration when Mode Control 246 to activate Tow/ road conditions are slippery, such Haul Mode. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 235 If equipped, the Stop/Start system Drive Systems will become unavailable when Tow/ { Warning Haul Mode is active. Four-Wheel Drive If equipped with four-wheel drive, Tow/Haul Mode Grade Braking the vehicle will be free to roll if the If equipped, four-wheel drive Tow/Haul Mode Grade Braking is engages the front axle for extra transfer case is in N (Neutral), only enabled while the Tow/Haul traction. even when the shift lever is in Mode is selected and the vehicle is P (Park). You or someone else Read the appropriate section for not in the Range Selection Mode. could be seriously injured. Be transfer case operation before See Manual Mode 0 232. Tow/Haul sure the transfer case is in a drive using. Mode Grade Braking assists in gear — 2 m, 4 m, or 4 n — or set the maintaining desired vehicle speeds parking brake before placing the Caution when driving on downhill grades by transfer case in N (Neutral). See using the engine and transmission Shifting Into Park 0 225. to slow the vehicle. Do not drive on clean, dry pavement in 4 and 4 (if See Towing Equipment 0 285. m n 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 4 life of the drivetrain. m or 4 n may: . Cause a vibration to be felt in An engagement noise and bump is the steering system. normal when shifting between 4 n . Cause tires to wear faster. and 4 m or N (Neutral), with the engine running. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

236 Driving and Operating Shifting into 4 n will turn Traction To shift the transfer case, press the automatically based on driving Control and StabiliTrak/Electronic desired button. The graphic in the conditions. This setting provides Stability Control (ESC) off. See instrument cluster will flash while a slightly lower fuel economy than 2 m. Traction Control/Electronic Stability shift is in progress. The graphic Control 0 243. displayed will change to indicate the 4 m (Four-Wheel Drive High) : Use setting requested this setting when extra traction is Automatic Transfer Case When the shift is complete the needed, such as when driving on snowy or icy roads, when Two-Speed Transfer Case graphic will stop flashing. The DIC message turns off once the shift is off-roading, or when plowing snow. complete. If the transfer case can 4 n (Four-Wheel Drive Low) : This not complete a shift request, it will setting engages the front axle and go back to its last chosen setting. delivers extra torque. Choose 4 n The settings are: when driving off-road in deep sand, N (Neutral) : Use only when the deep mud, or deep snow, and while vehicle needs to be towed. climbing or descending steep hills. See Recreational Vehicle Towing While driving in 4 n, keep vehicle 0 399 or Towing the Vehicle 0 398. speed below 72 km/h (45 mph). 2 m (Two-Wheel Drive High) : Use Shifting into 4 n will turn Traction for driving on most streets and Control and StabiliTrak/ESC off. highways. The front axle is not See Traction Control/Electronic If equipped, the transfer case engaged. This setting provides the Stability Control 0 243. controls are used to shift into and best fuel economy. Shifts between 2 , 4 and AUTO out of four-wheel drive. AUTO (Automatic Four-Wheel m m Drive) : Use when road surface Any of these shifts can be made at conditions are variable. When normal driving speed. driving in AUTO, the front axle is engaged, and the vehicle's power is sent to the front and rear wheels GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 237 The actual 4x4 shift request is only Shifting Into 4 n If transmission is not in N (Neutral) made after the button is released. when shift request occurs, a DIC The 4x4 graphic will remain flashing 1. The ignition must be on and message displays. The vehicle will until the shift request has the vehicle must be stopped or allow 20 seconds for the shift to completed. A DIC message displays moving less than 5 km/h occur. After this time, a graphic in to indicate that the 4x4 transfer case (3 mph) with the transmission the instrument cluster will indicate in N (Neutral). It is best for the has been requested to shift to the that the transfer case is in 4 n. new desired state. vehicle to be moving 1.6 to 3.2 km/h (1 to 2 mph). Once the 4x4 shift has completed, Caution the DIC message disappears, the 2. Press 4 n. The actual 4x4 shift 4x4 graphic stops flashing, and the request is only made after the Shifting the transmission into gear current setting is indicated. button is released. The 4x4 before the requested mode graphic will remain flashing indicator light has stopped When a shift to 2 is completed m until the shift request has flashing could damage the successfully while in P (park), the completed. A DIC message transfer case. parking brake will engage. To displays to indicate that the 4x4 resume driving, shift the transfer case has been transmission to the desired gear requested to shift to the new If the transmission is not shifted into and manually release the parking desired state. N (Neutral) or the vehicle has not brake or press the accelerator pedal slowed to 5 km/h (3 mph) within to begin driving. See Electric Once the 4x4 shift has 20 seconds, the transfer case will Parking Brake 0 241. completed, the DIC message remain in its original state. This will disappears, the 4x4 graphic be indicated in the instrument If equipped, use 4 n, AUTO, or 4 m to stops flashing and the current cluster. provide additional traction when setting is indicated. parking on a steep grade with poor With the vehicle moving less than If vehicle speed is higher when shift 5 km/h (3 mph) and the transmission traction such as ice, snow, mud, request occurs, a DIC message or gravel. in N (Neutral), attempt the shift displays. Reduce vehicle speed. again. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

238 Driving and Operating Shifting Out of 4 n If transmission is not in N (Neutral) Shifting Into N (Neutral) when shift request occurs, DIC To shift into N (Neutral): 1. The vehicle must be messages will display. The vehicle stopped or moving less than will allow 20 seconds for this shift to 1. Start the vehicle. 5 km/h (3 mph) with the occur. After this time, a graphic in 2. Shift the transmission to transmission in N (Neutral) and the instrument cluster will indicate the ignition on. It is best for the N (Neutral). that the transfer case is in 4 n. vehicle to be moving 3. Shift the transfer case to 2 m. 1.6 to 3.2 km/h (1 to 2 mph). Caution 4. Apply the park brake and/or 2. Press 4 m, AUTO or 2 m. The service brake. actual 4x4 shift request is only Shifting the transmission into gear made after the button is before the requested mode 5. Press 2 m five times in released. The 4x4 graphic will indicator light has stopped 10 seconds until the N (Neutral) remain flashing until the shift flashing could damage the graphic starts flashing in the request has completed. A DIC transfer case. instrument cluster. When the message displays to indicate shift is complete, the graphic the state of the request. stops flashing. If the park brake If the transmission is not shifted into and/or service brake is not Once the 4x4 shift has N (Neutral) or the vehicle has not applied within 20 seconds, the completed, the DIC message slowed to 5 km/h (3 mph) within transfer case will remain in the disappears, the 4x4 graphic 20 seconds, the transfer case will original state. stops flashing, and the current remain in its original state. This will 6. If the transmission is not setting is indicated. be indicated in the instrument shifted into N (Neutral) or the cluster. If vehicle speed is higher when vehicle has not slowed to shift request occurs, a DIC With the vehicle moving less than 5 km/h (3 mph) within message displays. Reduce 5 km/h (3 mph), and the 20 seconds, the transfer case vehicle speed. transmission in N (Neutral), attempt will remain in its original state. the shift again. This will be indicated in the instrument cluster. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 239 Shifting Out of N (Neutral) Single Speed Transfer Case The settings are: To shift out of N (Neutral): 2 m (Two-Wheel Drive High) : Use 1. Turn the ignition on with engine for driving on most streets and off. highways. The front axle is not See Ignition Positions (Key engaged. This setting provides the Access) 0 217 or Ignition best fuel economy. Positions (Keyless Access) 4 (Four-Wheel Drive High) : Use 0 219. m this setting when extra traction is 2. Set the Parking Brake. See needed, such as when driving on Electric Parking Brake 0 241. snowy or icy roads, when 3. Shift the transmission to off-roading, or when plowing snow. N (Neutral) AUTO (Automatic Four-Wheel Drive) 4. Shift the transfer case to 2 m. If equipped, the transfer case Transfer case shifts out of controls are used to shift into and Use when road surface conditions N (Neutral) can only be made out of four-wheel drive. are variable. When driving in AUTO, when the transfer case is in 2 the front axle is engaged, and the m. When the shift to 2 m is To shift the transfer case, press the vehicle's power is sent to the front complete, the graphic in the desired button. The graphic in the and rear wheels automatically instrument cluster will stop instrument cluster will flash while a based on driving conditions. This flashing. If the transfer case shift is in progress. The graphic setting provides slightly lower fuel displayed will change to indicate the cannot complete a shift, the economy than 2 m. graphic will return to the setting requested previously selected setting. When the shift is complete the Shifts between 2 m, 4 m and AUTO graphic will stop flashing. The DIC Any of these shifts can be made at message turns off once the shift is normal driving speed. complete. If the transfer case can not complete a shift request, it will go back to its last chosen setting. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

240 Driving and Operating The actual 4x4 shift request is only Brakes ABS can change the brake pressure made after the button is released. to each wheel, as required, faster The 4x4 graphic will remain flashing than any driver could. This can help until the shift request has Antilock Brake you steer around the obstacle while completed. A DIC message System (ABS) braking hard. displays. This vehicle has an Antilock Brake As the brakes are applied, the Once the 4x4 shift has completed, System (ABS), an advanced computer keeps receiving updates the DIC message disappears, the electronic braking system that helps on wheel speed and controls 4x4 graphic stops flashing, and the prevent a braking skid. braking pressure accordingly. current setting is indicated. Remember: ABS does not change The actual 4x4 shift request is only the time needed to get a foot up to made after the button is released. the brake pedal or always decrease The 4x4 graphic will remain flashing stopping distance. If you get too until the shift request has close to the vehicle in front of you, completed. there will not be enough time to A DIC message displays. Once the apply the brakes if that vehicle 4x4 shift has completed, the DIC If there is a problem with ABS, this suddenly slows or stops. Always message disappears, the 4x4 warning light stays on. See Antilock leave enough room up ahead to graphic stops flashing, and the Brake System (ABS) Warning Light stop, even with ABS. 0 152. current setting is indicated. Using ABS If driving safely on a wet road and it becomes necessary to slam on the Do not pump the brakes. Just hold brakes and continue braking to the brake pedal down firmly and let avoid a sudden obstacle, a ABS work. You may hear noise or computer senses the wheels are feel vibration while the ABS is slowing down. If one of the wheels operating. is about to stop rolling, the computer The Traction Control System (TCS)/ will separately work the brakes at StabiliTrak indicator light will flash to each wheel. indicate that ABS is active. When GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 241 ABS is active, it may indicate that off. To prevent draining the battery, problem with the EPB. A DIC road surfaces are slippery. Braking avoid repeated cycles of the EPB message will display. Release the sooner may be required for driving when the engine is not running. EPB and try to apply it again. If the conditions. Y light does not come on, or keeps The system has a or PARK flashing, have the vehicle serviced. Braking in Emergencies Electric Parking Brake light, and a 8 Do not drive the vehicle if the Y or ABS allows you to steer and brake Service Parking Brake light. PARK light is flashing. See your at the same time. In many See Electric Parking Brake Light dealer. See Electric Parking Brake 0 emergencies, steering can help 152 and Service Electric Parking Light 0 152. more than even the very best Brake Light 0 152. There are also braking. parking brake-related Driver If the 8 light is on, press the EPB Information Center (DIC) messages. switch and hold it. Continue to hold Electric Parking Brake Before leaving the vehicle, check for the switch until the Y or PARK the Y or PARK light to ensure that light remains on. If the 8 light the parking brake is applied. remains on, see your dealer. EPB Apply If the EPB is applied while the vehicle is moving, the vehicle will To apply the EPB: decelerate as long as the switch is 1. Be sure the vehicle is at a pressed. If the switch is pressed complete stop. until the vehicle comes to a stop, the EPB will remain applied. 2. Press the EPB switch momentarily. The vehicle may automatically apply the EPB in some situations when The Y or PARK light will flash and the vehicle is not moving. This is then stay on once the EPB is fully normal, and is done to periodically check the correct operation of the The vehicle has an Electric Parking applied. If the Y or PARK light Brake (EPB). The EPB can always flashes continuously, then the EPB EPB system. be activated, even if the ignition is is only partially applied or there is a GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

242 Driving and Operating If the EPB fails to apply, block the applied the brake pedal in an rear wheels to prevent vehicle Caution attempt to quickly stop or slow down movement. the vehicle and to provide additional Driving with the parking brake on braking beyond a normal brake EPB Release can overheat the brake system pedal apply. Minor noise during this To release the EPB: and cause premature wear or time is normal and the brake pedal damage to brake system parts. should be applied as the driving 1. Turn the ignition on or to ACC/ Make sure that the parking brake dictates. The Brake Assist feature ACCESSORY. is fully released and the brake will automatically disengage when 2. Apply and hold the brake warning light is off before driving. the brake pedal is released or brake pedal. pedal pressure is quickly 3. Press the EPB switch Automatic EPB Release decreased. momentarily. The EPB will automatically release if Hill Start Assist (HSA) The EPB is released when the Y the vehicle is running, placed into or PARK light is off. gear, and an attempt is made to drive away. Avoid rapid acceleration { Warning If the 8 light is on, release the EPB when the EPB is applied, to Do not rely on the HSA feature. by pressing and holding the EPB preserve parking brake lining life. HSA does not replace the need to switch. Continue to hold the switch Y pay attention and drive safely. until the or PARK light is off. Brake Assist You may not hear or feel alerts or If either light stays on after release The Brake Assist feature assists in warnings provided by this system. is attempted, see your dealer. stopping or decreasing vehicle Failure to use proper care when speed in emergency driving driving may result in injury, death, conditions. This feature uses the or vehicle damage. See Electronic Brake Control Module Defensive Driving 0 198. (EBCM) which controls the hydraulic brake circuits to detect when the driver has quickly and forcefully GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 243 This feature is designed to prevent Ride Control Systems driver in keeping the vehicle on the the vehicle from rolling, either intended path. Trailer Sway Control forward or rearward, during vehicle (TSC) is also on automatically when drive off. HSA will be automatically Traction Control/ the vehicle is started. See Trailer activated after the vehicle has come Electronic Stability Sway Control (TSC) 0 293. to a complete standstill on a grade. Control If cruise control is being used and During the transition period between traction control or StabiliTrak/ESC when the brake pedal is released System Operation begins to limit wheel spin, cruise and the accelerator pedal is The vehicle has a Traction Control control will disengage. Cruise pressed, HSA holds the braking System (TCS) and StabiliTrak/ control may be turned back on when pressure to ensure that there is no Electronic Stability Control (ESC), road conditions allow. rolling. The brakes will automatically an electronic stability control release when the accelerator pedal Both systems come on system. These systems help limit is applied. It will not activate if the automatically when the vehicle is wheel spin and assist the driver in vehicle is in a drive gear and facing started and begins to move. The maintaining control, especially on downhill, or if the vehicle is facing systems may be heard or felt while slippery road conditions. uphill and in R (Reverse). they are operating or while TCS activates if it senses any of the performing diagnostic checks. This drive wheels are spinning or is normal and does not mean there beginning to lose traction. When this is a problem with the vehicle. happens, TCS applies the brakes to It is recommended to leave both the spinning wheels and reduces systems on for normal driving engine power to limit wheel spin. conditions, but it may be necessary StabiliTrak/ESC activates when the to turn TCS off if the vehicle gets vehicle senses a difference between stuck in sand, mud, ice, or snow. the intended path and the direction See If the Vehicle Is Stuck 0 208 the vehicle is actually traveling. and “Turning the Systems Off and StabiliTrak/ESC selectively applies On” later in this section. braking pressure to any one of the vehicle wheel brakes to assist the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

244 Driving and Operating When the transfer case (if equipped) d comes on and stays on to The button for TCS and StabiliTrak/ is in Four-Wheel Drive Low, the indicate that the system is inactive ESC is on the center stack. stability system is automatically and is not assisting the driver in disabled, g comes on, and the maintaining control. The vehicle is Caution appropriate message will appear on safe to drive, but driving should be the Driver Information Center (DIC). adjusted accordingly. Do not repeatedly brake or Both traction control and StabiliTrak/ d accelerate heavily when TCS is ESC are automatically disabled in If comes on and stays on: off. The vehicle driveline could be this condition. 1. Stop the vehicle. damaged. 2. Turn the engine off and wait 15 seconds. To turn off only TCS, press and 3. Start the engine. release g. The traction off light i displays in the instrument cluster. Drive the vehicle. If d comes on The appropriate message will and stays on, the vehicle may need display in the DIC. To turn TCS on more time to diagnose the problem. The indicator light for both systems again, press and release g. The If the condition persists, see your i is in the instrument cluster. This dealer. traction off light displayed in the light will: instrument cluster will turn off. Turning the Systems Off . Flash when TCS is limiting and On If TCS is limiting wheel spin when g wheel spin. is pressed, the system will not turn . Flash when StabiliTrak/ESC is off until the wheels stop spinning. activated. To turn off both TCS and StabiliTrak/ . Turn on and stay on when either ESC, press and hold g until the system is not working. traction off light i and the If either system fails to turn on or to StabiliTrak/ESC OFF light g come activate, a message displays in the on and stay on in the instrument Driver Information Center (DIC), and GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 245 cluster, then release. The Hill Descent If HDC is to be used for more than appropriate message will display in three minutes or on grades steeper the DIC. Control (HDC) than 25%, the transfer case should To turn TCS and StabiliTrak/ESC on If equipped, Hill Descent Control be put into Four-Wheel Drive Low (HDC) sets and maintains vehicle again, press and release g. The (4 n) to reduce the possibility of speed while driving down steep brake overheating. traction off light i and the grades in a forward or reverse gear. Noise from the Electronic Brake StabiliTrak/ESC OFF light g in the The HDC switch is on the center stack, below the climate controls. Control Module (EBCM) is normal instrument cluster turn off. when HDC is active. 5 StabiliTrak/ESC will automatically Press to enable or disable HDC. When HDC is activated, the initial turn on if the vehicle exceeds Vehicle speed must be below HDC speed is set to the current 56 km/h (35 mph). Traction control 50 km/h (31 mph). driving speed. It can be increased or will remain off. decreased by pressing +RES or The vehicle has a Trailer Sway SET- on the steering wheel, or by Control (TSC) feature and a Hill applying the accelerator or brake Start Assist (HSA) feature. pedal. This adjusted speed See Trailer Sway Control (TSC) becomes the new set speed. 0 293 or Hill Start Assist (HSA) 0 HDC will remain enabled between 242. 30 and 60 km/h (19 and 37 mph); When enabled, the HDC light Adding accessories can affect the however, vehicle speed cannot be displays on the instrument cluster. vehicle performance. See set or maintained in this range. HDC Accessories and Modifications A blinking HDC light indicates the will automatically disable if the 0 313. system is actively applying the vehicle speed is above 80 km/h brakes to maintain vehicle speed. (50 mph) or above 60 km/h HDC can maintain vehicle speeds (37 mph) for at least 30 seconds. between 1 and 22 km/h (1 and 5 must be pressed again to 14 mph) on grades greater than or re-enable HDC. HDC may disable equal to 10%. after an extended period of use. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

246 Driving and Operating If this happens, HDC will require Mode Activation time to cool down. The length of time HDC remains active depends on road conditions, grade, set speed, vehicle loading, and outside temperature. When enabled, if the vehicle speed is above 30 km/h (19 mph) and below 60 km/h (37 mph), a DIC message will display. Driver Mode Control Vehicles without mode graphics on This feature adds a sportier feel, the knob will have a menu selection provides a more comfortable ride, screen in the instrument cluster to or assists in different weather To activate modes, rotate the Drive select the desired mode. When the conditions or terrain to optimize Mode knob left or right to the Drive Mode knob is rotated, the driving performance. Depending on desired mode. mode list will display the next the option package, available available mode. features, and mode selected, the suspension, steering, and powertrain will change settings to achieve the desired mode characteristics. Selecting the various Driver Modes enhances the ride performance for the road conditions and the selected mode. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 247 When in Sport Mode, the vehicle will Off-Road Mode shift automatically but may hold a Use to improve driving at moderate lower gear longer than it would in speeds, on grass, gravel, dirt, the normal driving mode based on unpaved roads, or snow-covered braking, throttle input, and vehicle roads that have not been groomed lateral acceleration. See Automatic or plowed. Transmission 0 229. The steering will change to provide more precise The accelerator pedal will be more control. The continuous damping will sensitive to provide finer control of change to provide better cornering the torque at the wheels. Electronic performance. Stability Control (ESC), the Antilock Brake System (ABS), and the When selected, the Sport Mode light Traction Control System (TCS) will If equipped, select Terrain Mode by displays in the instrument cluster. change for optimal off-road pressing the “TERRAIN MODE Snow Mode performance. Use this mode for ICON” icon button, below the 4 m public off-road recreational driving. Use when more traction is needed transfer case button. See Off-Road Driving 0 200. during slippery conditions. The Modes: vehicle will upshift normally when When selected, the Off-Road Mode the vehicle is moving. The indicator light displays in the Tour Mode acceleration will adjust to help instrument cluster. Use for normal city and highway provide a smoother launch. Tow/Haul Mode driving to provide a smooth, soft Snow Mode is only available on This feature assists when pulling a ride. When selected, there is no two-wheel-drive vehicles. When indicator in the instrument cluster. heavy trailer or a large or heavy selected, the Snow Mode light load. See Tow/Haul Mode 0 234. Sport Mode displays in the instrument cluster. Tow/Haul Mode is designed to be Use where road conditions or most effective when the vehicle and personal preference demand a more trailer combined weight is at least controlled response. 75% of the vehicle’s Gross GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

248 Driving and Operating Combined Weight Rating (GCWR). If the vehicle is turned off with Tow/ When in Terrain Mode, the vehicle See “Weight of the Trailer” under Haul Mode active, Tow/Haul Mode will shift automatically but may hold Trailer Towing 0 281. will remain active after the vehicle a lower gear longer to maximize Tow/Haul Mode is most useful when has been turned on if the vehicle engine torque. The steering will pulling a heavy trailer or a large or was turned off for less than four change to provide more precise heavy load under the following hours. Otherwise, the vehicle will control. A unique pedal map, conditions: start up in Tour Mode. transmission shift pattern, and rpm control are utilized to give better . Through rolling terrain Terrain Mode control at lower speeds and over . In stop-and-go traffic Use for finer control during low rough terrain. When the vehicle speed, off-road driving. When using comes to a stop, Vehicle Hold is . In busy parking lots where this mode it will mimic the engaged. TCS will be optimized for improved low speed control of characteristics of four-wheel-drive maximum torque transfer across the vehicle is desired low without the torque capabilities. axles, and Active Braking During Lift Operating the vehicle in Tow/Haul Use when: Throttle will be engaged. Mode when lightly loaded or with no Active Braking During Lift Throttle: trailer at all will not cause damage. . Traveling on very rough roads at However, there is no benefit to very low speeds, such as a . Automatically applies light selecting Tow/Haul Mode when the two-track or heavily rutted road. braking, similar to heavy engine vehicle is unloaded. Such a . Traveling slowly in grassy fields. braking of four-wheel-drive low. selection when unloaded may result . In D (Drive), the vehicle will in unpleasant engine and . Pulling a boat out of the water on a trailer. apply light braking until the transmission driving characteristics vehicle is at idle speeds. In and reduced fuel economy. . Using the vehicle for public Manual L1 and Manual L2, off-road recreational driving. moderate braking may stop the When selected, the Tow/Haul Mode 0 light will display in the instrument See Off-Road Driving 200 and vehicle. Hill and Mountain Roads 0 206. cluster. . Trailer braking is reduced. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 249

Terrain Mode without pressing accelerator Drive Select Expected Vehicle Behavior Ideal Terrain pedal. The vehicle will also creep forward on flat ground. Minor deceleration when off Grassy fields, . If the driver seat belt is removed throttle and mild ability to mild two tracks, and the driver door is opened Drive (L3-Lx) modulate throttle, mimicks rutted roads, while vehicle is being held, EPB performance of 4-low without large rolling hills, will be engaged. torque multiplication. . EPB will engage if vehicle is Moderate deceleration when held for an extended period. off throttle and moderate Mild rock crawling, L2 ability to modulate throttle. heavy ruts, Terrain Mode is only available on Will bring vehicle to a stop in short, steeper grades, vehicles equipped with the single most cases. speed transfer case. Significant deceleration when Terrain Mode can only be off throttle and significant active when: Rock crawling L1 ability to modulate throttle. down hill . Vehicle speed is less than Will bring vehicle to a stop in 80 km/h (50 mph). most cases. . The transfer case is in 4 m. Frequent use of this mode may Active Braking During Lift Throttle grade in reverse gear, Vehicle cause brake wear due to the light will reduce the back and forth Hold is engaged until the braking. between the accelerator and brake accelerator pedal is pressed. pedals. The vehicle will automatically exit . When the vehicle is in forward the mode if the brakes get too hot. Vehicle Hold Features: gear on a decline, the vehicle is Terrain mode can be turned back on . When the vehicle comes to a allowed to creep down the hill after the brakes have cooled. stop on an incline grade in when brake pedal is released forward gear or on a decline GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

250 Driving and Operating When Terrain Mode is selected: Locking Rear Axle Cruise Control . Auto Engine Start/Stop will be Vehicles with a locking rear axle can disabled. give more traction on snow, mud, { Warning . The Terrain Mode indicator ice, sand, or gravel. It works like a displays on the instrument standard axle most of the time, but Cruise control can be dangerous cluster. when traction is low, this feature will where you cannot drive safely at allow the rear wheel with the most a steady speed. Do not use Limited-Slip Differential traction to move the vehicle. cruise control on winding roads or in heavy traffic. If equipped, the limited-slip differential can give more traction on Cruise control can be dangerous snow, mud, ice, sand, or gravel. on slippery roads. On such roads, It works like a standard axle most of fast changes in tire traction can the time, but when traction is low, cause excessive wheel slip, and this feature allows the drive wheel you could lose control. Do not use with the most traction to move the cruise control on slippery roads. vehicle. For vehicles with the limited-slip differential, driven under With cruise control a speed of about severe conditions, the rear axle fluid 40 km/h (25 mph) or more can be should be changed. See maintained without keeping your Maintenance Schedule 0 415. foot on the accelerator. Cruise control does not work at speeds below about 40 km/h (25 mph). If the cruise control is being used and the Traction Control System (TCS) or StabiliTrak/Electronic Stability Control (ESC) begins to limit wheel spin, the cruise control GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 251 will automatically disengage. See 5 : Press to turn cruise control on 3. Press and release SET−. Traction Control/Electronic Stability or off. A white indicator comes on or 0 4. Remove your foot from the Control 243. If a collision alert off in the instrument cluster. accelerator. occurs when cruise control is activated, cruise control is +RES : If there is a set speed in The cruise control indicator on the disengaged. See Forward Collision memory, press the control up briefly instrument cluster turns green after Alert (FCA) System 0 260. When to resume to that speed or press cruise control has been set to the road conditions allow you to safely and hold to accelerate. If cruise desired speed. See Instrument use it again, cruise control can be control is already engaged, use to Cluster 0 138. increase vehicle speed. turned back on. Resuming a Set Speed Turning off the TCS or StabiliTrak/ SET− : Press the control down briefly to set the speed and activate If the cruise control is set at a ESC system will disengage the desired speed and then the brakes cruise control. cruise control. If cruise control is already engaged, use to decrease are applied or * is pressed, the If the brakes are applied, cruise vehicle speed. cruise control is disengaged without control disengages. * : Press to disengage cruise erasing the set speed from memory. control without erasing the set Once the vehicle reaches about speed from memory. 40 km/h (25 mph) or more, press RES+ up briefly. The vehicle returns Setting Cruise Control to the previously set speed. 5 If is on when not in use, SET− or Increasing Speed While Using +RES could get pressed and go into Cruise Control cruise when not desired. Keep 5 Do one of the following: off when cruise is not being used. . Press and hold +RES up until 1. Press 5 to turn the cruise the desired speed is reached, system on. then release it. 2. Get up to the desired speed. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

252 Driving and Operating . To increase vehicle speed in Passing Another Vehicle While It assists in maintaining driver small increments, press +RES Using Cruise Control selected speed when driving on up briefly. For each press, the Use the accelerator pedal to downhill grades by using the engine vehicle goes about 1 km/h increase the vehicle speed. When and transmission to slow the (1 mph) faster. you take your foot off the pedal, the vehicle. The speedometer reading can be vehicle will slow down to the For other forms of descent control, displayed in either English or metric previously set cruise speed. While see Hill Descent Control (HDC) units. See Instrument Cluster 0 138. pressing the accelerator pedal or 0 245, Automatic Transmission The increment value used depends shortly following the release to 0 229, and Tow/Haul Mode 0 234. on the units displayed. override cruise control, briefly Ending Cruise Control pressing SET– will result in cruise Reducing Speed While Using control set to the current vehicle There are four ways to end cruise Cruise Control speed. control: Do one of the following: Using Cruise Control on Hills . Step lightly on the brake pedal. . Press and hold SET– down until * the desired lower speed is How well the cruise control works . Press . reached, then release it. on hills depends on the vehicle speed, the load, and the steepness . Shift the transmission to . To slow down in small of the hills. When going up steep N (Neutral). increments, press SET– down hills, pressing the accelerator pedal . To turn off cruise control, briefly. For each press, the may be necessary to maintain press 5. vehicle goes about 1 km/h vehicle speed. (1 mph) slower. Erasing Speed Memory While going downhill, cruise braking The speedometer reading can be helps maintain driver selected The cruise control set speed is displayed in either English or metric speed. erased from memory if 5 is pressed 0 units. See Instrument Cluster 138. or the ignition is turned off. The increment value used depends Cruise Grade Braking is enabled on the units displayed. when the vehicle is started and cruise control is active. It is not enabled in Range Selection Mode. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 253

Driver Assistance Warning (Continued) Warning (Continued) Systems . Detect children, Complete attention is always This vehicle may have features that pedestrians, bicyclists, required while driving, and you work together to help avoid crashes or animals. should be ready to take action or reduce crash damage while . Detect vehicles or objects and apply the brakes and/or steer driving, backing, and parking. Read outside the area monitored the vehicle to avoid crashes. this entire section before using by the system. these systems. . Work at all driving speeds. Audible or Safety Alert Seat { Warning . Warn you or provide you Some driver assistance features with enough time to avoid a alert the driver of obstacles by Do not rely on the Driver crash. beeping. To change the volume of Assistance Systems. These the warning chime, see Comfort Work under poor visibility or “ systems do not replace the need . and Convenience under Vehicle bad weather conditions. ” for paying attention and driving Personalization 0 167. safely. You may not hear or feel . Work if the detection sensor If equipped with the Safety Alert alerts or warnings provided by is not cleaned or is covered Seat, the driver seat cushion may these systems. Failure to use by ice, snow, mud, or dirt. provide a vibrating pulse alert proper care when driving may . Work if the detection sensor instead of beeping. To change this, result in injury, death, or vehicle is covered up, such as with see “Collision/Detection Systems” damage. See Defensive Driving a sticker, magnet, or metal under Vehicle Personalization 0 198. plate. 0 167. Under many conditions, these . Work if the area surrounding Cleaning systems will not: the detection sensor is Depending on vehicle options, keep (Continued) damaged or not properly repaired. these areas of the vehicle clean to ensure the best driver assistance (Continued) feature performance. Driver GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

254 Driving and Operating Information Center (DIC) messages . Front and rear bumpers and the The RVC, RPA, and Surround may display when the systems are area below the bumpers Vision will not work properly if the unavailable or blocked. . Front grille and headlamps tailgate is down. If the tailgate is down, do not use these systems. . Front camera lens in the front grille or near the front emblem Rear Vision Camera (RVC) . Front side and rear side panels When the vehicle is shifted into R (Reverse), the RVC displays an . Outside of the windshield in front image of the area behind the vehicle of the rearview mirror in the infotainment display. The . Side camera lens on the bottom previous screen displays when the of the outside mirrors vehicle is shifted out of R (Reverse) after a short delay. To return to the . Rear side corner bumpers previous screen sooner, press any . Rear Vision Camera in the button on the infotainment system, tailgate handle shift into P (Park), or, while in D (Drive), reach a vehicle speed of Assistance Systems for approximately 12 km/h (8 mph). The Parking or Backing rear vision camera is in the tailgate handle. If equipped, the Rear Vision Camera (RVC), Surround Vision, Rear Park Assist (RPA), Front Park Assist (FPA), and Rear Cross Traffic Alert (RCTA) may help the driver park or avoid objects. Always check around the vehicle when parking or backing. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 255 Displayed images may be farther or vehicle is shifted into R (Reverse). closer than they appear. The area To return to the previous screen displayed is limited and objects that sooner, press any button on the are close to either corner of the infotainment system, shift into bumper or under the bumper do not P (Park), or, while in D (Drive), display. reach a vehicle speed of A warning triangle may display to approximately 12 km/h (8 mph). show that Rear Park Assist (RPA) has detected an object. This triangle { Warning changes from amber to red and increases in size the closer the The Surround Vision cameras object. have blind spots and will not display all objects near the 1. View Displayed by the Rear If equipped with Hitch View, see corners of the vehicle. Folding Vision Camera “Surround Vision” following. outside mirrors that are out of Surround Vision (360 Degrees) position may not display surround view correctly. Always check If equipped, the Surround Vision around the vehicle when parking system can display various views or backing. surrounding the vehicle in the infotainment display using four cameras mounted around the vehicle. The front camera is in the grille under the front emblem, the side cameras are on the bottom of 1. View Displayed by the Rear the outside mirrors, and the rear Vision Camera camera is in the tailgate handle. 2. Corners of the Rear Bumper The Surround Vision system can be accessed by selecting CAMERA in the infotainment display or when the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

256 Driving and Operating Camera Views { Warning

The camera(s) do not display children, pedestrians, bicyclists, crossing traffic, animals, or any other object outside of the cameras’ field of view, below the bumper, or under the vehicle. 1. Views Displayed by the Shown distances may be different Surround Vision Cameras from actual distances. Do not 2. Area Not Shown drive or park the vehicle using only these camera(s). Always check behind and around the vehicle before driving. Failure to Touch the camera view buttons use proper care may result in along the bottom of the infotainment injury, death, or vehicle damage. display. Front/Rear Standard View : Displays an image of the area in front or behind the vehicle. Touch Front/Rear Standard View on the infotainment display when a camera 1. Views Displayed by the view is active. Touching the button Surround Vision Cameras multiple times will toggle between 2. Area Not Shown front and rear camera views. If equipped, the front view camera also displays when the Park Assist system detects an object within 30 cm (12 in). GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 257 Front/Rear Junction View : Rearward View on the infotainment forward gear or when the vehicle is Displays a front or rear cross traffic display when a camera view is moving forward slower than 12 km/h view that shows objects directly to active. Touching the button multiple (8 mph). This view can only be the left and right of the front or back times will toggle between forward enabled in Front/Rear Standard of the vehicle. Touch Junction View and rearward views. Park Assist View by touching the Top Down on the infotainment display when a and RCTA overlays are not View button when the CAMERA camera view is active. Touching the available when Side Forward/ view is active. button multiple times will toggle Rearward view is active. Hitch Guidance between front and rear camera Hitch View : Assists while views. connecting to a trailer. Displays a This feature displays a single, Front/Rear Overhead View : zoomed-in view of the hitch to help centered guideline on the camera display to assist with aligning a Displays a front or rear overhead align the vehicle’s hitch ball with the view of the vehicle. Touching the trailer coupler. Shifting into P (Park) vehicle’s hitch ball with a trailer button will toggle between the two while in this view will automatically coupler. Select the trailer guidance views. engage the Electronic Parking line button, then align the trailer Brake (EPB). guidance line over the trailer Front/Rear Bowl View : Displays a coupler. Continuously steer the view of the vehicle from either the Guidance Lines : Displays vehicle to keep the guidance line front or the back of the vehicle. available guidelines, including centered on the coupler when Touch Bowl View on the standard and Hitch Guidance. When backing. RVC Park Assist overlays infotainment display when a camera enabled, the guidelines will display will not display when the trailer view is active. Touching the button when the vehicle is shifted into guidance line is active. Hitch multiple times will toggle between R (Reverse). Guidance is only available in forward and rearward views. Park Top Down View : Displays an Standard View. Assist and RCTA overlays are not image of the area surrounding the available when Bowl view is active. To check the trailer when in a vehicle, along with the rear camera forward gear above 12 km/h Side Forward/Rearward View : view in the infotainment display. The (8 mph), touch CAMERA on the Displays a view that shows objects rear camera view will be replaced infotainment display to view the rear next to the front or rear sides of the by the front camera view after vehicle. Touch Side Forward/ shifting from R (Reverse) to a GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

258 Driving and Operating camera. Touch X to exit the view or vehicle. The side cameras are on shift into P (Park), or, while in D it will be removed automatically after the bottom of the outside mirrors (Drive), reach a vehicle speed of eight seconds. and the rear camera is in the approximately 12 km/h (8 mph). tailgate handle. A fourth camera can Touch the camera view buttons { Warning be mounted to the rear of a trailer to along the bottom of the infotainment allow access to all possible camera display. Use Hitch Guidance only to help features. See your dealer for an back the vehicle to a trailer hitch accessory fourth trailer camera. . Rear Standard View or, when travelling above 12 km/h . Rear Junction View (8 mph), to briefly check the . Rear Overhead View status of your trailer. Do not use for any other purpose, such as . Hitch View making lane change decisions. . Trailer Views: Mirror Trailer Before making a lane change, View, Rear Trailer Camera View, always check the mirrors and Rear Trailer Combo View. glance over your shoulder. Touching this button multiple Improper use could result in times will toggle between the serious injury to you or others. available views. . Side Forward/Rearward View Surround Vision (270 Degrees . Guidance Lines: Touching this with Trailer Camera Views) The Surround Vision (270 Degrees) button will toggle the guidelines If equipped, the Surround Vision can be accessed by selecting in select rear camera views (270 Degrees) has additional CAMERA in the infotainment display between Off, Standard Rear, and trailering views and no Front Vision or when the vehicle is shifted into Hitch Guidance. R (Reverse). To return to the Camera. It can display various . Top Down View views surrounding the vehicle in the previous screen sooner, press any infotainment display using three button on the infotainment system, cameras mounted around the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 259 Park Assist When an object is first detected in Warning (Continued) the rear, one beep will be heard With Front and Rear Park Assist, as from the rear, or both sides of the the vehicle moves at speeds of less (5 mph). To prevent injury, death, Safety Alert Seat will pulse two than 8 km/h (5 mph) the sensors on or vehicle damage, even with times. When an object is very close the bumpers may detect objects up Park Assist, always check the (<0.4 m (1.5 ft) in the vehicle rear or to 1.2 m (4 ft) in front and 2.5 m (8 ft) area around the vehicle and <0.3 m (1 ft) in the vehicle front), a behind the vehicle within a zone check all mirrors before moving continuous beep will sound from the 25 cm (10 in) high off the ground forward or backing. rear or front depending on object and below bumper level. These location, or both sides of the Safety detection distances may be shorter Alert Seat will pulse five times. during warmer or humid weather. Beeps for FPA are higher pitched Blocked sensors will not detect than for RPA. objects and can also cause false detections. Keep the sensors clean Rear Cross Traffic Alert (RCTA) of mud, dirt, snow, ice, and slush; If equipped, when the vehicle is and clean sensors after a car wash shifted into R (Reverse), RCTA in freezing temperatures. shows a red warning triangle with a left or right pointing arrow on the { Warning infotainment display to warn of The instrument cluster may have a traffic coming from the left or right. The Park Assist system does not Park Assist display with bars that This system detects objects coming detect children, pedestrians, show “distance to object” and object from up to 20 m (65 ft) from the left bicyclists, animals, or objects location information for the Front or right side of the vehicle. When an located below the bumper or that and Rear Park Assist system. As object is detected, either three are too close or too far from the the object gets closer, more bars beeps sound from the left or right or vehicle. It is not available at light up and the bars change color three Safety Alert Seat pulses occur speeds greater than 8 km/h from yellow to amber to red. on the left or right side, depending (Continued) on the direction of the detected vehicle. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

260 Driving and Operating Use caution while backing up when Front and Rear Park Assist can be Alert (SBZA), Lane Change Alert towing a trailer, as the RCTA turned Off, On, or On with Towbar (LCA), Forward Automatic Braking detection zones that extend out through vehicle personalization. See (FAB), and/or the Front Pedestrian from the back of the vehicle do not “Park Assist” under Vehicle Braking (FPB) System can help to move further back when a trailer is Personalization 0 167. If Park Assist avoid a crash or reduce crash towed. is turned off through vehicle damage. RCTA is disabled when the trailer personalization, the Park Assist connection status is displayed. button will be disabled. To turn Park Forward Collision Alert Assist on again, select On in the (FCA) System RCTA can be turned off through vehicle personalization menu. The “Collision/Detection Systems” under On with Towbar setting allows for If equipped, the FCA system may Vehicle Personalization 0 167. Park Assist to work properly with a help to avoid or reduce the harm caused by front-end crashes. When Turning the Features On or Off trailer hitch. Some larger trailer hitches may not be compatible. approaching a vehicle ahead too quickly, FCA provides a red flashing Turn off Park Assist when towing a alert on the windshield and rapidly trailer. beeps or pulses the driver seat. To turn the RPA symbols on or off, FCA also lights an amber visual see “Rear Camera Park Assist alert if following another vehicle Symbols” under Vehicle much too closely. Personalization 0 167. FCA detects vehicles within a Press X on the center stack to distance of approximately 60 m turn on or off the Front and Rear Assistance Systems for (197 ft) and operates at speeds Park Assist. The indicator light next Driving above 8 km/h (5 mph). to the button comes on when the features are on and turns off when If equipped, when driving the the features have been disabled. vehicle in a forward gear, Forward Collision Alert (FCA), Lane Departure Warning (LDW), Lane Keep Assist (LKA), Side Blind Zone GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 261 Detecting the Vehicle Ahead { Warning Warning (Continued)

FCA is a warning system and or ice, or if the windshield is does not apply the brakes. When damaged. It may also not detect a approaching a slower-moving or vehicle on winding or hilly roads, stopped vehicle ahead too rapidly, or in conditions that can limit or when following a vehicle too visibility such as fog, rain, closely, FCA may not provide a or snow, or if the headlamps or warning with enough time to help FCA warnings will not occur unless windshield are not cleaned or in the FCA system detects a vehicle avoid a crash. It also may not proper condition. Keep the ahead. When a vehicle is detected, provide any warning at all. FCA windshield, headlamps, and FCA the vehicle ahead indicator will does not warn of pedestrians, display green. Vehicles may not be sensors clean and in good repair. animals, signs, guardrails, detected on curves, highway exit bridges, construction barrels, ramps, or hills, due to poor visibility; Collision Alert or other objects. Be ready to take or if a vehicle ahead is partially action and apply the brakes. See blocked by pedestrians or other Defensive Driving 0 198. objects. FCA will not detect another vehicle ahead until it is completely FCA can be disabled through in the driving lane. vehicle personalization. See Collision/Detection Systems under { Warning “ ” With Head-Up Display Vehicle Personalization 0 167. FCA does not provide a warning to help avoid a crash, unless it detects a vehicle. FCA may not detect a vehicle ahead if the FCA sensor is blocked by dirt, snow, (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

262 Driving and Operating Tailgating Alert timing. The range of selectable alert timings may not be appropriate for all drivers and driving conditions. Following Distance Indicator The following distance to a moving Without Head-Up Display vehicle ahead in your path is indicated in following time in When your vehicle approaches The vehicle ahead indicator will seconds on the Driver Information another detected vehicle too rapidly, display amber when you are Center (DIC). The minimum the red FCA display will flash on the following a vehicle ahead much too following time is 0.5 seconds away. windshield. Also, eight rapid closely. If there is no vehicle detected high-pitched beeps will sound from ahead, or the vehicle ahead is out of the front, or both sides of the Safety Selecting the Alert Timing sensor range, dashes will be Alert Seat will pulse five times. The Collision Alert control is on the displayed. When this Collision Alert occurs, the brake system may prepare for driver steering wheel. Press [ to set the Unnecessary Alerts FCA timing to Far, Medium, or Near. braking to occur more rapidly which FCA may provide unnecessary can cause a brief, mild deceleration. The first button press shows the current setting on the DIC. alerts for turning vehicles, vehicles Continue to apply the brake pedal in other lanes, objects that are not as needed. Cruise control may be Additional button presses will change this setting. The chosen vehicles, or shadows. These alerts disengaged when the Collision Alert are normal operation and the occurs. setting will remain until it is changed and will affect the timing of both the vehicle does not need service. Collision Alert and the Tailgating Alert features. The timing of both alerts will vary based on vehicle speed. The faster the vehicle speed, the farther away the alert will occur. Consider traffic and weather conditions when selecting the alert GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 263 Cleaning the System hard. This forward automatic braking can only occur if a vehicle is Warning (Continued) If the FCA system does not seem to detected. This is shown by the FCA operate properly, this may correct vehicle ahead indicator being lit. . Detect all vehicles, the issue: See Forward Collision Alert (FCA) especially vehicles with a . Clean the outside of the System 0 260. trailer, tractors, muddy windshield in front of the vehicles, etc. The system works when driving in a rearview mirror. forward gear between 8 km/h . Detect a vehicle when . Clean the entire front of the (5 mph) and 80 km/h (50 mph). weather limits visibility, such vehicle. It can detect vehicles up to as in fog, rain, or snow. . Clean the headlamps. approximately 60 m (197 ft). . Detect a vehicle ahead if it is partially blocked by Forward Automatic { Warning pedestrians or other objects. Braking (FAB) Complete attention is always FAB is an emergency crash required while driving, and you If the vehicle has Forward Collision preparation feature and is not should be ready to take action Alert (FCA), it also has FAB, which designed to avoid crashes. Do and apply the brakes and/or steer includes Intelligent Brake not rely on FAB to brake the the vehicle to avoid crashes. Assist (IBA). When the system vehicle. FAB will not brake detects a vehicle ahead in your path outside of its operating speed that is traveling in the same range and only responds to FAB may slow the vehicle to a direction that you may be about to detected vehicles. complete stop to try to avoid a crash into, it can provide a boost to potential crash. If this happens, FAB braking or automatically brake the FAB may not: may engage the Electric Parking vehicle. This can help avoid or . Detect a vehicle ahead on Brake (EPB) to hold the vehicle at a lessen the severity of crashes when winding or hilly roads. stop. Release the EPB or firmly press the accelerator pedal. driving in a forward gear. Depending (Continued) on the situation, the vehicle may automatically brake moderately or GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

264 Driving and Operating . Heavy rain or snow is interfering { Warning { Warning with object detection. FAB may automatically brake the IBA may increase vehicle braking . There is a problem with the vehicle suddenly in situations in situations when it may not be StabiliTrak system. where it is unexpected and necessary. You could block the The FAB system does not need undesired. It could respond to a flow of traffic. If this occurs, take service. turning vehicle ahead, guardrails, your foot off the brake pedal and signs, and other non-moving then apply the brakes as needed. Front Pedestrian Braking objects. To override FAB, firmly (FPB) System press the accelerator pedal, if it is FAB and IBA can be disabled If equipped, the FPB system may safe to do so. through vehicle personalization. See help avoid or reduce the harm Collision/Detection Systems under “ ” caused by front-end crashes with Vehicle Personalization 0 167. Intelligent Brake Assist (IBA) nearby pedestrians when driving in IBA may activate when the brake a forward gear. FPB displays an pedal is applied quickly by providing { Warning amber indicator, ~, when a nearby a boost to braking based on the Using FAB or IBA while towing a pedestrian is detected directly speed of approach and distance to trailer could cause you to lose ahead. When approaching a a vehicle ahead. control of the vehicle and crash. detected pedestrian too quickly, FPB provides a red flashing alert on Minor brake pedal pulsations or Turn the system to Alert or Off the windshield and rapidly beeps or pedal movement during this time is when towing a trailer. normal and the brake pedal should pulses the driver seat. FPB can continue to be applied as needed. provide a boost to braking or IBA will automatically disengage A system unavailable message may automatically brake the vehicle. This only when the brake pedal is display if: system includes Intelligent Brake Assist (IBA), and the Forward released. . The front of the vehicle or Automatic Braking (FAB) system windshield is not clean. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 265 may also respond to pedestrians. Detecting the Pedestrian See Forward Automatic Braking Warning (Continued) Ahead (FAB) 0 263. . Due to poor visibility, The FPB system can detect and including nighttime alert to pedestrians in a forward conditions, fog, rain, gear at speeds between 8 km/h or snow. (5 mph) and 80 km/h (50 mph). During daytime driving, the system . If the FPB sensor is blocked detects pedestrians up to a distance by dirt, snow, or ice. of approximately 40 m (131 ft). . If the headlamps or FPB alerts and automatic braking During nighttime driving, system windshield are not cleaned will not occur unless the FPB performance is very limited. or in proper condition. system detects a pedestrian. When Be ready to take action and apply a nearby pedestrian is detected { Warning the brakes. For more information, directly in front of the vehicle, the see Defensive Driving 0 198. pedestrian ahead indicator will FPB does not provide an alert or display amber. Keep the windshield, headlamps, automatically brake the vehicle, and FPB sensor clean and in unless it detects a pedestrian. Front Pedestrian Alert good repair. FPB may not detect pedestrians, including children: FPB can be set to Off, Alert, or Alert . When the pedestrian is not and Brake through vehicle directly ahead, fully visible, personalization. See Collision/ or standing upright, or when “ Detection Systems under Vehicle part of a group. ” Personalization 0 167. With Head-Up Display (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

266 Driving and Operating help to avoid some very low speed pedestrian crashes or reduce Warning (Continued) pedestrian injury. FPB can automatically brake to detected not need service. To override pedestrians between 8 km/h (5 mph) Automatic Braking, firmly press and 80 km/h (50 mph). Automatic the accelerator pedal, if it is safe to do so. Without Head-Up Display braking levels may be reduced under certain conditions, such as When the vehicle approaches a higher speeds. Automatic Braking can be disabled pedestrian ahead too rapidly, the through vehicle personalization. See red FPB alert display will flash on If this happens, Automatic Braking “Front Pedestrian Detection” in the windshield. Eight rapid may engage the Electric Parking Brake (EPB) to hold the vehicle at a “Collision/Detection Systems” under high-pitched beeps will sound from Vehicle Personalization 0 167. the front, or both sides of the Safety stop. Release the EPB. A firm press Alert Seat will pulse five times. of the accelerator pedal will also When this Pedestrian Alert occurs, release Automatic Braking and { Warning the brake system may prepare for the EPB. Using the Front Pedestrian driver braking to occur more rapidly which can cause a brief, mild { Warning Braking system while towing a deceleration. Continue to apply the trailer could cause you to lose brake pedal as needed. Cruise FPB may alert or automatically control of the vehicle and crash. control may be disengaged when brake the vehicle suddenly in Turn the system to Alert or Off the Front Pedestrian Alert occurs. situations where it is unexpected when towing a trailer. and undesired. It could falsely Automatic Braking alert or brake for objects similar in Cleaning the System If FPB detects it is about to crash shape or size to pedestrians, into a pedestrian directly ahead, and including shadows. This is normal If FPB does not seem to operate the brakes have not been applied, operation and the vehicle does properly, cleaning the outside of the windshield in front of the rearview FPB may automatically brake (Continued) moderately or brake hard. This can mirror may correct the issue. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 267 Side Blind Zone behind. The LCA warning display LCA Detection Zones will light up in the corresponding Alert (SBZA) outside side mirror and will flash if If equipped, the SBZA system is a the turn signal is on. lane-changing aid that assists drivers with avoiding crashes that { Warning occur with moving vehicles in the side blind zone (or spot) areas. LCA does not alert the driver to When the vehicle is in a forward vehicles outside of the system gear, the left or right side mirror detection zones, pedestrians, display will light up if a moving bicyclists, or animals. It may not vehicle is detected in that blind provide alerts when changing 1. SBZA Detection Zone zone. If the turn signal is activated lanes under all driving conditions. 2. LCA Detection Zone and a vehicle is also detected on Failure to use proper care when the same side, the display will flash The LCA sensor covers a zone of changing lanes may result in approximately one lane over from as an extra warning not to change injury, death, or vehicle damage. lanes. Since this system is part of both sides of the vehicle, or 3.5 m Before making a lane change, the Lane Change Alert (LCA) (11 ft). The height of the zone is always check mirrors, glance over system, read the entire LCA section approximately between 0.5 m (1.5 ft) before using this feature. your shoulder, and use the turn and 2 m (6 ft) off the ground. The signals. Side Blind Zone Alert (SBZA) Lane Change Alert (LCA) warning area starts at approximately the middle of the vehicle and goes If equipped, the LCA system is a back 5 m (16 ft). Drivers are also lane-changing aid that assists warned of vehicles rapidly drivers with avoiding lane change approaching from up to 25 m (82 ft) crashes that occur with moving behind the vehicle. vehicles in the side blind zone (or spot) areas or with vehicles rapidly approaching these areas from GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

268 Driving and Operating How the System Works or rapidly approaching that zone. that extend back from the side of If the turn signal is activated in the the vehicle do not move further back The LCA symbol lights up in the same direction as a detected when a trailer is towed. Use caution side mirrors when the system vehicle, this display will flash as an while changing lanes when towing a detects a moving vehicle in the next extra warning not to change lanes. trailer. LCA may alert to objects lane over that is in the side blind attached to the vehicle, such as a zone or rapidly approaching that LCA is disabled when the trailer trailer, bicycle, or object extending zone from behind. A lit LCA symbol connection status is displayed. out to either side of the vehicle. indicates it may be unsafe to A DIC message may display. The Attached objects may also interfere change lanes. Before making a lane SBZA system still operates. with the detection of vehicles. This change, check the LCA display, LCA can be disabled through is normal system operation; the check mirrors, glance over your vehicle personalization. See Vehicle vehicle does not need service. shoulder, and use the turn signals. Personalization 0 167. If LCA is disabled by the driver, the LCA LCA may not always alert the driver mirror displays will not light up. to vehicles in the next lane over, especially in wet conditions or when When the System Does Not driving on sharp curves. The system Seem to Work Properly does not need to be serviced. The system may light up due to The LCA system requires some Left Side Mirror Right Side Mirror guardrails, signs, trees, shrubs, and driving for the system to calibrate to Display Display other non-moving objects. This is maximum performance. This normal system operation; the When the vehicle is started, both calibration may occur more quickly if vehicle does not need service. the vehicle is driving on a straight outside mirror LCA displays will highway road with traffic and LCA may not operate when the LCA briefly come on to indicate the sensors in the left or right corners of system is operating. When the roadside objects (e.g., guardrails, barriers). the rear bumper are covered with vehicle is in a forward gear, the left mud, dirt, snow, ice, or slush, or in or right side mirror display will light LCA displays may not come on heavy rainstorms. For cleaning up if a moving vehicle is detected in when passing a vehicle quickly, for instructions, see "Washing the the next lane over in that blind zone a stopped vehicle, or when towing a Vehicle" under Exterior Care 0 403. trailer. The LCA detection zones GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 269 If the DIC still displays the system of the Lane Keep Assist (LKA) unavailable message after cleaning system, read the entire LKA section { Warning both sides of the vehicle toward the before using this feature. rear corners of the vehicle, see your The LKA system does not dealer. Lane Keep Assist (LKA) continuously steer the vehicle. It may not keep the vehicle in the If the LCA displays do not light up If equipped, LKA may help avoid lane or give a Lane Departure when moving vehicles are in the crashes due to unintentional lane Warning (LDW) alert, even if a side blind zone or are rapidly departures. It may assist by gently lane marking is detected. approaching this zone and the turning the steering wheel if the system is clean, the system may vehicle approaches a detected lane The LKA and LDW systems need service. Take the vehicle to marking without using a turn signal may not: your dealer. in that direction. It may also provide . Provide an alert or enough Radio Frequency Information a Lane Departure Warning (LDW) steering assist to avoid a system alert as the lane marking is lane departure or crash. See Radio Frequency Statement crossed. The LKA system will not 0 443. assist or provide an LDW alert if it . Detect lane markings under detects that you are actively poor weather or visibility Lane Departure steering. Override LKA by turning conditions. This can occur if the windshield or Warning (LDW) the steering wheel. LKA uses a camera to detect lane markings headlamps are blocked by If equipped, LDW may help avoid between 60 km/h (37 mph) and dirt, snow, or ice, if they are crashes due to unintentional lane 180 km/h (112 mph). not in proper condition, or if departures. It may provide a the sun shines directly into warning if the vehicle is crossing a the camera. detected lane marking without using . Detect road edges. a turn signal in the lane departure direction. Since this system is part . Detect lanes on winding or hilly roads. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

270 Driving and Operating How the System Works steering, an alert, chime, or DIC Warning (Continued) message may be provided. Move The LKA camera sensor is on the the steering wheel to dismiss. If LKA only detects lane markings windshield ahead of the rearview on one side of the road, it will mirror. When the System Does Not only assist or provide an LDW To turn LKA on and off, press A Seem to Work Properly alert when approaching the lane on the center stack. The system performance may be on the side where it has detected affected by: a lane marking. Even with LKA When on, A is green if LKA is and LDW, you must steer the available to assist and provide LDW . Close vehicles ahead. vehicle. Always keep your alerts. It may assist by gently . Sudden lighting changes, such attention on the road and turning the steering wheel and as when driving through tunnels. maintain proper vehicle position display A as amber if the vehicle . Banked roads. within the lane, or vehicle approaches a detected lane marking damage, injury, or death could without using a turn signal in that . Roads with poor lane markings, occur. Always keep the direction. It may also provide an such as two-lane roads. windshield, headlamps, and LDW alert by flashing A amber If the LKA system is not functioning camera sensors clean and in as the lane marking is crossed. properly when lane markings are good repair. Do not use LKA in Additionally, there may be three clearly visible, cleaning the bad weather conditions. beeps, or the driver seat may pulse windshield may help. three times, on the right or left, A camera blocked message may depending on the lane departure display if the camera is blocked. direction. { Warning Cleaning the outside of the Take Steering windshield behind the rearview Using LKA while towing a trailer mirror may correct the issue. Some The LKA system does not or on slippery roads could cause driver assistance systems may have continuously steer the vehicle. loss of control of the vehicle and reduced performance or not work at If LKA does not detect active driver a crash. Turn the system off. all. An LKA or LDW unavailable message may display if the systems GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 271 are temporarily unavailable. This Fuel Recommended Fuel message could be due to a blocked camera. The LKA system does not (Except 6.2L V8 Engine) need service. Clean the outside of Top Tier Fuel For diesel engine vehicles, see the windshield behind the rearview GM recommends the use of TOP “Fuel for Diesel Engines” in the mirror. TIER Detergent Gasoline to keep Duramax diesel supplement. LKA assistance and/or LDW alerts the engine clean, reduce engine If the vehicle has a yellow fuel cap may occur due to tar marks, deposits, and maintain optimal or a yellow sticker on the fuel door, shadows, cracks in the road, vehicle performance. Look for the E85 or FlexFuel can be used. If the temporary or construction lane TOP TIER Logo or see vehicle does not have a yellow fuel markings, or other road www.toptiergas.com for a list of TOP cap or yellow sticker, do not use imperfections. This is normal system TIER Detergent Gasoline marketers gasoline with ethanol levels greater operation; the vehicle does not need and applicable countries. than 15% by volume. See E85 or service. Turn LKA off if these FlexFuel 0 272. conditions continue. Use regular unleaded gasoline meeting ASTM specification D4814 with a posted octane rating of 87 or higher. Do not use gasoline with a posted octane rating of less than 87, as this may cause engine knock and will lower fuel economy. Recommended Fuel (6.2L V8 Engine) Do not use any fuel labeled E85 or FlexFuel. Do not use gasoline with ethanol levels greater than 15% by volume. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

272 Driving and Operating Premium unleaded gasoline Fuels in Foreign meeting ASTM specification D4814 Caution (Continued) with a posted octane rating of 93 is Countries . For vehicles that are not highly recommended for best The U.S., Canada, and Mexico post FlexFuel, fuel labeled performance and fuel economy. fuel octane ratings in anti-knock greater than 15% ethanol by Unleaded gasoline with an octane index (AKI). For fuel not to use in a volume, such as mid-level rated as low as 87 can be used. foreign country, see Prohibited ethanol blends (16 50% Using unleaded gasoline rated – Fuels 0 272. below 93 octane, however, will lead ethanol), E85, or FlexFuel. to reduced acceleration and fuel . Fuel with any amount of Fuel Additives economy. If knocking occurs, use a methanol, methylal, gasoline rated at 93 octane as soon ferrocene, and aniline. TOP TIER Detergent Gasoline is as possible, otherwise, the engine These fuels can corrode highly recommended for use with could be damaged. If heavy metal fuel system parts or your vehicle. If your country does knocking is heard when using damage plastic and rubber not have TOP TIER Detergent gasoline with a 93 octane rating, the parts. Gasoline, add ACDelco Fuel engine needs service. System Treatment Plus−Gasoline to . Fuel containing metals such the vehicle’s gasoline fuel tank at as methylcyclopentadienyl Prohibited Fuels every oil change or 15,000 km manganese tricarbonyl (9,000 mi), whichever occurs first. (MMT), which can damage TOP TIER Detergent Gasoline and Caution the emissions control ACDelco Fuel System Treatment system and spark plugs. Plus−Gasoline will help keep your Do not use fuels with any of the . Fuel with a posted octane vehicle’s engine fuel deposit free following conditions; doing so rating of less than the and performing optimally. may damage the vehicle and void recommended fuel. Using its warranty: this fuel will lower fuel E85 or FlexFuel (Continued) economy and performance, Vehicles with a yellow fuel sticker and may decrease the life of on the fuel door can use either the emissions catalyst. unleaded gasoline or fuel containing GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 273 up to 85% ethanol (E85). All other The starting characteristics of E85 vehicles should use only the or FlexFuel make it unsuitable for Caution unleaded gasoline as described in use when temperatures fall below Recommended Fuel (Except 6.2L −18 °C (0 °F). Use gasoline or add Do not use fuel containing V8 Engine) 0 271 or Recommended gasoline to the E85 or FlexFuel. methanol. It can corrode metal Fuel (6.2L V8 Engine) 0 271. parts in the fuel system and also Because E85 or FlexFuel has less damage plastic and rubber parts. The use of E85 or FlexFuel is energy per liter (gallon) than That damage would not be encouraged when the vehicle is gasoline, the vehicle will need to be covered under the vehicle designed to use it. E85 or FlexFuel refilled more often. See Filling the warranty. is made from renewable sources. Tank 0 273. To help locate fuel stations that The only GM approved aftermarket carry E85 or FlexFuel, the U.S. additive is ACDelco Fuel System Filling the Tank Department of Energy has an Treatment Plus-FlexFuel. Follow the If the vehicle has a diesel engine, alternative fuel website. See instructions on the bottle for proper see the Duramax diesel supplement www.afdc.energy.gov/afdc/locator/ use. This product is available at for more information. stations. your GM dealer. E85 or FlexFuel should meet ASTM { Warning Specification D 5798 or CAN/ Caution CGSB–3.512 in Canada. Do not use Fuel vapors and fuel fires burn the fuel if the ethanol content is Some additives are not violently and can cause injury or greater than 85%. Fuel mixtures that compatible with E85 or FlexFuel death. do not meet ASTM or CGSB and can harm the vehicle's fuel . To help avoid injuries to you specifications can affect driveability system. Use only additives and others, read and follow and could cause the malfunction approved by GM for E85 or all the instructions on the indicator lamp to come on. FlexFuel vehicles. Damage fuel pump island. caused by unapproved additives would not be covered by the (Continued) vehicle warranty. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

274 Driving and Operating

Warning (Continued) Warning (Continued) . Turn off the engine when . Fuel spills. refueling. . Potential fuel fires. . Keep sparks, flames, and smoking materials away Be careful not to spill fuel. Wait a from fuel. few seconds after you have finished . Do not leave the fuel pump pumping before removing the unattended. nozzle. Clean fuel from painted surfaces as soon as possible. See . Avoid using electronic 0 devices while refueling. Exterior Care 403. The fuel door is on the driver side of . Do not reenter the vehicle the vehicle. The vehicle has a { Warning while pumping fuel. capless refueling system and does . Keep children away from not have a fuel cap. The filling If a fire starts while you are the fuel pump and never let nozzle must be fully inserted and refueling, do not remove the children pump fuel. latched prior to starting fuel flow. nozzle. Shut off the flow of fuel by . Fuel can spray out if the shutting off the pump or by refueling nozzle is inserted { Warning notifying the station attendant. too quickly. This spray can Leave the area immediately. happen if the tank is nearly Overfilling the fuel tank by more full, and is more likely in hot than three clicks of a standard fill weather. Insert the refueling nozzle may cause: nozzle slowly and wait for . Vehicle performance issues, any hiss noise to stop prior including engine stalling and to beginning to flow fuel. damage to the fuel system. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 275 Filling the Tank With a Portable 3. Remove and clean the funnel Gas Can adapter and return to the Warning (Continued) storage location. If the vehicle runs out of fuel and . Bring the fill nozzle in must be filled from a portable contact with the inside of gas can: Filling a Portable Fuel the fill opening before Container operating the nozzle. Contact should be { Warning maintained until the filling is complete. Never fill a portable fuel container . Do not smoke while while it is in the vehicle. Static pumping fuel. electricity discharge from the 1. Locate the capless funnel container can ignite the fuel . Avoid using electronic adapter from inside the vehicle. vapor. You can be badly burned devices. 2. Insert and latch the funnel into and the vehicle damaged if this the capless fuel system. occurs. To help avoid injury to you and others: { Warning . Dispense fuel only into approved containers. Attempting to refuel without using . Do not fill a container while the funnel adapter may cause fuel it is inside a vehicle, in a spillage and damage the capless vehicle's trunk, pickup bed, fuel system. This could cause a or on any surface other than fire and you or others could be the ground. badly burned and the vehicle (Continued) could be damaged. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

276 Driving and Operating Trailer Towing important for your safety and that of Warning (Continued) your passengers. Read this section carefully before pulling a trailer. General Towing trailer brakes are inadequate for Information the load, the vehicle may not stop When towing a trailer: as expected. You and others . Become familiar with and follow Only use towing equipment that has could be seriously injured. The all state and local laws that been designed for the vehicle. vehicle may also be damaged, apply to trailer towing. These Contact your dealer or trailering and the repairs would not be requirements vary from state to dealer for assistance with preparing covered by the vehicle warranty. state. the vehicle to tow a trailer. Read the Pull a trailer only if all the steps in entire section before towing a trailer. . State laws may require the use this section have been followed. of extended side view mirrors. To tow a disabled vehicle, see Ask your dealer for advice and 0 Even if not required, you should Towing the Vehicle 398. To tow information about towing a trailer install extended side view the vehicle behind another vehicle with the vehicle. mirrors if your visibility is limited such as a motor home, see or restricted while towing. Recreational Vehicle Towing 0 399. Driving with a Trailer . Do not tow a trailer during the first 800 km (500 mi) of vehicle Driving Characteristics Trailering is different than just use to prevent damage to the driving the vehicle by itself. and Towing Tips engine, axle, or other parts. Trailering means changes in handling, acceleration, braking, . It is recommended to perform { Warning durability, and fuel economy. the first oil change before heavy You can lose control when towing Successful, safe trailering takes towing. a trailer if the correct equipment is correct equipment, and it has to be . During the first 800 km (500 mi) not used or the vehicle is not used properly. of trailer towing, do not drive driven properly. For example, The following information has many over 80 km/h (50 mph) and do if the trailer is too heavy or the time-tested, important trailering tips not make starts at full throttle. (Continued) and safety rules. Many of these are GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 277 . Vehicles can tow in D (Drive). If equipped with Lane Change Alert Tow/Haul Mode is recommended (LCA), the LCA detection zones that Warning (Continued) for heavier trailers. See Tow/ extend back from the side of the Haul Mode 0 234. If the vehicle do not move further back . Adjust the climate control transmission downshifts too when a trailer is towed. Use caution system to a setting that often, a lower gear may be while changing lanes when towing a brings in only outside air. selected using Manual Mode. trailer. See “Climate Control 0 Systems” in the Index. See Manual Mode 232. If equipped with Rear Cross Traffic If equipped, the following driver Alert (RCTA), use caution while For more information about assistance features should be backing up when towing a trailer, as carbon monoxide, see Engine 0 turned off when towing a trailer: the RCTA detection zones that Exhaust 228. . Cruise Control extend out from the back of the vehicle do not move further back Towing a trailer requires experience. . Lane Keep Assist (LKA) when a trailer is towed. The combination of the vehicle and . Park Assist trailer is longer and not as responsive as the vehicle itself. Get . Reverse Automatic { Warning used to the handling and braking of Braking (RAB) To prevent serious injury or death the combination by driving on a If equipped, the following driver from carbon monoxide (CO), level road surface before driving on assistance features should be when towing a trailer: public roads. turned to alert or off when towing a . Do not drive with the The trailer structure, the tires, and trailer: liftgate, trunk/hatch, the brakes must all be rated to carry . Forward Automatic or rear-most window open. the intended cargo. Inadequate Braking (FAB) trailer equipment can cause the . Fully open the air outlets on . Intelligent Brake Assist (IBA) or under the instrument combination to operate in an panel. unexpected or unsafe manner. . Front Pedestrian Braking (FPB) Before driving, inspect all trailer (Continued) hitch parts and attachments, safety chains, electrical connectors, lamps, GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

278 Driving and Operating tires, and mirrors. See Towing Passing Making Turns Equipment 0 285. If the trailer has More passing distance is needed electric brakes, start the when towing a trailer. The Caution combination moving and then combination of the vehicle and manually apply the trailer brake trailer will not accelerate as quickly Turn more slowly and make wider controller to check the trailer brakes and is much longer than the vehicle arcs when towing a trailer to work. During the trip, occasionally alone. It is necessary to go much prevent damage to your vehicle. check that the cargo and trailer are farther beyond the passed vehicle Making very sharp turns could secure and that the lamps and any before returning to the lane. Pass cause the trailer to contact the trailer brakes are working. on level roadways. Avoid passing vehicle. Towing with a Stability Control on hills if possible. System Backing Up Make wider turns than normal when towing, so trailer will not go over soft When towing, the stability control Hold the bottom of the steering system might be heard. The system shoulders, over curbs, or strike road wheel with one hand. To move the signs, trees, or other objects. reacts to vehicle movement caused trailer to the left, move that hand to by the trailer, which mainly occurs Always signal turns well in advance. the left. To move the trailer to the Do not steer or brake suddenly. during cornering. This is normal right, move that hand to the right. when towing heavier trailers. Always back up slowly and, Driving on Grades Following Distance if possible, have someone Reduce speed and shift to a lower guide you. Stay at least twice as far behind the gear before starting down a long or vehicle ahead as you would when steep downhill grade. If the driving without a trailer. This can transmission is not shifted down, the help to avoid heavy braking and brakes may overheat and result in sudden turns. reduced braking efficiency. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 279 The vehicle can tow in D (Drive). Parking on Hills Leaving After Parking on a Hill Shift the transmission to a lower 1. Apply and hold the brake gear if the transmission shifts too { Warning pedal. often under heavy loads and/or hilly conditions. To prevent serious injury or death, . Start the engine. When towing at higher altitudes, always park your vehicle and . Shift into a gear. trailer on a level surface when engine coolant will boil at a lower . Release the parking brake. temperature than at lower altitudes. possible. If the engine is turned off 2. Let up on the brake pedal. immediately after towing at high When parking your vehicle and your 3. Drive slowly until the trailer is altitude on steep uphill grades, the trailer on a hill: clear of the chocks. vehicle could show signs similar to engine overheating. To avoid this, 1. Press the brake pedal, but do 4. Stop and have someone pick let the engine run, preferably on not shift into P (Park) yet. Turn up and store the chocks. level ground, with the transmission the wheels into the curb if Launching and Retrieving facing downhill or into traffic if in P (Park) for a few minutes before a Boat turning the engine off. If the facing uphill. overheat warning comes on, see 2. Have someone place chocks Backing the Trailer into the Water 0 Engine Overheating 331. under the trailer wheels. Viewing Systems 3. When the wheel chocks are in { Warning If equipped, the viewing systems on place, gradually release the . Have all passengers get out the vehicle can improve visibility brake pedal to allow the chocks of the vehicle before while hitching, backing, and driving to absorb the load of the trailer. backing onto the sloped part with a trailer. See Driver Assistance 4. Reapply the brake pedal. Then of the ramp. Lower the Systems 0 253. apply the parking brake and driver and passenger side shift into P (Park). windows before backing onto the ramp. This will 5. Release the brake pedal. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

280 Driving and Operating Disconnect the wiring to the trailer 6. Reapply the brake pedal. Then Warning (Continued) before backing the trailer into the apply the parking brake and water to prevent damage to the shift into P (Park). provide a means of escape electrical circuits on the trailer. 7. Release the brake pedal. in the unlikely event the Reconnect the wiring to the trailer vehicle slides into the water. after removing the trailer from the Pulling the Trailer from the Water . If the boat launch surface is water. If the trailer has electric To pull the trailer of the water: slippery, have the driver brakes that can function when the remain in the vehicle with trailer is submerged, it might help to 1. Press and hold the brake the brake pedal applied leave the electrical trailer connector pedals. while the boat is being attached to maintain trailer brake 2. Start the engine and shift launched. The boat launch functionality while on the boat ramp. into gear. can be especially slippery at To back the trailer into the water: low tide when part of the 3. Release the parking brake. ramp was previously 1. If equipped, place the vehicle 4. Let up on the brake pedal. submerged at high tide. Do in four-wheel-drive high. not back onto the ramp to 5. Drive slowly until the tires are 2. Slowly back down the boat clear of the chocks. launch the boat if you are ramp until the boat is floating, not sure the vehicle can but no further than necessary. 6. Stop and have someone pick maintain traction. up and store the chocks. 3. Press and hold the brake . Do not move the vehicle if pedal, but do not shift into 7. Slowly pull the trailer from the someone is in the path of P (Park) yet. water. the trailer. Some parts of the 4. Have someone place chocks 8. Once the vehicle and trailer trailer might be underwater have been driven from the and not visible to people under the front wheels of the vehicle. sloped part of the boat ramp, who are assisting in the vehicle can be shifted from launching the boat. 5. Gradually release the brake four-wheel-drive high. Shift into pedal to allow the chocks to absorb the load of the trailer. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 281 the drive mode that is Engine Cooling When Trailer Successful, safe trailering takes appropriate for the road Towing correct equipment, and it has to be conditions. used properly. The cooling system may temporarily overheat during severe operating The following information has many Caution conditions. See Engine Overheating time-tested, important trailering tips 0 331. and safety rules. Many of these are If the vehicle tires begin to spin important for your safety and that of and the vehicle begins to slide Trailer Towing your passengers. Read this section toward the water, remove your carefully before pulling a trailer. foot from the accelerator pedal If equipped with a diesel engine, and apply the brake pedal. Seek see the Duramax diesel Trailer Weight help to have the vehicle towed up supplement. the ramp. { Warning Caution Never exceed the towing capacity Maintenance when Trailer Towing a trailer improperly can for your vehicle. Towing damage the vehicle and result in The vehicle needs service more costly repairs not covered by the Safe trailering requires monitoring often when used to tow trailers. See vehicle warranty. To tow a trailer the weight, speed, altitude, road Maintenance Schedule 0 415. It is correctly, follow the directions in grades, outside temperature, and especially important to check the this section and see your dealer how frequently the vehicle is used to automatic transmission fluid, engine for important information about tow a trailer. oil, axle lubricant, belts, cooling towing a trailer with the vehicle. system, and brake system before Trailer Weight Ratings and during each trip. Trailering is different than just When towing a trailer, the combined Check periodically to see that all driving the vehicle by itself. weight of the vehicle, vehicle nuts and bolts on the trailer hitch Trailering means changes in contents, trailer, and trailer contents are tight. handling, acceleration, braking, durability, and fuel economy. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

282 Driving and Operating must be below all of the maximum A trailering information label on the To check that the weight of the weight ratings for the vehicle, driver's side door B-pillar shows tow vehicle and trailer are within the including: rating information for the vehicle. GCWR for the vehicle, follow these . GCWR: Gross Combined Weight steps: Rating { Warning 1. Start with the "curb weight" . GVWR: Gross Vehicle Weight from the Trailering Information You and others could be seriously Label. Rating injured or killed if the trailer is too . Maximum Trailer Weight Rating heavy or the trailer brakes are 2. Add the weight of the trailer inadequate for the load. The loaded with cargo and ready . GAWR-RR: Gross Axle Weight for the trip. Rating-Rear vehicle may be damaged, and the repairs would not be covered by 3. Add the weight of all . Maximum Trailer Tongue Weight the vehicle warranty. passengers. Rating Only tow a trailer if all the steps in 4. Add the weight of all cargo in See “Weight-Distributing Hitch this section have been followed. the vehicle. Adjustment” under Towing Ask your dealer for advice and Equipment 0 285 to determine if 5. Add the weight of hitch information about towing a trailer. equalizer bars are required to obtain hardware such as a draw bar, the maximum trailer weight rating. ball, load equalizer bars, Gross Combined Weight or sway bars. See “Trailer Brakes” under Towing Equipment 0 285 to determine if Rating (GCWR) 6. Add the weight of any accessories or aftermarket brakes are required based on your GCWR is the total allowable weight trailer's weight. equipment added to the of the completely loaded vehicle vehicle. The only way to be sure the weight and trailer including any fuel, is not exceeding any of these passengers, cargo, equipment, and The resulting weight cannot exceed ratings is to weigh the tow vehicle accessories. Do not exceed the the GCWR value shown on the and trailer combination, fully loaded GCWR for your vehicle. The GCWR Trailering Information Label. for the trip, getting individual for the vehicle is on the Trailering weights for each of these items. Information Label. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 283 The gross combined weight can Maximum Trailer Weight or cargo in the tow vehicle. To also be confirmed by weighing the determine the maximum trailer The maximum trailer weight rating is truck and trailer on a public scale. weight rating: calculated assuming the tow vehicle The truck and trailer should be has a driver, a front seat passenger, 1. Find the Gross Combined loaded for the trip with passengers and all required trailering Weight Rating for the vehicle and cargo. equipment. This value represents as shown on the Trailering the heaviest trailer the vehicle can Information Label. tow, but it may be necessary to 2. Subtract the following: reduce the trailer weight to stay within the GCWR, GVWR, maximum . Vehicle curb weight as trailer tongue load, or GAWR-RR for shown on the Trailering the vehicle. Information Label Use the Tow Rating Guide . Weight of the driver and (my.gmc.com/learn) to determine passengers how much the trailer can weigh, . Weight of cargo in the tow based on the vehicle model and vehicle options. . Hitch hardware weight Weights listed apply for including the draw bar, and Gross Vehicle Weight conventional trailers unless equalizer bars otherwise noted. Rating (GVWR) . Weight of accessories For information about the vehicle's The weight of the trailer, including added to the vehicle the trailer and all cargo in the trailer, maximum load capacity, see Vehicle A step bumper trailer hitch can only 0 cannot exceed the maximum trailer Load Limits 209. When calculating support a total trailer weight up to the GVWR with a trailer attached, weight rating for the vehicle. The allowable trailer weight might be 2,271 kg (5,000 lb). If a trailer hitch the trailer tongue weight must be ball is added to the step bumper, included as part of the weight the reduced by the weight of the vehicle options, accessories, passengers, check the hitch ball rating to be sure vehicle is carrying. it is higher than the total trailer weight. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

284 Driving and Operating Maximum Trailer Tongue Do not exceed a maximum trailer Weight Rating tongue weight of 567 kg (1,250 lb) for a conventional trailer hitch. The Maximum Trailer Tongue Weight Rating is the allowable The trailer tongue weight contributes trailer tongue weight that the vehicle to the Gross Vehicle Weight (GVW). can support using a conventional GVW includes the curb weight of trailer hitch. It may be necessary to your vehicle, any passengers, reduce the overall trailer weight to cargo, equipment, and the trailer stay within the maximum trailer tongue weight. Vehicle options, tongue weight rating while still passengers, cargo, and equipment maintaining the correct trailer load reduce the maximum allowable balance. tongue weight the vehicle can carry, which also reduces the maximum The trailer tongue weight (1) should allowable trailer weight. be 10–15% of the total loaded trailer Trailer Load Balance weight (2). Some specific trailer types, such as boat trailers, fall The correct trailer load balance outside of this range. Always refer must be maintained to ensure trailer to the trailer owner’s manual for the stability. Incorrect load balance is a recommended trailer tongue weight leading cause of trailer sway. for each trailer. Never exceed the maximum loads for the vehicle, hitch and trailer. The trailer load balance percentage is calculated as: weight (1) divided by weight (2) times 100. The Maximum Trailer Tongue Weight Rating for a conventional trailer hitch is shown on the Trailering Information Label. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 285 After loading the trailer, separately half of the maximum allowable weigh the trailer and then the trailer tongue weight for the vehicle or tongue and calculate the trailer load 227 kg (500 lb), whichever is less. balance percentage to see if the weights and distribution are Rear Gross Axle Weight Rating appropriate for your vehicle. If the (GAWR-RR) trailer weight is too high, it may be The GAWR-RR is the total weight possible to transfer some of the that can be supported by the rear cargo into your vehicle. If the trailer axle of the vehicle. Do not exceed tongue weight is too high or too low, the GAWR-RR for the vehicle, with it may be possible to rearrange the tow vehicle and trailer fully some of the cargo inside of the loaded for the trip including the trailer. weight of the trailer tongue. If using The GAWR-RR for the vehicle is on Do not exceed the maximum a weight-distributing hitch, do not the Trailering Information Label. allowable tongue weight for the exceed the GAWR-RR before vehicle. Use the shortest hitch applying the weight distribution Ask your dealer for trailering extension that will position the hitch spring bars. information or assistance. ball closest to the vehicle. This will help reduce the effect of trailer Towing Equipment tongue weight on the trailer hitch Hitches and rear axle. Always use the correct hitch If a cargo carrier is used in the equipment for your vehicle. trailer hitch receiver, choose a Crosswinds, large trucks going by, carrier that positions the load as and rough roads can affect the close to the vehicle as possible. trailer and the hitch. Make sure the total weight, including the carrier, is no more than Proper hitch equipment for your vehicle helps maintain control of the vehicle-trailer combination. Many GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

286 Driving and Operating trailers can be towed using a Avoid sharp turns when using a Weight-Distributing Hitch and weight-carrying hitch which has a step-bumper hitch to prevent Adjustment coupler latched to the hitch ball, or a damage. Make wider turns to tow eye latched to a pintle hook. prevent contact between your trailer A weight-distributing hitch may be Other trailers may require a and your bumper. useful with some trailers. Use the following guidelines to determine if a weight-distributing hitch that uses Consider using mechanical sway spring bars to distribute the trailer weight-distributing hitch should controls with any trailer. Ask a be used. tongue weight between your vehicle trailering professional about sway and trailer axles. See “Maximum controls or refer to the trailer Trailer Tongue Weight” under Trailer 0 manufacturer's recommendations Towing 281 for weight limits with and instructions. various hitch types. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 287

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%

bars until the front fender height may be provided by the hitch distance (2) is approximately half manufacturer or by the trailer way between the first and second manufacturer. measurements. If the trailer being towed weighs up Tires to 2 271 kg (5,000 lb) with a factory-installed step bumper, safety . Do not tow a trailer while using a chains may be attached to the compact spare tire on the attaching points on the bumper; vehicle. otherwise, safety chains should be . Tires must be properly inflated to attached to holes on the trailer hitch. support loads while towing a Cross the safety chains under the 0 trailer. See Tires 358 for tongue of the trailer to help prevent instructions on proper tire the tongue from contacting the road 1. Front of Vehicle inflation. if it becomes separated from the 2. Body to Ground Distance Safety Chains hitch. Always leave enough slack in When using a weight-distributing the safety chains to allow the hitch, measure the front fender Always attach safety chains combination to turn. Never allow height above the front axle between the vehicle and the trailer. safety chains to drag on the ground. distance (2) before and after Instructions about safety chains connecting trailer. Adjust the spring GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

288 Driving and Operating Trailer Brakes requires the installation of a trailer connector, which is available Loaded trailers over 900 kg through your dealer. (2,000 lb) must be equipped with brake systems and with brakes for If equipped, the trailer wiring each axle. Trailer braking equipment harness, with a 7-pin connector and conforming to Canadian Standards a 4-pin connector, is mounted on Association (CSA) requirement the vehicle's rear bumper. CAN3-D313, or its equivalent, is recommended. State or local regulations may require trailers to have their own braking system if the loaded weight of the trailer exceeds certain 1. Left Turn/Brake minimums that can vary from state 2. Taillamps to state. Read and follow the 3. Reverse Lamps instructions for the trailer brakes so 4. Battery Feed they are installed, adjusted, and 5. Right Turn/Brake maintained properly. Never attempt 6. Electric Brakes to tap into your vehicle's hydraulic 7. Ground brake system. If you do, both the Use only a round, seven-wire vehicle anti-lock brakes and the 1. Ground connector with flat blade terminals trailer brakes may not function, 2. Taillamps which could result in a crash. meeting SAE J2863 specifications 3. Left Turn/Brake for proper electrical connectivity. Trailer Wiring Harness 4. Right Turn/Brake If the vehicle is not equipped with a trailer connector on the rear bumper, a 7-wire trailering harness is tied to the vehicles frame. The harness GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 289

Electric Brake Control Wiring Ground Black The trailer bulbs can be observed Provisions by starting the trailer light test sequence. See Trailering App The fuse for the electric trailer brake If the vehicle is not equipped with 0 296. an integrated trailer brake controller, circuit is in the engine compartment and the trailer has electric brakes, a fuse block, but the wires may not be Turn Signals When Towing a trailer brake controller needs to be connected. They should be Trailer installed on the vehicle. The brake connected by your dealer or a controller should be installed by qualified service center. When properly connected, the trailer turn signals will illuminate to indicate your dealer or a qualified service Refer to the aftermarket electric center. the vehicle is turning, changing trailer brake controller owner's lanes, or stopping. When towing a If equipped, there is a trailer brake manual to determine wire color trailer, the arrows on the instrument jumper harness provided with the coding of the electric trailer brake cluster will illuminate even if the vehicle. The connector on the trailer controller. The wire colors on the trailer is not properly connected or brake jumper harness is attached to brake controller may be different the bulbs are burned out. a mating connector to the left of the from the vehicle. Tow/Haul Mode steering wheel behind the knee Trailer Lamps bolster. The four blunt cut wires on For instructions on how to enter the jumper harness need to be Always check all trailer lamps are Tow/Haul Mode, see Driver Mode connected to an aftermarket electric working at the beginning of each Control 0 246. trailer brake controller. The harness trip, and periodically on longer trips. contains the following circuits: Tow/Haul assists when pulling a If equipped, the trailering app will heavy trailer or a large or heavy Electric Trailer monitor the brake lamps, turn signal load. See Tow/Haul Mode 0 234. Blue Brakes lamps, running lamps and reverse lamps on the trailer. DIC messages Tow/Haul Mode is designed to be Red/Violet or most effective when the vehicle and Battery Feed may be displayed if lighting circuit Red/Black issues are detected on the trailer. trailer combined weight is at least 75% of the vehicle's Gross Brake Apply White/Blue Signal GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

290 Driving and Operating Combined Weight Rating (GCWR). ITBC system may not function fully See “Weight of the Trailer” under or at all. Make sure all of these Trailer Towing 0 281. systems are fully operational to Tow/Haul Mode is most useful when allow the ITBC system to function towing a heavy trailer or carrying a properly. large or heavy load: The ITBC system is powered This symbol is on the Trailer Brake . through rolling terrain. through the vehicle's electrical Control Panel on vehicles with an system. Turning the ignition off will . in stop-and-go traffic. ITBC system. The power output to also turn off the ITBC system. The . in busy parking lots. the trailer brakes is proportional to ITBC system is fully functional only the amount of vehicle braking. This when the ignition is in ON/RUN. Operating the vehicle in Tow/Haul available power output to the trailer Mode when lightly loaded or not brakes can be adjusted to a wide { Warning towing will not cause damage; range of trailering situations. however, it is not recommended and The ITBC system is integrated with Connecting a trailer that has an may result in unpleasant engine and air brake system may result in transmission driving characteristics the vehicle’s brake, antilock brake, reduced or complete loss of trailer and reduced fuel economy. and StabiliTrak/Electronic Stability Control (ESC) systems. In trailering braking, including increased Integrated Trailer Brake conditions that cause the vehicle’s stopping distance or trailer Control System antilock brake or StabiliTrak/ESC instability which could result in systems to activate, power sent to serious injury, death, or property The vehicle may have an Integrated the trailer's brakes will be damage. Only use the ITBC Trailer Brake Control (ITBC) system automatically adjusted to minimize system with electric or electric for use with electric trailer brakes or trailer wheel lock-up. This does not most electric over hydraulic trailer over hydraulic trailer brake imply that the trailer has systems. brake systems. These instructions StabiliTrak/ESC. apply to both types of electric trailer brakes. If the vehicle’s brake, anti-lock brake, or StabiliTrak/ESC systems are not functioning properly, the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 291 Trailer Brake Control Panel to the trailer brakes and allows adjust. Press and hold to manual application of the trailer continuously adjust the Trailer Gain. brakes. Use the ITBC control panel To turn the output to the trailer off, and the DIC trailer brake display adjust the Trailer Gain setting to 0.0. page to adjust and display power This setting can be adjusted from output to the trailer brakes. 0.0 to 10.0 with a trailer connected or disconnected. Trailer Brake DIC Display Page TRAILER OUTPUT: This displays The ITBC display page indicates: anytime a trailer with electric brakes . Trailer Gain setting is connected. Output to the trailer brakes is based on the amount of . Output to the trailer brakes vehicle braking present and relative . Trailer connection to the Trailer Gain setting. Output is . System operational status displayed from 0 to 100% for each gain setting. 1. Manual Trailer Brake Apply To display: Lever The Trailer Output will indicate “--- 2. Trailer Symbol . Scroll through the DIC menu ---” on the Trailer Brake Display 3. Trailer Gain Adjustment pages Page whenever the following occur: Buttons . Press a Trailer Gain (+) or (−) . No trailer is connected. button The trailer symbol on the control . A trailer without electric brakes panel will light amber when a trailer . Activate the Manual Trailer is connected, no DIC message with electric brakes is connected. Brake Apply Lever displays. The ITBC control panel is on the TRAILER GAIN: Press a Trailer . A trailer with electric brakes has instrument panel to the right of the Gain button to recall the current become disconnected, a CHECK steering column. See Instrument Trailer Gain setting. Each press and TRAILER WIRING message Panel 0 6. The control panel allows release of the gain buttons will then displays on the DIC. adjustment to the amount of output, change the Trailer Gain setting. referred to as Trailer Gain, available Press the Trailer Gain (+) or (−) to GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

292 Driving and Operating . There is a fault present in the 2. Adjust the Trailer Gain, using wiring to the trailer brakes, a { Warning the Trailer Gain (+) or (-) CHECK TRAILER WIRING adjustment buttons, to just message displays on the DIC. Trailer brakes that are below the point of trailer wheel over-gained or under-gained may lock-up, indicated by trailer . The ITBC system is not working not stop the vehicle and the trailer due to a fault, a SERVICE wheel squeal or tire smoke as intended and can result in a when a trailer wheel locks. TRAILER BRAKE SYSTEM crash. Always follow the message displays in the DIC. instructions to set the Trailer Gain Trailer wheel lock-up may not occur if towing a heavily loaded for the proper trailer stopping Manual Trailer Brake Apply trailer. Adjust the Trailer Gain performance. Lever to the highest allowable setting Slide this lever right to apply the for the towing condition. trailer’s electric brakes independent To adjust Trailer Gain for each 3. Readjust Trailer Gain anytime of the vehicle’s brakes. Use this towing condition: vehicle loading, trailer loading, lever to adjust Trailer Gain to 1. Drive the vehicle with the trailer or road surface conditions achieve proper power output to the attached on a level road change or if trailer wheel trailer brakes. The trailer's and the surface representative of the lock-up is noticed at any time vehicle's brake lamps will come on towing condition and free of while towing. when either vehicle brakes or traffic at about 32 - 40 km/h manual trailer brakes are applied (20 - 25 mph) and fully apply Other ITBC-Related DIC and properly connected. the Manual Trailer Brake Apply Messages Trailer Gain Adjustment Lever. TRAILER CONNECTED: This Procedure Adjusting Trailer Gain at message will briefly display when a speeds lower than 32 to trailer with electric brakes is first Trailer Gain should be set for a 40 km/h (20 to 25 mph) may connected to the vehicle. This specific trailering condition and it result in an incorrect gain message will automatically turn off must be readjusted anytime vehicle setting. in about 10 seconds. This message loading, trailer loading, or road can be acknowledged before it surface conditions change. automatically turns off. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 293 CHECK TRAILER WIRING: This To determine whether the electrical while driving, the ITBC system may message will display if: fault is on the vehicle side or trailer not be fully functional or may not . The ITBC system first side of the trailer wiring harness function at all. When traffic determines connection to a connection: conditions allow, carefully pull the trailer with electric brakes and 1. Disconnect the trailer wiring vehicle over to the side of the road then the trailer harness becomes harness from the vehicle. and turn the ignition off. Check the disconnected from the vehicle. wiring connection to the trailer and 2. Turn the ignition off. turn the ignition back on. If either of If the disconnect occurs while 3. Wait 10 seconds, then turn the these messages continues, either the vehicle is stationary, this ignition back to RUN. the vehicle or trailer needs service. message will automatically turn off in about 30 seconds. This 4. If the CHECK TRAILER A GM dealer may be able to message will also turn off if it is WIRING message reappears, diagnose and repair problems with acknowledged or if the trailer the electrical fault is on the the trailer. However, any diagnosis harness is reconnected. vehicle side. and repair of the trailer is not covered under the vehicle warranty. If the disconnect occurs while If the CHECK TRAILER WIRING Contact your trailer dealer for the vehicle is moving, this message only reappears when assistance with trailer repairs and message will continue until the connecting the trailer wiring harness trailer warranty information. ignition is turned off. This to the vehicle, the electrical fault is message will also turn off if it is on the trailer side. Trailer Sway acknowledged or if the trailer SERVICE TRAILER BRAKE Control (TSC) harness is reconnected. SYSTEM: This message will display . There is an electrical fault in the when there is a problem with the Vehicles with StabiliTrak/Electronic wiring to the trailer brakes. This ITBC system. If this message Stability Control (ESC) have a message will continue as long continues over multiple ignition Trailer Sway Control (TSC) feature. as there is an electrical fault in cycles, have the vehicle serviced. Trailer sway is unintended the trailer wiring. This message side-to-side motion of a trailer while If either the CHECK TRAILER towing. If the vehicle is towing a will also turn off if it is WIRING or SERVICE TRAILER acknowledged. trailer and the TSC detects that BRAKE SYSTEM message displays sway is increasing, the vehicle GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

294 Driving and Operating brakes are selectively applied at slow the vehicle. TSC will not Aftermarket Electronic Trailer each wheel, to help reduce function if StabiliTrak/ESC is turned Sway Control Devices excessive trailer sway. If equipped off. See Traction Control/Electronic with the Integrated Trailer Brake Stability Control 0 243. Some trailers may come equipped Control (ITBC) system, and the with an electronic device designed to reduce or control trailer sway. trailer has an electric brake system, { Warning StabiliTrak/ESC may also apply the Aftermarket equipment manufacturers also offer similar trailer brakes. Trailer sway can result in a crash devices that connect to the wiring and in serious injury or death, between the trailer and the vehicle. even if the vehicle is equipped These devices may interfere with with TSC. the vehicle’s trailer brake or other If the trailer begins to sway, systems, including integrated reduce vehicle speed by anti-sway systems, if equipped. gradually removing your foot from Messages related to trailer the accelerator. Then pull over to connections or trailer brakes could check the trailer and vehicle to appear on the DIC. The effects of help correct possible causes, these aftermarket devices may have including an improperly or on vehicle handling or trailer brake overloaded trailer, unrestrained performance is not known. cargo, improper trailer hitch configuration, or improperly { Warning If TSC is enabled, the Traction inflated or incorrect vehicle or Use of aftermarket electronic Control System (TCS)/StabiliTrak/ trailer tires. See Towing trailer sway control devices could ESC warning light will flash on the Equipment 0 285 for trailer ratings result in reduced trailer brake instrument cluster. Reduce vehicle and hitch setup performance, loss of trailer speed by gradually removing your recommendations. foot from the accelerator. If trailer brakes, or other malfunctions, and sway continues, StabiliTrak/ESC (Continued) can reduce engine torque to help GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 295 If the vehicle is equipped with a Warning (Continued) Warning (Continued) trailer tire pressure monitoring system, see the trailer tire pressure result in a crash. You or others . If the trailer brakes are not monitoring system description and could be seriously injured or operating properly at any the trailering app. killed. Before using one of these time, or if a DIC message devices: indicates problems with the Trailer tires deteriorate over time. trailer connections or trailer The trailer tire sidewall will show the . Ask the device or trailer brakes, carefully pull the week and year the tire was manufacturer if the device vehicle over to the side of manufactured. Many trailer tire has been thoroughly tested the road when traffic manufacturers recommend for compatibility with the conditions allow. replacing tires more than six make, model, and year of years old. your vehicle and any optional equipment installed Trailer Tires Overloading is another leading on your vehicle. cause of trailer tire blow-outs. Never Special Trailer (ST) tires differ from load your trailer with more weight . Before driving, check the vehicle tires. Trailer tires are than the tires are designed to trailer brakes are working designed with stiff sidewalls to help support. The load rating is located properly, if equipped. Drive prevent sway and to support heavy on the trailer tire sidewall. the vehicle with the trailer loads. These features can make it attached on a level road difficult to determine if the trailer tire Always know the maximum speed surface that is free of traffic pressures are low only based on a rating for the trailer tires before at about 32-40 km/h visual inspection. driving. This may be significantly lower than the vehicle tire speed (20-25 mph) and fully apply Always check all trailer tire the manual trailer brake rating. The speed rating may be on pressures before each trip when the the trailer tire sidewall. If the speed apply lever. Also, check the tires are cool. Low trailer tire trailer brake lamps and rating is not shown, the default pressure is a leading cause of trailer trailer tire speed rating is 105 km/h other lamps are functioning tire blow-outs. correctly. (65 mph). (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

296 Driving and Operating Trailering App Touch Stop to stop the test. The test Home Page. Touch GET STARTED will automatically end after in the Trailering App to go into Trailer Light App one minute and 45 seconds. the app. If equipped, the Trailer Lights App is The sequence also deactivates When a trailer is electrically on the Home Page of the when any of the following occur: connected, there will be an option to infotainment display. . The ignition is turned off. create a profile, use a guest profile, Touch Start to cycle the trailer lights or cancel. After Cancel is selected a . The transmission is shifted out on and off to determine if they are third time, Don’t Remind Me will of P (Park). working. The test follows this display and touching that will turn off sequence: . The brake pedal pressed. the trailer detection pop-up. To turn the Trailer Detection Alert on, select 1. The running lights turn on first . The turn signal is activated. ON in the Settings tab. and remain on throughout the . The hazard warning lights sequence. When a trailer is electrically activated. connected and after a Trailer Profile 2. The brake lights turn on for Trailering App has been created, the trailer about two seconds. detection pop-up will appear with a If equipped, the Trailering App is on 3. The left turn signal light flashes list of all of the custom Trailer the Home Page of the infotainment three times. Profiles made on the vehicle. To display. load an existing Trailer Profile, 4. The right turn signal light This feature allows profiles for select one of the Trailer Profiles flashes three times. connected trailers to be created to listed, or load the Guest Trailer 5. The reverse lights turn on for view status, and to store and track Profile by selecting GUEST about two seconds. trailer usage information. TRAILER. Touching Cancel, Accessory/No trailer, or shifting the 6. Steps 2 5 repeat for – The Trailering App Preview will vehicle from P (Park), will select approximately one minute and appear when the Trailering App is Accessory/No trailer as the active 45 seconds, or until the test opened for the first time from the Trailer Profile and will dismiss the deactivates. pop- up. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 297 Create a Trailer Profile Trailer Tire Pressure Setup vehicle’s brake lamps will flash, and 1. Touch Create Profile on the If the Trailer Tire Pressure all working trailer lamps will flash. pop-up or touch + New Trailer Monitoring System (TTPMS) is It then moves to the next sensor. in the Trailering App. detected, touch Yes to set up the To cancel the process touch Stop. 2. Create a name for the trailer. sensors or touch No to skip this The recommended tire pressure step and go to the Maintenance must be entered for the trailer tires. 3. Select the hitch type. Reminders step. A checklist profile will be This allows the vehicle to alert when created based on the type If the vehicle is not equipped with the tire pressure is high or low. selected. TTPMS, the app will advance TTPMS must learn the location of directly to the Maintenance 4. Select the trailer type. the installed tire sensors to show Reminders screen. Follow the correct air pressure and A pop-up will indicate the setup is on-screen instructions. temperature for each tire. To set up, complete. Touch DONE to complete A trailer must be electrically use one of the following options or the process or touch ADVANCED connected to the vehicle before see a tire or trailer dealer for SETUP to set up the Tow/Haul starting the sensor-to-vehicle learn service. The learning process must Mode reminder, Trailer Tire process. be repeated when the trailer tires Pressure Monitoring System, After selecting Start from the Learn are rotated or replaced. See “Editing if equipped, or maintenance a Trailer Profile” later in this section reminders. Sensors screen, use the Tool Method or the Manual Method for tire pressure sensor relearn Advanced Setup (described below) to learn each tire information. sensor, during which the current tire Tool Method: A TTPMS activation Tow/Haul Mode Reminder number will be highlighted. tool can be purchased separately to To turn the Tow/Haul Mode Each sensor has a minimum of learn the sensor locations. Reminder setting on, touch Yes. To two minutes to learn, shown by a Manual Method: Without the tool, turn it off, touch No. timer. After a sensor is learned, a the air pressure can be increased or checkmark appears next to the tire, decreased in each tire for the vehicle horn will sound, the 10 seconds. Do not exceed the maximum inflation pressure found GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

298 Driving and Operating on the tire sidewalls. Make sure to 5. Return to the vehicle to Truck re-adjust tire pressure to the complete the setup. recommended level when the process is complete. Maintenance Reminders Select Yes to set up the Sensor Learning Steps maintenance reminders for the To complete the sensor-to-vehicle Trailer Profile. Follow the on-screen learn process: prompts. The maximum number of 1. Touch Start on the Learn reminders is 10. Select No to skip Sensors screen. The horn this step. chirps twice and the Learning Status View Active screen appears on the infotainment display. The Status view shows: 2. Start with the driver side front . Truck trailer tire. . Connection 1. Truck Status Page 2. Transmission Temperature 3. Activate the tool near the valve . Trailer stem or adjust the air pressure 3. Average Fuel Economy with of this tire until the horn chirps . Maintenance Trailer Profile and all working vehicle and Average Fuel Economy trailer lights flash. Touch to view the average fuel The process stops without economy of the vehicle while the saving the sensor locations if Trailer Profile is active. this step takes more than two minutes. 4. Move to the next tire and repeat Step 3 for each sensor. The horn chirps twice when all sensors are completed. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 299 Transmission Temperature Signal Light, Reverse Lights, and The Running Lights connection may Touch to view the temperature of Electric Brakes, if equipped), the not detect partial outages. Activate the transmission fluid graphic. view will display OK. the light test to check all trailer lamps. See “Light Test” following. The graphic will indicate a Connection Problem dangerous level if the temperature If the trailer is not equipped with If any of the trailer connections are is at 130 °C–150 °C (270 °F–300 °F). reverse lights or electric brakes and not detected, a message about the you are receiving failure messages Connections connection issue will appear on the in the DIC or on this view, turn off Driver Information Center (DIC). The the Reverse Lights Alert or the infotainment display will also show Electric Brakes Alert setting in the the connection issue in the trailer’s profile page. Connection Status view. Light Test Diagnose View Touch Start Light Test to cycle the Touch Diagnose to see more trailer lights on and off to determine information about the connection if they are working. The test follows problem. this sequence: This view will display the names of 1. The running lights turn on first the trailer connector pins, a graphic and remain on throughout the of the trailer connector, and a sequence. graphic of the back of the trailer. 2. The brake lights turn on for 1. Connections Status Page Any connector pin that failed will be about two seconds. 2. Light Test Start Button amber color, and the location of the 3. Trailer Electrical Diagnostics corresponding connection will be 3. The left turn signal light flashes highlighted on the graphic of the three times. Connections OK back of the trailer. 4. The right turn signal light If all of the trailer connections are flashes three times. detected (Daytime Running Lights, Left Turn Signal Light, Right Turn GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

300 Driving and Operating 5. The reverse lights turn on for Trailer trailer tires related to the active about two seconds. Trailer Profile. If a tire’s pressure is low or high, the color of the 6. Steps 2–5 repeat for approximately one minute and pressure value will be amber. If a 45 seconds, or until the test sensor malfunctions, the values are deactivates. dashed lines. If the screen displays “Service Tire Pressure Monitoring Touch Stop to stop the test. The test System”, the vehicle needs to be will automatically end after taken to a dealer for service. one minute and 45 seconds. Maintenance The sequence also deactivates when any of the following occur: . The ignition is turned off. . The transmission is shifted out of P (Park). 1. Trailer Status Page 2. Trailer Tire Pressure/ . The brake pedal is pressed. Temperature . The turn signal is activated. 3. Mileage of Trailer . The hazard warning lights are Mileage activated. The mileage accumulated while this Trailer Profile is active will display. Touch mileage to edit. Tire Pressure and Temperature 1. Maintenance Status Page 2. List of Maintenance If the TTPMS sensor-to-vehicle Reminders learn process was completed, the status view will display the current 3. Add a New Maintenance tire pressure and temperature of the Reminder GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 301 The Maintenance Status view Guest Trailer Status View Custom Checklist Items displays reminders. Touch a Touch the Guest Trailer Profile for For each of the Trailer Profile reminder to edit. the status views. checklists, there is an option to Touch + New Maintenance The Trailer Status view displays create custom items to view in the Reminder to go to the Select New mileage information. Touch to edit, checklist. The custom item will Reminder view. and follow the on-screen prompts. appear at the bottom of the The progress bar turns yellow when Mileage and fuel economy will reset checklist. the maintenance item reaches 90% after the trailer disconnects. Guest Trailer and No Trailer complete. Checklist View Connected The progress bar turns red when If Guest Trailer Profile is active or if the maintenance item reaches This view shows the recommended steps to take before towing a trailer. no trailer is connected, the checklist 100% complete. will show all of the checklists Maintenance Notifications Touch the box next to each item if associated with Custom Trailer that step has been completed. Profiles in addition to default Touch Service Complete to reset . checklists. the maintenance reminder. Touch p to access a detailed view of each step. Within each . Touch Remind Me Later to delay Trailers View detailed view, touch Next and the reminder. Previous to navigate between steps. Touch the Trailers tab to view, . Touch X next to Upcoming Alerts activate, create, edit, or delete The checklist is unique to the Trailer (90%) to dismiss the alert. It will Trailer Profiles. Profile based on hitch type; for not appear again. example, the steps involve different If a trailer is connected, touch the . Touch X next to Maintenance details between conventional, Trailer Profile name to activate a Due (100%) to delay the alert to gooseneck, and fifth-wheel hitch Trailer Profile. the next ignition cycle. types. There can be up to five Custom Always follow all of the maintenance Trailer Profiles on the vehicle. instructions that came with your trailer. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

302 Driving and Operating The Custom Trailer Profiles and No Trailer Connected Trailer brake gain should be set for Guest Trailer are in order of the When there is no trailer connected, a specific trailering condition and most frequently used. Trailer Profiles cannot be activated must be adjusted anytime vehicle All personalization features are but most options can be edited. loading, trailer loading, or road based on the settings for each surface conditions change. Trailer Brake Gain Memory driver in vehicle personalization. See “Brake Gain” for information The list of Trailer Profiles is based The system can memorize the brake about the gain setting procedure. on vehicle personalization settings. gain setting of a Trailer Profile or a Guest Trailer Profile. When a Trailer Editing a Trailer Profile Guest Trailer Profile or Guest Trailer Profile is Trailer Profile View If the Guest Trailer Profile is the selected, and a brake gain setting is active Trailer Profile, trailer set for that Trailer Profile, a quick Touch to edit any of the following detection, connections status, notice will appear to indicate that options in the Trailer Profile view: security, and the Tow/Haul reminder the system has recalled that . Trailer Name alerts can be sent. The system will profile s brake gain setting. ’ . Hitch Type not track total mileage or fuel If a Trailer Profile is already active . Trailer Type economy, but the system will track and the brake gain setting had been trip mileage and fuel economy if the set for that Trailer Profile, the quick . Tire Pressure Setup Guest Trailer Profile is active. The notice will trigger whenever the . Maintenance Reminders Trailer Tire Pressure Monitoring ignition is turned on. System or maintenance reminders . Mileage cannot be set up for a Guest Trailer If there was an error in setting the Profile. The Guest Trailer Profile brake gain for a Trailer Profile, there . Average Fuel Economy cannot be edited. will be a notification. This pop-up . Reverse Lights Alert will not appear if the Guest Trailer Touch p to learn more about the Profile is active or if there is no . Electric Brakes Alert Guest Trailer option. trailer connected. Touch Save to save the new value to the Trailer Profile. Touching Back will still save the previously entered information. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 303 Trailer Name Tire Pressure Setup If number of sensors has not changed, touch Next and the Learn Touch to edit the Trailer Profile’s Touch to set up the Trailer Tire name. Use at least one character Pressure Monitoring System sensors screen will appear. and no spaces. Touch Save. (TTPMS) for the Trailer Profile. See On the Learn Sensors screen. “Trailer Tire Pressure Setup” under Touch Relearn to overwrite the Hitch Type “Advanced Setup” for details on the current sensors and begin the Touch to edit the Trailer Profile’s setup. Also, touch Tire Pressure relearning process. See “Trailer Tire hitch type. The previously selected Setup if the trailer tires were rotated Pressure Setup” previously in this hitch type will be highlighted. or if the tire pressure sensors in the section. Touch a different hitch type and then tires were replaced for this Trailer On the Learn Sensors screen, touch touch Save to save it to the Trailer Profile. The vehicle will need to Next to go to the Edit Profile. If a different hitch type is relearn the tire sensors and their Recommended Tire Pressure selected, any custom items added locations. screen. to the previous checklist will be If TTPMS had been set up On the Edit Recommended Tire carried over to the new selection. previously, the Select Number of Pressure screen, touch a number on If a different hitch type is saved, a Sensors screen will appear after the keypad to change the touching Tire Pressure Setup. If the new trailer type will need to be Recommended Tire Pressure for the selected. number of sensors has changed, select the number and touch Next. trailer’s tires. This will change the number at which the vehicle Trailer Type If a new number of sensors is Touch to edit the Trailer Profile’s selected, the Relearn Sensors displays alerts related to trailer tire Trailer Type. The previously pop-up will appear. Touch Cancel to pressure. Touch Done to return to selected trailer type will be go back or touch Relearn to the Trailer Profile view. highlighted. Touch a different trailer overwrite the current sensors and Maintenance Reminders type and then touch Save to save it begin the relearning process. See to the Trailer Profile. “Trailer Tire Pressure Setup” Touch to view a list of maintenance previously in this section. reminders for the Trailer Profile. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

304 Driving and Operating Touch a reminder to view, reset, previously set will have checkmarks later detected. This setting cannot delete, or edit it. next to them. Suggested reminders be edited when the Trailer Profile is that have not been set will have inactive or when the trailer is Reset Reminder empty boxes next to them. The disconnected. Touch Maintenance Complete in the maximum number of reminders reminder view to reset the reminder. is 10. Electric Brakes Alert On the pop-up, touch Reset to reset Turn on to receive failure messages the time and mileage values for the Mileage about the electric trailer brakes. reminder. Touch Cancel to return to Touch to edit the Trailer Profile’s Turn off to not receive failure the previous view and nothing will mileage. messages about the electric trailer change. brakes, unless they are later Effect on Maintenance Reminders detected. This setting cannot be Edit Reminder If the mileage is reset or changed, edited when the Trailer Profile is Touch to edit the mileage or time and mileage has already inactive or when the trailer is settings for the reminder. Touch accumulated, any maintenance disconnected. Save to save the new settings to the reminders that have been set up will Trailer Profile. be adjusted accordingly. Delete Trailer Touch to delete the Trailer Profile Delete Reminder Average Fuel Economy and all of its settings. Touch to delete the maintenance Touch to reset the average fuel On the pop-up, touch Delete to reminder. On the pop-up, touch economy for the Trailer Profile. delete the Trailer Profile. Touch Delete to delete the reminder or Touch Reset to change, or touch Cancel to dismiss the pop-up and touch Cancel to return to the Cancel to go back to the return to the previous view. previous view and nothing will previous view. change. Settings View Reverse Lights Alert Within the Trailering App, touch the New Maintenance Reminder Turn on to receive failure messages Settings tab to modify the following Touch + New Maintenance about the reverse lights. Turn off to settings: Reminder to set up a new reminder. not receive failure messages about Suggested reminders that were the reverse lights, unless they are . Trailer Detection Alert GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 305 . Maintenance Alerts The setting will be on by default for disconnected from the vehicle, if the . Security Alert each profile. All Maintenance Alerts setting is on for the active Trailer for that active Trailer Profile will be Profile, the vehicle has an OnStar or . Tow/Haul Mode Reminder received. connected service plan and the Trailer Detection Alert Turn a setting off to not receive any smartphone number has been of the Maintenance Alerts when that added to the account for this The Trailer Detection Alert setting Trailer Profile is active. notification. will be on by default. Turn it off to If the setting is turned off for a given disable the Trailer Detection pop-up Security Alert Trailer Profile, the smartphone will from displaying when a trailer is not receive this security notification connected. The Guest Trailer Profile A security alert can be set if a trailer even if the Trailer Profile is active. will become the active Trailer is connected and the alert is enabled. When the trailer is Profile, unless another Trailer Profile Tow/Haul Mode Reminder is selected manually through the disconnected and the vehicle is off, Trailering App. If this setting is an alarm will sound. This is a reminder to turn on the Tow/Haul Mode when towing a disabled while a Custom Trailer Touch Security Alert in Settings to 0 Profile is active, that Trailer Profile view the Security Alert settings trailer. See Tow/Haul Mode 234. will remain the active profile until the page. These alerts are based on the Touch Tow/Haul Mode Reminder in trailer is disconnected. Trailer Profile, so the settings for Settings to view the Tow/Haul Mode each Trailer Profile must be turned Reminder settings page. These Maintenance Alerts on or off. Touch a profile to view alerts are based on the Trailer Touch Maintenance Alerts to view more information or adjust the Profile, so the settings for each the Maintenance Alerts settings setting for that profile. Trailer Profile must be turned on or page. These alerts are based on the This setting will be off by default for off. Touch a profile to view more Trailer Profile, so the settings for each Trailer Profile, including the information or to adjust the setting each Trailer Profile must be turned Guest Trailer Profile. for that profile. on or off. Touch a profile to view A smartphone will receive a This setting will default to OFF for more information or adjust the each Trailer Profile, including the setting for that profile. notification that the trailer related to the selected Trailer Profile is Guest Trailer Profile. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/16/18

306 Driving and Operating If Tow/Haul Mode is off and this Conversions and setting is on for a Trailer Profile, Caution each time the ignition is turned on a Add-Ons reminder will appear to turn on Tow/ Some electrical equipment can Haul Mode when the Trailer Profile Add-On Electrical damage the vehicle or cause is active. components to not work and Equipment would not be covered by the If Tow/Haul Mode is on and this vehicle warranty. Always check setting is on for a Trailer Profile, the { Warning with your dealer before adding reminder will not appear when the electrical equipment. Trailer Profile is active. The Data Link Connector (DLC) is used for vehicle service and Emission Inspection/ Add-on equipment can drain the Maintenance testing. See vehicle's 12-volt battery, even if the vehicle is not operating. Malfunction Indicator Lamp (Check Engine Light) 0 149. The vehicle has an airbag system. A device connected to the DLC — Before attempting to add anything 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 96 and Adding Equipment systems. This could affect vehicle to the Airbag-Equipped Vehicle 0 operation and cause a crash. 97. 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-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 307 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-1500-11698638) - 2019 - crc - 5/16/18

308 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-1500-11698638) - 2019 - crc - 5/16/18

Driving and Operating 309 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-1500-11698638) - 2019 - crc - 5/16/18

310 Driving and Operating go to a weigh station and weigh the vehicle. Your dealer can also help with this. The total vehicle reserve capacity for the vehicle is in the lower right corner of the Certification/Tire label as shown previously. See your dealer for additional advice and information about using a snow plow on the vehicle. Also, see Vehicle Load Limits 0 209. Pickup Conversion to Chassis Cab We are aware that some vehicle owners might consider having the pickup box removed and a commercial or recreational body installed. Owners should be aware that, as manufactured, there are differences between a chassis cab and a pickup with the box removed which could affect vehicle safety. The components necessary to adapt a pickup to permit its safe use with a specialized body should be installed by the body builder. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 311 Washer Fluid ...... 334 Center High-Mounted Vehicle Care Brakes ...... 335 Stoplamp (CHMSL) and Brake Pad Life System ...... 335 Cargo Lamp ...... 348 Brake Fluid ...... 336 License Plate Lamp ...... 349 General Information Battery - North America ...... 337 General Information ...... 312 Four-Wheel Drive ...... 340 Electrical System California Proposition Front Axle ...... 340 Electrical System Overload . . . 349 65 Warning ...... 313 Rear Axle ...... 341 Fuses and Circuit Breakers . . . 350 California Perchlorate Noise Control System ...... 342 Engine Compartment Fuse Materials Requirements . . . . . 313 Starter Switch Check ...... 343 Block ...... 350 Accessories and Ignition Transmission Lock Instrument Panel Fuse Block Modifications ...... 313 Check ...... 343 (Right) ...... 354 Park Brake and P (Park) Instrument Panel Fuse Vehicle Checks Block (Left) ...... 356 Doing Your Own Mechanism Check ...... 343 Service Work ...... 314 Wiper Blade Replacement . . . . 344 Wheels and Tires Hood ...... 314 Windshield Replacement . . . . . 345 Tires ...... 358 Engine Compartment Gas Strut(s) ...... 345 All-Season Tires ...... 359 Overview ...... 316 Headlamp Aiming Winter Tires ...... 359 Engine Oil ...... 321 Headlamp Aiming ...... 346 Low-Profile Tires ...... 360 Engine Oil Life System ...... 323 All-Terrain Tires ...... 360 Automatic Transmission Bulb Replacement Tire Sidewall Labeling ...... 360 Fluid ...... 325 Bulb Replacement ...... 346 Tire Designations ...... 363 Engine Air Filter Life Halogen Bulbs ...... 346 Tire Terminology and System ...... 325 LED Lighting ...... 347 Definitions ...... 364 Engine Air Cleaner/Filter ...... 326 Headlamps, Front Turn Signal, Tire Pressure ...... 367 Cooling System ...... 327 Sidemarker, and Parking Tire Pressure for High-Speed Engine Overheating ...... 331 Lamps ...... 347 Operation ...... 368 Overheated Engine Protection Taillamps, Turn Signal, Tire Pressure Monitor Operating Mode ...... 333 Stoplamps, and Back-Up System ...... 369 Engine Fan ...... 333 Lamps ...... 347 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

312 Vehicle Care Tire Pressure Monitor Floor Mats ...... 411 General Information Operation ...... 370 Tire Inspection ...... 375 For service and parts needs, visit Tire Rotation ...... 376 your dealer. You will receive When It Is Time for New genuine GM parts and GM-trained Tires ...... 377 and supported service people. Buying New Tires ...... 378 Genuine GM parts have one of Different Size Tires and these marks: Wheels ...... 379 Uniform Tire Quality Grading ...... 380 Wheel Alignment and Tire Balance ...... 381 Wheel Replacement ...... 381 Tire Chains ...... 382 If a Tire Goes Flat ...... 383 Tire Changing ...... 385 Full-Size Spare Tire ...... 394 Jump Starting Jump Starting - North America ...... 395 Towing the Vehicle Towing the Vehicle ...... 398 Recreational Vehicle Towing ...... 399 Appearance Care Exterior Care ...... 403 Interior Care ...... 408 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 313 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 97. See Battery - North America 0 337 handling, emissions systems, and Jump Starting - North America aerodynamics, durability, and 0 395 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-1500-11698638) - 2019 - crc - 5/15/18

314 Vehicle Care Vehicle Checks If equipped with remote vehicle start, open the hood before { Warning performing any service work to Doing Your Own prevent remote starting the vehicle Components under the hood can Service Work accidentally. See Remote Vehicle get hot from running the engine. Start 0 43. To help avoid the risk of burning unprotected skin, never touch { Warning Keep a record with all parts receipts these components until they have and list the mileage and the date of cooled, and always use a glove or It can be dangerous to work on any service work performed. See towel to avoid direct skin contact. your vehicle if you do not have Maintenance Records 0 428. the proper knowledge, service manual, tools, or parts. Always Caution Clear any snow from the hood follow owner’s manual procedures before opening. and consult the service manual Even small amounts of To open the hood: for your vehicle before doing any contamination can cause damage service work. to vehicle systems. Do not allow 1. Pull the hood release lever with contaminants to contact the fluids, the i symbol. It is on the If doing some of your own service reservoir caps, or dipsticks. lower left side of the instrument work, use the proper service panel. manual. It tells you much more Hood 2. Go to the front of the vehicle about how to service the vehicle and locate the secondary than this manual can. To order the release lever under the front proper service manual, see { Warning center of the hood. Push the Publication Ordering Information secondary hood release lever Turn the vehicle off before 0 442. to the right to release. opening the hood. If the vehicle is This vehicle has an airbag system. on, the engine will start when the Before attempting to do your own hood is opened. You or others service work, see Servicing the could be injured. Airbag-Equipped Vehicle 0 96. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 315 3. After you have partially lifted the hood, the gas strut system Warning (Continued) will automatically lift the hood and hold it in the fully open You or others could be injured. position. Always close the hood completely before driving. To close the hood: 1. Before closing the hood, be The Driver Information Center (DIC) sure all filler caps are on will display a message if the hood is properly, and all tools are not fully closed, and the vehicle is removed. moving. Stop and turn off the 2. Pull the hood down until the vehicle, check the hood for strut system is no longer obstructions, and close the hood holding up the hood. again. Check to see if the message still appears on the DIC. 3. Allow the hood to fall. Check to make sure the hood is latched completely. Repeat this process with additional force if necessary.

{ Warning

Do not drive the vehicle if the hood is not latched completely. The hood could open fully, block your vision, and cause a crash. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

316 Vehicle Care Engine Compartment Overview

2.7L L4 Engine (L3B) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 317 1. Remote Negative (–) Location. 11. Windshield Washer Fluid See Jump Starting - North Reservoir. See “Adding Washer America 0 395. Fluid” under Washer Fluid 0 2. Positive (+) Terminal (Under 334. Cover). See Jump Starting - North America 0 395. 3. Battery - North America 0 337. 4. Engine Compartment Fuse Block 0 350. 5. Engine Cooling Fans (Out of View). See Cooling System 0 327. 6. Engine Oil Fill Cap. See “When to Add Engine Oil” under Engine Oil 0 321. 7. Engine Oil Dipstick. See “Checking Engine Oil” under Engine Oil 0 321. 8. Coolant Surge Tank and Pressure Cap. See Cooling System 0 327. 9. Engine Air Cleaner/Filter 0 326. 10. Brake Fluid Reservoir. See Brake Fluid 0 336. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

318 Vehicle Care

4.3L V6 Engine (LV3) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 319 1. Remote Negative (–) Location. 11. Windshield Washer Fluid See Jump Starting - North Reservoir. See “Adding Washer America 0 395. Fluid” under Washer Fluid 0 2. Positive (+) Terminal (Under 334. Cover). See Jump Starting - North America 0 395. 3. Battery - North America 0 337. 4. Engine Compartment Fuse Block 0 350. 5. Engine Cooling Fans (Out of View). See Cooling System 0 327. 6. Engine Oil Dipstick. See “Checking Engine Oil” under Engine Oil 0 321. 7. Engine Oil Fill Cap. See “When to Add Engine Oil” under Engine Oil 0 321. 8. Coolant Surge Tank and Pressure Cap. See Cooling System 0 327. 9. Engine Air Cleaner/Filter 0 326. 10. Brake Fluid Reservoir. See Brake Fluid 0 336. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

320 Vehicle Care

5.3L V8 Engine (L84) Shown, 5.3L V8 Engine (L82) and 6.2L V8 Engine (L87) Similar GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 321 1. Remote Negative (–) Location. 11. Windshield Washer Fluid . Change the engine oil at the See Jump Starting - North Reservoir. See “Adding Washer appropriate time. See Engine Oil America 0 395. Fluid” under Washer Fluid Life System 0 323. 0 2. Positive (+) Terminal (Under 334. . Always dispose of engine oil Cover). See Jump Starting - If the vehicle has a diesel engine, properly. See “What to Do with North America 0 395. see the Duramax diesel Used Oil” in this section. supplement. 3. Battery - North America 0 337. Checking Engine Oil 4. Engine Compartment Fuse Engine Oil Check the engine oil level regularly, Block 0 350. every 650 km (400 mi), especially For diesel engine vehicles, see 5. Engine Oil Dipstick. See prior to a long trip. The engine oil “Engine Oil” in the Duramax diesel dipstick handle is a loop. See “Checking Engine Oil” under supplement. Engine Oil 0 321. Engine Compartment Overview To ensure proper engine 0 316 for the location. 6. Engine Cooling Fans (Out of performance and long life, careful View). See Cooling System 0 attention must be paid to engine oil. { Warning 327. Following these simple, but 7. Engine Oil Fill Cap. See “When important steps will help protect The engine oil dipstick handle to Add Engine Oil” under your investment: may be hot; it could burn you. 0 Engine Oil 321. . Use engine oil approved to the Use a towel or glove to touch the 8. Coolant Surge Tank and proper specification and of the dipstick handle. Pressure Cap. See Cooling proper viscosity grade. See 0 System 327. “Selecting the Right Engine Oil” If a low oil Driver Information Center in this section. 9. Engine Air Cleaner/Filter 0 326. (DIC) message displays, check the . Check the engine oil level oil level. 10. Brake Fluid Reservoir. See regularly and maintain the Brake Fluid 0 336. proper oil level. See “Checking Engine Oil” and “When to Add Engine Oil” in this section. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

322 Vehicle Care Follow these guidelines: When to Add Engine Oil Caution (Continued) . To get an accurate reading, park the vehicle on level ground. above the operating range (i.e., Check the engine oil level after the engine has so much oil that the engine has been off for at the oil level gets above the least two hours. Checking the cross-hatched area that shows engine oil level on steep grades the proper operating range), the or too soon after engine shutoff engine could be damaged. Drain can result in incorrect readings. If the oil is below the cross-hatched the excess oil or limit driving of Accuracy improves when area at the tip of the dipstick and the vehicle, and seek a service checking a cold engine prior to the engine has been off for at least starting. Remove the dipstick professional to remove the 15 minutes, add 1 L (1 qt) of the excess oil. and check the level. recommended oil and then recheck . If unable to wait two hours, the the level. See “Selecting the Right engine must be off for at least Engine Oil” later in this section for See Engine Compartment Overview 0 15 minutes if the engine is an explanation of what kind of oil to 316 for the location of the engine warm, or at least 30 minutes if use. For engine oil crankcase oil fill cap. the engine is not warm. Pull out capacity, see Capacities and Add enough oil to put the level the dipstick, wipe it with a clean Specifications 0 430. somewhere in the proper operating paper towel or cloth, then push it range. Push the dipstick all the way back in all the way. Remove it Caution back in when through. again, keeping the tip down, and check the level. Do not add too much oil. Oil Selecting the Right Engine Oil levels above or below the Selecting the right engine oil acceptable operating range depends on both the proper oil shown on the dipstick are harmful specification and viscosity grade. to the engine. If the oil level is See Recommended Fluids and 0 (Continued) Lubricants 425. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 323 Specification Use SAE 5W-30 viscosity grade What to Do with Used Oil engine oil for the 2.7L L4 and 4.3L Use full synthetic engine oils that Used engine oil contains certain V6 engines. Cold Temperature meet the dexos1 specification. elements that can be unhealthy for Operation: In an area of extreme Engine oils that have been your skin and could even cause cold, where the temperature falls approved by GM as meeting the cancer. Do not let used oil stay on below −29 °C (−20 °F), use SAE dexos1 specification are marked your skin for very long. Clean your 0W-30 oil in the 2.7L or 4.3L engine. with the dexos1 approved logo. skin and nails with soap and water, An oil of this viscosity grade will or a good hand cleaner. Wash or provide easier cold starting for the properly dispose of clothing or rags engine at extremely low containing used engine oil. See the temperatures. manufacturer's warnings about the When selecting an oil of the use and disposal of oil products. appropriate viscosity grade, it is Used oil can be a threat to the recommended to select an oil of the environment. If you change your correct specification. See own oil, be sure to drain all the oil Specification earlier in this section. Caution “ ” from the filter before disposal. Never dispose of oil by putting it in the Failure to use the recommended Engine Oil Additives/Engine Oil Flushes trash or pouring it on the ground, engine oil or equivalent can result into sewers, or into streams or in engine damage not covered by Do not add anything to the oil. The bodies of water. Recycle it by taking the vehicle warranty. recommended oils meeting the it to a place that collects used oil. dexos1 specification are all that is needed for good performance and Viscosity Grade Engine Oil Life System engine protection. Use SAE 0W-20 viscosity grade Engine oil system flushes are not When to Change Engine Oil engine oil for the 5.3L and 6.2L recommended and could cause V8 engines. This vehicle has a computer system engine damage not covered by the that indicates when to change the vehicle warranty. engine oil and filter. This is based on a combination of factors which GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

324 Vehicle Care include engine revolutions, engine the oil regularly over the course of vehicle does not have DIC temperature, and miles driven. an oil drain interval and keep it at controls, for several seconds. Based on driving conditions, the the proper level. When the confirmation mileage at which an oil change is If the system is ever reset message displays, select YES. indicated can vary considerably. For accidentally, the oil must be The oil life will change the oil life system to work properly, changed at 5 000 km (3,000 mi) to 100%. the system must be reset every time since the last oil change. The oil life system can also be reset the oil is changed. Remember to reset the oil life as follows: On some vehicles, when the system system whenever the oil is changed. 1. Display the oil life percentage has calculated that oil life has been on the DIC. diminished, a CHANGE ENGINE How to Reset the Engine Oil Life System See Driver Information Center OIL SOON message comes on to (DIC) (Midlevel and Uplevel) indicate that an oil change is Reset the system whenever the 0 160 or Driver Information necessary. Change the oil as soon engine oil is changed so that the Center (DIC) (Base Level) as possible within the next 1 000 km system can calculate the next 0 159. (600 mi). It is possible that, if driving engine oil change. Always reset the under the best conditions, the oil life engine oil life to 100% after every oil 2. Fully press the accelerator system might indicate that an oil change. It will not reset itself. To pedal slowly three times within change is not necessary for up to a reset the engine oil life system: five seconds. year. The engine oil and filter must 1. Display the oil life percentage 3. If the display changes to 100%, be changed at least once a year the system is reset. and, at this time, the system must on the DIC. be reset. For vehicles without the See Driver Information Center If the vehicle has a CHANGE (DIC) (Midlevel and Uplevel) ENGINE OIL SOON message and it CHANGE ENGINE OIL SOON 0 message, an oil change is needed 160 or Driver Information comes back on when the vehicle is Center (DIC) (Base Level) started and/or the oil life percentage when the REMAINING OIL LIFE 0 percentage is near 0%. Your dealer 159. is near 0%, the engine oil life has trained service people who will 2. Press the thumbwheel on the system has not been reset. Repeat perform this work and reset the steering wheel, or the trip the procedure. system. It is also important to check odometer reset stem if the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 325 Automatic Transmission replaced as soon as possible. Reset Caution (Continued) the engine air filter life system after Fluid the engine air filter is replaced. See not be covered by the vehicle When to Check and Change your dealer for service and to reset warranty. Always use the correct the system. Automatic Transmission Fluid automatic transmission fluid. See It is usually not necessary to check Recommended Fluids and If equipped, this feature provides an the transmission fluid level. The only Lubricants 0 425. indication of when to change the reason for fluid loss is a engine air filter. It is based on transmission leak or overheated driving conditions, which can cause Change the fluid and filter at the transmission. This vehicle is not when to change to vary greatly. It is scheduled maintenance intervals equipped with a transmission fluid possible an air filter change may not listed in Maintenance Schedule level dipstick. There is a special be indicated for up to four years. 0 415. Be sure to use the procedure for checking and transmission fluid listed in How to Reset the Engine Air changing the transmission fluid in Recommended Fluids and Filter Life System these vehicles. Because this Lubricants 0 425. procedure is difficult, this should be To reset: done at the dealer. Contact the 1. Place the vehicle in P (Park). dealer for additional information or Engine Air Filter Life the procedure can be found in the System 2. Display the Air Filter Life on the service manual. See Publication DIC. Ordering Information 0 442. When to Change the Engine See Driver Information Center Air Filter (DIC) (Midlevel and Uplevel) 0 160 or Driver Information Caution When the “Replace at Next Oil Center (DIC) (Base Level) Change” message displays, the 0 159. Use of the incorrect automatic engine air filter should be replaced transmission fluid may damage at the time of the next engine oil 3. Press T to move to the Reset/ the vehicle, and the damage may change. When the “Replace Engine Disable display area. Select (Continued) Air Filter Now” message displays, Reset then press V. the engine air filter should be GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

326 Vehicle Care 4. Press to confirm to reset. If driving in very dusty areas, follow To inspect or replace the engine air 5. If the vehicle is not equipped the engine air filter inspecting and cleaner/filter: changing intervals. See with DIC buttons, depress the 0 thumbwheel or trip odometer Maintenance Schedule 415. reset stem for several seconds How to Inspect the Engine Air to reset the air filter life system. Cleaner/Filter Engine Air Cleaner/Filter Do not start the engine or have the engine running with the engine air If the vehicle has a diesel engine, cleaner/filter housing open. Before see “Engine Air Cleaner/Filter” in removing the engine air cleaner/ the Duramax diesel supplement for filter, make sure that the engine air the correct inspection and cleaner/filter housing and nearby replacement procedures. components are free of dirt and debris. Remove the engine air The engine air cleaner/filter is on 5.3L V8 Engine (L84) Shown, 2.7L the driver side of the engine cleaner/filter. Lightly tap and shake the engine air cleaner/filter (away L4 Engine (L3B), 4.3L V6 Engine compartment. See Engine (LV3), 5.3L V8 Engine (L82), and Compartment Overview 0 316. from the vehicle), to release loose dust and dirt. Inspect the engine air 6.2L V8 Engine (L87) Similar When to Inspect the Engine Air cleaner/filter for damage, and Cleaner/Filter replace if damaged. Do not clean 1. Air Duct Clamp the engine air cleaner/filter or 2. Electrical Harness For intervals on changing and components with water or Connector inspecting the engine air filter, see compressed air. 3. Screws Maintenance Schedule 0 415. 1. Locate the air cleaner/filter If equipped with the engine air filter assembly. See Engine life system, see Engine Air Filter Compartment Overview 0 316. Life System 0 325. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 327 2. Disconnect the outlet duct by loosening the air duct { Warning clamp (1). Operating the engine with the air 3. Disconnect the electrical cleaner/filter off can cause you or harness connector (2) from the others to be burned. Use caution cover. when working on the engine. Do 4. Remove the three screws on not start the engine or drive the top of the cover of the housing, vehicle with the air cleaner/filter then slide and lift the cover. off, as flames may be present if 5. Remove the engine air cleaner/ the engine backfires. filter from the housing. Take care to dislodge as little dirt as 2.7L L4 Engine (L3B) possible. Caution 6. Clean the engine air cleaner/ filter sealing surfaces and the If the air cleaner/filter is off, dirt housing. can easily get into the engine, which could damage it. Always 7. Inspect or replace the engine air cleaner/filter. have the air cleaner/filter in place when driving. 8. Reverse Steps 2 through 4 to reinstall the filter cover housing. Cooling System If the vehicle has the Duramax diesel engine, see the Duramax diesel supplement. 4.3L V6 Engine (LV3) The cooling system allows the engine to maintain the correct working temperature. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

328 Vehicle Care What to Use { Warning

Do not touch heater, radiator, a/c { Warning pipes or hoses, or other engine Plain water, or other liquids such parts. They can be very hot and as alcohol, can boil before the can burn you. Do not run the proper coolant mixture will. With engine if there is a leak; all plain water or the wrong mixture, coolant could leak out. That could the engine could get too hot but cause an engine fire and can there would not be an overheat burn you. Fix any leak before warning. The engine could catch driving the vehicle. fire and you or others could be 5.3L V8 Engine (L84) Shown, 5.3L burned. V8 Engine (L82) and 6.2L Engine Coolant V8 Engine (L87) Similar The cooling system in the vehicle is Use a 50/50 mixture of clean, 1. Engine Electric Cooling filled with DEX-COOL engine drinkable water and DEX-COOL Fans (Out of View) coolant. This coolant is designed to coolant. This mixture: remain in the vehicle for 5 years or 2. Coolant Surge Tank and . Gives freezing protection down 240 000 km (150,000 mi), whichever Pressure Cap to −37 °C (−34 °F), outside occurs first. temperature. The following explains the cooling { Warning . Gives boiling protection up to system and how to check and add 129 °C (265 °F), engine coolant when it is low. If there is a An underhood electric fan can temperature. start up even when the engine is problem with engine overheating, not running and can cause injury. see Engine Overheating 0 331. . Protects against rust and Keep hands, clothing, and tools corrosion. away from any underhood . Will not damage aluminum parts. electric fan. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 329 . Helps keep the proper engine Checking Coolant the indicated mark. If it is not, there temperature. may be a leak in the cooling The coolant surge tank is in the system. engine compartment on the driver Caution side of the vehicle. See Engine If coolant is visible but the coolant Compartment Overview 0 316. level is not at or above the indicated Do not use anything other than a mark, see the following sections on The vehicle must be on a level mix of DEX-COOL coolant that how to add coolant to the coolant surface when checking the coolant meets GM Standard surge tank following. GMW3420 and clean, drinkable level. water. Anything else can cause Automatic Coolant Service Fill damage to the engine cooling Instructions (L3B Engine) system and the vehicle, which See 3.0L Duramax Diesel would not be covered by the supplement for the diesel engine vehicle warranty. procedure. If equipped, this feature assists in Never dispose of engine coolant by filling and removing air from the putting it in the trash, or by pouring cooling system after service of it on the ground, or into sewers, components or when coolant is streams, or bodies of water. Have added after being too low. the coolant changed by an To activate the fill and air removal authorized service center, familiar process: with legal requirements regarding used coolant disposal. This will help Check to see if coolant is visible in 1. With a cold system, add protect the environment and your the coolant surge tank. If the coolant coolant to the COLD FILL mark health. inside the coolant surge tank is on the surge tank. boiling, wait until it cools down. The coolant level should be at or above 2. Replace the cap on the surge tank. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

330 Vehicle Care 3. Connect the vehicle to a empties, turn the ignition off, battery charger. carefully remove the surge tank cap, { Warning 4. Turn the ignition on for Key refill to the COLD FILL mark, and repeat Steps 3-6. The fill and air Plain water, or other liquids such Access vehicles or to Service as alcohol, can boil before the Only for Keyless Access removal process will run for approximately 10 minutes. proper coolant mixture will. With vehicles. plain water or the wrong mixture, See Ignition Positions (Key How to Add Coolant to the 0 the engine could get too hot but Access) 217 or Ignition Coolant Surge Tank for there would not be an overheat Positions (Keyless Access) Gasoline Engines Except L3B warning. The engine could catch 0 219. If the vehicle has a diesel engine, fire and you or others could be 5. Turn off the air conditioning. see “Cooling System” in the burned. 6. Set the parking brake. Duramax diesel supplement for the 7. At the same time, press the proper coolant fill procedure. accelerator and the brake for { Warning automatic transmission { Warning vehicles for two seconds, then Steam and scalding liquids from a release. Spilling coolant on hot engine hot cooling system are under parts can burn you. Coolant At the end of the cycle, check the pressure. Turning the pressure contains ethylene glycol and it will cap, even a little, can cause them coolant level in the surge tank and burn if the engine parts are hot add coolant if it is low. Turn off the to come out at high speed and enough. vehicle, allow the Electronic Control you could be burned. Never turn Module (ECM) to go to sleep, about the cap when the cooling system, 2 minutes, and repeat Steps 3-7. including the pressure cap, is hot. Wait for the cooling system and Listen for pump activation and pressure cap to cool. movement of the control valves while watching the level of the coolant in the surge tank. If the tank GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 331 Turn the pressure cap slowly 6. Verify coolant level after the Caution counterclockwise about one full engine is shut off and the turn. If a hiss is heard, wait for coolant is cold. If necessary, Failure to follow the specific that to stop. A hiss means repeat coolant fill procedure coolant fill procedure could cause there is still some pressure left. Steps 1–6. the engine to overheat and could 2. Keep turning the pressure cap cause system damage. If coolant Caution is not visible in the surge tank, slowly, and remove it. contact your dealer. 3. Fill the coolant surge tank with If the pressure cap is not tightly the proper mixture to the full installed, coolant loss and engine cold mark. If no coolant is visible in the surge damage may occur. Be sure the tank, add coolant. 4. With the coolant surge tank cap is properly and tightly pressure cap off, start the secured. engine and let it run until the engine coolant temperature gauge indicates approximately Engine Overheating 90 °C (195 °F). If the vehicle has the Duramax By this time, the coolant level diesel engine, see the Duramax inside the coolant surge tank diesel supplement. 1. Remove the coolant surge tank may be lower. If the level is pressure cap when the cooling lower, add more of the proper Caution system, including the coolant mixture to the coolant surge surge tank pressure cap and tank until the level reaches the Do not run the engine if there is a upper radiator hose, is no indicated mark. leak in the engine cooling system. longer hot. 5. Replace the pressure cap This can cause a loss of all tightly. coolant and can damage the system and vehicle. Have any leaks fixed right away. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

332 Vehicle Care The vehicle has several indicators running. If they are not, do not The 2.7L engine will shut down to warn of engine overheating. continue to run the engine and have automatically if the ENGINE There is a coolant temperature the vehicle serviced. OVERHEATED STOP ENGINE message displays. gauge in the vehicle's instrument If Steam is Coming from the cluster. See Engine Coolant Engine Compartment If there is an engine overheat Temperature Gauge 0 145. warning, but no steam is seen or heard, the problem may not be too In addition, there are ENGINE { Warning OVERHEATED STOP ENGINE, serious. Sometimes the engine can ENGINE OVERHEATED IDLE Steam and scalding liquids from a get a little too hot when the vehicle: ENGINE, and ENGINE POWER IS hot cooling system are under . Climbs a long hill on a hot day. REDUCED messages in the Driver pressure. Turning the pressure . Stops after high-speed driving. Information Center (DIC). cap, even a little, can cause them . Idles for long periods in traffic. 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 . Tows a trailer; see Trailer Towing get service help right away. See the cap when the cooling system, 0 281. Roadside Assistance Program including the pressure cap, is hot. If the ENGINE OVERHEATED 0 437. Wait for the cooling system and STOP ENGINE or the ENGINE If the decision is made to lift the pressure cap to cool. OVERHEATED IDLE ENGINE hood, make sure the vehicle is message appears with no sign of parked on a level surface. If No Steam is Coming from steam, try this for a minute or so: 2.7L L4, 4.3L V6, 5.3L V8, and 6.2L the Engine Compartment 1. Turn the air conditioning off. V8 Engines The ENGINE OVERHEATED STOP 2. Turn the heater on to the Check to see if the engine cooling ENGINE or the ENGINE highest temperature and to the fans are running. If the engine is OVERHEATED IDLE ENGINE highest fan speed. Open the overheating, the fans should be message, along with a low coolant windows as necessary. condition, can indicate a serious problem. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 333 3. When it is safe to do so, pull off If there is no sign of steam, idle the the road, shift to P (Park) or engine for five minutes while Caution N (Neutral) and let the parked. If the warning is still engine idle. displayed, turn off the engine until it After driving in the overheated cools down. engine protection operating If the temperature overheat gauge is mode, the engine oil will be no longer in the overheat zone or an Overheated Engine severely degraded. Any repairs overheat warning no longer performed before the engine is displays, the vehicle can be driven. Protection cool may cause engine damage. Continue to drive the vehicle slowly Operating Mode Allow the engine to cool before for about 10 minutes. Keep a safe attempting any repair. Repair the vehicle distance from the vehicle in If an overheated engine condition front. If the warning does not come exists and the ENGINE POWER IS cause of coolant loss, change the back on, continue to drive normally REDUCED message displays, an oil, and reset the oil life system. 0 and have the cooling system overheat protection mode which See Engine Oil 321. checked for proper fill and function. alternates firing groups of cylinders helps to prevent engine damage. In If the warning continues, pull over, this mode, a loss in power and Engine Fan stop, and park the vehicle engine performance will be noticed. The vehicle has electric cooling right away. This operating mode allows the fan(s). The fans may be heard If there is still no sign of steam and vehicle to be driven to a safe place spinning at low speed during most the vehicle is equipped with an in an emergency. Driving extended everyday driving. The fans may turn engine driven cooling fan, push distances and/or towing a trailer in off if no cooling is required. Under down the accelerator until the the overheat protection mode heavy vehicle loading, trailer towing, engine speed is about twice as fast should be avoided. high outside temperatures, as normal idle speed for at least or operation of the air conditioning five minutes while the vehicle is system, the fans may change to parked. If the warning is still there, high speed and an increase in fan turn off the engine and get everyone noise may be heard. This is normal out of the vehicle until it cools down. and indicates that the cooling system is functioning properly. The GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

334 Vehicle Care fans will change to low speed when displays, washer fluid will need to additional cooling is no longer be added to the windshield washer Caution (Continued) required. fluid reservoir. . Do not use engine coolant The electric engine cooling fans (antifreeze) in the may run after the engine has been windshield washer. It can turned off. This is normal and no damage the windshield service is required. washer system and paint. . Do not mix water with Washer Fluid ready-to-use washer fluid. What to Use Open the cap with the washer Water can cause the symbol on it. Add washer fluid until solution to freeze and When windshield washer fluid needs damage the washer fluid to be added, be sure to read the the tank is full. See Engine Compartment Overview 0 316 for tank and other parts of the manufacturer's instructions before washer system. use. Use a fluid that has sufficient reservoir location. protection against freezing in an . When using concentrated area where the temperature may fall Caution washer fluid, follow the below freezing. manufacturer instructions for . Do not use washer fluid that adding water. Adding Washer Fluid contains any type of water . Fill the washer fluid tank The vehicle has a low washer fluid repellent coating. This can only three-quarters full when message on the DIC that comes on cause the wiper blades to it is very cold. This allows when the washer fluid is low. The chatter or skip. for fluid expansion if message is displayed for (Continued) freezing occurs, which could 15 seconds at the start of each damage the tank if it is ignition cycle. When the WASHER completely full. FLUID LOW ADD FLUID message GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 335 Brakes Some driving conditions or climates in many other ways if the wrong can cause a brake squeal when the replacement brake parts are Disc brake pads have built-in wear brakes are first applied or lightly installed or parts are improperly indicators that make a high-pitched applied. This does not mean installed. warning sound when the brake pads something is wrong with the brakes. are worn and new pads are needed. Brake Pad Life System The sound can come and go or be Properly torqued wheel nuts are heard all the time the vehicle is necessary to help prevent brake When to Change Brake Pads moving, except when applying the pulsation. When tires are rotated, brake pedal firmly. inspect brake pads for wear and This vehicle has a system that evenly tighten wheel nuts in the estimates the remaining life of the proper sequence to torque front and rear brake pads. Brake { Warning specifications in Capacities and pad life is displayed in the Driver 0 Information Center (DIC), along with The brake wear warning sound Specifications 430. a percentage for each axle. The Brake linings should always be means that soon the brakes will system must be reset every time the replaced as complete axle sets. not work well. That could lead to brake pads are changed. a crash. When the brake wear Brake Pedal Travel warning sound is heard, have the When the system has determined vehicle serviced. See your dealer if the brake pedal that the brake pads need to be does not return to normal height, replaced, a message will display, or if there is a rapid increase in which may include mileage pedal travel. This could be a sign remaining. Caution that brake service may be required. Brake pads should always be replaced as complete axle sets. Continuing to drive with worn-out Replacing Brake System Parts brake pads could result in costly Always replace brake system parts How to Reset the Brake Pad brake repair. with new, approved replacement Life System parts. If this is not done, the brakes The system will automatically detect may not work properly. The braking when significantly worn brake pads performance expected can change are replaced. When the ignition is GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

336 Vehicle Care turned on after new pads and wear How to Disable the Brake Pad Brake Fluid sensors are installed, a message Life System will display. Follow the prompts to reset the system. The brake pad life system can be turned off. This may be necessary if The brake pad life system can also aftermarket brake pads without wear be manually reset: sensors are installed. When the 1. Display Brake Pad Life on the system is turned off, the front and DIC. rear brake pad life percentages will See Driver Information Center not display. However, the built-in The brake master cylinder reservoir (DIC) (Midlevel and Uplevel) wear indicators that make a is filled with GM approved DOT 4 0 160 or Driver Information high-pitched warning sound when brake fluid as indicated on the Center (DIC) (Base Level) the brake pads are worn can still reservoir cap. See Engine 0 159. determine when the pads should be Compartment Overview 0 316 for replaced. See Brakes 0 335. the location of the reservoir. 2. Press the thumbwheel or the trip odometer reset stem if the To turn off the brake pad life system: Checking Brake Fluid vehicle does not have DIC 1. Display Brake Pad Life on the With the vehicle in P (Park) on a buttons. Select front or rear DIC. level surface, the brake fluid level pads as appropriate. See Driver Information Center should be between the minimum 3. Select YES on the confirmation (DIC) (Midlevel and Uplevel) and maximum marks on the brake message, or press the trip 0 160 or Driver Information fluid reservoir. odometer reset stem on a base Center (DIC) (Base Level) 0 159. There are only two reasons why the level DIC. Repeat for pads on brake fluid level in the reservoir may the other axle if they were also 2. Select DISABLE. go down: replaced. To turn the brake pad life system . Normal brake lining wear. When back on, follow the above steps but new linings are installed, the select ENABLE in Step 2. fluid level goes back up. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 337 . A fluid leak in the brake When the brake fluid falls to a low hydraulic system. Have the level, the brake warning light comes Caution brake hydraulic system fixed. on. See Brake System Warning With a leak, the brakes will not Light 0 151. If brake fluid is spilled on the work well. vehicle's painted surfaces, the Brake fluid absorbs water over time paint finish can be damaged. Always clean the brake fluid which degrades the effectiveness of Immediately wash off any painted reservoir cap and the area around the brake fluid. Replace brake fluid surface. the cap before removing it. at the specified intervals to prevent increased stopping distance. See Do not top off the brake fluid. 0 Adding fluid does not correct a leak. Maintenance Schedule 415. Battery - North America If fluid is added when the linings are What to Add The original equipment battery is worn, there will be too much fluid Use only GM approved DOT 4 maintenance free. Do not remove when new brake linings are the cap and do not add fluid. installed. Add or remove fluid, as brake fluid from a clean, sealed container. See Recommended Refer to the replacement number necessary, only when work is done 0 on the brake hydraulic system. Fluids and Lubricants 425. shown on the original battery label when a new battery is needed. See { Warning Engine Compartment Overview { Warning 0 316 for battery location. The wrong or contaminated brake If too much brake fluid is added, it Stop/Start System can spill on the engine and burn, fluid could result in damage to the Vehicles equipped with a 2.7L L3B, if the engine is hot enough. You brake system. This could result in the loss of braking leading to a 3.0L LM2, 5.3L L84 or 6.2L L87 are or others could be burned, and equipped with a Stop/Start system the vehicle could be damaged. possible injury. Always use the proper GM approved brake fluid. to shut off the engine to help Add brake fluid only when work is conserve fuel. See Stop/Start done on the brake hydraulic System 0 222. system. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

338 Vehicle Care Vehicles with the Stop/Start system See California Proposition Negative Battery Cable have an Absorbed Glass Mat (AGM) 65 Warning 0 313 and the back Disconnection 12-volt battery. Installation of a cover. standard 12-volt battery will result in { Warning reduced 12-volt battery life. When Vehicle Storage using a 12-volt battery charger on Before disconnecting the negative the 12-volt AGM battery, some { Warning battery cable, turn off all features, chargers have an AGM battery Batteries have acid that can burn turn the ignition off, and remove setting on the charger. If available, the key, if equipped, from the use the AGM setting on the charger you and gas that can explode. vehicle. If this is not done, you or to limit charge voltage to 14.8 volts. You can be badly hurt if you are others could be injured, and the Follow the charger manufacturer’s not careful. See Jump Starting - instructions. North America 0 395 for tips on vehicle could be damaged. working around a battery without { Warning getting hurt. Caution WARNING: Battery posts, Infrequent Usage: Remove the terminals, and related black, negative (−) cable from the If the battery is disconnected with accessories contain lead and lead battery to keep the battery from the ignition on or the vehicle in compounds, chemicals known to running down. Retained Accessory Power the State of California to cause (RAP), the OnStar back-up cancer and birth defects or other Extended Storage: Remove the battery will be permanently reproductive harm. Batteries also black, negative (−) cable from the discharged and will need to be battery or use a battery trickle contain other chemicals known to replaced. charger. the State of California to cause cancer. WASH HANDS AFTER 1. Make sure the lamps, features, HANDLING. For more information and accessories are turned off. go to www.P65Warnings.ca.gov/ passenger-vehicle. 2. Turn the ignition off and remove the key, if equipped. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 339 For vehicles equipped with the Stop/ For vehicles not equipped with the Negative Battery Cable Start system: Stop/Start system: Reconnection

Caution

When reconnecting the battery: . Use the original nut from the vehicle to secure the negative battery cable. Do not use a different nut. If you need a replacement nut, see your dealer. . Tighten the nut with a hand tool. Do not use an impact 1. Loosen and remove the 1. Loosen the negative battery wrench or power tools to negative battery cable nut (1) cable nut (1). tighten the nut. at the battery sensor 2. Remove the negative battery The vehicle could be damaged if connection. cable clamp (2) from the these guidelines are not followed. 2. Remove the negative battery negative battery post. cable (2) from the battery 3. Cover the negative battery sensor stud. cable clamp, and negative Caution 3. Cover the negative battery battery post with a cable terminal, battery sensor non-conductive material to Do not use paints, lubricants, stud, and negative battery post prevent any contact with the or corrosion inhibitors on the nut with a non-conductive material negative battery cable. that secures the negative battery to prevent any contact with the cable to the vehicle. This could negative battery cable. damage the vehicle. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

340 Vehicle Care For vehicles equipped with the Stop/ When to Change Lubricant Start system: Refer to Maintenance Schedule 1. Install the negative battery 0 415 to determine how often to cable to the battery change the lubricant. sensor stud. What to Use 2. Install the negative battery Refer to Recommended Fluids and cable nut to the battery sensor 0 stud and tighten. Lubricants 425 to determine what kind of lubricant to use. 3. Turn the ignition on. For vehicles not equipped with the Front Axle Stop/Start system: When to Check and Change 1. Install the negative battery 1. Fill Plug Lubricant cable clamp to the negative 2. Drain Plug It is not necessary to regularly battery post. To get an accurate reading, the check front axle fluid unless a leak 2. Tighten the negative battery vehicle should be on a level is suspected, or an unusual noise is cable nut. surface. heard. A fluid loss could indicate a 3. Turn the ignition on. If the level is below the bottom of problem. Have it inspected and the fill plug (1) hole, located on the repaired. transfer case, some lubricant will Four-Wheel Drive How to Check Lubricant need to be added. Add enough Transfer Case lubricant to raise the level to the To get an accurate reading, the bottom of the fill plug (1) hole. Use vehicle should be on a level When to Check Lubricant care not to overtighten the plug. surface. Refer to Maintenance Schedule 0 415 to determine when to check the lubricant. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 341 Rear Axle two. The rear axle assembly must be supported on a flat, level surface When to Check Lubricant to get a true reading. It is not necessary to regularly How to Check Lubricant check rear axle fluid unless a leak is suspected or an unusual noise is heard. A fluid loss could indicate a problem. Have it inspected and repaired. All axle assemblies are filled by volume of fluid during production. They are not filled to reach a certain . When the differential is cold, add level. When checking the fluid level enough lubricant to raise the on any axle, variations in the level from 0 mm (0 in) to 3.2 mm readings can be caused by factory (1/8 in) below the fill plug 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 To get an accurate reading, the add enough lubricant to raise the driven before checking the fluid vehicle should be on a level level to the bottom of the fill level, it may appear lower than surface. plug hole. normal because fluid has traveled out along the axle tubes and has . For the 2.7L, 4.3L, and 5.3L What to Use not drained back to the sump area. engines, the proper level is Refer to Recommended Fluids and Therefore, a reading taken 1.0 mm to 19.0 mm (0.04 in to Lubricants 0 425 to determine what five minutes after the vehicle has 0.7 in) below the bottom of the kind of lubricant to use. been driven will appear to have a fill hole, located on the rear axle. lower fluid level than a vehicle that Add only enough fluid to reach has been stationary for an hour or the proper level. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

342 Vehicle Care . For the 6.2L engine, the proper system of the vehicle manufactured TAMPERING WITH NOISE level is from 15 mm to 40 mm by General Motors. Defects in CONTROL SYSTEM (0.6 in to 1.6 in) below the design, assembly or in any part, PROHIBITED bottom of the fill plug hole, component or system of the vehicle located on the rear axle. Add as manufactured by General Federal law prohibits the following only enough fluid to reach the Motors, which, at the time it left acts or the causing thereof: proper level. General Motors’s control, caused 1. The removal or rendering noise emissions to exceed Federal What to Use inoperative by any person, standards, are covered by this other than for purposes of Refer to Recommended Fluids and warranty for the life of the vehicle. maintenance, repair, 0 Lubricants 425 to determine what The following information relates to or replacement, of any device kind of lubricant to use. compliance with federal noise or element of design emission standards for vehicles with incorporated into any new Noise Control System a Gross Vehicle Weight Rating vehicle for the purpose of noise (GVWR) of more than 4 536 kg control prior to its sale or Noise Emissions Warranty (10,000 lb). The Maintenance delivery to the ultimate General Motors warrants to the first Schedule provides information on purchaser or while it is in person who purchases this vehicle maintaining the noise control system use; or for purposes other than resale and to minimize degradation of the noise 2. The use of the vehicle after to each subsequent purchaser that emission control system during the such device or element of this vehicle as manufactured by life of the vehicle. The noise control design has been removed or General Motors, was designed, built system warranty is given in the rendered inoperative by any and equipped to conform at the time warranty manual. person. it left General Motors’s control with These standards apply only to Among those acts presumed to all applicable U.S. EPA Noise vehicles sold in the United States. Control Regulations. This warranty constitute tampering are the acts covers this vehicle as designed, listed below. built and equipped by General Motors, and is not limited to any particular part, component or GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 343 Insulation: Starter Switch Check Ignition Transmission Removal of the noise shields or any Lock Check underhood insulation. { Warning If equipped with Key Access Engine: When you are doing this ignition, while parked, and with the Removal or rendering the engine inspection, the vehicle could parking brake set, try to turn the speed governor, if equipped, move suddenly. If the vehicle ignition off in each shift lever position. The ignition should turn to inoperative so as to allow engine moves, you or others could be off only when the shift lever is in speed to exceed manufacturer injured. specifications. P (Park). The ignition key should come out Fan and Drive: 1. Before starting this check, be only when the ignition is off. Contact . Removal of the fan clutch, sure there is enough room your dealer if service is required. if equipped, or rendering the around the vehicle. clutch inoperative. 2. Apply both the parking brake Park Brake and P (Park) . Removal of the fan shroud, and the regular brake. Mechanism Check if equipped. Do not use the accelerator Air Intake: pedal, and be ready to turn off { Warning the engine immediately if it . Removal of the air cleaner starts. When you are doing this check, silencer. 3. Try to start the engine in each the vehicle could begin to move. . Modification of the air cleaner. gear. The vehicle should start You or others could be injured and property could be damaged. Exhaust: only in P (Park) or N (Neutral). If the vehicle starts in any other Make sure there is room in front . Removal of the muffler and/or position, contact your dealer for of the vehicle in case it begins to resonator. service. roll. Be ready to apply the regular . Removal of the exhaust pipes brake at once should the vehicle and exhaust pipe clamps. begin to move. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

344 Vehicle Care Park on a fairly steep hill, with the Replacement blades come in vehicle facing downhill. Keeping different types and are removed in your foot on the regular brake, set different ways. For proper type and the parking brake. length, see Maintenance 0 . To check the parking brake's Replacement Parts 427. holding ability: With the engine running and the transmission in Caution N (Neutral), slowly remove foot pressure from the regular brake Allowing the wiper arm to touch pedal. Do this until the vehicle is the windshield when no wiper held by the parking brake only. blade is installed could damage the windshield. Any damage that . To check the P (Park) occurs would not be covered by mechanism's holding ability: 2. Lift up on the latch in the the vehicle warranty. Do not allow With the engine running, shift to middle of the wiper blade the wiper arm to touch the P (Park). Then release the where the wiper arm attaches. windshield. parking brake followed by the 3. With the latch open, pull the regular brake. wiper blade down toward the Contact your dealer if service is Front Wiper Blade windshield far enough to required. Replacement release it from the J-hooked end of the wiper arm. To replace the wiper blade: Wiper Blade Replacement 4. Remove the wiper blade. 1. Pull the wiper assembly away Windshield wiper blades should be from the windshield. 5. Reverse Steps 1–3 for wiper replaced periodically. See blade replacement. Maintenance Schedule 0 415. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 345 Windshield Replacement Gas Strut(s) Caution HUD System This vehicle is equipped with gas strut(s) to provide assistance in Do not apply tape or hang any The windshield is part of the HUD lifting and holding open the hood/ objects from gas struts. Also do system. If the windshield must be trunk/liftgate system in full open not push down or pull on gas replaced, get one that is designed position. struts. This may cause damage to for HUD or the HUD image may the vehicle. look out of focus. { Warning Driver Assistance Systems See Maintenance Schedule 0 415. If the gas struts that hold open If the windshield needs to be the hood, trunk, and/or liftgate fail, replaced and the vehicle is you or others could be seriously equipped with a front camera sensor injured. Take the vehicle to your for the Driver Assistance Systems, a dealer for service immediately. GM replacement windshield is recommended. The replacement Visually inspect the gas struts for windshield must be installed signs of wear, cracks, or other according to GM specifications for damage periodically. Check to proper alignment. If it is not, these make sure the hood/trunk/liftgate systems may not work properly, they is held open with enough force. may display messages, or they may If struts are failing to hold the not work at all. See your dealer for hood/trunk/liftgate, do not proper windshield replacement. operate. Have the vehicle Hood serviced. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

346 Vehicle Care Headlamp Aiming Bulb Replacement Headlamp aim has been preset and For the proper type of replacement should need no further adjustment. bulbs, or any bulb changing If the vehicle is damaged in a crash, procedure not listed in this section, the headlamp aim may be affected. contact your dealer. If adjustment to the headlamps is necessary, see your dealer. Caution Do not replace incandescent bulbs with aftermarket LED replacement bulbs. This can Trunk cause damage to the vehicle electrical system.

Halogen Bulbs

{ Warning

Halogen bulbs have pressurized gas inside and can burst if you drop or scratch the bulb. You or others could be injured. Be sure to read and follow the instructions on the bulb package. Liftgate GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 347 LED Lighting Headlamp Replacement Taillamps, Turn Signal, This vehicle has several LED lamps. See your dealer for headlamp Stoplamps, and Back-Up For replacement of any LED lighting replacement. Lamps assembly, contact your dealer. Turn Signal Lamp Base Level Taillamp Assembly Headlamps, Front Turn Replacement Signal, Sidemarker, and Base Level Parking Lamps 1. Open the hood. Base Level Headlamp 2. Turn the bulb socket counterclockwise to remove it Assembly from the headlamp assembly and pull it straight out. 3. Remove the bulb by pulling it straight out of the bulb socket. 4. Replace the bulb and reverse Steps 1–3 to reinstall. Uplevel 1. Stoplamp/Turn Signal Lamp See your dealer for headlamp 2. Back-Up Lamp replacement. Uplevel Taillamp Assembly See your dealer for taillamp replacement. 1. Turn Signal Lamps It is recommended to replace the grommets when replacing a bulb. See your dealer. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

348 Vehicle Care To replace one of these bulbs: Center High-Mounted 1. Open the tailgate. Stoplamp (CHMSL) and Cargo Lamp This procedure is for the regular cab only. For crew cab and double cab see your dealer.

4. Pull the rear lamp assembly outward and rearward away from the box side to remove it from the vehicle. 2. Remove the two rear lamp assembly screws. 5. Turn the bulb socket counterclockwise. 6. Pull the bulb straight out from the socket. 1. Cargo Lamp Bulbs 7. Replace the bulb and reverse 2. Center High-Mounted Steps 1–5 to reinstall. Stoplamp (CHMSL) Bulb GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 349 To replace one of these bulbs: 2. Turn the bulb socket Electrical System counterclockwise and pull the bulb straight out of the socket. Electrical System Overload The vehicle has fuses to protect against an electrical system overload. Fuses also protect power devices in the vehicle. Replace a bad fuse with a new one of the identical size and rating. If there is a problem on the road and a fuse needs to be replaced, there 1. Remove the two screws and lift are some spare fuses and a fuse off the lamp assembly. puller in the left instrument panel 3. Replace the bulb and reverse fuse block. The same amperage 2. Turn the bulb socket Step 2 to reinstall. fuse can also be borrowed. Choose counterclockwise and pull it some feature of the vehicle that is straight out. not needed to use and replace it as 3. Pull the bulb straight out from soon as possible. the socket. Headlamp Wiring License Plate Lamp An electrical overload may cause the lamps to go on and off, or in To replace the bulb: some cases to remain off. Have the 1. Reach behind the rear bumper headlamp wiring checked right away and locate the bulb. if the lamps go on and off or remain off. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

350 Vehicle Care Windshield Wipers Engine Compartment { Danger If the wiper motor overheats due to Fuse Block heavy snow or ice, the windshield Fuses and circuit breakers are If the vehicle has a diesel engine, wipers will stop until the motor cools marked with their ampere rating. see the Duramax diesel and will then restart. Do not exceed the supplement. Although the circuit is protected specified amperage rating when The engine compartment fuse block from electrical overload, overload replacing fuses and circuit is in the engine compartment, on due to heavy snow or ice may breakers. Use of an oversized the passenger side of the vehicle. cause wiper linkage damage. fuse or circuit breaker can result Always clear ice and heavy snow in a vehicle fire. You and others from the windshield before using the could be seriously injured or windshield wipers. killed. If the overload is caused by an electrical problem and not snow or To check a fuse, look at the ice, be sure to get it fixed. silver-colored band inside the fuse. If the band is broken or melted, Fuses and Circuit replace the fuse. Be sure to replace Breakers a bad fuse with a new one of the identical size and rating. The wiring circuits in the vehicle are protected from short circuits by a Fuses of the same amperage can combination of fuses and circuit be temporarily borrowed from breakers. This greatly reduces the another fuse location, if a fuse goes Lift the cover to access the fuse chance of damage caused by out. Replace the fuse as soon as block. electrical problems. possible. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 351

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 end cap. The vehicle may not be equipped with all of the fuses, relays, and features shown.

Fuses Usage Fuses Usage 1 High-beam left 2 High-beam right 3 Headlamp left GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

352 Vehicle Care

Fuses Usage Fuses Usage Fuses Usage 4 Headlamp right 27 Horn 47 Transmission control module 6 TIM 28 – ignition 7 – 29 – 48 – 8 Fog lamp 30 – 49 Transmission 9 VKM 31 – control module 10 – 32 Rear window 50 A/C clutch defogger 11 Police upfitter 51 Transfer case 33 Heated mirror 12 – control module 13 Washer front 34 Parking lamp left 52 Front wiper 14 Washer rear 37 Euro trailer 53 Center 38 TIM high-mounted 15 MSB driver stop lamp 39 – 16 – 54 Trailer 17 IECL 1 40 Misc ignition reverse lamp 19 DC/AC inverter 41 Trailer 55 Trailer parking lamp back-up lamp 20 IECR 2 42 Park lamp right 56 SADS 21 MSB pass 44 – 57 TTPM 22 IECL 2 45 Second fuel pump 58 Starter motor 24 Eboost 1 46 Engine control 60 Active fuel 25 REC module ignition management 1 26 – GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 353

Fuses Usage Fuses Usage Relays Usage 61 VES 78 Engine control 5 Headlamp 62 Integrated chassis module 18 DC/AC inverter control 79 Auxiliary battery 23 Rear window module/CVS 80 Cabin defogger 63 Trailer battery cooling pump 35 Parking lamp 65 Auxiliary 81 Trailer stop/turn 36 Run/Crank underhood lamp right 43 Second fuel pump electrical center 82 TIM 59 A/C clutch 66 Cooling fan 83 FTZM motor left 64 Starter motor 84 Trailer brake 67 Active fuel 70 Starter pinion management 2 85 ENG 77 Powertrain 68 – 86 Engine control module 69 Starter pinion 87 Injector B even 71 Cooling fan 88 O2 B sensor 72 Cooling fan right 89 O2 A sensor 73 Trailer stop/turn lamp left 90 Injector A odd 74 TIM 91 Engine control module throttle 75 DEFC control 76 Electric RNG BDS 92 Cool fan clutch GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

354 Vehicle Care Instrument Panel Fuse Block (Right)

1. Push the tab at the top of fuse block down. 2. Pull the top of the fuse block outward. The right instrument panel fuse block access door is on the 3. Reverse Steps 1–2 to reinstall. passenger side edge of the instrument panel. Pull off the cover to access the front of the fuse block.

To access the back of the fuse block: GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 355

The vehicle may not be equipped Fuses Usage with all of the fuses, relays, and features shown. F19 DLIS Fuses Usage F20 Cooled seats F1 Right doors F21 NOT R/C F2 Left doors F22 Heated steering wheel F3 Universal remote F23 MISC R/C system F24 Instrument panel F4 – cluster ignition/ Overhead F5 – F25 Heating, ventilation, 6 Front blower and air conditioning F8 Lumbar switch ignition/Heating, F10 Body control ventilation, and air module 6/Body control conditioning auxiliary module 7 F26 USB ports/Special F11 Seat/CLM equipment option retained accessory F12 Body control power module 3/Body control module 5 F27 Accessory power outlet/retained Back F14 Mirrors/Windows accessory power module F28 Accessory power F17 Steering wheel outlet/Battery controls F18 VPM/OBS DET GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

356 Vehicle Care

Fuses Usage Fuses Usage Relays Usage F30 Sensing and F49 Body control module 1 1 Run/Crank diagnostic module/ F50 – 2 Retained accessory Parking brake F51 Battery 1 power/Accessory 1 F31 Body control module 4 F52 Battery 2 4 Retained accessory F32 Special equipment power/Accessory 2 option/Data link F53 – 5 – connection F54 Sunroof F33 Body control module 8 F55 Driver power seat Instrument Panel Fuse F34 Cargo lamp F56 DC DC TRANS 1 Block (Left) F40 CGM F57 DC DC TRANS 2 F41 Infotainment 1 F58 Infotainment 2 F42 TCP F43 – Circuit Usage Breakers F44 AVM 1 Accessory power F45 Body control module 2 outlet 2 F46 Heating, ventilation, 2 Accessory power and air conditioning/ outlet 1/Cigarette Battery 1 Lighter F47 Instrument panel 3 Accessory power cluster/Battery outlet 3 The left instrument panel fuse block F48 Transmission control 4 Accessory power access door is on the driver side module outlet 4 edge of the instrument panel. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 357

The vehicle may not be equipped Fuses Usage with all of the fuses, relays, and features shown. F1 Rear heated seats left/right Pull off the cover to access the fuse block. F3 Euro trailer F4 – F5 Front Bolster F6 Heated and cooled seats left/right F8 Rear seat entertainment/Theft deterrent F9 Passive entry/Passive start/Driver seat module F10 – F11 Sunshade F12 Passenger power seat F13 Export power take off/ Special equipment option 1 The vehicle may not be equipped F14 – with all of the fuses, relays, and features shown. F15 – F16 AMP GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

358 Vehicle Care Fuses Usage Relays Usage Wheels and Tires F17 MFEG K5 MFEG minor 2 Tires F18 – K6 MFEG major 2 F20 Endgate K7 Anti-theft Every new GM vehicle has high-quality tires made by a F22 Rear sliding window K8 – leading tire manufacturer. See F23 – the warranty manual for F24 – information regarding the tire warranty and where to get F25 – service. For additional F26 – information refer to the tire F27 – manufacturer.

Circuit Usage { Warning Breakers . Poorly maintained and CB1 – improperly used tires are dangerous. Relays Usage . Overloading the tires can K1 Rear sliding cause overheating as a window open result of too much K2 Rear sliding window flexing. There could be a close blowout and a serious K3 MFEG major 1 crash. See Vehicle Load 0 K4 MFEG minor 1 Limits 209. (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 359 performance on most road surfaces Warning (Continued) Warning (Continued) and weather conditions. Original equipment tires designed to GM's . Underinflated tires pose . Replace any tires that specific tire performance criteria the same danger as have been damaged by have a TPC specification code overloaded tires. The impacts with potholes, molded onto the sidewall. Original resulting crash could curbs, etc. equipment all-season tires can be identified by the last two characters cause serious injury. . Improperly repaired tires of this TPC code, which will Check all tires frequently can cause a crash. Only be “MS.” to maintain the the dealer or an recommended pressure. authorized tire service Consider installing winter tires on Tire pressure should be center should repair, the vehicle if frequent driving on snow or ice-covered roads is checked when the tires replace, dismount, and are cold. expected. All-season tires provide mount the tires. adequate performance for most . Overinflated tires are . Do not spin the tires in winter driving conditions, but they more likely to be cut, excess of 56 km/h may not offer the same level of punctured, or broken by (35 mph) on slippery traction or performance as winter a sudden impact — such tires on snow or ice-covered roads. surfaces such as snow, See Winter Tires 0 359. as when hitting a pothole. mud, ice, etc. Excessive Keep tires at the spinning may cause the Winter Tires recommended pressure. tires to explode. . Worn or old tires can This vehicle was not originally cause a crash. If the equipped with winter tires. Winter All-Season Tires tires are designed for increased tread is badly worn, traction on snow and ice-covered This vehicle may come with replace them. roads. Consider installing winter all-season tires. These tires are (Continued) tires on the vehicle if frequent designed to provide good overall driving on ice or snow covered GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

360 Vehicle Care roads is expected. See your dealer Low-Profile Tires All-Terrain Tires for details regarding winter tire availability and proper tire selection. If the vehicle has 275/60R20 or This vehicle may have all-terrain Also, see Buying New Tires 0 378. 275/50R22 size tires, they are tires. These tires provide good classified as low-profile tires. performance on most road surfaces, With winter tires, there may be weather conditions, and for off-road decreased dry road traction, driving. See Off-Road Driving 0 200. increased road noise, and shorter Caution tread life. After changing to winter The tread pattern on these tires may tires, be alert for changes in vehicle Low-profile tires are more wear more quickly than other tires. handling and braking. susceptible to damage from road Consider rotating the tires more hazards or curb impact than frequently than at 12 000 km If using winter tires: standard profile tires. Tire and/or (7,500 mi) intervals if irregular wear . Use tires of the same brand and wheel assembly damage can is noted when the tires are tread type on all four wheel occur when coming into contact inspected. See Tire Inspection 0 positions. with road hazards like potholes, 375. . Use only radial ply tires of the or sharp edged objects, or when same size, load range, and sliding into a curb. The warranty Tire Sidewall Labeling speed rating as the original does not cover this type of Useful information about a tire is equipment tires. damage. Keep tires set to the molded into the sidewall. The correct inflation pressure and Winter tires with the same speed examples show a typical rating as the original equipment tires when possible, avoid contact with passenger and light truck tire may not be available for H, V, W, Y, curbs, potholes, and other road sidewall. and ZR speed rated tires. If winter hazards. tires with a lower speed rating are chosen, never exceed the tire's maximum speed capability. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 361 code molded onto the sidewall. (4) Tire Identification Number GM's TPC specifications meet or (TIN) : The letters and numbers exceed all federal safety following the DOT code are the guidelines. Tire Identification Number (TIN). (3) DOT (Department of The TIN shows the Transportation) : The manufacturer and plant code, Department of Transportation tire size, and date the tire was (DOT) code indicates that the manufactured. The TIN is tire is in compliance with the molded onto both sides of the U.S. Department of tire, although only one side may Transportation Motor Vehicle have the date of manufacture. Passenger (P-Metric)/Spare Tire Safety Standards. (5) Tire Ply Material : The type (1) Tire Size : The tire size code DOT Tire Date of of cord and number of plies in is a combination of letters and Manufacture : The last four the sidewall and under the tread. numbers used to define a digits of the TIN indicate the tire (6) Uniform Tire Quality particular tire's width, height, manufactured date. The first two Grading (UTQG) : Tire aspect ratio, construction type, digits represent the week manufacturers are required to and service description. See the (01-52) and the last two digits, grade tires based on three “Tire Size” illustration later in this the year. For example, the third performance factors: treadwear, section for more detail. week of the year 2010 would traction, and temperature (2) TPC Spec (Tire have a four-digit DOT date resistance. For more Performance Criteria of 0310. information, see Uniform Tire Specification) : Original Quality Grading 0 380. equipment tires designed to GM's specific tire performance criteria have a TPC specification GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

362 Vehicle Care (7) Maximum Cold Inflation code molded onto the sidewall. Load Limit : Maximum load that GM's TPC specifications meet or can be carried and the exceed all federal safety maximum pressure needed to guidelines. support that load. For (3) Dual Tire Maximum Load : information on recommended Maximum load that can be tire pressure see Tire Pressure carried and the maximum 0 367 and Vehicle Load Limits 0 pressure needed to support that 209. load when used in a dual (8) Temporary Use Only : Only configuration. For information on use a temporary spare tire until recommended tire pressure see the road tire is repaired and Light Truck (LT-Metric) Tire Tire Pressure 0 367 and Vehicle replaced. This spare tire should (1) Tire Size : The tire size code Load Limits 0 209. not be driven on over 112 km/h is a combination of letters and (4) DOT (Department of (70 mph), or 88 km/h (55 mph) numbers used to define a Transportation) : The when pulling a trailer, with the particular tire's width, height, Department of Transportation proper inflation pressure. See aspect ratio, construction type, 0 (DOT) code indicates that the Full-Size Spare Tire 394. and service description. See the tire is in compliance with the “Tire Size” illustration later in this U.S. Department of section for more detail. Transportation Motor Vehicle (2) TPC Spec (Tire Safety Standards. Performance Criteria DOT Tire Date of Specification) : Original Manufacture : The last four equipment tires designed to digits of the TIN indicate the tire GM's specific tire performance manufactured date. The first two criteria have a TPC specification digits represent the week GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 363 (01-52) and the last two digits, load when used as a single. For (2) Tire Width : The three-digit the year. For example, the third information on recommended number indicates the tire section week of the year 2010 would tire pressure see Tire Pressure width in millimeters from have a four-digit DOT date 0 367 and Vehicle Load Limits sidewall to sidewall. 0 of 0310. 209. (3) Aspect Ratio : A two-digit (5) Tire Identification Number number that indicates the tire (TIN) : The letters and numbers Tire Designations height-to-width measurements. following the DOT code are the Tire Size For example, if the tire size Tire Identification Number (TIN). aspect ratio is 75, as shown in The examples show a typical The TIN shows the item C of the tire illustration, it passenger vehicle and light manufacturer and plant code, would mean that the tire's truck tire size. tire size, and date the tire was sidewall is 75 percent as high as manufactured. The TIN is it is wide. molded onto both sides of the (4) Construction Code : A letter tire, although only one side may code is used to indicate the type have the date of manufacture. of ply construction in the tire. (6) Tire Ply Material : The type The letter R means radial ply of cord and number of plies in Passenger (P-Metric) Tire construction; the letter D means the sidewall and under the tread. diagonal or bias ply (1) Passenger (P-Metric) Tire : construction; and the letter B (7) Single Tire Maximum The United States version of a Load : Maximum load that can means belted-bias ply metric tire sizing system. The construction. be carried and the maximum letter P as the first character in pressure needed to support that the tire size means a passenger (5) Rim Diameter : Diameter of vehicle tire engineered to the wheel in inches. standards set by the U.S. Tire and Rim Association. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

364 Vehicle Care (6) Service Description : These (2) Tire Width : The three-digit (7) Service Description : The characters represent the load number indicates the tire section service description indicates the index and speed rating of the width in millimeters from load index and speed rating of a tire. The load index represents sidewall to sidewall. tire. If two numbers are given as the load carrying capacity a tire (3) Aspect Ratio : A two-digit in the example, 120/116, then is certified to carry. The speed number that indicates the tire this represents the load index for rating is the maximum speed a height-to-width measurements. single versus dual wheel usage tire is certified to carry a load. For example, if the tire size (single/dual). The speed rating is aspect ratio is 75, as shown in the maximum speed a tire is item 3 of the light truck certified to carry a load. (LT-Metric) tire illustration, it would mean that the tire's Tire Terminology and sidewall is 75 percent as high as Definitions it is wide. Air Pressure : The amount of Light Truck (LT-Metric) Tire (4) Construction Code : A letter air inside the tire pressing (1) Light Truck (LT-Metric) code is used to indicate the type outward on each square inch of Tire : The United States version of ply construction in the tire. the tire. Air pressure is of a metric tire sizing system. The letter R means radial ply expressed in kPa (kilopascal) The letters LT as the first two construction; the letter D means or psi (pounds per square inch). characters in the tire size mean diagonal or bias ply a light truck tire engineered to Accessory Weight : The construction; and the letter B combined weight of optional standards set by the U.S. Tire means belted-bias ply and Rim Association. accessories. Some examples of construction. optional accessories are (5) Rim Diameter : Diameter of automatic transmission, power the wheel in inches. windows, power seats, and air conditioning. (6) Load Range : Load Range. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 365 Aspect Ratio : The relationship Curb Weight : The weight of a GAWR RR : Gross Axle Weight of a tire's height to its width. motor vehicle with standard and Rating for the rear axle. See 0 Belt : A rubber coated layer of optional equipment including the Vehicle Load Limits 209. cords between the plies and the maximum capacity of fuel, oil, Intended Outboard Sidewall : tread. Cords may be made from and coolant, but without The side of an asymmetrical tire steel or other reinforcing passengers and cargo. that must always face outward materials. DOT Markings : A code molded when mounted on a vehicle. Bead : The tire bead contains into the sidewall of a tire Kilopascal (kPa) : The metric steel wires wrapped by steel signifying that the tire is in unit for air pressure. compliance with the U.S. cords that hold the tire onto Light Truck (LT-Metric) Tire : A the rim. Department of Transportation (DOT) Motor Vehicle Safety tire used on light duty trucks and Bias Ply Tire : A pneumatic tire Standards. The DOT code some multipurpose passenger in which the plies are laid at includes the Tire Identification vehicles. alternate angles less than Number (TIN), an alphanumeric Load Index : An assigned 90 degrees to the centerline of designator which can also number ranging from 1 to 279 the tread. identify the tire manufacturer, that corresponds to the load Cold Tire Pressure : The production plant, brand, and carrying capacity of a tire. date of production. amount of air pressure in a tire, Maximum Inflation Pressure : measured in kPa (kilopascal) GVWR : Gross Vehicle Weight The maximum air pressure to or psi (pounds per square inch) Rating. See Vehicle Load Limits which a cold tire can be inflated. before a tire has built up heat 0 209. The maximum air pressure is from driving. See Tire Pressure molded onto the sidewall. 0 367. GAWR FRT : Gross Axle Weight Rating for the front axle. See Vehicle Load Limits 0 209. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

366 Vehicle Care Maximum Load Rating : The higher or deeper than the same Speed Rating : An load rating for a tire at the moldings on the other sidewall alphanumeric code assigned to maximum permissible inflation of the tire. a tire indicating the maximum pressure for that tire. Passenger (P-Metric) Tire : A speed at which a tire can Maximum Loaded Vehicle tire used on passenger and operate. Weight : The sum of curb some light duty trucks and Traction : The friction between weight, accessory weight, multipurpose vehicles. the tire and the road surface. vehicle capacity weight, and Recommended Inflation The amount of grip provided. production options weight. Pressure : Vehicle Tread : The portion of a tire that Normal Occupant Weight : The manufacturer's recommended comes into contact with number of occupants a vehicle tire inflation pressure as shown the road. is designed to seat multiplied by on the tire placard. Treadwear Indicators : Narrow 68 kg (150 lb). See Vehicle Load See Tire Pressure 0 367 and 0 0 bands, sometimes called wear Limits 209. Vehicle Load Limits 209. bars, that show across the tread Occupant Distribution : Radial Ply Tire : A pneumatic of a tire when only 1.6 mm Designated seating positions. tire in which the ply cords that (1/16 in) of tread remains. See extend to the beads are laid at When It Is Time for New Tires Outward Facing Sidewall : The 0 side of an asymmetrical tire that 90 degrees to the centerline of 377. has a particular side that faces the tread. UTQGS (Uniform Tire Quality outward when mounted on a Rim : A metal support for a tire Grading Standards) : A tire vehicle. The side of the tire that and upon which the tire beads information system that provides contains a whitewall, bears are seated. consumers with ratings for a white lettering, or bears Sidewall : The portion of a tire tire's traction, temperature, and manufacturer, brand, and/or between the tread and the bead. treadwear. Ratings are model name molding that is determined by tire manufacturers using GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 367 government testing procedures. Tire Pressure The ratings are molded into the Warning (Continued) Tires need the correct amount of sidewall of the tire. See Uniform . Poor handling. Tire Quality Grading 0 380. air pressure to operate effectively. . Rough ride. Vehicle Capacity Weight : The . Needless damage from number of designated seating { Warning positions multiplied by road hazards. 68 kg (150 lb) plus the rated Neither tire underinflation nor cargo load. See Vehicle Load overinflation is good. The Tire and Loading Limits 0 209. Underinflated tires, or tires Information label on the vehicle Vehicle Maximum Load on the that do not have enough air, indicates the original equipment can result in: Tire : Load on an individual tire tires and the correct cold tire due to curb weight, accessory . Tire overloading and inflation pressures. The weight, occupant weight, and overheating which could recommended pressure is the cargo weight. lead to a blowout. minimum air pressure needed to support the vehicle's maximum Vehicle Placard : A label . Premature or load carrying capacity. permanently attached to a irregular wear. For additional information vehicle showing the vehicle . Poor handling. capacity weight and the original regarding how much weight the equipment tire size and . Reduced fuel economy. vehicle can carry, and an example of the Tire and Loading recommended inflation pressure. Overinflated tires, or tires that Information label, see Vehicle See “Tire and Loading have too much air, can Load Limits 0 209. How the Information Label” under Vehicle result in: Load Limits 0 209. vehicle is loaded affects vehicle . Unusual wear. handling and ride comfort. Never (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

368 Vehicle Care load the vehicle with more matches the recommended Tire Pressure for weight than it was designed to pressure on the Tire and High-Speed Operation carry. Loading Information label, no further adjustment is necessary. When to Check { Warning If the inflation pressure is low, Check the pressure of the tires add air until the recommended Driving at high speeds, 160 km/h once a month or more. pressure is reached. If the (100 mph) or higher, puts Do not forget the spare tire, inflation pressure is high, press additional strain on tires. if the vehicle has one. See on the metal stem in the center Sustained high-speed driving Full-Size Spare Tire 0 394 for of the tire valve to release air. causes excessive heat buildup additional information. Re-check the tire pressure with and can cause sudden tire failure. This could cause a crash, and the tire gauge. How to Check you or others could be killed. Use a good quality pocket-type Put the valve caps back on the Some high-speed rated tires gauge to check tire pressure. valve stems to keep out dirt and require inflation pressure adjustment for high-speed Proper tire inflation cannot be moisture and prevent leaks. Use only valve caps designed for the operation. When speed limits and determined by looking at the tire. road conditions allow the vehicle Check the tire inflation pressure vehicle by GM. TPMS sensors could be damaged and would to be driven at high speeds, make when the tires are cold, meaning sure the tires are rated for the vehicle has not been driven not be covered by the vehicle warranty. high-speed operation, are in for at least three hours or no excellent condition, and are set to more than 1.6 km (1 mi). the correct cold tire inflation Remove the valve cap from the pressure for the vehicle load. tire valve stem. Press the tire gauge firmly onto the valve to get a pressure measurement. If the cold tire inflation pressure GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 369 Tire Pressure Monitor Accordingly, when the low tire remain continuously illuminated. pressure telltale illuminates, you This sequence will continue upon System should stop and check your tires as subsequent vehicle start-ups as The Tire Pressure Monitor System soon as possible, and inflate them long as the malfunction exists. (TPMS) uses radio and sensor to the proper pressure. Driving on a When the malfunction indicator is technology to check tire pressure significantly under-inflated tire illuminated, the system may not be levels. The TPMS sensors monitor causes the tire to overheat and can able to detect or signal low tire the air pressure in your tires and lead to tire failure. Under-inflation pressure as intended. TPMS transmit tire pressure readings to a also reduces fuel efficiency and tire malfunctions may occur for a variety receiver located in the vehicle. tread life, and may affect the of reasons, including the installation vehicle's handling and stopping Each tire, including the spare (if of replacement or alternate tires or ability. provided), should be checked wheels on the vehicle that prevent monthly when cold and inflated to Please note that the TPMS is not a the TPMS from functioning properly. the inflation pressure recommended substitute for proper tire Always check the TPMS malfunction by the vehicle manufacturer on the maintenance, and it is the driver's telltale after replacing one or more vehicle placard or tire inflation responsibility to maintain correct tire tires or wheels on your vehicle to pressure label. (If your vehicle has pressure, even if under-inflation has ensure that the replacement or tires of a different size than the size not reached the level to trigger alternate tires and wheels allow the indicated on the vehicle placard or illumination of the TPMS low tire TPMS to continue to function tire inflation pressure label, you pressure telltale. properly. should determine the proper tire Your vehicle has also been See Tire Pressure Monitor inflation pressure for those tires.) equipped with a TPMS malfunction Operation 0 370. As an added safety feature, your indicator to indicate when the See Radio Frequency Statement vehicle has been equipped with a system is not operating properly. 0 443. tire pressure monitoring system The TPMS malfunction indicator is (TPMS) that illuminates a low tire combined with the low tire pressure pressure telltale when one or more telltale. When the system detects a of your tires is significantly malfunction, the telltale will flash for under-inflated. approximately one minute and then GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

370 Vehicle Care Tire Pressure Monitor shown on the Tire and Loading inflation pressure for the tires when Information label. See Vehicle Load they are cold. See Vehicle Load Operation Limits 0 209. Limits 0 209, for an example of the This vehicle may have a Tire A message to check the pressure in Tire and Loading Information label Pressure Monitor System (TPMS). and its location. Also see Tire a specific tire displays in the Driver 0 The TPMS is designed to warn the Information Center (DIC). The low Pressure 367. driver when a low tire pressure tire pressure warning light and the The TPMS can warn about a low condition exists. TPMS sensors are DIC warning message come on at tire pressure condition but it does mounted onto each tire and wheel each ignition cycle until the tires are not replace normal tire assembly, excluding the spare tire inflated to the correct inflation maintenance. See Tire Inspection and wheel assembly. The TPMS pressure. If the vehicle has DIC 0 375, Tire Rotation 0 376 and Tires sensors monitor the air pressure in buttons, tire pressure levels can be 0 358. the tires and transmit the tire viewed. For additional information pressure readings to a receiver and details about the DIC operation Caution located in the vehicle. and displays, see Driver Information Center (DIC) (Midlevel and Uplevel) Tire sealant materials are not all 0 160 or Driver Information Center the same. A non-approved tire (DIC) (Base Level) 0 159. sealant could damage the TPMS The low tire pressure warning light sensors. TPMS sensor damage may come on in cool weather when caused by using an incorrect tire the vehicle is first started, and then sealant is not covered by the turn off as the vehicle is driven. This vehicle warranty. Always use only When a low tire pressure condition could be an early indicator that the the GM approved tire sealant is detected, the TPMS illuminates air pressure is getting low and available through your dealer or the low tire pressure warning light needs to be inflated to the proper included in the vehicle. located on the instrument cluster. pressure. If the warning light comes on, stop as soon as possible and inflate the A Tire and Loading Information label tires to the recommended pressure shows the size of the original equipment tires and the correct GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 371 TPMS Malfunction Light and . The TPMS sensor matching . Operating electronic devices or Message process was not done or not being near facilities using radio completed successfully after wave frequencies similar to the The TPMS will not function properly rotating the tires. The TPMS could cause the TPMS if one or more of the TPMS sensors malfunction light and the DIC sensors to malfunction. are missing or inoperable. When the message should go off after system detects a malfunction, the If the TPMS is not functioning successfully completing the properly, it cannot detect or signal a low tire pressure warning light sensor matching process. See flashes for about one minute and low tire pressure condition. See "TPMS Sensor Matching your dealer for service if the TPMS then stays on for the remainder of Process" later in this section. the ignition cycle. A DIC warning malfunction light and DIC message message also displays. The . One or more TPMS sensors are come on and stay on. missing or damaged. The malfunction light and DIC warning Tire Fill Alert (If Equipped) message come on at each ignition malfunction light and the DIC cycle until the problem is corrected. message should go off when the This feature provides visual and Some of the conditions that can TPMS sensors are installed and audible alerts outside the vehicle to cause these to come on are: the sensor matching process is help when inflating an underinflated performed successfully. See tire to the recommended cold tire . One of the road tires has been your dealer for service. pressure. replaced with the spare tire. The spare tire does not have a . Replacement tires or wheels do When the low tire pressure warning TPMS sensor. The malfunction not match the original equipment light comes on: tires or wheels. Tires and wheels light and the DIC message 1. Park the vehicle in a safe, level other than those recommended should go off after the road tire place. is replaced and the sensor could prevent the TPMS from matching process is performed functioning properly. See Buying 2. Set the parking brake firmly. 0 successfully. See "TPMS Sensor New Tires 378. 3. Place the vehicle in P (Park). Matching Process" later in this section. 4. Add air to the tire that is underinflated. The turn signal lamp will flash. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

372 Vehicle Care When the recommended the valve stem. When the . The battery of the TPMS sensor pressure is reached, the horn recommended pressure is reached, is low. sounds once and the turn the horn sounds once. If the tire fill alert does not operate signal lamp will stop flashing If the turn signal lamp does not flash due to TPMS interference, move the and briefly turn solid. within 15 seconds after starting to vehicle about 1 m (3 ft) back or Repeat these steps for all inflate the tire, the tire fill alert has forward and try again. If the tire fill underinflated tires that have not been activated or is not working. alert feature is not working, use a illuminated the low tire pressure If the hazard warning flashers are tire pressure gauge. warning light. on, the tire fill alert visual feedback TPMS Sensor Matching will not work properly. Process { Warning The TPMS will not activate the tire Each TPMS sensor has a unique Overinflating a tire could cause fill alert properly under the following identification code. The identification the tire to rupture and you or conditions: code needs to be matched to a new others could be injured. Do not . There is interference from an tire/wheel position after rotating the exceed the maximum pressure external device or transmitter. vehicle’s tires or replacing one or more of the TPMS sensors. Also, listed on the tire sidewall. . The air pressure from the 0 the TPMS sensor matching process See Tire Sidewall Labeling 360 inflation device is not sufficient 0 should be performed after replacing and Vehicle Load Limits 209. to inflate the tire. a spare tire with a road tire . There is a malfunction in containing the TPMS sensor. The If the tire is overinflated by more the TPMS. malfunction light and the DIC than 35 kPa (5 psi), the horn will message should go off at the next sound multiple times and the turn . There is a malfunction in the horn or turn signal lamps. ignition cycle. The sensors are signal lamp will continue to flash for matched to the tire/wheel positions, several seconds after filling stops. . The identification code of the using a TPMS relearn tool, in the To release and correct the pressure, TPMS sensor is not registered to following order: driver side front tire, while the turn signal lamp is still the system. passenger side front tire, passenger flashing, briefly press the center of side rear tire, and driver side rear. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 373 See your dealer for service or to See Driver Information Center yes and press the trip purchase a relearn tool. A TPMS (DIC) (Midlevel and Uplevel) odometer reset stem to confirm relearn tool can also be purchased. 0 160 or Driver Information the selection. See Tire Pressure Monitor Sensor Center (DIC) (Base Level) 0 The horn sounds twice to Activation Tool at 159. signal the receiver is in relearn www.gmtoolsandequipment.com or 4. If the vehicle has an uplevel mode and the TIRE call 1-800-GM TOOLS DIC, use the DIC controls on LEARNING ACTIVE message (1-800-468-6657). the right side of the steering displays on the DIC screen. There are two minutes to match the wheel to scroll to the Tire 6. Start with the driver side first tire/wheel position, and Pressure screen under the DIC front tire. five minutes overall to match all four info page. tire/wheel positions. If it takes 7. Place the relearn tool against If the vehicle has a base level the tire sidewall, near the valve longer, the matching process stops DIC, use the trip odometer and must be restarted. stem. Then press the button to reset stem to scroll to the Tire activate the TPMS sensor. The TPMS sensor matching Pressure screen. A horn chirp confirms that the process is: 5. If the vehicle has an uplevel sensor identification code has 1. Set the parking brake. DIC, press and hold the been matched to this tire and 2. Turn the ignition on without thumbwheel located in the wheel position. starting the vehicle. center of the DIC controls on 8. Proceed to the passenger side the right side of the steering front tire, and repeat the 3. Uplevel DIC Only: Make sure wheel. the Tire Pressure info page procedure in Step 7. option is turned on. The info If the vehicle has a base level 9. Proceed to the passenger side pages on the DIC can be DIC, press and hold the trip rear tire, and repeat the turned on and off through the odometer reset stem for about procedure in Step 7. Options menu. five seconds. A message asking if the process should 10. Proceed to the driver side rear begin should appear. Select tire, and repeat the procedure in Step 7. The horn sounds two GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

374 Vehicle Care times to indicate the sensor Prior to use, the vehicle must learn The Trailering App can be used to identification code has been the sensors by following the view the tire pressures after the matched to the driver side rear learning process. See Trailering App recommended trailer tire pressures tire, and the TPMS sensor 0 296. have been entered. Refer to the matching process is no longer trailer tire placard on the trailer or active. The TIRE LEARNING the trailer tire sidewall for the ACTIVE message on the DIC recommended tire pressure. display screen goes off. The system is compatible with trailer 11. Turn the vehicle off. tires that have placard pressure 12. Set all four tires to the values from 103 - 689 kpa (15 - recommended air pressure 100 psi). The hole in the wheel for level as indicated on the Tire the tire stem must be 11.43 mm and Loading Information label. (0.453 in) in diameter. Use of the pressure sensors on a wheel with a Trailer Tire Pressure different stem hole size could result Monitoring Operation in loss of air from the tire. If equipped, the Trailer Tire If a low trailer tire pressure condition Pressure Monitoring System Contact your trailer service center or is detected, the TTPMS displays a (TTPMS) is designed to monitor the tire service center to have the warning message on the DIC. If the pressure of the trailer tires and warn pressure sensors installed inside warning message is displayed, stop the driver when a low pressure the trailer tires. The technician as soon as possible and inflate the condition exists. TTPMS sensors for should insert the sensor stem tires to the recommended pressure four tires are provided. The system through the hole in the trailer wheel. shown on the tire placard on the can accommodate a trailer with up When the sensor is correctly trailer. positioned, the nut on the sensor to six tires if additional sensors are In addition, the TTPMS monitors the purchased from the dealer. Also, the stem should be tightened to 8 Y (6 lb ft). When mounting the trailer temperature of the trailer tires. If the system can be paired with up to five system detects a high temperature individual trailers. tire onto the trailer wheel be careful not to damage the sensor. on one or more of the trailer tires, a warning message will be displayed GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 375 on the DIC. If this warning message . The TTPMS sensor learning . If the system does not receive is displayed, stop as soon as process was not done or not the signal from an individual possible, and inspect the completed successfully. The DIC sensor, an error message may overheated trailer tire. Common message should go off after not occur until the vehicle has causes for high trailer tire successfully completing the been driver for a period of time. temperature are underinflation, sensor learning process. See If the TTPMS is not functioning overloading, or tire damage. "TTPMS Sensor Learning properly, it cannot detect or signal a Process" under Trailering App TTPMS Malfunction Message 0 low tire condition. See your dealer 296. for service if the DIC message The TTPMS will not function . One or more TTPMS sensors comes on and stays on when the properly if one or more of the trailer are missing or damaged. The trailer tire pressures have been tire sensors are missing or DIC message should go off checked and determined to be inoperable. If the system detects a when the TTPMS sensors are correct. malfunction, a DIC message installed and the sensor learning indicates that the system requires process is performed Tire Inspection service. Some of the conditions that successfully. See "TTPMS can cause the service message to Sensor Learning Process" under We recommend that the tires, occur are: Trailering App 0 296. including the spare tire, if the vehicle has one, be inspected . One of the trailer tires has been . Operating electronic devices or replaced with the spare tire being near facilities using radio for signs of wear or damage at which does not have a learned wave frequencies similar to the least once a month. TTPMS sensor. The DIC TTPMS could cause interference Replace the tire if: message should turn off after the to the TTPMS which could pressure sensor is installed in cause loss of signal reception . The indicators at three or the tire, and the learning process from the sensor. more places around the tire is performed successfully. See can be seen. "TTPMS Sensor Learning Process" under Trailering App 0 296. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

376 Vehicle Care . There is cord or fabric Anytime unusual wear is Do not include the spare tire in showing through the tire's noticed, rotate the tires as soon the tire rotation. rubber. as possible, check for proper tire Adjust the front and rear tires to . The tread or sidewall is inflation pressure, and check for the recommended inflation cracked, cut, or snagged damaged tires or wheels. If the pressure on the Tire and deep enough to show cord or unusual wear continues after the Loading Information label after fabric. rotation, check the wheel the tires have been rotated. alignment. See Tire Pressure 0 367 and . The tire has a bump, bulge, See When It Is Time for New Vehicle Load Limits 0 209. or split. Tires 0 377 and Wheel 0 Reset the Tire Pressure Monitor . The tire has a puncture, cut, Replacement 381. System. See Tire Pressure or other damage that cannot Monitor Operation 0 370. be repaired well because of the size or location of the Check that all wheel nuts are damage. properly tightened. See “Wheel Nut Torque” under Capacities Tire Rotation and Specifications 0 430, and Removing the Flat Tire and Tires should be rotated every “ Installing the Spare Tire under 12 000 km (7,500 mi). See ” Tire Changing 0 385. Maintenance Schedule 0 415. Tires are rotated to achieve a { Warning uniform wear for all tires. The first rotation is the most Use this rotation pattern when Rust or dirt on a wheel, or on the parts to which it is fastened, can important. rotating the tires. make wheel nuts become loose (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 377 takes place. GM recommends that Warning (Continued) tires, including the spare if equipped, be replaced after six after time. The wheel could come years, regardless of tread wear. To off and cause a crash. When identify the age of a tire, use the tire changing a wheel, remove any manufacture date which is the last rust or dirt from places where the four digits of the DOT Tire wheel attaches to the vehicle. In Identification Number (TIN) which is an emergency, a cloth or a paper molded into one side of the tire towel can be used; however, use sidewall. The first two digits a scraper or wire brush later to represent the week (01-52) and the remove all rust or dirt. last two digits, the year. For example, the third week of the year Treadwear indicators are one way to 2010 would have a four-digit DOT Lightly coat the inner diameter of tell when it is time for new tires. date of 0310. the wheel hub opening with Treadwear indicators appear when wheel bearing grease after a the tires have only 1.6 mm (1/16 in) Vehicle Storage or less of tread remaining. Some wheel change or tire rotation to Tires age when stored normally commercial truck tires may not have prevent corrosion or rust mounted on a parked vehicle. Park treadwear indicators. buildup. Do not get grease on a vehicle that will be stored for at See Tire Inspection 0 375 and Tire least a month in a cool, dry, clean the wheel mounting surface or Rotation 0 376 for additional area away from direct sunlight to on the wheel nuts or bolts. information. slow aging. This area should be free When It Is Time for New The rubber in tires ages over time. of grease, gasoline, or other This also applies to the spare tire, substances that can deteriorate Tires if the vehicle has one, even if it is rubber. never used. Multiple factors Factors, such as maintenance, Parking for an extended period can including temperatures, loading temperatures, driving speeds, cause flat spots on the tires that conditions, and inflation pressure vehicle loading, and road conditions may result in vibrations while affect the wear rate of the tires. maintenance affect how fast aging GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

378 Vehicle Care driving. When storing a vehicle for sidewall near the tire size. If the the new tires on the rear axle at least a month, remove the tires or tires have an all-season tread (two for single rear wheels, four raise the vehicle to reduce the design, the TPC Spec number for dual rear wheels). weight from the tires. will be followed by MS for mud and snow. See Tire Sidewall { Warning Buying New Tires Labeling 0 360 for additional GM has developed and matched information. Tires could explode during specific tires for the vehicle. The improper service. Attempting GM recommends replacing worn to mount or dismount a tire original equipment tires installed tires in complete sets of four (six were designed to meet General could cause injury or death. for dual rear wheels). Uniform Only your dealer or authorized Motors Tire Performance Criteria tread depth on all tires will help Specification (TPC Spec) tire service center should to maintain the performance of mount or dismount the tires. system rating. When the vehicle. Braking and replacement tires are needed, handling performance may be GM strongly recommends adversely affected if all the tires buying tires with the same TPC are not replaced at the same { Warning Spec rating. time. If proper rotation and Mixing tires of different sizes, GM's exclusive TPC Spec maintenance have been done, brands, or types may cause system considers over a dozen all four tires (six for dual rear loss of control of the vehicle, critical specifications that impact wheels) should wear out at resulting in a crash or other the overall performance of the about the same time. See Tire vehicle damage. Use the vehicle, including brake system Rotation 0 376 for information correct size, brand, and type performance, ride and handling, on proper tire rotation. However, of tires on all wheels. traction control, and tire if it is necessary to replace only pressure monitoring one axle set of worn tires, place (Continued) performance. GM's TPC Spec number is molded onto the tire's GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 379 Winter tires with the same speed vehicle. See Vehicle Load Limits Warning (Continued) rating as the original equipment 0 209 for the label location and This vehicle may have a tires may not be available for H, more information about the Tire different size spare than the V, W, Y and ZR speed rated and Loading Information label. road tires originally installed tires. Never exceed the winter on the vehicle. When new, the tires’ maximum speed capability Different Size Tires and vehicle included a spare tire when using winter tires with a Wheels lower speed rating. and wheel assembly with a If wheels or tires are installed that similar overall diameter as the If the vehicle tires must be are a different size than the original road tires and wheels, so it is replaced with a tire that does not equipment wheels and tires, vehicle all right to drive on it. The have a TPC Spec number, make performance, including its braking, spare tire was developed for sure they are the same size, ride and handling characteristics, use on this vehicle and will not load range, speed rating, and stability, and resistance to rollover affect vehicle handling. construction (radial) as the may be affected. If the vehicle has electronic systems such as antilock original tires. brakes, rollover airbags, traction Vehicles that have a tire control, electronic stability control, { Warning pressure monitoring system or All-Wheel Drive, the performance could give an inaccurate of these systems can also be Using bias-ply tires on the low-pressure warning if non-TPC affected. vehicle may cause the wheel Spec rated tires are installed. rim flanges to develop cracks See Tire Pressure Monitor { Warning after many miles of driving. System 0 369. A tire and/or wheel could fail If different sized wheels are used, suddenly and cause a crash. The Tire and Loading there may not be an acceptable Use only radial-ply tires with Information label indicates the level of performance and safety if the wheels on the vehicle. original equipment tires on the tires not recommended for those (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

380 Vehicle Care Uniform Tire Quality Grading Treadwear 200 Traction AA Warning (Continued) (UTQG) system does not apply Temperature A wheels are selected. This to deep tread, winter tires, All Passenger Car Tires Must increases the chance of a crash compact spare tires, tires with Conform to Federal Safety and serious injury. Only use GM nominal rim diameters of Requirements In Addition To specific wheel and tire systems 10 to 12 inches (25 to 30 cm), These Grades. developed for the vehicle, and or to some limited-production have them properly installed by a tires. Treadwear GM certified technician. While the tires available on The treadwear grade is a General Motors passenger cars comparative rating based on the See Buying New Tires 0 378 and and light trucks may vary with wear rate of the tire when tested Accessories and Modifications respect to these grades, they under controlled conditions on a 0 313. must also conform to federal specified government test safety requirements and course. For example, a tire Uniform Tire Quality additional General Motors Tire graded 150 would wear one and Grading Performance Criteria (TPC) one-half (1½) times as well on standards. the government course as a tire The following information relates graded 100. The relative to the system developed by the Quality grades can be found performance of tires depends United States National Highway where applicable on the tire upon the actual conditions of Traffic Safety Administration sidewall between tread shoulder their use, however, and may (NHTSA), which grades tires by and maximum section width. For depart significantly from the treadwear, traction, and example: norm due to variations in driving temperature performance. This habits, service practices and applies only to vehicles sold in differences in road the United States. The grades characteristics and climate. are molded on the sidewalls of most passenger car tires. The GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 381 Traction laboratory test wheel. Sustained Wheel Alignment and Tire The traction grades, from high temperature can cause the Balance highest to lowest, are AA, A, B, material of the tire to degenerate and reduce tire life, and The tires and wheels were aligned and C. Those grades represent and balanced at the factory to the tire's ability to stop on wet excessive temperature can lead to sudden tire failure. The grade provide the longest tire life and best pavement as measured under overall performance. Adjustments to controlled conditions on C corresponds to a level of wheel alignment and tire balancing specified government test performance which all are not necessary on a regular surfaces of asphalt and passenger car tires must meet basis. Consider an alignment check . A tire marked C may under the Federal Motor Safety if there is unusual tire wear or the have poor traction performance. Standard No. 109. Grades B and vehicle is significantly pulling to one A represent higher levels of side or the other. Some slight pull to Warning: The traction grade the left or right, depending on the assigned to this tire is based on performance on the laboratory test wheel than the minimum crown of the road and/or other road straight-ahead braking traction surface variations such as troughs tests, and does not include required by law. Warning: The temperature grade for this tire is or ruts, is normal. If the vehicle is acceleration, cornering, vibrating when driving on a smooth hydroplaning, or peak traction established for a tire that is road, the tires and wheels may need characteristics. properly inflated and not to be rebalanced. See your dealer overloaded. Excessive speed, for proper diagnosis. Temperature underinflation, or excessive The temperature grades are A loading, either separately or in Wheel Replacement combination, can cause heat (the highest), B, and C, Replace any wheel that is bent, representing the tire's resistance buildup and possible tire failure. cracked, or badly rusted or to the generation of heat and its corroded. If wheel nuts keep coming ability to dissipate heat when loose, the wheel, wheel bolts and tested under controlled wheel nuts should be replaced. conditions on a specified indoor If the wheel leaks air, replace it. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

382 Vehicle Care Some aluminum wheels can be Used Replacement Wheels repaired. See your dealer if any of Caution these conditions exist. The wrong wheel can also cause { Warning Your dealer will know the kind of problems with bearing life, brake wheel that is needed. Replacing a wheel with a used cooling, speedometer or one is dangerous. How it has Each new wheel should have the odometer calibration, headlamp been used or how far it has been same load-carrying capacity, aim, bumper height, vehicle driven may be unknown. It could diameter, width, offset and be ground clearance, and tire or tire fail suddenly and cause a crash. mounted the same way as the one it chain clearance to the body and When replacing wheels, use a replaces. chassis. new GM original equipment Replace wheels, wheel bolts, wheel wheel. nuts, or Tire Pressure Monitor Whenever a wheel, wheel bolt, System (TPMS) sensors with new or wheel nut is replaced on a dual GM original equipment parts. wheel setup, check the wheel nut Tire Chains torque after 160,1 600, and { Warning 10 000 km (100,1,000, and { Warning 6,000 mi) of driving. For proper Using the wrong replacement torque, see “Wheel Nut Torque” If the vehicle has LT265/70R17, wheels, wheel bolts, or wheel under Capacities and Specifications LT275/65R18, 275/60R20, or 275/ nuts can be dangerous. It could 0 430. 50R22 size tires, do not use tire affect the braking and handling of See If a Tire Goes Flat 0 383 for chains. They can damage the the vehicle. Tires can lose air, more information. vehicle because there is not and cause loss of control, causing enough clearance. Tire chains a crash. Always use the correct used on a vehicle without the wheel, wheel bolts, and wheel proper amount of clearance can nuts for replacement. cause damage to the brakes, (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 383 If a Tire Goes Flat Warning (Continued) Caution It is unusual for a tire to blowout suspension, or other vehicle Use tire chains only where legal while driving, especially if the tires parts. The area damaged by the and only when necessary. Use are maintained properly. If air goes tire chains could cause you to chains that are the proper size for out of a tire, it is much more likely to lose control of the vehicle and the tires. If the vehicle has 265/ leak out slowly. But if there ever is a you or others may be injured in a 70R17 or 265/65R18 size tires, blowout, here are a few tips about crash. they may be installed on the tires what to expect and what to do: Use another type of traction of the rear axle only. If the vehicle If a front tire fails, the flat tire device only if its manufacturer has 255/70R17 size tires, they creates a drag that pulls the vehicle recommends it for use on the may be installed on the tires of toward that side. Take your foot off vehicle and tire size combination the front and rear axle. Tighten the accelerator pedal and grip the and road conditions. Follow that them as tightly as possible with steering wheel firmly. Steer to manufacturer's instructions. To the ends securely fastened. Drive maintain lane position, and then gently brake to a stop, well off the help avoid damage to the vehicle, slowly and follow the chain road, if possible. drive slowly, readjust, or remove manufacturer's instructions. If you the device if it is contacting the can hear the chains contacting A rear blowout, particularly on a vehicle, and do not spin the the vehicle, stop and retighten curve, acts much like a skid and vehicle's wheels. them. If the contact continues, may require the same correction as slow down until it stops. Driving used in a skid. Stop pressing the If you do find traction devices that too fast or spinning the wheels accelerator pedal and steer to will fit, install them on the rear with chains on will damage the straighten the vehicle. It may be tires. vehicle. very bumpy and noisy. Gently brake to a stop, well off the road, if possible. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

384 Vehicle Care

{ Warning Warning (Continued) Warning (Continued)

Driving on a flat tire will cause anything else, you or others could 2. Put the shift lever in permanent damage to the tire. be badly injured or killed if the P (Park). Re-inflating a tire after it has been vehicle slips off the jack. If a jack 3. For vehicles with four-wheel driven on while severely is provided with the vehicle, only drive with an N (Neutral) underinflated or flat may cause a use it for changing a flat tire. transfer case position, be blowout and a serious crash. sure the transfer case is in a Never attempt to re-inflate a tire If a tire goes flat, avoid further tire drive gear — not in that has been driven on while and wheel damage by driving slowly N (Neutral). severely underinflated or flat. to a level place, well off the road, 4. Turn off the engine and do Have your dealer or an authorized if possible. Turn on the hazard not restart while the vehicle tire service center repair or warning flashers. See Hazard is raised. replace the flat tire as soon as Warning Flashers 0 180. possible. 5. Do not allow passengers to remain in the vehicle. { Warning 6. Place wheel blocks, Changing a tire can be if equipped, on both sides of { Warning dangerous. The vehicle can slip the tire at the opposite corner of the tire being Lifting a vehicle and getting under off the jack and roll over or fall changed. it to do maintenance or repairs is causing injury or death. Find a dangerous without the level place to change the tire. To appropriate safety equipment and help prevent the vehicle from When the vehicle has a flat tire (2), training. If a jack is provided with moving: use the following example as a the vehicle, it is designed only for 1. Set the parking brake firmly. guide to assist in the placement of the wheel blocks (1), if equipped. changing a flat tire. If it is used for (Continued) (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 385 Tire Changing 1. Turn the knob on the jack counterclockwise to lower the Removing the Spare Tire and jack head to release the jack Tools from its holder. 2. Turn the wing nut counterclockwise to remove the wheel blocks and the wheel block retainer. 3. Turn the wing nut used to 1. Wheel Block (If Equipped) retain the storage bag and 2. Flat Tire tools counterclockwise to The following information explains remove it. how to use the jack and change Use the jack handle extensions and a tire. the wheel wrench to remove the underbody-mounted spare tire.

1. Jack 2. Jack Knob 3. Tool Kit 4. Wing Nut Retaining Tool Kit 5. Wheel Blocks 6. Wing Nut Retaining Wheel Blocks The equipment is on the shelf behind the second row seats, if equipped, or behind the front row seats on regular cab models. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

386 Vehicle Care 1. Spare Tire (Valve Stem 2. Assemble the wheel wrench (7) wrench until the spare tire can Pointed Down) and the two jack handle be pulled out from under the 2. Tire/Wheel Retainer extensions (6), as shown. vehicle. 3. Hoist Cable 5. Pull the spare tire out from 4. Hoist Assembly under the vehicle. 5. Hoist Shaft 6. Jack Handle Extensions 7. Wheel Wrench 8. Spare Tire Lock (If Equipped) 9. Hoist Shaft Access Hole 10. Hoist End of Extension Tool 1. Open the spare tire lock cover 3. Insert the hoist end (open on the bumper and use the end) (10) of the extension ignition key to remove the through the hole (9) in the rear 6. Tilt the tire toward the vehicle spare tire lock (8). To remove bumper. with some slack in the cable to the spare tire lock, insert the Do not use the chiseled end of access the tire/wheel retainer. ignition key, turn, and pull the wheel wrench. straight out. 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 counterclockwise to lower the spare tire to the ground. Continue to turn the wheel GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 387 Tilt the retainer and pull it 4. Jack Handle Extensions If the vehicle has a center cap through the center of the wheel 5. Wheel Wrench with wheel nut caps, the wheel along with the cable and nut caps are designed to stay The tools you will be using include spring. with the center cap after they the jack (1), the wheel blocks (2), are loosened. Remove the 7. Put the spare tire near the the jack handle (3), the jack handle entire center cap. flat tire. extensions (4), and the wheel wrench (5). Removing the Flat Tire and Installing the Spare Tire 1. Do a safety check before proceeding. See If a Tire Goes Use the following pictures and Flat 0 383. instructions to remove the flat tire and raise the vehicle.

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 1. Jack the wheel wrench 2. Wheel Blocks counterclockwise. 3. Jack Handle GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

388 Vehicle Care

3. Use the wheel wrench and turn Front Position Rear Position it counterclockwise to loosen 4. If the flat tire is on the front of 5. If the flat tire is on the rear, the wheel nuts. Do not remove the vehicle, position the jack position the jack under the rear the wheel nuts yet. under the bracket attached to axle about 5 cm (2 in) inboard the vehicle's frame, behind the of the shock absorber bracket. flat tire, as shown. { 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. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 389

{ Warning Warning (Continued)

Raising the vehicle with the jack towel can be used; however, use improperly positioned can a scraper or wire brush later to damage the vehicle and even remove all rust or dirt. make the vehicle fall. To help avoid personal injury and vehicle damage, be sure to fit the jack lift head into the proper location before raising the vehicle.

6. Turn the wheel wrench 7. Remove all the wheel nuts and clockwise to raise the vehicle. take off the flat tire. Raise the vehicle far enough off the ground so there is { Warning enough room for the spare tire to fit under the wheel well. Rust or dirt on a wheel, or on the parts to which it is fastened, can make wheel nuts become loose after time. The wheel could come 8. Remove any rust or dirt from the wheel bolts, mounting off and cause a crash. When surfaces, and spare wheel. changing a wheel, remove any rust or dirt from places where the 9. Install the spare tire. wheel attaches to the vehicle. In an emergency, a cloth or a paper (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

390 Vehicle Care

{ Warning Warning (Continued) { Warning

Never use oil or grease on bolts If any stud is damaged because Wheel nuts that are improperly or or nuts because the nuts might of a loose-running wheel, it could incorrectly tightened can cause come loose. The vehicle's wheel be that all of the studs are the wheels to become loose or could fall off, causing a crash. damaged. To be sure, replace all come off. The wheel nuts should studs on the wheel. If the stud be tightened with a torque wrench 10. Put the wheel nuts back on holes in a wheel have become to the proper torque specification with the rounded end of the larger, the wheel could collapse in after replacing. Follow the torque nuts toward the wheel. operation. Replace any wheel if specification supplied by the its stud holes have become larger aftermarket manufacturer when 11. Tighten each wheel nut by or distorted in any way. Inspect using accessory locking wheel hand. Then use the wheel hubs and hub‐piloted wheels for nuts. See Capacities and wrench to tighten the nuts until damage. Because of loose Specifications 0 430 for original the wheel is held against running wheels, piloting pad equipment wheel nut torque the hub. damage may occur and require specifications. 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, completely. wheel nuts or wheels, be sure to Caution use GM original equipment parts. Improperly tightened wheel nuts { Warning can lead to brake pulsation and If wheel studs are damaged, they rotor damage. To avoid expensive can break. If all the studs on a brake repairs, evenly tighten the wheel broke, the wheel could wheel nuts in the proper come off and cause a crash. sequence and to the proper (Continued) (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 391 equipped with. For center caps, Caution (Continued) place the cap on the wheel and tap { Warning it into place until it seats flush with torque specification. See the wheel. The cap only goes on Failure to follow these tire storage Capacities and Specifications one way. Be sure to line up the tab instructions carefully could result 0 430 for the wheel nut torque on the center cap with the in personal injury or property specification. indentation on the wheel. For damage if the hoist cable fails or bolt-on hub caps, align the plastic if the tire comes loose. Make sure nut caps with the wheel nuts and the tire is stored securely before then tighten by hand. Then use the driving. wheel wrench to tighten. Storing a Flat or Spare Tire and Tools Caution Storing an aluminum wheel with a { Warning flat tire under your vehicle for an Storing a jack, a tire, or other extended period of time or with equipment in the passenger the valve stem pointing up can compartment of the vehicle could damage the wheel. Always stow cause injury. In a sudden stop or the wheel with the valve stem pointing down and have the 13. Tighten the nuts firmly in a collision, loose equipment could strike someone. Store all these in wheel/tire repaired as soon as crisscross sequence, as possible. shown, by turning the wheel the proper place. wrench clockwise. When reinstalling the regular wheel and tire, also reinstall either the center cap, or bolt-on hub cap, depending on what the vehicle is GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

392 Vehicle Care 2. Pull the cable and spring Caution through the center of the wheel. Tilt the wheel retainer The tire hoist can be damaged if plate down and through the there is no tension on the cable center wheel. when using it. To have the necessary tension, the spare or Make sure the retainer is fully road tire and wheel assembly seated across the underside of must be installed on the tire hoist the wheel. to use it.

{ Warning 1. Spare Tire (Valve Stem Pointed Down) An improperly stored spare tire 2. Tire/Wheel Retainer could come loose and cause a 3. Hoist Cable crash. To avoid personal injury or 4. Hoist Assembly property damage, always store 5. Hoist Shaft the spare tire when the vehicle is 3. Attach the wheel wrench (7) 6. Jack Handle Extensions parked on a level surface. and extensions (6) together, as 7. Wheel Wrench shown. 8. Spare Tire Lock (If Store the tire under the rear of the Equipped) Caution vehicle in the spare tire carrier. 9. Hoist Shaft Access Hole 10. Hoist End of Extension Tool Use of an air wrench or other 1. Put the tire on the ground at power tools with the hoist the rear of the vehicle with the mechanism is not recommended valve stem pointed down, and (Continued) to the rear. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 393 clockwise until you hear two Caution (Continued) clicks or feel it skip twice. You cannot overtighten the cable. and could damage the system. Use only the tools supplied with the hoist mechanism.

Correctly Stored

4. Insert the hoist end (10) 7. Make sure the tire is stored through the hole (9) in the rear securely. Push, pull, and then bumper and onto the hoist try to turn the tire. If the tire shaft. moves, use the wheel wrench to tighten the cable. Do not use the chiseled end of the wheel wrench. Repeat this tightness check procedure when checking the 5. Raise the tire part way upward. spare tire pressure according Make sure the retainer is to the scheduled maintenance seated in the wheel opening. information or any time the Incorrectly Stored 6. Raise the tire fully against the spare tire is handled due to service of other components. 8. Reinstall the spare tire lock, underside of the vehicle by if the vehicle has one. turning the wheel wrench GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

394 Vehicle Care should not be driven on over four-wheel drive and a different size 112 km/h (70 mph), or 88 km/h spare tire is installed, drive only in (55 mph) when pulling a trailer, at two-wheel drive. the proper inflation pressure. Repair After installing the spare tire on the and replace the road tire as soon as vehicle, stop as soon as possible it is convenient, and stow the spare and check that the spare tire is tire for future use. correctly inflated. Caution Have the damaged or flat road tire Return the jack and tools to their repaired or replaced and installed original location in the vehicle. See If the vehicle has four-wheel drive back onto the vehicle as soon as “Removing the Spare Tire and and a different size spare tire is possible so the spare tire will be Tools.” installed, do not drive in available in case it is needed again. four-wheel drive until the flat tire Do not mix tires and wheels of Full-Size Spare Tire is repaired and/or replaced. The different sizes, because they will not vehicle could be damaged and fit. Keep your spare tire and its If this vehicle came with a full-size wheel together. If the vehicle has a spare tire, it was fully inflated when the repairs would not be covered spare tire that does not match the new, however, it can lose air over by the warranty. Never use original road tires and wheels in size time. Check the inflation pressure four-wheel drive when a different and type, do not include the spare in regularly. size spare tire is installed on the the tire rotation. See Tire Pressure 0 367 and vehicle. Vehicle Load Limits 0 209. For instructions on how to remove, The vehicle may have a different install, or store a spare tire, see Tire size spare tire than the road tires 0 Changing 385. 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 0 360. This spare tire GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 395

Jump Starting Warning (Continued) Caution Jump Starting - North HANDLING. For more information Ignoring these steps could result America go to www.P65Warnings.ca.gov/ in costly damage to the vehicle passenger-vehicle. that would not be covered by the For more information about the vehicle warranty. Trying to start vehicle battery, see Battery - North the vehicle by pushing or pulling it America 0 337. See California Proposition 65 Warning 0 313 and the back will not work, and it could damage If the vehicle's battery (or batteries) cover. the vehicle. has run down, you may want to use another vehicle and some jumper cables to start your vehicle. Be sure { Warning to use the following steps to do it Batteries can hurt you. They can safely. be dangerous because: { Warning . They contain acid that can burn you. WARNING: Battery posts, . They contain gas that can terminals, and related explode or ignite. accessories contain lead and lead . They contain enough compounds, chemicals known to electricity to burn you. the State of California to cause cancer and birth defects or other If you do not follow these steps exactly, some or all of these reproductive harm. Batteries also 1. Good Battery Positive things can hurt you. contain other chemicals known to Terminal the State of California to cause 2. Good Battery Negative cancer. WASH HANDS AFTER Terminal (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

396 Vehicle Care 3. Discharged Battery Remote You would not be able to start Negative Terminal Caution (Continued) your vehicle, and the bad 4. Discharged Battery Remote grounding could damage the damaged. Only use a vehicle that Positive Terminal electrical systems. has a 12-volt system with a The jump start positive post (1) and negative ground for jump starting. To avoid the possibility of the negative post (2) are on the battery vehicles rolling, set the parking of the vehicle providing the jump brake firmly on both vehicles start. 2. If you have a vehicle with a involved in the jump start diesel engine with two procedure. Put the automatic The jump start positive post (4) and batteries, you should know transmission in P (Park) before the negative grounding point (3) for before you begin that, setting the parking brake. If you the discharged battery are on the especially in cold weather, you have a four-wheel-drive passenger side of the vehicle. may not be able to get enough vehicle, be sure the transfer The positive jump start connection power from a single battery in case is in a drive gear, not in for the discharged battery is under a another vehicle to start your N (Neutral). cover. Slide the cover to expose the diesel engine. If your vehicle terminal. has more than one battery, Caution using the battery that is closer 1. Check the other vehicle. to the starter will reduce If any accessories are left on or It must have a 12-volt battery electrical resistance. This is with a negative ground system. plugged in during the jump located on the passenger side, starting procedure, they could be in the rear of the engine damaged. The repairs would not Caution compartment. be covered by the vehicle If the other vehicle does not have 3. Get the vehicles close enough warranty. Whenever possible, turn a 12-volt system with a negative so the jumper cables can off or unplug all accessories on ground, both vehicles can be reach, but be sure the vehicles either vehicle when jump starting. are not touching each other. (Continued) If they are, it could cause an unwanted ground connection. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 397 4. Turn the ignition off on both vehicles. Unplug unnecessary { Warning { Warning accessories plugged into the accessory power outlets. Turn An electric fan can start up even Fans or other moving engine off the radio and all the lamps when the engine is not running parts can injure you badly. Keep that are not needed. This will and can injure you. Keep hands, your hands away from moving avoid sparks and help save clothing, and tools away from any parts once the engine is running. both batteries. And it could underhood electric fan. save the radio! 6. Check that the jumper cables 5. Open the hood on the other do not have loose or missing vehicle and locate the { Warning insulation. If they do, you could positive (+) and negative (−) get a shock. The vehicles terminal locations on that Using a match near a battery can could be damaged too. vehicle. cause battery gas to explode. Before you connect the cables, The positive (+) terminal is People have been hurt doing this, here are some basic things you under a red plastic cover at the and some have been blinded. should know. Positive (+) will positive battery post. To Use a flashlight if you need more go to positive (+) or to a remote uncover the positive (+) light. positive (+) terminal if the terminal, open the red plastic Battery fluid contains acid that vehicle has one. Negative (−) will go to a heavy, unpainted cover. can burn you. Do not get it on metal engine part or to a you. If you accidentally get it in For more information on the remote negative (−) terminal if location of the remote your eyes or on your skin, flush the vehicle has one. positive (+) and remote the place with water and get negative (−) terminals, see medical help immediately. Do not connect positive (+) to Engine Compartment Overview negative (−) or you will get a 0 316. short that would damage the battery and maybe other parts too. And do not connect the negative (−) cable to the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

398 Vehicle Care negative (−) terminal on the 11. Start the vehicle with the good Towing the Vehicle dead battery because this can battery and run the engine for a cause sparks. while. Caution 7. Connect one end of the red 12. Try to start the vehicle that had positive (+) cable to the remote the dead battery. If it will not Incorrectly towing a disabled positive (+) terminal of the start after a few tries, it vehicle may cause damage. The vehicle with the discharged probably needs service. damage would not be covered by battery. the vehicle warranty. Do not lash 8. Do not let the other end touch Caution or hook to suspension metal. Connect it to the components. Use the proper positive (+) terminal of the If the jumper cables are straps around the tires to secure good battery. Use a remote connected or removed in the the vehicle. Do not drag a locked positive (+) terminal if the wrong order, electrical shorting wheel/tire while loading the vehicle has one. may occur and damage the vehicle. Do not use a sling type vehicle. The repairs would not be 9. Connect one end of the black lift to tow the vehicle. This could covered by the vehicle warranty. negative (−) cable to the damage the vehicle. Always connect and remove the negative (−) terminal of the good battery. Use a remote jumper cables in the correct order, making sure that the cables do GM recommends a flatbed tow truck negative (−) terminal if the to transport a disabled vehicle. Use vehicle has one. not touch each other or other metal. ramps to help reduce approach Do not let the other end touch angles, if necessary. A towed anything until the next step. vehicle should have its drive wheels Jumper Cable Removal off the ground. Contact Roadside 10. Connect the other end of the Assistance or a professional towing negative (−) cable to the Reverse the sequence exactly when service if the disabled vehicle must remote negative (−) terminal to removing the jumper cables. be towed. the discharged battery. After starting the disabled vehicle and removing the jumper cables, allow it to idle for several minutes. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 399 Front Attachment Points recreational vehicle towing are professional for additional advice dinghy and dolly towing. Dinghy and equipment towing is towing the vehicle with all recommendations. four wheels on the ground. Dolly . Whether the vehicle is ready to towing is towing the vehicle with two be towed. Just as preparing the wheels on the ground and two vehicle for a long trip, make sure wheels on a dolly. the vehicle is prepared to be Here are some important things to towed. consider before recreational vehicle Follow the tow vehicle towing: manufacturer’s instructions. . Before towing the vehicle, become familiar with the local Caution laws that apply to recreational vehicle towing. These laws may Use of a shield mounted in front The vehicle is equipped with vary by region. of the vehicle grille could restrict specific attachment points to be airflow and cause damage to the used to pull the vehicle onto a . The towing capacity of the towing vehicle. Read the tow transmission. The repairs would flatbed car carrier from a flat road not be covered by the vehicle surface. Do not use these vehicle manufacturer's warranty. If using a shield, only attachment points to pull the vehicle recommendations. use one that attaches to the from snow, mud or sand. . How far the vehicle can be towed. Some vehicles have towing vehicle. Recreational Vehicle restrictions on how far and how Towing long the vehicle can be towed. . Whether the vehicle has the Recreational vehicle towing means proper towing equipment. See towing the vehicle behind another your dealer or trailering vehicle, such as a motor home. The two most common types of GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

400 Vehicle Care Dinghy Towing Two-wheel-drive vehicles and (Two-Wheel-Drive Vehicles and vehicles with a single-speed transfer { Warning Vehicles with a Single-Speed case should not be towed with all four wheels on the ground. Shifting a four-wheel-drive Transfer Case) vehicle's transfer case into Dinghy Towing (Vehicles with a N (Neutral) can allow the vehicle Two-Speed Transfer Case) to move even if the transmission is in P (Park). You or others could be injured. Set the parking brake and use wheel blocks before shifting the transfer case to N (Neutral).

To dinghy tow: 1. Position the vehicle being towed behind the tow vehicle, facing forward and on a level surface. Caution 2. Securely attach the vehicle If a vehicle with two-wheel drive Only dinghy tow four-wheel-drive being towed to the tow vehicle. or a single-speed transfer case is vehicles with a two-speed transfer 3. Start the engine. towed with all four wheels on the case that have an N (Neutral) and a ground, the drivetrain 4 n (Four-Wheel Drive Low) setting. 4. Shift the transfer case to components could be damaged. N (Neutral). See “Shifting into The repairs would not be covered N (Neutral)” under Four-Wheel Drive 0 235. by the vehicle warranty. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 401 5. With the engine running, 10. Move the steering wheel to release the parking brake and Warning (Continued) make sure the steering column verify that the transfer case is is unlocked. in N (Neutral) by shifting the negative battery cable and cover the negative battery post and 11. If the vehicle has an ignition transmission to D (Drive) and key, keep it in the towed then to R (Reverse). There cable with a non-conductive material. If the battery is left vehicle in ACC/ACCESSORY should be no movement while to prevent the steering column shifting the transmission. connected or the battery cable contacts the post, the Electric from locking. If the vehicle is 6. Shift the transmission to D equipped with Keyless Access, Parking Brake may activate (Drive). keep the RKE transmitter during towing, which could cause outside of the vehicle and 7. If equipped with an ignition key, a crash. turn the ignition to ACC/ manually lock the doors. ACCESSORY. If equipped with Access the vehicle by using 8. Disconnect the negative (–) the key in the door lock. See Keyless Access, turn the 0 engine off. Disregard the Shift battery cable. See “Negative Door Locks 44. Battery Cable Disconnection to P (Park) DIC message. ” Disconnecting the Towed Vehicle See Ignition Positions (Key in Battery - North America 0 Access) 0 217 or Ignition 337. Before disconnecting from the tow vehicle: Positions (Keyless Access) 9. Shift the transmission to 0 219. P (Park). 1. Park on a level surface. Secure the vehicle with wheel blocks. { Warning Caution 2. Re-connect the negative (–) battery. See Battery - North To avoid death, serious injury, If the steering column is locked, America 0 337. or property damage, before vehicle damage may occur. dinghy towing the vehicle, always 3. Turn on the ignition with the disconnect and secure the engine off. For vehicles with a key, turn the ignition to ON/ (Continued) RUN with the engine off. If the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

402 Vehicle Care vehicle is equipped with starting the engine and shifting Dolly Towing Keyless Access, with your foot the transmission to D (Drive) off the brake pedal, press and and then to R (Reverse). There hold ENGINE START/STOP for should be movement of the five seconds until the green vehicle while shifting. light comes on in the button. 9. Shift the transmission to See Ignition Positions (Key 0 P (Park) and turn off the Access) 217 or Ignition ignition. Positions (Keyless Access) 0 219. 10. Release the parking brake and remove the wheel blocks. 4. Set the parking brake. See Electric Parking Brake 0 241. 11. Reset any lost presets. 5. Disconnect from the tow The outside temperature vehicle. display will default to 0 °C (32 °F) but will reset with 6. Shift the transmission to normal usage. N (Neutral). 7. Shift the transfer case to 2 m (Two-Wheel Drive High). When the shift to 2 m (Two-Wheel Drive High) is complete, the light in the instrument cluster will stop flashing and stay lit. See Four-Wheel-Drive Light 0 153. 8. Start the engine. Check that the vehicle is in 2 m (Two-Wheel Drive High) by GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 403

Caution Appearance Care Caution Do not tow this vehicle with two Exterior Care Do not use petroleum-based, wheels on the ground, or vehicle acidic, or abrasive cleaning damage could occur. This Locks agents as they can damage the damage would not be covered by Locks are lubricated at the factory. vehicle's paint, metal, or plastic the vehicle warranty. Use a de-icing agent only when parts. If damage occurs, it would absolutely necessary, and have the not be covered by the vehicle locks greased after using. See Dolly towing this vehicle is not warranty. Approved cleaning Recommended Fluids and allowed with either the front or the products can be obtained from Lubricants 0 425. rear tires on the ground for your dealer. Follow all two-wheel drive or four-wheel drive, Washing the Vehicle manufacturer directions regarding regardless of transfer case. correct product usage, necessary To preserve the vehicle's finish, safety precautions, and wash it often and out of direct appropriate disposal of any sunlight. vehicle care product. { Warning Do not power wash any part of Caution the vehicle’s interior, including the vinyl floor covering. This could Avoid using high-pressure damage safety and other systems washes closer than 30 cm (12 in) in the vehicle, which would not be to the surface of the vehicle. Use covered by the vehicle warranty. of power washers exceeding 8,274 kPa (1,200 psi) can result in damage or removal of paint and decals. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

404 Vehicle Care Dry the finish with a soft, clean Do not apply waxes or polishes to Caution chamois or an all-cotton towel to uncoated plastic, vinyl, rubber, avoid surface scratches and water decals, simulated wood, or flat paint Do not power wash any spotting. as damage can occur. component under the hood that Finish Care has this e symbol. Caution This could cause damage that Application of aftermarket clearcoat would not be covered by the sealant/wax materials is not Machine compounding or recommended. If painted surfaces vehicle warranty. aggressive polishing on a are damaged, see your dealer to basecoat/clearcoat paint finish have the damage assessed and may damage it. Use only If using an automatic car wash, repaired. Foreign materials such as non-abrasive waxes and polishes follow with the car wash calcium chloride and other salts, ice that are made for a basecoat/ instructions. The windshield wiper melting agents, road oil and tar, tree clearcoat paint finish on the and rear window wiper, if equipped, sap, bird droppings, chemicals from vehicle. must be turned off. Remove any industrial chimneys, etc., can accessories that may be damaged damage the vehicle's finish if they or interfere with the car wash remain on painted surfaces. Wash To keep the paint finish looking new, equipment. the vehicle as soon as possible. keep the vehicle garaged or covered whenever possible. See Power Assist Steps 0 52 for If necessary, use non-abrasive cleaning information. cleaners that are marked safe for painted surfaces to remove foreign Rinse the vehicle well, before matter. washing and after, to remove all cleaning agents completely. If they Occasional hand waxing or mild are allowed to dry on the surface, polishing should be done to remove they could stain. residue from the paint finish. See your dealer for approved cleaning products. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 405 Protecting Exterior Bright Metal . Do not use cleaners that are not Moldings intended for automotive use. Caution . Use a nonabrasive wax on the Using silicone-based products Caution vehicle after washing to protect may damage the bedliner, reduce and extend the molding finish. Failure to clean and protect the the slip-resistant texture, and bright metal moldings can result Spray-In Bedliner Care attract dirt. in a hazy white finish or pitting. A spray-in bedliner is a permanent This damage would not be coating that bonds to the truck bed Cleaning Exterior Lamps/ covered by the vehicle warranty. and cannot be removed. Promptly Lenses, Emblems, Decals and rinse the bedliner surface following Stripes The bright metal moldings on the a chemical spill to avoid permanent damage. Use only lukewarm or cold water, a vehicle are aluminum, chrome or soft cloth, and a car washing soap stainless steel. To prevent damage Spray-in bedliners can fade from to clean exterior lamps, lenses, always follow these cleaning oxidation, road dirt, heavy-duty emblems, decals and stripes. Follow instructions: hauling, and hard water stains. instructions under "Washing the . Be sure the molding is cool to Clean it periodically by washing off Vehicle" previously in this section. the loose dirt and using a mild the touch before applying any Lamp covers are made of plastic, cleaning solution. detergent. To restore the original appearance, apply the bedliner and some have a UV protective . Use only approved cleaning conditioner available through your coating. Do not clean or wipe them solutions for aluminum, chrome dealer. while they are dry. or stainless steel. Some Do not use any of the following on cleaners are highly acidic or lamp covers: contain alkaline substances and can damage the moldings. . Abrasive or caustic agents. . Always dilute a concentrated cleaner according to the manufacturer’s instructions. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

406 Vehicle Care . Washer fluids and other cleaning Replace the wiper blades if they are agents in higher concentrations Caution (Continued) worn or damaged. Damage can be than suggested by the caused by extreme dusty manufacturer. non-uniform finish. Clean low conditions, sand, salt, heat, sun, gloss stripes with soap and snow, and ice. . Solvents, alcohols, fuels, water only. or other harsh cleaners. Weatherstrips . Ice scrapers or other hard items. Air Intakes Apply weatherstrip lubricant on Aftermarket appearance caps or weatherstrips to make them last . Clear debris from the air intakes, covers while the lamps are longer, seal better, and not stick or between the hood and windshield, illuminated, due to excessive squeak. Lubricate weatherstrips when washing the vehicle. heat generated. once a year. Hot, dry climates may Windshield and Wiper Blades require more frequent application. Caution Black marks from rubber material on Clean the outside of the windshield painted surfaces can be removed by with glass cleaner. Failure to clean lamps properly rubbing with a clean cloth. See can cause damage to the lamp Clean rubber blades using a lint-free Recommended Fluids and 0 cover that would not be covered cloth or paper towel soaked with Lubricants 425. by the vehicle warranty. windshield washer fluid or a mild Tires detergent. Wash the windshield thoroughly when cleaning the Use a stiff brush with tire cleaner to blades. Bugs, road grime, sap, and clean the tires. Caution a buildup of vehicle wash/wax treatments may cause wiper Caution Using wax on low gloss black streaking. finish stripes can increase the Using petroleum-based tire gloss level and create a dressing products on the vehicle (Continued) may damage the paint finish and/ (Continued) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 407 Steering, Suspension, and Caution (Continued) Caution Chassis Components or tires. When applying a tire To avoid surface damage on Visually inspect steering, dressing, always wipe off any wheels and wheel trim, do not suspension, and chassis overspray from all painted use strong soaps, chemicals, components for damaged, loose, surfaces on the vehicle. abrasive polishes, cleaners, or missing parts or signs of wear at or brushes. Use only GM least once a year. Wheels and Wheel Trim approved cleaners. Do not drive Inspect power steering for proper the vehicle through an automatic attachment, connections, binding, Use a soft, clean cloth with mild car wash that uses silicone cracks, chafing, etc. soap and water to clean the wheels. carbide tire/wheel cleaning After rinsing thoroughly with clean Visually check constant velocity joint brushes. Damage could occur boots and axle seals for leaks. water, dry with a soft, clean towel. and the repairs would not be A wax may then be applied. covered by the vehicle warranty. Control arm ball joints on 1500 series vehicles are Caution maintenance-free. Brake System Chrome wheels and chrome Visually inspect brake lines and Caution wheel trim may be damaged if the hoses for proper hook-up, binding, vehicle is not washed after driving leaks, cracks, chafing, etc. Inspect Lubrication of applicable on roads that have been sprayed disc brake pads for wear and rotors suspension points should not be with magnesium chloride or for surface condition. Inspect drum done unless the temperature is calcium chloride. These are used brake linings/shoes for wear or −12 °C (10 °F) or higher, on roads for conditions such as cracks. Inspect all other brake parts. or damage could result. dust and ice. Always wash the chrome with soap and water after exposure. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

408 Vehicle Care Body Component Lubrication Sheet Metal Damage Interior Care Lubricate all key lock cylinders, If the vehicle is damaged and To prevent dirt particle abrasions, hood hinges, liftgate hinges, and the requires sheet metal repair or regularly clean the vehicle's interior. steel fuel door hinge unless the replacement, make sure the body Immediately remove any soils. components are plastic. Applying repair shop applies anti-corrosion Newspapers or dark garments can silicone grease on weatherstrips material to parts repaired or transfer color to the vehicle’s with a clean cloth will make them replaced to restore corrosion interior. last longer, seal better, and not stick protection. or squeak. Use a soft bristle brush to remove Original manufacturer replacement dust from knobs and crevices on the Underbody Maintenance parts will provide the corrosion instrument cluster. Using a mild protection while maintaining the soap solution, immediately remove At least twice a year, spring and fall, vehicle warranty. hand lotions, sunscreen, and insect use plain water to flush any repellent from all interior surfaces or corrosive materials from the Finish Damage permanent damage may result. underbody. Take care to thoroughly Quickly repair minor chips and Use cleaners specifically designed clean any areas where mud and scratches with touch-up materials for the surfaces being cleaned to other debris can collect. If equipped available from your dealer to avoid prevent permanent damage. Apply with power assist steps, extend corrosion. Larger areas of finish cleaners directly to the cleaning them and then use a high pressure damage can be corrected in your cloth. Do not spray cleaners on any wash to clean all joints and gaps. dealer's body and paint shop. switches or controls. Remove Do not directly power wash the cleaners quickly. transfer case and/or front/rear axle Chemical Paint Spotting output seals. High pressure water Airborne pollutants can fall upon Before using cleaners, read and can overcome the seals and and attack painted vehicle surfaces follow all safety instructions on the contaminate the fluid. Contaminated causing blotchy, ring-shaped label. While cleaning the interior, fluid will decrease the life of the discolorations, and small, irregular open the doors and windows to get transfer case and/or axles and dark spots etched into the paint proper ventilation. should be replaced. surface. Refer to “Finish Care” previously in this section. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 409 To prevent damage, do not clean Interior Glass Coated Moldings the interior using the following To clean, use a terry cloth fabric Coated moldings should be cleaned. cleaners or techniques: dampened with water. Wipe droplets . When lightly soiled, wipe with a . Never use a razor or any other left behind with a clean dry cloth. sponge or soft, lint-free cloth sharp object to remove soil from If necessary, use a commercial dampened with water. any interior surface. glass cleaner after cleaning with . When heavily soiled, use warm . Never use a brush with stiff plain water. soapy water. bristles. Caution . Never rub any surface Fabric/Carpet/Suede aggressively or with too much To prevent scratching, never use Start by vacuuming the surface pressure. abrasive cleaners on automotive using a soft brush attachment. If a . Do not use laundry detergents or glass. Abrasive cleaners or rotating vacuum brush attachment is dishwashing soaps with aggressive cleaning may damage being used, only use it on the floor degreasers. For liquid cleaners, the rear window defogger. carpet. Before cleaning, gently use approximately 20 drops per remove as much of the soil as 3.8 L (1 gal) of water. possible: Cleaning the windshield with water A concentrated soap solution will . Gently blot liquids with a paper create streaks and attract dirt. during the first three to six months of ownership will reduce tendency towel. Continue blotting until no Do not use solutions that contain more soil can be removed. strong or caustic soap. to fog. . For solid soils, remove as much . Do not heavily saturate the Speaker Covers as possible prior to vacuuming. upholstery when cleaning. Vacuum around a speaker cover To clean: . Do not use solvents or cleaners gently, so that the speaker will not containing solvents. be damaged. Clean spots with water 1. Saturate a clean, lint-free and mild soap. colorfast cloth with water. Microfiber cloth is recommended to prevent lint transfer to the fabric or carpet. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

410 Vehicle Care 2. Remove excess moisture by Cleaning High Gloss Surfaces Instrument Panel, Leather, gently wringing until water does and Vehicle Information and Vinyl, Other Plastic Surfaces, not drip from the cleaning cloth. Radio Displays Low Gloss Paint Surfaces and 3. Start on the outside edge of the Use a microfiber cloth on high gloss Natural Open Pore Wood soil and gently rub toward the surfaces or vehicle displays. First, Surfaces center. Fold the cleaning cloth use a soft bristle brush to remove Use a soft microfiber cloth to a clean area frequently to dirt that can scratch the surface. dampened with water to remove prevent forcing the soil in to the Then gently clean by rubbing with a dust and loose dirt. For a more fabric. microfiber cloth. Never use window thorough cleaning, use a soft 4. Continue gently rubbing the cleaners or solvents. Periodically microfiber cloth dampened with a soiled area until there is no hand wash the microfiber cloth mild soap solution. longer any color transfer from separately, using mild soap. Do not the soil to the cleaning cloth. use bleach or fabric softener. Rinse Caution thoroughly and air dry before 5. If the soil is not completely next use. removed, use a mild soap Soaking or saturating leather, solution followed only by plain especially perforated leather, as water. Caution well as other interior surfaces, may cause permanent damage. If the soil is not completely Do not attach a device with a Wipe excess moisture from these removed, it may be necessary to suction cup to the display. This surfaces after cleaning and allow use a commercial upholstery may cause damage and would cleaner or spot lifter. Test a small them to dry naturally. Never use not be covered by the vehicle heat, steam, or spot removers. Do hidden area for colorfastness before warranty. using a commercial upholstery not use cleaners that contain cleaner or spot lifter. If ring silicone or wax-based products. formation occurs, clean the entire Cleaners containing these fabric or carpet. solvents can permanently change After cleaning use a paper towel to (Continued) blot excess moisture. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Vehicle Care 411 Care of Seat Belts Caution (Continued) Warning (Continued) Keep belts clean and dry. the appearance and feel of and injury. Make sure the floor leather or soft trim, and are not { Warning mat does not interfere with the recommended. pedals. Do not bleach or dye seat belt webbing. It may severely weaken Do not use cleaners that increase Use the following guidelines for the webbing. In a crash, they gloss, especially on the instrument proper floor mat usage: panel. Reflected glare can decrease might not be able to provide adequate protection. Clean and . The original equipment floor visibility through the windshield mats were designed for your under certain conditions. rinse seat belt webbing only with mild soap and lukewarm water. vehicle. If the floor mats need Allow the webbing to dry. replacing, it is recommended Caution that GM certified floor mats be purchased. Non-GM floor mats Use of air fresheners may cause Floor Mats may not fit properly and may permanent damage to plastics interfere with the pedals. Always and painted surfaces. If an air { Warning check that the floor mats do not freshener comes in contact with interfere with the pedals. any plastic or painted surface in If a floor mat is the wrong size or . Do not use a floor mat if the the vehicle, blot immediately and is not properly installed, it can vehicle is not equipped with a clean with a soft cloth dampened interfere with the pedals. floor mat retainer on the driver with a mild soap solution. Interference with the pedals can side floor. Damage caused by air fresheners cause unintended acceleration . Use the floor mat with the would not be covered by the and/or increased stopping vehicle warranty. correct side up. Do not turn distance which can cause a crash it over. (Continued) . Do not place anything on top of the driver side floor mat. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

412 Vehicle Care . Use only a single floor mat on Verify the floor mat does not the driver side. interfere with the pedals. . Do not place one floor mat on top of another. Removing and Replacing the Floor Mats Pull up on the rear of the driver side floor mat to unlock each retainer and remove.

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. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Service and Maintenance 413 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 ...... 413 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 ...... 415 the required maintenance for the blades. Special Application Services vehicle. Follow this schedule to help Special Application protect against major repair Caution Services ...... 421 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 ...... 422 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 ...... 425 replacement parts. They have Maintenance Replacement up-to-date tools and equipment for Do not have chemical flushes that Parts ...... 427 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 ...... 428 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-1500-11698638) - 2019 - crc - 5/15/18

414 Service and Maintenance . 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. be dangerous and can cause repairs that are not covered by See Recommended Fuel serious injury. Perform 0 the vehicle warranty. (Except 6.2L V8 Engine) 271 maintenance work only if the or Recommended Fuel (6.2L required information, proper tools, V8 Engine) 0 271. The Tire Rotation and Required and equipment are available. Services are the responsibility of the Refer to the information in the If they are not, see your dealer to vehicle owner. It is recommended to Maintenance Schedule Additional have a trained technician do the have your dealer perform these Required Services - Normal chart. work. See Doing Your Own services every 12 000 km/7,500 mi. The Additional Required Services - Service Work 0 314. Proper vehicle maintenance helps to Severe are for vehicles that are: keep the vehicle in good working . Mainly driven in heavy city traffic condition, improves fuel economy, in hot weather and reduces vehicle emissions. . Mainly driven in hilly or Because of the way people use mountainous terrain vehicles, maintenance needs vary. There may need to be more . Frequently towing a trailer frequent checks and services. The . Used for high speed or Additional Required Services - competitive driving Normal are for vehicles that: . Used for taxi, police, or delivery . Carry passengers and cargo service within recommended limits on the Tire and Loading Information Refer to the information in the label. See Vehicle Load Limits Maintenance Schedule Additional 0 209. Required Services - Severe chart. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Service and Maintenance 415 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 Extended Idle Use At Each Fuel Stop accidentally, service the vehicle When the vehicle is used in a way within 5 000 km/3,000 mi since the that requires extended idle time, . Check the engine oil level. See last service. Reset the oil life 0 one hour of use shall be deemed Engine Oil 321. system when the oil is changed. the same as 53 km (33 mi). 0 Once a Month See Engine Oil Life System 323. See Driver Information Center (DIC) (Midlevel and Uplevel) 0 160 or . Check the tire inflation Passenger Compartment Air Driver Information Center (DIC) pressures, including the spare. Filter (Base Level) 0 159 for hourmeter. See Tire Pressure 0 367. The passenger compartment air . Inspect the tires for wear. See filter removes dust, pollen, and Air Conditioning Desiccant Tire Inspection 0 375. other airborne irritants from outside (Replace Every Seven Years) . Check the windshield washer air that is pulled into the vehicle. The air conditioning system requires fluid level. See Washer Fluid The filter should be replaced as part maintenance every seven years. 0 334. of routine scheduled maintenance. This service requires replacement of Inspect the passenger compartment the desiccant to help the longevity Engine Oil Change air filter every 36 000 km/ and efficient operation of the air When the CHANGE ENGINE OIL 22,500 miles or two years, conditioning system. This service SOON message displays, have the whichever comes first. Replace if can be complex. See your dealer. engine oil and filter changed within necessary. More frequent the next 1 000 km/600 mi. If driven replacement may be needed if the under the best conditions, the vehicle is driven in areas with heavy engine oil life system may not traffic, areas with poor air quality, indicate the need for vehicle service or areas with high dust levels. for up to a year. The engine oil and GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

416 Service and Maintenance Tire Rotation and Required . Inspect brake system. See . Check restraint system Services Every 12 000 km/ Exterior Care 0 403. components. See Safety System 0 7,500 mi . Visually inspect steering, Check 84. Rotate the tires, if recommended for suspension, and chassis . Visually inspect fuel system for the vehicle, and perform the components for damage, damage or leaks. following services. See Tire including cracks or tears in the . Visually inspect exhaust system Rotation 0 376. rubber boots, loose or missing and nearby heat shields for parts, or signs of wear at least loose or damaged parts. . Check engine oil level and oil once a year. See Exterior Care life percentage. If needed, 0 403. Lubricate the suspension . Lubricate body components. See change engine oil and filter, and and steering components at Exterior Care 0 403. reset oil life system. least every other oil change. 0 . Check starter switch. See Starter See Engine Oil 321 and (If equipped with grease fittings) 0 Engine Oil Life System 0 323. Switch Check 343. . Inspect power steering for Check ignition transmission lock. . Check engine coolant level. See . proper attachment, connections, See Ignition Transmission Lock Cooling System 0 327. binding, leaks, cracks, Check 0 343. . Check windshield washer fluid chafing, etc. level. See Washer Fluid 0 334. . Check parking brake and . Visually inspect drive shafts for automatic transmission park . Check tire inflation pressures, excessive wear, lubricant leaks mechanism. See Park Brake and including the spare. See Tire or damage including: tube dents, P (Park) Mechanism Check Pressure 0 367. cracks, constant velocity joint or 0 343. universal joint looseness, . Inspect tire wear. See Tire . Check accelerator pedal for 0 cracked or missing boots, loose Inspection 375. or missing boot clamps, center damage, high effort, or binding. . Visually check for fluid leaks. bearing excessive looseness, Replace if needed. . Inspect engine air cleaner filter. missing or loose fasteners. . Visually inspect gas strut for See Engine Air Cleaner/Filter signs of wear, cracks, or other 0 326. damage. Check the hold open GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Service and Maintenance 417 ability of the strut. If the hold open is low, service the gas strut. See Gas Strut(s) 0 345. . Inspect sunroof track and seal, if equipped. See Sunroof 0 65. . Verify spare tire key lock operation and lubricate as needed. See Tire Changing 0 385. . Verify the spare tire is tightly stowed under the vehicle. Tighten as needed. See "Storing a Flat or Spare Tire and Tools" in Tire Changing 0 385. . Visually inspect the spare tire to ensure that it is tightly stowed under the vehicle. Push, pull, and try to turn the tire. If the spare tire moves, tighten as necessary. Verify that the wheel retainer plate compression spring is fully compressed. SeeTire Changing 0 385. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

418 Service and Maintenance Additional Required Services

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) @ @ @ @ @ @ Replace engine air cleaner filter. (2) @ @ @ Inspect evaporative control system. (3) @ @ @ Replace spark plugs. Inspect spark plug wires. @ (Except 2.7L L4 Turbo Engine) Replace spark plugs. Inspect spark plug wires. @ @ (2.7L L4 Turbo Engine Only) 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)

Replace windshield wiper blades. (8) @@ @ @ @@ @@ @@

Replace hood and/or body lift support gas struts. @ @ GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Service and Maintenance 419 Footnotes — Maintenance contaminate the fluid. Contaminated Schedule Additional Required fluid will decrease the life of the Services - Normal transfer case and/or drive axles and (1) Or every two years, whichever should be replaced. comes first. More frequent (5) Or every five years, whichever replacement may be needed if the comes first. See Cooling System vehicle is driven in areas with heavy 0 327. traffic, poor air quality, areas with (6) Or every 10 years, whichever high dust levels or are sensitive to comes first. Inspect for fraying, environmental allergens. Filter excessive cracking, or damage; replacement may also be needed if replace, if needed. you notice reduced airflow, windows fogging up, or odors. Your local GM (7) Replace brake fluid every five Service location can help you years. See Brake Fluid 0 336. determine when it is the right time to (8) Or every 12 months, whichever replace your filter. comes first. See Wiper Blade (2) Or every four years, whichever Replacement 0 344. comes first. If driving in dusty conditions, inspect the filter at each oil change or more often as needed. (3) Visually check all fuel and vapor lines and hoses for proper attachment, connection, routing, and condition. (4) Do not directly power wash the transfer case and/or front/rear axle output seals. High pressure water can overcome the seals and GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

420 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) @ @ @ @ @ @ Replace engine air cleaner filter. (2) @ @ @ Inspect evaporative control system. (3) @ @ @ Replace spark plugs. Inspect spark plug wires. @ (Except 2.7L L4 Turbo Engine) Replace spark plugs. Inspect spark plug wires. @ @ (2.7L L4 Turbo Engine Only) Change automatic transmission fluid and filter. @ @ @ 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)

Replace windshield wiper blades. (8) @@ @ @ @@ @@ @@

Replace hood and/or body lift support gas struts. @ @ GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Service and Maintenance 421 Footnotes — Maintenance contaminate the fluid. Contaminated Special Application Schedule Additional Required fluid will decrease the life of the Services - Severe transfer case and/or drive axles and Services should be replaced. (1) Or every two years, whichever . Severe Commercial Use comes first. More frequent (5) Or every five years, whichever Vehicles Only: Lubricate chassis replacement may be needed if the comes first. See Cooling System components every oil change. vehicle is driven in areas with heavy 0 327. . Have underbody flushing service traffic, poor air quality, areas with (6) Or every 10 years, whichever performed. See "Underbody high dust levels or are sensitive to comes first. Inspect for fraying, Maintenance" in Exterior Care environmental allergens. Filter excessive cracking, or damage; 0 403. replacement may also be needed if replace, if needed. you notice reduced airflow, windows fogging up, or odors. Your local GM (7) Replace brake fluid every five Service location can help you years. See Brake Fluid 0 336. determine when it is the right time to (8) Or every 12 months, whichever replace your filter. comes first. See Wiper Blade (2) Or every four years, whichever Replacement 0 344. comes first. If driving in dusty conditions, inspect the filter at each oil change or more often as needed. (3) Visually check all fuel and vapor lines and hoses for proper attachment, connection, routing, and condition. (4) Do not directly power wash the transfer case and/or front/rear axle output seals. High pressure water can overcome the seals and GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

422 Service and Maintenance Additional . To avoid break-down or failure to . Trained dealer technicians have start the vehicle, maintain a access to tools and equipment Maintenance and Care battery with full cranking power. to inspect the brakes and recommend quality parts Your vehicle is an important . Trained dealer technicians have engineered for the vehicle. investment and caring for it properly the diagnostic equipment to test may help to avoid future costly the battery and ensure that the Fluids repairs. To maintain vehicle connections and cables are Proper fluid levels and approved performance, additional corrosion-free. fluids protect the vehicle s systems maintenance services may be ’ Belts and components. See required. . Belts may need replacing if they Recommended Fluids and It is recommended that your dealer 0 squeak or show signs of Lubricants 425 for GM approved perform these services their — cracking or splitting. fluids. trained dealer technicians know . Engine oil and windshield your vehicle best. Your dealer can . Trained dealer technicians have washer fluid levels should be also perform a thorough access to tools and equipment checked at every fuel fill. assessment with a multi-point to inspect the belts and inspection to recommend when your recommend adjustment or . Instrument cluster lights may vehicle may need attention. replacement when necessary. come on to indicate that fluids may be low and need to be The following list is intended to Brakes filled. explain the services and conditions Brakes stop the vehicle and are to look for that may indicate crucial to safe driving. Hoses services are required. . Signs of brake wear may include Hoses transport fluids and should Battery chirping, grinding, or squealing be regularly inspected to ensure that there are no cracks or leaks. The 12-volt battery supplies power noises, or difficulty stopping. With a multi-point inspection, your to start the engine and operate any dealer can inspect the hoses and additional electrical accessories. advise if replacement is needed. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Service and Maintenance 423 Lamps of leaking, blown seals, Vehicle Care Properly working headlamps, or damage, and can advise To help keep the vehicle looking like taillamps, and brake lamps are when service is needed. new, vehicle care products are important to see and be seen on Tires available from your dealer. For the road. information on how to clean and Tires need to be properly inflated, protect the vehicle’s interior and . Signs that the headlamps need rotated, and balanced. Maintaining 0 attention include dimming, failure exterior, see Interior Care 408 and the tires can save money and fuel, Exterior Care 0 403. to light, cracking, or damage. and can reduce the risk of tire The brake lamps need to be failure. Wheel Alignment checked periodically to ensure that they light when braking. . Signs that the tires need to be Wheel alignment is critical for replaced include three or more ensuring that the tires deliver . With a multi-point inspection, visible treadwear indicators; cord optimal wear and performance. your dealer can check the lamps or fabric showing through the and note any concerns. . Signs that the alignment may rubber; cracks or cuts in the need to be adjusted include Shocks and Struts tread or sidewall; or a bulge or pulling, improper vehicle split in the tire. Shocks and struts help aid in control handling, or unusual tire wear. for a smoother ride. . Trained dealer technicians can . Your dealer has the required inspect and recommend the right . Signs of wear may include equipment to ensure proper tires. Your dealer can also wheel alignment. steering wheel vibration, bounce/ provide tire/wheel balancing sway while braking, longer services to ensure smooth Windshield stopping distance, or uneven vehicle operation at all speeds. tire wear. For safety, appearance, and the Your dealer sells and services best viewing, keep the windshield . As part of the multi-point name brand tires. clean and clear. inspection, trained dealer technicians can visually inspect . Signs of damage include the shocks and struts for signs scratches, cracks, and chips. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

424 Service and Maintenance . Trained dealer technicians can inspect the windshield and recommend proper replacement if needed. Wiper Blades Wiper blades need to be cleaned and kept in good condition to provide a clear view. . Signs of wear include streaking, skipping across the windshield, and worn or split rubber. . Trained dealer technicians can check the wiper blades and replace them when needed. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Service and Maintenance 425 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, 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. Transmission) Automatic Transmission (10-Speed DEXRON ULV Automatic Transmission Fluid (GM Part No. 19352619, in Transmission) Canada 19352620). 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 0 327. Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. See Engine Oil 0 321. Front and Rear Axle Driveshaft Spline Lubricant, Special Lubricant (GM Part No. 19257121, in Splines Canada 19257122). GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

426 Service and Maintenance

Usage Fluid/Lubricant Front Axle (Four-Wheel Drive) and See your dealer. Rear Axle Hydraulic Brake System DOT 4 Hydraulic Brake Fluid (GM Part No. 19299570, in Canada 19299571). 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 Transfer Case (Four-Wheel Drive) DEXRON-VI Automatic Transmission Fluid. Weatherstrip Conditioning Weatherstrip Lubricant (GM Part No. 3634770, in Canada 10953518) or equivalent. 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-1500-11698638) - 2019 - crc - 5/15/18

Service and Maintenance 427 Maintenance Replacement Parts Replacement parts identified below by name, part number, or specification can be obtained from your dealer. If the vehicle has a diesel engine, see the Duramax diesel supplement. Part GM Part Number ACDelco Part Number Engine Air Cleaner/Filter With high capacity air cleaner 84121219 A3244C Without high capacity air cleaner 84121217 A3246C Oil Filter 2.7L L4 55495105 PF66 4.3L V6 19330000 PF63E 5.3L V8; 6.2L V8 19330000 PF63E Passenger Compartment Air Filter 13508023 CF185 Spark Plugs 2.7L L4 12688094 41-106-IP 4.3L V6 12622441 41-114 5.3L V8; 6.2L V8 12622441 41-114 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-1500-11698638) - 2019 - crc - 5/15/18

428 Service and Maintenance 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-1500-11698638) - 2019 - crc - 5/15/18

Technical Data 429 Vehicle Identification parts. See “Engine Specifications” Technical Data under Capacities and Specifications 0 Vehicle Identification 430 for the vehicle's engine code. Vehicle Identification Number (VIN) Vehicle Identification Service Parts Number (VIN) ...... 429 Identification Label Service Parts Identification There may be a label on the inside Label ...... 429 of the glove box that contains the Vehicle Data following information: Capacities and . Vehicle Identification Specifications ...... 430 Number (VIN) Engine Drive Belt Routing . . . . 432 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-1500-11698638) - 2019 - crc - 5/15/18

430 Technical Data Vehicle Data Capacities and Specifications The following approximate capacities are given in metric and English conversions. See Recommended Fluids and Lubricants 0 425. 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 2.7L L4 1500 Series 11.8 L 12.5 qt 4.3L V6 1500 Series 11.6 L 12.3 qt 5.3L V8 1500 Series (L82) 12.4 L 13.1 qt 5.3L V8 1500 Series (L84) 12.6 L 13.3 qt 6.2L V8 1500 Series 13.1 L 13.8 qt Engine Oil with Filter 2.7L L4 1500 Series 5.7 L 6.0 qt 4.3L V6 1500 Series 5.7 L 6.0 qt GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Technical Data 431

Capacities Application Metric English 5.3L V8; 6.2L V8 1500 Series 7.6 L 8.0 qt Fuel Tank 1500 Series Standard and Short Box (Gas & 4WD Diesel) 90.9 L 24.0 gal 1500 Series Standard and Short Box (2WD Diesel) 83.3 L 22.0 gal 1500 Series Long Box 106.0 L 28.0 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.

Engine Specifications Engine VIN Code Spark Plug Gap 2.7L L4 (L3B) K 0.65–0.75 mm (0.026–0.030 in) 4.3L V6 (LV3) H 0.95–1.10 mm (0.037–0.043 in) 5.3L V8 (L82) F 0.95–1.10 mm (0.037–0.043 in) 5.3L V8 (L84) D 0.95–1.10 mm (0.037–0.043 in) 6.2L V8 (L87) L 0.95–1.10 mm (0.037–0.043 in) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

432 Technical Data Engine Drive Belt Routing If the vehicle has a diesel engine, see the Duramax diesel supplement.

4.3L, 5.3L, and 6.2L Engines

2.7L Engine GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Customer Information 433 Reporting Safety Defects Customer Information Customer Reporting Safety Defects to Information the United States Government ...... 443 Customer Satisfaction Reporting Safety Defects to Procedure Customer Information the Canadian Your satisfaction and goodwill are Customer Satisfaction Government ...... 444 important to your dealer and to Procedure ...... 433 Reporting Safety Defects to GMC. Normally, any concerns with General Motors ...... 444 Customer Assistance the sales transaction or the Offices ...... 435 Vehicle Data Recording and operation of the vehicle will be Customer Assistance for Text resolved by your dealer's sales or Telephone (TTY) Users . . . . . 436 Privacy Vehicle Data Recording and service departments. Sometimes, Online Owner Center ...... 436 however, despite the best intentions GM Mobility Reimbursement Privacy ...... 445 Event Data Recorders ...... 445 of all concerned, misunderstandings Program ...... 437 can occur. If your concern has not Roadside Assistance OnStar ...... 446 Infotainment System ...... 446 been resolved to your satisfaction, Program ...... 437 the following steps should be taken: Scheduling Service Appointments ...... 439 STEP ONE : Discuss your concern Courtesy Transportation with a member of dealership Program ...... 439 management. Normally, concerns Collision Damage Repair . . . . . 440 can be quickly resolved at that level. Publication Ordering If the matter has already been Information ...... 442 reviewed with the sales, service, Radio Frequency or parts manager, contact the owner Statement ...... 443 of your dealership or the general manager. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

434 Customer Information STEP TWO : If after contacting a When contacting GMC, remember decision given in your case, you member of dealership management, that your concern will likely be may reject it and proceed with any it appears your concern cannot be resolved at a dealer's facility. That is other venue for relief available resolved by your dealership without why we suggest following Step One to you. further help, in the U.S., call first. You may contact the BBB Auto Line 1-800-462-8782. In Canada, call STEP THREE — U.S. Owners : Program using the toll-free General Motors of Canada Both General Motors and your telephone number or write them at Customer Care Centre at dealer are committed to making the following address: 1-800-263-3777 (English), sure you are completely satisfied or 1-800-263-7854 (French). BBB Auto Line Program with your new vehicle. However, Council of Better Business Bureaus, We encourage you to call the if you continue to remain unsatisfied Inc. toll-free number in order to give your after following the procedure 3033 Wilson Blvd. inquiry prompt attention. Have the outlined in Steps One and Two, you Suite 600 following information available to can file with the Better Business Arlington, VA 22201 give the Customer Assistance Bureau (BBB) Auto Line Program to representative: enforce your rights. Telephone: 1-800-955-5100 http://www.bbb.org/council/ . Vehicle Identification The BBB Auto Line Program is an programs-services/ Number (VIN). This is available out-of-court program administered dispute-handling-and-resolution/ from the vehicle registration or by the Council of Better Business bbb-auto-line title, or the plate at the top left of Bureaus to settle automotive the instrument panel and visible disputes regarding vehicle repairs or This program is available in all through the windshield. the interpretation of the New Vehicle 50 states and the District of Columbia. Eligibility is limited by . Dealership name and location. Limited Warranty. Although you may be required to resort to this informal vehicle age, mileage, and other . Vehicle delivery date and dispute resolution program prior to factors. General Motors reserves present mileage. filing a court action, use of the the right to change eligibility program is free of charge and your limitations and/or discontinue its case will generally be heard within participation in this program. 40 days. If you do not agree with the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Customer Information 435 STEP THREE — Canadian call toll-free 1-800-207-0685, or call www.gmc.com Owners : In the event that you do the General Motors Customer Care 1-800-GMC-8782 (1-800-462-8782) not feel your concerns have been Centre, 1-800-263-3777 (English), 1-888-889-2438 (For Text addressed after following the 1-800-263-7854 (French), Telephone devices (TTYs)) procedure outlined in Steps One or write to: Roadside Assistance: and Two, General Motors of Canada Mediation/Arbitration Program 1-888-881-3302 Company wants you to be aware of c/o Customer Care Centre From U.S. Virgin Islands: its participation in a no-charge General Motors of Canada Mediation/Arbitration Program. Company 1-800-496-9994 General Motors of Canada Mail Code: CA1-163-005 Canada Company has committed to binding 1908 Colonel Sam Drive arbitration of owner disputes Oshawa, Ontario L1H 8P7 General Motors of Canada involving factory-related vehicle Company Your inquiry should be accompanied service claims. The program Customer Care Centre, Mail Code: by the Vehicle Identification provides for the review of the facts CA1-163-005 Number (VIN). involved by an impartial third party 1908 Colonel Sam Drive arbiter, and may include an informal Oshawa, Ontario L1H 8P7 hearing before the arbiter. The Customer Assistance www.gmc.ca program is designed so that the Offices entire dispute settlement process, 1-800-263-3777 (English) from the time you file your complaint GMC encourages customers to call 1-800-263-7854 (French) to the final decision, should be the toll-free number for assistance. 1-800-263-3830 (For Text completed in about 70 days. We However, if a customer wishes to Telephone Devices (TTYs)) believe our impartial program offers write or e-mail GMC, the letter Roadside Assistance: advantages over courts in most should be addressed to: 1-800-268-6800 jurisdictions because it is informal, United States and Puerto Rico Overseas quick, and free of charge. GMC Customer Assistance Center Please contact the local General For further information concerning P.O. Box 33172 Motors Business Unit. eligibility in the Canadian Motor Detroit, MI 48232-5172 Vehicle Arbitration Plan (CAMVAP), GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

436 Customer Information Customer Assistance for G : View maintenance schedules, GMC Centre (Canada) Text Telephone (TTY) alerts, and Vehicle Diagnostic www.gmcowner.ca Information. Schedule service Take a trip to the GMC Centre: Users appointments. To assist customers who are deaf, I . Chat live with online help : View and print dealer-recorded representatives. hard of hearing, or speech-impaired service records and self-recorded and who use Text Telephones service records. . Use the Vehicle Tools section. (TTYs), GMC has TTY equipment . Access third party enthusiast available at its Customer Assistance D : Select a dealer and view sites and social media networks. Center. Any TTY user in the U.S. locations, maps, phone numbers, can communicate with GMC by and hours. . Locate resources such as dialing: 1-888-889-2438. TTY users r : Track your vehicle’s warranty lease-end, financing, and in Canada can dial 1-800-263-3830. information. warranty information. J : View active recalls by Vehicle . Retrieve your favorite articles, Online Owner Center Identification Number (VIN). See quizzes, tips, and multimedia Online Owner Experience Vehicle Identification Number (VIN) galleries organized into the 0 Features and Auto Care (U.S.) my.gmc.com 429. H Sections. The GMC online owner experience : View GM Card, SiriusXM . Download the owner’s manual is a one-stop resource that allows Satellite radio (if equipped), and OnStar account information (if for your vehicle, quickly and interaction with GMC and keeps easily. important vehicle-specific equipped). information in one place. F : Chat live with online help . Find the GMC-recommended representatives. maintenance services for your Membership Benefits vehicle. E See my.gmc.com to register your : Download owner’s manuals vehicle. and view vehicle-specific how-to videos. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Customer Information 437 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-1500-11698638) - 2019 - crc - 5/15/18

438 Customer Information . Lock-Out Service: Service to event, incidental expenses may Services Specific to unlock the vehicle if you are be reimbursed within the Canadian-Purchased Vehicles locked out. A remote unlock may Powertrain warranty period. be available if you have OnStar. Items considered are reasonable . Fuel Delivery: Reimbursement For security reasons, the driver and customary hotel, meals, is up to 7 L. Diesel fuel delivery must present identification rental car, or a vehicle being may be restricted. Propane and before this service is given. delivered back to the customer, other fuels are not provided through this service. . Emergency Tow from a Public up to 500 miles. Road or Highway: Tow to the . Lock-Out Service: Vehicle Services Not Included in registration is required. nearest GMC dealer for warranty Roadside Assistance service, or if the vehicle was in a . Trip Interruption Benefits and crash and cannot be driven. . Impound towing caused by Assistance: Must be over Assistance is not given when the violation of any laws 150 km from where your trip was vehicle is stuck in the sand, . Legal fines started to qualify. mud, or snow. Pre-authorization, original . Mounting, dismounting, . Flat Tire Change: Service to detailed receipts, and a copy of or changing of snow tires, the repair orders are required. change a flat tire with the spare chains, or other traction devices tire. The spare tire, if equipped, Once authorization has been must be in good condition and Service is not provided if a vehicle received, the Roadside properly inflated. It is the owner's is in an area that is not accessible Assistance advisor will help to responsibility for the repair or to the service vehicle or is not a make arrangements and explain replacement of the tire if it is not regularly traveled or maintained how to receive payment. covered by the warranty. public road, which includes ice and . Alternative Service: If winter roads. Off-road use is not assistance cannot be provided . Battery Jump Start: Service to covered. jump start a dead battery. right away, the Roadside Assistance advisor may give . Trip Interruption Benefits and permission to get local Assistance: If your trip is emergency road service. You will interrupted due to a warranty receive payment, up to $100, GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Customer Information 439 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-1500-11698638) - 2019 - crc - 5/15/18

440 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-1500-11698638) - 2019 - crc - 5/15/18

Customer Information 441 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 0 437. 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-1500-11698638) - 2019 - crc - 5/15/18

442 Customer Information . Vehicle make, model, and original GM parts. Remember, Publication Ordering model year recycled parts will not be covered by 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 engine, transmission, axle, . General description of the initially value the repair using suspension, brakes, electrical damage to the other vehicle aftermarket parts. Discuss this with system, steering system, body, etc. Choose a reputable repair facility the repair professional, and insist on that uses quality replacement parts. Genuine GM parts. Remember, Customer Literature if the vehicle is leased, you may be See “Collision Parts” earlier in this Owner’s manuals are written section. obligated to have the vehicle specifically for owners and are repaired with Genuine GM parts, If the airbag has inflated, see What intended to provide basic even if your insurance coverage operational information about the Will You See after an Airbag does not pay the full cost. Inflates? 0 91. vehicle. The owner’s manual If another party's insurance includes the Maintenance Schedule Managing the Vehicle Damage company is paying for the repairs, for all models. Repair Process you are not obligated to accept a Customer literature publications repair valuation based on that In the event that the vehicle requires available for purchase include insurance company's collision policy damage repairs, GM recommends owner’s manuals, warranty repair limits, as you have no that you take an active role in its manuals, infotainment manuals, and contractual limits with that company. repair. If you have a pre-determined portfolios. Portfolios include an In such cases, you can have control repair facility of choice, take the owner’s manual, warranty manual, of the repair and parts choices as vehicle there, or have it towed there. infotainment manual, if applicable, long as the cost stays within Specify to the facility that any and zip lock bag or pouch. 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-1500-11698638) - 2019 - crc - 5/15/18

Customer Information 443 Current and Past Models Development (ISED) Canada's Reporting Safety RSP-100 / license-exempt RSS's / Service manuals and customer ICES-001. Defects literature are available for many current and past model year GM Operation is subject to the following vehicles. two conditions: Reporting Safety Defects To order, call 1-800-551-4123 1. The device may not cause to the United States Monday–Friday, 8:00 a.m.–6:00 p.m. harmful interference. Government eastern time 2. The device must accept any If you believe that your vehicle For credit card orders only (VISA, interference received, including has a defect which could cause MasterCard, or Discover), see interference that may cause a crash or could cause injury or Helm, Inc. at: www.helminc.com. undesired operation of the death, you should immediately device. To order by mail, write to: inform the National Highway Changes or modifications to any of Helm, Incorporated Traffic Safety Administration these systems by other than an Attention: Customer Service (NHTSA) in addition to notifying authorized service facility could void 47911 Halyard Drive General Motors. authorization to use this equipment. Plymouth, MI 48170 If NHTSA receives similar Make checks payable in U.S. funds. complaints, it may open an investigation, and if it finds that Radio Frequency a safety defect exists in a group Statement of vehicles, it may order a recall and remedy campaign. This vehicle has systems that operate on a radio frequency that However, NHTSA cannot complies with Part 15/Part 18 of the become involved in individual Federal Communications problems between you, your Commission (FCC) rules and with dealer, or General Motors. Innovation, Science and Economic GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

444 Customer Information To contact NHTSA, you may call www.tc.gc.ca/rappels (French) General Motors of Canada the Vehicle Safety Hotline or write to: Company toll-free at 1-888-327-4236 (TTY: Customer Care Centre, Mail Code: 1-800-424-9153); go to http:// Transport Canada CA1-163-005 www.safercar.gov; or write to: Motor Vehicle Safety Directorate 1908 Colonel Sam Drive Defect Investigations and Oshawa, Ontario L1H 8P7 Administrator, NHTSA Recalls Division In Mexico, call 01-800-466-0812 or 1200 New Jersey Avenue, S.E. 80 Noel Street 01-800-466-0801. Washington, D.C. 20590 Gatineau, QC J8Z 0A1 In other Central America and You can also obtain other Caribbean Countries, call information about motor vehicle Reporting Safety Defects 52-722-236-0680. safety from http:// to General Motors www.safercar.gov. In addition to notifying NHTSA (or Transport Canada) in a situation like Reporting Safety Defects this, notify General Motors. to the Canadian In the U.S., call 1-800-GMC-8782 Government (1-800-462-8782), or write: If you live in Canada, and you GMC Customer Assistance Center believe that the vehicle has a P.O. Box 33172 safety defect, notify Transport Detroit, MI 48232-5172 Canada immediately, and notify In Canada, call 1-800-263-3777 General Motors of Canada (English) or 1-800-263-7854 Company. Call Transport (French), or write: Canada at 1-800-333-0510; go to: www.tc.gc.ca/recalls (English) GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Customer Information 445 Vehicle Data Event Data Recorders These data can help provide a better understanding of the Recording and This vehicle is equipped with an circumstances in which crashes and (EDR). The injuries occur. Privacy main purpose of an EDR is to Note The vehicle has a number of record, in certain crash or near EDR data are recorded by your computers that record information crash-like situations, such as an air vehicle only if a non-trivial crash about the vehicle’s performance and bag deployment or hitting a road how it is driven. For example, the obstacle, data that will assist in situation occurs; no data are recorded by the EDR under normal vehicle uses computer modules to understanding how a vehicle’s driving conditions and no personal monitor and control engine and systems performed. The EDR is data (e.g., name, gender, age, and transmission performance, to designed to record data related to monitor the conditions for airbag vehicle dynamics and safety crash location) are recorded. However, other parties, such as law deployment and deploy them in a systems for a short period of time, enforcement, could combine the crash, and, if equipped, to provide typically 30 seconds or less. The EDR data with the type of antilock braking to help the driver EDR in this vehicle is designed to control the vehicle. These modules record such data as: personally identifying data routinely acquired during a crash may store data to help the dealer . How various systems in your investigation. technician service the vehicle. vehicle were operating; Some modules may also store data To read data recorded by an EDR, about how the vehicle is operated, . Whether or not the driver and special equipment is required, and such as rate of fuel consumption or passenger safety belts were access to the vehicle or the EDR is average speed. These modules may buckled/fastened; needed. In addition to the vehicle retain personal preferences, such as . How far (if at all) the driver was manufacturer, other parties, such as radio presets, seat positions, and depressing the accelerator and/ law enforcement, that have the temperature settings. or brake pedal; and, special equipment, can read the information if they have access to . How fast the vehicle was traveling. the vehicle or the EDR. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

446 Customer Information GM will not access these data or OnStar Terms and Conditions and share it with others except: with the Privacy Statement on the OnStar consent of the vehicle owner or, website. if the vehicle is leased, with the See OnStar Additional Information consent of the lessee; in response 0 449. to an official request by police or similar government office; as part of GM's defense of litigation through Infotainment System the discovery process; or, as If the vehicle is equipped with a required by law. Data that GM navigation system as part of the collects or receives may also be infotainment system, use of the used for GM research needs or may system may result in the storage of be made available to others for destinations, addresses, telephone research purposes, where a need is numbers, and other trip information. shown and the data is not tied to a See the infotainment manual for specific vehicle or vehicle owner. information on stored data and for deletion instructions. OnStar If the vehicle is equipped with OnStar and has an active service plan, additional data may be collected through the OnStar system. This includes information about the vehicle’s operation; collisions involving the vehicle; the use of the vehicle and its features; 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-1500-11698638) - 2019 - crc - 5/15/18

OnStar 447 OnStar Overview Terms, Privacy Statement, and OnStar Software Terms for more details including system limitations at OnStar Overview www..com (U.S.) or www.onstar.ca (Canada). OnStar Overview ...... 447 The OnStar system status light is OnStar Services next to the OnStar buttons. If the Emergency ...... 448 status light is: Security ...... 449 = Voice Command Button . Solid Green: System is ready. OnStar Additional Information . Flashing Green: On a call. OnStar Additional Q Blue OnStar Button Information ...... 449 > Red Emergency Button . Red: Indicates a problem. This vehicle may be equipped with a . Off: System is off. Press Q comprehensive, in-vehicle system twice to speak with an OnStar that can connect to an OnStar Advisor. Advisor for Emergency, Security, Navigation, Connections, and Press Q or call 1-888-4ONSTAR Diagnostics Services. OnStar (1-888-466-7827) to speak to an services may require a paid service Advisor. plan and data plan. OnStar requires Functionality of the Voice Command the vehicle battery and electrical button may vary by vehicle and system, cellular service, and GPS region. satellite signals to be available and operating. OnStar acts as a link to existing emergency service providers. OnStar may collect information about you and your vehicle, including location information. See OnStar User GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

448 OnStar Press = to: . Manage Wi-Fi Settings, OnStar Services if equipped. . Open the OnStar app on the infotainment display. See the Press > to get a priority connection Emergency infotainment manual for to an OnStar Advisor available Emergency Services require an information on how to use the 24/7 to: active safety and security plan. With OnStar app. . Get help for an emergency. Automatic Crash Response, built-in Or . Be a Good Samaritan or sensors can automatically alert a . Make a call, end a call, respond to an AMBER Alert. specially trained OnStar Advisor or answer an incoming call. who is immediately connected in to . Get assistance in severe the vehicle to help. . Give OnStar Hands-Free Calling weather or other crisis situations voice commands. and find evacuation routes. Press > for a priority connection to an OnStar Advisor who can contact . Give OnStar Turn-by-Turn emergency service providers, direct Navigation voice commands. them to your exact location, and . Obtain and customize the Wi-Fi relay important information. hotspot name or SSID and With OnStar Crisis Assist, specially password, if equipped. trained Advisors are available Press Q to connect to an 24 hours a day, 7 days a week, to Advisor to: provide a central point of contact, assistance, and information during a . Verify account information or crisis. update contact information. With Roadside Assistance, Advisors . Get driving directions. can locate a nearby service provider . Receive a Diagnostic check of to help with a flat tire, a battery the vehicle's key operating jump, or an empty gas tank. systems. . Receive Roadside Assistance. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

OnStar 449 Security OnStar Additional Reactivation for Subsequent Owners If equipped, OnStar provides these Information services: Press Q and follow the prompts to In- Messages . With Stolen Vehicle Assistance, speak to an Advisor as soon as OnStar Advisors can use GPS to Audio messages may play important possible. The Advisor will update pinpoint the vehicle and help information at the following times: vehicle records and explain OnStar or connected service options. authorities quickly recover it. . Prior to vehicle purchase. Press . With Remote Ignition Block, Q to set up an account. How OnStar Service Works if equipped, OnStar can block . After change in ownership and Automatic Crash Response, the engine from being restarted. at 90 days. Emergency Services, Crisis Assist, . With Stolen Vehicle Slowdown, Stolen Vehicle Assistance, Remote if equipped, OnStar can work Transferring Service Services, Roadside Assistance, and with law enforcement to Press Q to request account transfer Hands-Free Calling are available on gradually slow the vehicle down. eligibility information. The Advisor most vehicles. Not all OnStar services are available everywhere Theft Alarm Notification can cancel or change account information. or on all vehicles. For more If equipped, if the doors are locked information, a full description of and the vehicle alarm sounds, a Selling/Transferring the OnStar services, system limitations, notification by text, e-mail, or phone Vehicle and OnStar User Terms, Privacy call will be sent. If the vehicle is Statement, and Software Terms: Call 1-888-4ONSTAR stolen, an OnStar Advisor can work (1-888-466-7827) immediately to . Call 1-888-4ONSTAR with authorities to recover the terminate your OnStar or connected (1-888-466-7827). vehicle. services if the vehicle is disposed . See www.onstar.com (U.S.). of, sold, transferred, or if the lease ends. . See www.onstar.ca (Canada). . Call TTY 1-877-248-2080. GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

450 OnStar . Press Q to speak with an to the vehicle in a crash, or wireless access to all OnStar services, Advisor. phone network congestion or except Virtual Advisor and OnStar jamming — may prevent service. Turn-by-Turn Navigation. OnStar or connected services cannot work unless the vehicle is in See Radio Frequency Statement If equipped, TTY mode can be 0 a place where OnStar has an 443. turned on or off by touching agreement with a wireless service Settings, then Apps, and then Services for People with Phone. When TTY mode is on, provider for service in that area. The Disabilities wireless service provider must also phone calls can be made or have coverage, network capacity, Advisors provide services to help received with OnStar using the reception, and technology with physical disabilities and infotainment display. compatible with OnStar or medical conditions. OnStar Personal Identification connected services. Service Q Number (PIN) involving location information about Press to help: the vehicle cannot work unless GPS . Locate a gas station with an A PIN is needed to access some signals are available, unobstructed, attendant to pump gas. OnStar services. The PIN will need and compatible with the OnStar to be changed the first time when . Find a hotel, restaurant, etc., hardware. OnStar or connected speaking with an Advisor. To that meets accessibility needs. services may not work if the OnStar change the OnStar PIN, contact an equipment is not properly installed . Provide directions to the closest OnStar Advisor by pressing Q or or it has not been properly hospital or pharmacy in urgent calling 1-888-4ONSTAR. maintained. If equipment or software situations. is added, connected, or modified, Warranty TTY Users OnStar or connected services may OnStar equipment may be not work. Other problems beyond OnStar has the ability to warranted as part of the vehicle the control of OnStar — such as communicate to deaf, warranty. hills, tall buildings, tunnels, weather, hard-of-hearing, or speech-impaired electrical system design and customers while in the vehicle. The architecture of the vehicle, damage available dealer-installed TTY system can provide in-vehicle GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

OnStar 451 Languages call OnStar. However, OnStar may come on. Press Q to try the could have difficulty identifying The vehicle can be programmed to call again or try again after driving a the exact location. respond in multiple languages. few miles into another cellular area. Press Q and ask for an Advisor. . In emergency situations, OnStar Vehicle and Power Issues Advisors are available in English, can use the last stored GPS Spanish, and French. Available location to send to emergency OnStar services require a vehicle languages may vary by country. responders. electrical system, wireless service, and GPS satellite technologies to be A temporary loss of GPS can cause available and operating for features Potential Issues loss of the ability to send a to function properly. These systems OnStar cannot perform Remote Turn-by-Turn Navigation route. The may not operate if the battery is Door Unlock or Stolen Vehicle Advisor may give a verbal route or discharged or disconnected. Assistance after the vehicle has may ask for a call back after the been off continuously for 10 days vehicle is driven into an open area. Add-on Electrical Equipment without an ignition cycle. If the vehicle has not been started for Cellular and GPS Antennas The OnStar system is integrated into the electrical architecture of the 10 days, OnStar can contact Cellular reception is required for vehicle. Do not add any electrical Roadside Assistance or a locksmith OnStar to send remote signals to equipment. See Add-On Electrical to help gain access to the vehicle. the vehicle. Do not place items over Equipment 0 306. Added electrical or near the antenna to prevent equipment may interfere with the Global Positioning blocking cellular and GPS signal operation of the OnStar system and System (GPS) reception. cause it to not operate. . Obstruction of the GPS can Unable to Connect to OnStar occur in a large city with tall Vehicle Software Updates buildings; in parking garages; Message OnStar or GM may remotely deliver around airports; in tunnels and If there is limited cellular coverage software updates or changes to the underpasses; or in an area with or the cellular network has reached vehicle without further notice or very dense trees. If GPS signals maximum capacity, this message consent. These updates or changes are not available, the OnStar may enhance or maintain safety, system should still operate to GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

452 OnStar security, or the operation of the Privacy libcurl: vehicle or the vehicle systems. The complete OnStar Privacy COPYRIGHT AND PERMISSION Software updates or changes may Statement may be found at NOTICE affect or erase data or settings that www.onstar.com (U.S.), are stored in the vehicle, such as Copyright (c) 1996 - 2010, Daniel or www.onstar.ca (Canada). We OnStar Hands-Free Calling name Stenberg, . recommend that you review it. If you tags, saved navigation destinations, have any questions, call All rights reserved. or pre-set radio stations. Neither 1-888-4ONSTAR (1-888-466-7827) OnStar nor GM is responsible for Permission to use, copy, modify, any affected or erased data or or press Q to speak with an and distribute this software for any settings. These updates or changes Advisor. Users of wireless purpose with or without fee is may also collect personal communications are cautioned that hereby granted, provided that the information. Such collection is the privacy of any information sent above copyright notice and this described in the OnStar privacy via wireless cellular communications permission notice appear in all statement or separately disclosed at cannot be assured. Third parties copies. the time of installation. These may unlawfully intercept or access THE SOFTWARE IS PROVIDED updates or changes may also cause transmissions and private “AS IS,” WITHOUT WARRANTY OF a system to automatically communications without consent. ANY KIND, EXPRESS OR communicate with GM servers to OnStar - Software IMPLIED, INCLUDING BUT NOT collect information about vehicle Acknowledgements LIMITED TO THE WARRANTIES system status, identify whether OF MERCHANTABILITY, FITNESS updates or changes are available, Certain OnStar components include FOR A PARTICULAR PURPOSE or deliver updates or changes. An libcurl and unzip software and other AND NONINFRINGEMENT OF active OnStar agreement constitutes third party software. Below are the THIRD PARTY RIGHTS. IN NO consent to these software updates notices and licenses associated with EVENT SHALL THE AUTHORS OR or changes and agreement that libcurl and unzip and for other third COPYRIGHT HOLDERS BE either OnStar or GM may remotely party software please see http:// LIABLE FOR ANY CLAIM, deliver them to the vehicle. opensource.lge.com/index DAMAGES OR OTHER LIABILITY, www.onstar.com/us/en/ WHETHER IN AN ACTION OF CONTRACT, TORT OR GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

OnStar 453 OTHERWISE, ARISING FROM, Gordon, Ian Gorman, Chris 1. Redistributions of source code OUT OF OR IN CONNECTION Herborth, Dirk Haase, Greg Hartwig, must retain the above copyright WITH THE SOFTWARE OR THE Robert Heath, Jonathan Hudson, notice, definition, disclaimer, USE OR OTHER DEALINGS IN Paul Kienitz, David Kirschbaum, and this list of conditions. THE SOFTWARE. Johnny Lee, Onno der Linden, 2. Redistributions in binary form Except as contained in this notice, Igor Mandrichenko, Steve P. Miller, (compiled executables) must the name of a copyright holder shall Sergio Monesi, Keith Owens, reproduce the above copyright not be used in advertising or George Petrov, Greg Roelofs, Kai notice, definition, disclaimer, otherwise to promote the sale, use Uwe Rommel, Steve Salisbury, and this list of conditions in or other dealings in this Software Dave Smith, Steven M. Schweda, documentation and/or other without prior written authorization of Christian Spieler, Cosmin Truta, materials provided with the the copyright holder. Antoine Verheijen, Paul von Behren, distribution. The sole exception Rich Wales, Mike White. to this condition is redistribution unzip: This software is provided “as is,” of a standard UnZipSFX binary This is version 2005-Feb-10 of the without warranty of any kind, (including SFXWiz) as part of a Info-ZIP copyright and license. The express or implied. In no event shall self-extracting archive; that is definitive version of this document Info-ZIP or its contributors be held permitted without inclusion of should be available at ftp:// liable for any direct, indirect, this license, as long as the ftp.info-zip.org/pub/infozip/ incidental, special or consequential normal SFX banner has not license.html indefinitely. damages arising out of the use of or been removed from the binary Copyright (c) 1990-2005 Info-ZIP. All inability to use this software. or disabled. rights reserved. Permission is granted to anyone to 3. Altered versions–including, but For the purposes of this copyright use this software for any purpose, not limited to, ports to new including commercial applications, operating systems, existing and license, “Info-ZIP” is defined as the following set of individuals: and to alter it and redistribute it ports with new graphical freely, subject to the following interfaces, and dynamic, Mark Adler, John Bush, Karl Davis, restrictions: shared, or static library Harald Denker, Jean-Michel Dubois, versions–must be plainly Jean-loup Gailly, Hunter Goatley, Ed marked as such and must not GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

454 OnStar be misrepresented as being the original source. Such altered versions also must not be misrepresented as being Info-ZIP releases–including, but not limited to, labeling of the altered versions with the names “Info-ZIP” (or any variation thereof, including, but not limited to, different capitalizations), “Pocket UnZip,”“WiZ” or “MacZip” without the explicit permission of Info-ZIP. Such altered versions are further prohibited from misrepresentative use of 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-1500-11698638) - 2019 - crc - 5/15/18

Connected Services 455 Connected Connected Services OnStar app on the infotainment display. For other vehicles press = Services Navigation as follows. Navigation requires a specific Cancel Route Connected Services OnStar or connected service plan. 1. Press =. System responds: Navigation ...... 455 Press Q to receive Turn-by-Turn “OnStar ready,” then a tone. Connections ...... 456 Diagnostics ...... 458 directions or have them sent to the 2. Say “Cancel route.” System vehicle’s navigation screen, responds: “Do you want to if equipped. cancel directions?” Turn-by-Turn Navigation 3. Say “Yes.” System responds: “OK, request completed, thank 1. Press Q to connect to an you, goodbye.” Advisor. Route Preview 2. Request directions to be downloaded to the vehicle. 1. Press =. System responds: 3. Follow the voice-guided “OnStar ready,” then a tone. commands. 2. Say “Route preview.” System responds with the next three Using Voice Commands maneuvers. During a Planned Route Repeat Functionality of the Voice Command button, if equipped, may vary by 1. Press =. System responds: vehicle and region. For some “OnStar ready,” then a tone. vehicles, press = to open the GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

456 Connected Services 2. Say “Repeat.” System See www.onstar.com (U.S.) or Wi-Fi Hotspot (If Equipped) responds with the last direction www.onstar.ca (Canada). The vehicle may have a built-in given, then responds with Wi-Fi hotspot that provides access “OnStar ready,” then a tone. Connections to the Internet and web content at Get My Destination The following services help with 4G LTE speed. Up to seven mobile staying connected. devices can be connected. A data 1. Press =. System responds: plan is required. Use the in-vehicle “OnStar ready,” then a tone. For coverage maps, see controls only when it is safe to www.onstar.com (U.S.) or do so. 2. Say “Get my destination.” www.onstar.ca (Canada). System responds with the 1. To retrieve Wi-Fi hotspot address and distance to the Ensuring Security information, press = to open destination, then responds with . Change the default passwords the OnStar app on the “OnStar ready,” then a tone. for the Wi-Fi hotspot and infotainment display, then Send Destination to Vehicle myGMC mobile application. select Wi-Fi Hotspot. On some Make these passwords different vehicles, touch Wi-Fi or Wi-Fi Directions can be sent to the from each other and use a Settings on the screen. vehicle’s navigation screen, combination of letters, numbers, 2. The Wi-Fi settings will display if equipped. and symbols to increase the the Wi-Fi hotspot name (SSID), security. Press Q, then ask the Advisor to password, and on some download directions to the vehicle’s . Change the default name of the vehicles, the connection type navigation system, if equipped. After SSID (Service Set Identifier). (no Internet connection, 3G, the call ends, the navigation screen This is your network’s name that 4G, 4G LTE), and signal quality will provide prompts to begin driving is visible to other wireless (poor, good, excellent). directions. Routes that are sent to devices. Choose a unique name 3. To change the SSID or the navigation screen can only be and avoid family names or canceled through the navigation vehicle descriptions. password, press Q or call system. 1-888-4ONSTAR to connect with an Advisor. On some GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

Connected Services 457 vehicles, the SSID and . Check the vehicle’s fuel level, oil power locks are required. Data rates password can be changed in life, or tire pressure, apply. See www.onstar.com for the Wi-Fi Hotspot menu. if factory-equipped with the Tire details and system limitations. Pressure Monitor System. After initial set-up, your vehicle’s Remote Services Wi-Fi hotspot will connect . Send destinations to the vehicle. automatically to your mobile Contact an OnStar Advisor to . Locate the vehicle on a map unlock the doors or sound the horn devices. Manage data usage by (U.S. market only). turning Wi-Fi on or off on your and flash the lamps. mobile device, using the myGMC . Turn the vehicle's Wi-Fi hotspot Marketplace mobile app, or by contacting an on/off, manage settings, and OnStar Advisor. On some vehicles, monitor data consumption, OnStar Advisors can provide offers Wi-Fi can also be managed from the if equipped. from restaurants and retailers on your route, help locate hotels, Wi-Fi Hotspot menu. . Locate a dealer and schedule or book a room. These services service. MyGMC Mobile App (If Available) vary by market. . Request roadside assistance. Download the myGMC mobile app OnStar Hands-Free Calling to compatible Apple and Android . Set a parking reminder with pin smartphones. GMC users can drop, take a photo, make a note, Make and receive calls with the access the following services from a and set a timer. built-in wireless calling service, smartphone: which requires available minutes. . Connect with GMC on social Functionality of the Voice Command . Remotely start/stop the vehicle, media. button may vary by vehicle and if factory-equipped. Features are subject to change. For region. For some vehicles, press = . Lock/unlock doors, if equipped myGMC mobile app information and to open the OnStar app on the with automatic locks. compatibility, see my.gmc.com. infotainment display, then select . Activate the horn and lamps. An active OnStar or connected Hands-Free calling. For other service plan may be required. vehicles press = as follows. A compatible device, factory-installed remote start, and GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-1500-11698638) - 2019 - crc - 5/15/18

458 Connected Services Make a Call 2. Say “My number.” System updates on feature capabilities, see responds: “Your OnStar my.gmc.com. Message and data 1. Press =. System responds: Hands-Free Calling number is,” rates may apply. “OnStar ready.” then says the number. 2. Say “Call.” System responds: End a Call “Call. Please say the name or number to call.” Press =. System responds: “Call 3. Say the entire number without ended.” pausing, including a “1” and the Verify Minutes and Expiration area code. System responds: “OK, calling.” Press = and say “Minutes” then Calling 911 Emergency “Verify” to check how many minutes remain and their expiration date. 1. Press =. System responds: If equipped, press = and touch OnStar ready. “ ” Account Services to view the 2. Say “Call.” System responds: number of remaining minutes, “Call. Please say the name or available Wi-Fi data, and other number to call.” account information. 3. Say “911” without pausing. System responds: “911.” Diagnostics 4. Say “Call.” System responds: By monitoring and reporting on the “OK, dialing 911.” vehicle's key systems, OnStar Advanced Diagnostics, if equipped, Retrieve My Number provides a way to keep up on 1. Press =. System responds: maintenance. Capabilities vary by model. See www.onstar.com for OnStar ready. “ ” details and system limitations. Features are subject to change. For GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/- Mexico-1500-11698638) - 2019 - crc - 5/16/18

Index 459 Index A Airbag System (cont'd) Accessories and What Will You See after an Modifications ...... 313 Airbag Inflates? ...... 91 Accessory Power ...... 225 When Should an Airbag Active Fuel Management ...... 227 Inflate? ...... 89 Add-On Electrical Equipment . . . 306 Where Are the Airbags? ...... 88 Adding a Snow Plow or Airbags Similar Equipment ...... 307 Adding Equipment to the Additional Information Vehicle ...... 97 OnStar ...... 449 Passenger Status Indicator . . . 148 Additional Maintenance Readiness Light ...... 147 and Care ...... 422 Servicing Airbag-Equipped Adjustments Vehicles ...... 96 Lumbar, Front Seats ...... 71 System Check ...... 86 Air Cleaner/Filter, Engine ...... 326 Alarm Air Conditioning ...... 188, 190 Vehicle Security ...... 54 Air Filter Alert Life System ...... 325 Lane Change ...... 267 Air Filter, Passenger Side Blind Zone (SBZA) ...... 267 Compartment ...... 194 All-Season Tires ...... 359 Air Vents ...... 194 All-Terrain Tires ...... 360 Airbag System Antilock Brake System (ABS) . . . 240 Check ...... 98 Warning Light ...... 152 How Does an Airbag Appearance Care Restrain? ...... 90 Exterior ...... 403 Passenger Sensing System . . . .92 Interior ...... 408 What Makes an Airbag Assistance Program, Inflate? ...... 90 Roadside ...... 437 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/- Mexico-1500-11698638) - 2019 - crc - 5/16/18

460 Index Assistance Systems for Brake Buying New Tires ...... 378 Driving ...... 260 Parking, Electric ...... 241 C Assistance Systems for System Warning Light ...... 151 Calibration ...... 132 Parking and Backing ...... 254 Brake Pad Life System ...... 335 California Auto Stop Brakes ...... 335 Perchlorate Materials Stop/Start System ...... 222 Antilock ...... 240 Requirements ...... 313 Automatic Assist ...... 242 California Dimming Mirrors ...... 58 Fluid ...... 336 Proposition Door Locks ...... 46 Pad Life System ...... 335 65 Warning ...... 313,337, 395, Forward Braking ...... 263 Braking ...... 198 Back Cover Headlamp System ...... 179 Automatic Forward ...... 263 Canadian Vehicle Owners ...... 2 Transmission ...... 229 Braking System Capacities and Transmission Fluid ...... 325 Front Pedestrian (FPB) ...... 264 Specifications ...... 430 Automatic Transmission Break-In, New Vehicle ...... 216 Carbon Monoxide Manual Mode ...... 232 Bulb Replacement Engine Exhaust ...... 228 Axle, Front ...... 340 Center High-Mounted Tailgate ...... 47 Axle, Rear ...... 341 Stoplamp (CHMSL) and Winter Driving ...... 206 Cargo Lamp ...... 348 B Cargo Halogen Bulbs ...... 346 Battery Tie-Downs ...... 127 Headlamp Aiming ...... 346 Exterior Lighting Battery Caution, Danger, and Warning . . . . 2 Headlamps ...... 346 Saver ...... 185 Center Console Storage ...... 126 Headlamps, Front Turn Load Management ...... 185 Center High-Mounted Signal, Sidemarker, and Power Protection ...... 185 Stoplamp (CHMSL) and Parking Lamps ...... 347 Battery - North America . . . .337, 395 Cargo Lamp ...... 348 License Plate Lamps ...... 349 Blade Replacement, Wiper . . . . . 344 Center Seat ...... 70 Taillamps, Turn Signal, Blind Spot Mirrors ...... 58 Chains, Tire ...... 382 Stoplamps, and Back-up Lamps ...... 347 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/- Mexico-1500-11698638) - 2019 - crc - 5/16/18

Index 461 Charging Connected Services Customer Assistance (cont'd) Wireless ...... 135 Connections ...... 456 Text Telephone (TTY) Charging System Light ...... 148 Diagnostics ...... 458 Users ...... 436 Check Navigation ...... 455 Customer Information Engine Light (Malfunction Connections Publications Ordering Indicator) ...... 149 Connected Services ...... 456 Information ...... 442 Ignition Transmission Lock . . . 343 Control Customer Satisfaction Child Restraints Hill Descent ...... 245 Procedure ...... 433 Infants and Young Children . . . 100 Traction and Electronic D Lower Anchors and Tethers Stability ...... 243 Damage Repair, Collision ...... 440 for Children ...... 106 Control Light Danger, Warning, and Caution . . . . 2 Older Children ...... 99 Hill Descent ...... 153 Data Collection Securing ...... 117, 120, 121 Control of a Vehicle ...... 198 Infotainment System ...... 446 Systems ...... 103 Convex Mirrors ...... 56 OnStar ...... 446 Circuit Breakers ...... 350 Coolant Data Recorders, Event ...... 445 Cleaning Engine Temperature Gauge . . 145 Daytime Running Exterior Care ...... 403 Engine Temperature Lamps (DRL) ...... 179 Interior Care ...... 408 Warning Light ...... 155 Defensive Driving ...... 198 Climate Control Systems ...... 188 Cooling ...... 188, 190 Delayed Locking ...... 45 Air Conditioning ...... 188 Cooling System ...... 327 Diagnostics Dual Automatic ...... 190 Courtesy Transportation Connected Services ...... 458 Heating ...... 188 Program ...... 439 Differential, Limited-Slip ...... 250 Clock ...... 132 Cruise Control ...... 250 Distracted Driving ...... 197 Cluster, Instrument ...... 138 Light ...... 158 Dome Lamps ...... 183 Collision Damage Repair ...... 440 Cupholders ...... 125 Door Compartments Customer Assistance ...... 436 Ajar Light ...... 158 Storage ...... 125 Offices ...... 435 Delayed Locking ...... 45 Compass ...... 132 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/- Mexico-1500-11698638) - 2019 - crc - 5/16/18

462 Index Door (cont'd) E Engine (cont'd) Locks ...... 44 E85 or FlexFuel ...... 272 Exhaust ...... 228 Power Locks ...... 45 Electric Parking Brake ...... 241 Fan ...... 333 Drive Belt Routing, Engine ...... 432 Electric Parking Brake Light . . . . 152 Heater ...... 223 Driver Assistance Systems . . . . . 253 Electrical Equipment, Oil Life System ...... 323 Driver Information Add-On ...... 306 Oil Pressure Gauge ...... 144 Center (DIC) ...... 159, 160 Electrical System Oil Pressure Light ...... 157 Driver Mode Control ...... 246 Engine Compartment Fuse Overheated Protection Driver Mode Control Light ...... 156 Block ...... 350 Operating Mode ...... 333 Driving Fuses and Circuit Breakers . . . 350 Overheating ...... 331 Assistance Systems ...... 260 Instrument Panel Fuse Power Messages ...... 167 Characteristics and Block ...... 354, 356 Running While Parked ...... 229 Towing Tips ...... 276 Overload ...... 349 Starting ...... 221 Defensive ...... 198 Electronic Stability Control Engine Air Filter Life System . . . . 325 Drunk ...... 198 (ESC) Off Light ...... 155 Entry Lighting ...... 184 For Better Fuel Economy ...... 29 Emergency Equipment, Towing ...... 285 Hill and Mountain Roads ...... 206 OnStar ...... 448 Event Data Recorders ...... 445 If the Vehicle is Stuck ...... 208 Engine Exit Lighting ...... 184 Loss of Control ...... 200 Air Cleaner/Filter ...... 326 Extended Parking ...... 228 Off-Road ...... 200 Check Light (Malfunction Extender, Seat Belt ...... 84 Off-Road Recovery ...... 199 Indicator) ...... 149 Exterior Cargo Lamps ...... 182 Vehicle Load Limits ...... 209 Compartment Overview ...... 316 Exterior Lamp Controls ...... 176 Wet Roads ...... 205 Coolant Temperature Exterior Lamps Off Reminder . . . 178 Winter ...... 206 Gauge ...... 145 Exterior Lighting Battery Dual Automatic Climate Coolant Temperature Saver ...... 185 Control System ...... 190 Warning Light ...... 155 Cooling System ...... 327 Drive Belt Routing ...... 432 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/- Mexico-1500-11698638) - 2019 - crc - 5/16/18

Index 463 F Frequency Statement Fuses (cont'd) Fan Radio ...... 443 Instrument Panel Fuse Engine ...... 333 Front Axle ...... 340 Block ...... 354, 356 Features Front Fog Lamp G Light ...... 158 Memory ...... 12 Garage Door Opener ...... 172 Front Pedestrian Braking Filter, Programming ...... 172 (FPB) System ...... 264 Engine Air Cleaner ...... 326 Gas Strut(s) ...... 345 Front Seats Flash-to-Pass ...... 179 Gauges Adjustment ...... 69 Flashers, Hazard Warning ...... 180 Engine Coolant Heated and Ventilated ...... 75 Flat Tire ...... 383 Temperature ...... 145 Fuel Changing ...... 385 Engine Oil Pressure ...... 144 Additives ...... 272 FlexFuel Fuel ...... 143 Economy Driving ...... 29 E85 ...... 272 Odometer ...... 142 Filling a Portable Fuel Floor Console Storage ...... 127 Speedometer ...... 142 Container ...... 275 Floor Mats ...... 411 Tachometer ...... 143 Filling the Tank ...... 273 Fluid Trip Odometer ...... 142 Foreign Countries ...... 272 Automatic Transmission ...... 325 Voltmeter ...... 146 Gauge ...... 143 Brakes ...... 336 Warning Lights and Low Fuel Warning Light ...... 157 Four-Wheel Drive Indicators ...... 137 Management, Active ...... 227 Transfer Case ...... 235 General Information Prohibited Fuels ...... 272 Washer ...... 334 Service and Maintenance . . . . . 413 Recommended ...... 271 Fog Lamps ...... 181 Towing ...... 276 Top Tier ...... 271 Folding Mirrors ...... 57 Vehicle Care ...... 312 Full-Size Spare Tire ...... 394 Forward Automatic Braking . . . . . 263 Glove Box ...... 125 Fuses Forward Collision Alert GM Mobility Reimbursement Engine Compartment Fuse (FCA) System ...... 260 Program ...... 437 Four-Wheel Drive ...... 235, 340 Block ...... 350 Four-Wheel-Drive Light ...... 153 Fuses and Circuit Breakers . . . 350 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/- Mexico-1500-11698638) - 2019 - crc - 5/16/18

464 Index H High-Speed Operation ...... 368 J Halogen Bulbs ...... 346 Hill and Mountain Roads ...... 206 Jump Starting - North Hazard Warning Flashers ...... 180 Hill Descent Control (HDC) . . . . . 245 America ...... 395 Hill Descent Control Light ...... 153 Head Restraints ...... 68 K Head-up Display ...... 163 Hill Start Assist (HSA) ...... 242 Keyless Entry Headlamps Hood ...... 314 Remote (RKE) System . . . . . 33, 41 Aiming ...... 346 Horn ...... 131 Keys ...... 30 Automatic ...... 179 How to Wear Seat Belts Bulb Replacement ...... 346 Properly ...... 80 L Daytime Running HVAC ...... 188, 190 Labeling, Tire Sidewall ...... 360 Lamps Lamps (DRL) ...... 179 I Daytime Running (DRL) ...... 179 Flash-to-Pass ...... 179 Ignition Positions ...... 217, 219 Dome ...... 183 Headlamps, Front Turn Ignition Transmission Lock Exterior Cargo ...... 182 Signal, Sidemarker, and Check ...... 343 Exterior Controls ...... 176 Parking Lamps ...... 347 Immobilizer ...... 55 Exterior Lamps Off High-Beam On Light ...... 157 Indicator Reminder ...... 178 High/Low Beam Changer . . . . . 178 Pedestrian Ahead ...... 154 Exterior Lighting Battery Lamps On Reminder ...... 158 Vehicle Ahead ...... 154 Saver ...... 185 Heated Infants and Young Children, License Plate ...... 349 Rear Seats ...... 78 Restraints ...... 100 Malfunction Indicator Steering Wheel ...... 131 Information (Check Engine) ...... 149 Heated and Ventilated Front Publication Ordering ...... 442 On Reminder ...... 158 Seats ...... 75 Infotainment ...... 187 Reading ...... 184 Heated Mirrors ...... 58 Infotainment System ...... 446 Lane Change Alert (LCA) ...... 267 Heater Instrument Cluster ...... 138 Lane Departure Engine ...... 223 Interior Rearview Mirrors ...... 60 Warning (LDW) ...... 269 Heating ...... 188, 190 Introduction ...... 2 High-Beam On Light ...... 157 Lane Keep Assist (LKA) ...... 269 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/- Mexico-1500-11698638) - 2019 - crc - 5/16/18

Index 465 Lane Keep Assist Light ...... 153 Lights (cont'd) Loss of Control ...... 200 Lap-Shoulder Belt ...... 82 Engine Coolant Low Fuel Warning Light ...... 157 LATCH System Temperature Warning ...... 155 Low-Profile Tires ...... 360 Replacing Parts after a Engine Oil Pressure ...... 157 Lower Anchors and Tethers Crash ...... 117 Flash-to-Pass ...... 179 for Children (LATCH LATCH, Lower Anchors and Four-Wheel-Drive ...... 153 System) ...... 106 Tethers for Children ...... 106 Front Fog Lamp ...... 158 Lumbar Adjustment ...... 71 LED Lighting ...... 347 High-Beam On ...... 157 Front Seats ...... 71 High/Low Beam Changer . . . . . 178 Lighting M Entry ...... 184 Hill Descent Control ...... 153 Maintenance Exit ...... 184 Lane Keep Assist ...... 153 Records ...... 428 Illumination Control ...... 183 Low Fuel Warning ...... 157 Maintenance and Care LED ...... 347 Seat Belt Reminders ...... 146 Additional ...... 422 Task ...... 182 Security ...... 157 Maintenance Schedule ...... 415 Lights Service Electric Parking Recommended Fluids and Airbag Readiness ...... 147 Brake ...... 152 Lubricants ...... 425 Antilock Brake System Tire Pressure ...... 156 Transfer Case ...... 235 (ABS) Warning ...... 152 Tow/Haul Mode ...... 153 Malfunction Indicator Lamp . . . . . 149 Brake System Warning ...... 151 Traction Off ...... 154 Manual Mirrors ...... 56 Charging System ...... 148 Limited-Slip Differential ...... 250 Manual Mode ...... 232 Check Engine (Malfunction Locking Rear Axle ...... 250 Manual Windows ...... 63 Indicator) ...... 149 Locks Memory Features ...... 12 Cruise Control ...... 158 Automatic Door ...... 46 Memory Seats ...... 73 Door Ajar ...... 158 Delayed Locking ...... 45 Messages Driver Mode Control ...... 156 Door ...... 44 Engine Power ...... 167 Electric Parking Brake ...... 152 Lockout Protection ...... 46 Vehicle ...... 166 Electronic Stability Control Power Door ...... 45 Vehicle Speed ...... 167 (ESC), Off ...... 155 Safety ...... 46 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/- Mexico-1500-11698638) - 2019 - crc - 5/16/18

466 Index Mirror O Overheating, Engine ...... 331 Rear Camera ...... 60 Odometer ...... 142 P Mirrors Trip ...... 142 Park Automatic Dimming ...... 58 Off-Road ...... 200 Shifting Into ...... 225 Automatic Dimming Driving ...... 200 Shifting Out of ...... 227 Rearview ...... 60 Recovery ...... 199 Park Assist ...... 254 Blind Spot ...... 58 Oil Parking Convex ...... 56 Engine ...... 321 Brake and P (Park) Folding ...... 57 Engine Oil Life System ...... 323 Mechanism Check ...... 343 Heated ...... 58 Engine Oil Pressure Gauge . . . 144 Extended ...... 228 Manual ...... 56 Pressure Light ...... 157 Over Things That Burn ...... 227 Manual Rearview ...... 60 Older Children, Restraints ...... 99 Parking or Backing Power ...... 56 Online Owner Center ...... 436 Assistance Systems ...... 254 Tilt in Reverse ...... 59 OnStar ...... 446 Passenger Airbag Status Mirrors, Interior Rearview ...... 60 OnStar Additional Indicator ...... 148 Mode ...... 246 Information ...... 449 Passenger Compartment Air Driver Control ...... 246 OnStar Emergency ...... 448 Filter ...... 194 Monitor System, Tire OnStar Overview ...... 447 Passenger Sensing System . . . . . 92 Pressure ...... 369 OnStar Security ...... 449 Pedestrian Ahead Indicator . . . . . 154 N Operating Mode Perchlorate Materials Navigation Overheated Engine Requirements, California ...... 313 Connected Services ...... 455 Protection ...... 333 Personalization New Vehicle Break-In ...... 216 Operation Vehicle ...... 167 Noise Control System ...... 342 Fog Lamps ...... 181 Pickup Conversion to Outlets Chassis Cab ...... 310 Power ...... 132 Power Overheated Engine Door Locks ...... 45 Protection Operating Mode . . . . 333 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/- Mexico-1500-11698638) - 2019 - crc - 5/16/18

Index 467 Power (cont'd) Rear Seats (cont'd) Reporting Safety Defects Mirrors ...... 56 Heated ...... 78 Canadian Government ...... 444 Outlets ...... 132 Rear Storage ...... 126 General Motors ...... 444 Protection, Battery ...... 185 Rear Vision Camera (RVC) . . . . . 254 U.S. Government ...... 443 Retained Accessory (RAP) . . . 225 Rear Windows ...... 65 Restraints Seat Adjustment ...... 70 Rearview Mirrors ...... 60 Where to Put ...... 104 Windows ...... 63 Automatic Dimming ...... 60 Retained Accessory Power Assist Steps ...... 52 Reclining Seatbacks ...... 71 Power (RAP) ...... 225 Pregnancy, Using Seat Belts . . . . 84 Recommended Reverse Tilt Mirrors ...... 59 Privacy Fuel ...... 271 Ride Control Systems Vehicle Data Recording ...... 445 Recommended Fluids and Enhanced Traction Program Lubricants ...... 425 System (ETS) ...... 250 Courtesy Transportation ...... 439 Records Roads Prohibited Fuels ...... 272 Maintenance ...... 428 Driving, Wet ...... 205 Proposition Recreational Vehicle Towing . . . . 399 Roadside Assistance 65 Warning, Reimbursement Program, Program ...... 437 California ...... 313,337, 395, GM Mobility ...... 437 Roof Back Cover Remote Keyless Entry Sunroof ...... 65 Publication Ordering (RKE) System ...... 33, 41 Rotation, Tires ...... 376 Information ...... 442 Remote Vehicle Start ...... 43 Routing, Engine Drive Belt ...... 432 R Replacement Parts Running the Vehicle While Airbags ...... 98 Parked ...... 229 Radio Frequency Statement . . . . 443 Maintenance ...... 427 Reading Lamps ...... 184 S Replacing Airbag System ...... 98 Rear Axle ...... 341 Safety Defects Reporting Replacing LATCH System Locking ...... 250 Canadian Government ...... 444 Parts after a Crash ...... 117 Rear Camera Mirror ...... 60 General Motors ...... 444 Replacing Seat Belt System Rear Seats ...... 77 Parts after a Crash ...... 85 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/- Mexico-1500-11698638) - 2019 - crc - 5/16/18

468 Index Safety Defects Reporting (cont'd) Security Specifications and U.S. Government ...... 443 Light ...... 157 Capacities ...... 430 Safety Locks ...... 46 OnStar ...... 449 Speedometer ...... 142 Safety System Check ...... 84 Vehicle ...... 54 Start Assist, Hill ...... 242 Scheduling Appointments ...... 439 Vehicle Alarm ...... 54 Start Vehicle, Remote ...... 43 Seat Belts ...... 79 Service ...... 195 Starter Switch Check ...... 343 Care ...... 85 Accessories and Starting the Engine ...... 221 Extender ...... 84 Modifications ...... 313 Steering ...... 199 How to Wear Seat Belts Climate Control System ...... 188 Heated Wheel ...... 131 Properly ...... 80 Doing Your Own Work ...... 314 Wheel Adjustment ...... 130 Lap-Shoulder Belt ...... 82 Maintenance Records ...... 428 Wheel Controls ...... 131 Reminders ...... 146 Maintenance, General Steps Replacing after a Crash ...... 85 Information ...... 413 Power Assist ...... 52 Use During Pregnancy ...... 84 Parts Identification Label . . . . . 429 Stop/Start System ...... 222 Seats Scheduling Appointments . . . . . 439 Stoplamps and Back-up Lamps Adjustment, Front ...... 69 Service Electric Parking Bulb Replacement ...... 347 Center Seat ...... 70 Brake Light ...... 152 Storage Head Restraints ...... 68 Services Rear ...... 126 Heated and Ventilated Front . . . .75 Special Application ...... 421 Storage Areas Heated, Rear ...... 78 Servicing the Airbag ...... 96 Center Console ...... 126 Lumbar Adjustment, Front ...... 71 Shifting Floor Console ...... 127 Memory ...... 73 Into Park ...... 225 Glove Box ...... 125 Power Adjustment, Front ...... 70 Out of Park ...... 227 Underseat ...... 126 Rear ...... 77 Side Blind Zone Alert (SBZA) . . . 267 Storage Compartments ...... 125 Reclining Seatbacks ...... 71 Signals, Turn and Struts Underseat Storage ...... 126 Lane-Change ...... 181 Gas ...... 345 Securing Child Snow Plow ...... 307 Stuck Vehicle ...... 208 Restraints ...... 117, 120, 121 Special Application Services . . . . 421 Sun Visors ...... 65 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/- Mexico-1500-11698638) - 2019 - crc - 5/16/18

Index 469 Sunroof ...... 65 Tires (cont'd) Towing (cont'd) Symbols ...... 3 Designations ...... 363 General Information ...... 276 System Different Size ...... 379 Recreational Vehicle ...... 399 Brake Pad Life ...... 335 Full-Size Spare ...... 394 Trailer ...... 281 Engine Air Filter Life ...... 325 If a Tire Goes Flat ...... 383 Trailer Sway Control (TSC) . . . 293 Forward Collision Inspection ...... 375 Vehicle ...... 398 Alert (FCA) ...... 260 Low Profile ...... 360 Traction Infotainment ...... 187, 446 Pressure ...... 367, 368 Limited-Slip Differential ...... 250 Noise Control ...... 342 Pressure Light ...... 156 Off Light ...... 154 Systems Pressure Monitor Operation . . 370 Traction Control/Electronic Driver Assistance ...... 253 Pressure Monitor System . . . . . 369 Stability Control ...... 243 Rotation ...... 376 Trailer T Sidewall Labeling ...... 360 Sway Control (TSC) ...... 293 Tachometer ...... 143 Terminology and Definitions . . 364 Towing ...... 281 Tailgate ...... 47 Uniform Tire Quality Trailer Towing Taillamps Grading ...... 380 App ...... 296 Bulb Replacement ...... 347 Wheel Alignment and Tire Trailering App ...... 296 Task Lighting ...... 182 Balance ...... 381 Transfer Case ...... 235 Text Telephone (TTY) Users . . . . 436 Wheel Replacement ...... 381 Transmission Theft-Deterrent Systems ...... 55 When It Is Time for New Automatic ...... 229 Immobilizer ...... 55 Tires ...... 377 Fluid, Automatic ...... 325 Time ...... 132 Winter ...... 359 Transportation Program, Tires ...... 358 Top Tier Fuel ...... 271 Courtesy ...... 439 All-Season ...... 359 Tow/Haul Mode ...... 234 Trip Odometer ...... 142 All-Terrain ...... 360 Tow/Haul Mode Light ...... 153 Truck-Camper Loading Buying New Tires ...... 378 Towing Information ...... 214 Chains ...... 382 Driving Characteristics ...... 276 Turn and Lane-Change Changing ...... 385 Equipment ...... 285 Signals ...... 181 GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/- Mexico-1500-11698638) - 2019 - crc - 5/16/18

470 Index Turn Signal Ventilation, Air ...... 194 Winter Bulb Replacement ...... 347 Visors ...... 65 Driving ...... 206 U Voltmeter Gauge ...... 146 Winter Tires ...... 359 Wiper Blade Replacement ...... 344 Underseat Storage ...... 126 W Wireless Charging ...... 135 Uniform Tire Quality Grading . . . 380 Warning Universal Remote System ...... 172 Brake System Light ...... 151 Operation ...... 175 Caution and Danger ...... 2 Programming ...... 172 Lane Departure (LDW) ...... 269 Using This Manual ...... 2 Warning Lights, Gauges, and V Indicators ...... 137 Warnings Vehicle Hazard Flashers ...... 180 Alarm System ...... 54 Washer Fluid ...... 334 Canadian Owners ...... 2 Wheels Control ...... 198 Alignment and Tire Balance . . 381 Identification Number (VIN) . . . 429 Different Size ...... 379 Load Limits ...... 209 Replacement ...... 381 Messages ...... 166 When It Is Time for New Personalization ...... 167 Tires ...... 377 Remote Start ...... 43 Where to Put the Restraint . . . . . 104 Security ...... 54 Windows ...... 62 Speed Messages ...... 167 Manual ...... 63 Towing ...... 398 Power ...... 63 Vehicle Ahead Indicator ...... 154 Rear ...... 65 Vehicle Care Windshield Tire Pressure ...... 367 Replacement ...... 345 Vehicle Data Recording and Wiper/Washer ...... 131 Privacy ...... 445 19_GMC_Sierra_Sierra_Denali_COV_en_US_23400205A_2018MAY17.ai 1 5/8/2018 3:00:43 PM 2019 Sierra/Sierra Denali

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