21_GMC_Sierra_SierraDenali_2500HD3500HD_COV_en_US_84744494B_2020NOV25.pdf 1 11/5/2020 2:26:41 PM C M Y CM MY CY CMY K GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA- Localizing-U.S./Canada/Mexico-14632286) - 2021 - CRC - 11/19/20 Introduction This manual describes features that may or Contents may not be on the vehicle because of optional equipment that was not purchased Introduction . 1 on the vehicle, model variants, country specifications, features/applications that may Keys, Doors, and Windows . 7 not be available in your region, or changes Seats and Restraints . 46 subsequent to the printing of this owner’s manual. Storage . 96 If the vehicle has the Duramax diesel Instruments and Controls . 100 The names, logos, emblems, slogans, vehicle model names, and vehicle body designs engine, see the Duramax diesel supplement Lighting . 140 appearing in this manual including, but not for additional and specific information on this engine. Infotainment System . 149 limited to, GM, the GM logo, GMC, the GMC Truck Emblem, SIERRA, and DENALI are Refer to the purchase documentation Climate Controls . 205 trademarks and/or service marks of General relating to your specific vehicle to confirm Driving and Operating . 212 Motors LLC, its subsidiaries, affiliates, the features. or licensors. Vehicle Care . 307 Keep this manual in the vehicle for quick For vehicles first sold in Canada, substitute reference. Service and Maintenance . 389 the name “General Motors of Canada Technical Data . 403 Company” for GMC Division wherever it Customer Information . 407 appears in this manual. Reporting Safety Defects . 415 OnStar . 419 Connected Services . 424 Index. 427 Litho in U.S.A. Part No. 84744494 B Second Printing © 2020 General Motors LLC. All Rights Reserved. GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA- Localizing-U.S./Canada/Mexico-14632286) - 2021 - CRC - 11/19/20 2 Introduction Canadian Vehicle Owners Symbols { Danger A French language manual can be obtained The vehicle has components and labels that Danger indicates a hazard with a high from your dealer, at www.helminc.com, use symbols instead of text. Symbols are or from: level of risk which will result in serious shown along with the text describing the injury or death. operation or information relating to a Propriétaires Canadiens specific component, control, message, gauge, On peut obtenir un exemplaire de ce guide or indicator. en français auprès du concessionnaire ou à { Warning M : Shown when the owner’s manual has l'adresse suivante: Warning indicates a hazard that could additional instructions or information. result in injury or death. Helm, Incorporated * Attention: Customer Service : Shown when the service manual has additional instructions or information. 47911 Halyard Drive Caution Plymouth, MI 48170 0 : Shown when there is more information Caution indicates a hazard that could USA on another page —“see page.” result in property or vehicle damage. Using this Manual Vehicle Symbol Chart To quickly locate information about the Here are some additional symbols that may vehicle, use the Index in the back of the be found on the vehicle and what they manual. It is an alphabetical list of what is mean. See the features in this manual for in the manual and the page number where information. it can be found. u : Air Conditioning System Danger, Warning, and Caution A circle with a slash through it is a safety G : Air Conditioning Refrigerant Oil symbol which means “Do not,”“Do not do Warning messages found on vehicle labels 9 : Airbag Readiness Light and in this manual describe hazards and this,” or “Do not let this happen.” what to do to avoid or reduce them. ! : Antilock Brake System (ABS) $ : Brake System Warning Light GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA- Localizing-U.S./Canada/Mexico-14632286) - 2021 - CRC - 11/19/20 Introduction 3 9 : Dispose of Used Components Properly 7 : Rear Cross Traffic Alert P : Do Not Apply High Pressure Water I : Registered Technician B : Engine Coolant Temperature / : Remote Vehicle Start _ : Flame/Fire Prohibited h : Risk of Electrical Fire H : Flammable > : Seat Belt Reminders [ : Forward Collision Alert I : Side Blind Zone Alert R : Fuse Block Cover Lock Location 7 : Tire Pressure Monitor + : Fuses d : Traction Control/StabiliTrak/Electronic Stability Control (ESC) j : ISOFIX/LATCH System Child Restraints a : Under Pressure Q : Keep Fuse Block Covers Properly Installed V : Vehicle Ahead Indicator | : Lane Change Alert @ : Lane Departure Warning A : Lane Keep Assist * : Malfunction Indicator Lamp : : Oil Pressure X : Park Assist ~ : Pedestrian Ahead Indicator O : Power GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA- Localizing-U.S./Canada/Mexico-14632286) - 2021 - CRC - 11/19/20 4 Introduction Instrument Panel Overview GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA- Localizing-U.S./Canada/Mexico-14632286) - 2021 - CRC - 11/19/20 Introduction 5 1. Tow/Haul Mode (On Some Models). See 11. X Park Assist Switch (If Equipped). See 12. Power Outlet (Alternating Current) (If Driver Mode Control 0 251. Assistance Systems for Parking or Backing Equipped). See Power Outlets 0 103. Automatic Transfer Case Control (If 0 255. 13. Power Outlets 0 103. 0 Equipped). See Four-Wheel Drive 242. 5 Power Release Tailgate (If 14. USB Port 0 159. 0 Driver Mode Control 251 (If Equipped). Equipped). See Tailgate 0 23. 15. Wireless Charging 0 104 (If Equipped). 0 2. Air Vents 210. | Hazard Warning Flashers 0 143. 16. Trailer Brake Control Panel (If Equipped). 3. Head-Up Display (HUD) 0 128 (If See “Integrated Trailer Brake Control Traction Control/Electronic Stability Equipped). g System” under Towing Equipment 0 282. Control 0 248. 4. Turn Signal Lever. See Turn and 17. ENGINE START/STOP. See Ignition Lane-Change Signals 0 144. - DC/AC Switch. See Power Outlets Positions (Keyless Access) 0 232 or 0 103. 0 Windshield Wiper/Washer 0 102. Ignition Positions (Key Access) 230. @ 0 0 5. Instrument Cluster 0 107. Lane Departure Warning (LDW) 269 18. Steering Wheel Controls 101 (If (If Equipped). Equipped). 6. Shift Lever. See Automatic Transmission 0 239. 5 Hill Descent Control Switch (If Driver Information Center (DIC) Controls. Equipped). See Hill Descent Control (HDC) See Driver Information Center (DIC) (Base Range Selection Mode. See Manual Mode 0 Level) 0 124 or 0 241. 250. j 0 Driver Information Center (DIC) (Midlevel 7. Light Sensor. See Automatic Headlamp Power Assist Steps 30 (If and Uplevel) 0 126. 0 Equipped). System 142. 19. Horn 0 102. L Express Window Down Button (If 8. Infotainment Controls. See Overview 20. Hood Release. See Hood 0 310. 0 150. Equipped). See Power Windows 0 41. 21. Steering Wheel Adjustment 0 101 (Out 0 Tow/Haul Mode 0 242 (On Some 9. Climate Control Systems 205 (If of View). Equipped). Models). 22. Cruise Control 0 252. Dual Automatic Climate Control System Exhaust Brake (If Equipped). See Duramax 0 207 (If Equipped). Diesel Supplement. Forward Collision Alert (FCA) System 0 264 (If Equipped). 10. Heated and Ventilated Front Seats 0 53 Power Take-Off (PTO) (If Equipped). See 0 (If Equipped). Duramax Diesel Supplement. Heated Steering Wheel 101 (If Equipped). GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA- Localizing-U.S./Canada/Mexico-14632286) - 2021 - CRC - 11/19/20 6 Introduction 23. Data Link Connector (DLC) (Out of View). See Malfunction Indicator Lamp (Check Engine Light) 0 117. 24. Electric Parking Brake 0 247. 25. Fog Lamps 0 144 (If Equipped). Instrument Panel Illumination Control 0 146. Exterior Cargo Lamps 0 145. Exterior Lamp Controls 0 140. Task Lighting 0 145 (If Equipped). GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA- Localizing-U.S./Canada/Mexico-14632286) - 2021 - CRC - 11/19/20 Keys, Doors, and Windows 7 Exterior Mirrors Keys and Locks Keys, Doors, and Convex Mirrors . 33 Windows Manual Mirrors . 33 Keys (Key Access) Trailer-Tow Mirrors . 34 Keys and Locks Power Mirrors . 35 { Warning Folding Mirrors . 36 Keys (Key Access) . 7 Leaving children in a vehicle with the Keys (Keyless Access) . 9 Heated Mirrors . 36 ignition key is dangerous and children or Remote Keyless Entry (RKE) System . 10 Automatic Dimming Mirror . 36 Remote Keyless Entry (RKE) System Blind Spot Mirrors . 36 others could be seriously injured or killed. Operation (Key Access) . 11 Reverse Tilt Mirrors . 37 They could operate the power windows Remote Keyless Entry (RKE) System or other controls or make the vehicle Interior Mirrors move. The windows will function with Operation (Keyless Access) . 13 Interior Rearview Mirrors . 37 the keys in the ignition, and children or Remote Vehicle Start . 20 Manual Rearview Mirror . 38 Door Locks . 21 Automatic Dimming Rearview Mirror . 38 others could be caught in the path of a Power Door Locks . 22 Rear Camera Mirror . 38 closing window. Do not leave children in Delayed Locking . 22 Truck Bed Camera Rearview Mirror . 40 a vehicle with the ignition key. Automatic Door Locks . 22 Lockout Protection . 22 Windows Safety Locks . 23 Windows . 41 Manual Windows . 41 Doors Power Windows . 41 Tailgate . 23 Rear Windows . 43 Power Assist Steps . 30 Sun Visors . 43 Vehicle Security Roof Vehicle Security . 31 Sunroof . 44 Vehicle Alarm System . 31 Steering Column Lock . 32 Immobilizer . 32 Immobilizer Operation . 32 GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA- Localizing-U.S./Canada/Mexico-14632286) - 2021 - CRC - 11/19/20 8 Keys, Doors, and Windows replacement ignition keys have a small hole. { Warning See your dealer if a replacement key is If the key is unintentionally rotated while required. the vehicle is running, the ignition could The combination and size of the rings that be moved out of the RUN position. This came with your keys were specifically could be caused by heavy items hanging selected for your vehicle.