GMC Sierra 2025 - User Manual

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2025 Sierra/Sierra Denali 2500 HD/3500 HD

Sierra/Sierra Denali

2500 HD/3500 HD

Owner’s Manual

2025

United States

Scan to Access

United States and Canada

Customer Assistance

1-800-263-3777

Connected Services

1-888-4-ONSTAR

Customer Assistance

1-800-462-8782

Roadside Assistance

1-888-881-3302

• Owner’s Manuals

• Warranty Information

• Connected Services

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• How-To Videos

• Vehicle Diagnostics

• Scheduled Maintenance

• Vehicle Features

• Many Additional Resources

Canada

United States

87855255 A

Roadside Assistance

1-800-268-6800

Canada

CMY

25_GMC_Sierra_Denali2500HD_3500HD_COV_en_US_87855255 A_2024MAY30.pdf 1 4/25/2024 8:03:32 AM

Main Page

Table of Contents2
California Proposition 65 Warning2
Introduction3
Canadian Vehicle Owners3
Using this Manual3
Danger, Warning, and Caution3
Keys, Doors, and Windows14
Keys14
Remote Key15
Remote Key Operation15
Remote Start21
Door Locks22
Power Door Locks23
Delayed Locking23
Automatic Door Locks24
Lockout Protection24
Safety Locks24
Doors Tailgate25
Transporting Items that Can Catch Fire31
Power Assist Steps32
Vehicle Security32
Vehicle Alarm System32
Steering Column Lock33
Immobilizer34
Immobilizer Operation34
Exterior Mirrors Convex Mirrors35
Manual Mirrors35
Trailer-Tow Mirrors35
Power Mirrors36
Folding Mirrors36
Heated Mirrors37
Automatic Dimming Mirror37
Blind Spot Mirrors37
Reverse Tilt Mirrors38
Interior Mirrors Interior Rearview Mirrors38
Manual Rearview Mirror39
Automatic Dimming Rearview Mirror39
Rear Camera Mirror39
Truck Bed Camera Rearview Mirror41
Windows42
Power Windows42
Rear Windows44
Sun Visors44
Roof Sunroof44
Seats and Restraints46
Head Restraints47
Front Seats Seat Adjustment48
Center Seat48
Power Seat Adjustment49
Reclining Seatbacks49
Lumbar Adjustment50
Massage51
Memory Seats52
Heated and Ventilated Front Seats54
Rear Seats55
Heated Rear Seats56
Seat Belts57
Buckle to Drive58
How to Wear Seat Belts Properly58
Lap-Shoulder Belt60
Seat Belt Use During Pregnancy63
Seat Belt Extender63
Safety System Check63
Seat Belt Care64
Replacing Seat Belt System Parts after a Crash64
Airbag System64
Where Are the Airbags66
When Should an Airbag Inflate67
What Makes an Airbag Inflate68
How Does an Airbag Restrain68
What will You See after an Airbag Inflates68
Passenger Sensing System69
Servicing the Airbag-Equipped Vehicle73
Adding Equipment to the Airbag-Equipped Vehicle73
Airbag System Check74
Replacing Airbag System Parts after a Crash74
Child Restraints Older Children75
Infants and Young Children76
Child Restraint Systems78
Where to Put the Restraint80
Lower Anchors and Tethers for Children (LATCH System)81
Replacing LATCH System Parts after a Crash92
Securing Child Restraints (with the Seat Belt in the Rear Seat)93
Securing Child Restraints (with the Seat Belt in the Front Passenger Seat)96
Securing Child Restraints (with the Seat Belt in the Center Front Seat)99
Storage100
Storage Compartments Storage Compartments100
Glove Box100
Cupholders101
Underseat Storage101
Rear Storage101
Center Console Storage102
Floor Console Storage103
Additional Storage Features Cargo Tie-Downs103
Instruments and Controls106
Controls107
Steering Wheel Adjustment107
Heated Steering Wheel107
Horn108
Windshield Wiper/Washer108
Compass109
Clock109
Power Outlets109
Wireless Charging111
Warning Lights, Gauges, and Indicators112
Instrument Cluster (Base Level)113
Instrument Cluster (Uplevel)114
Speedometer117
Odometer117
Trip Odometer117
Tachometer117
Fuel Gauge117
Engine Oil Pressure Gauge118
Engine Coolant Temperature Gauge120
Transmission Temperature Gauge (Uplevel Only)120
Voltmeter Gauge121
Seat Belt Reminders122
Airbag Readiness Light123
Passenger Airbag Status Indicator123
Charging System Light124
Malfunction Indicator Lamp (Check Engine Light)124
Brake System Warning Light126
Electric Parking Brake Light126
Service Electric Parking Brake Light127
Antilock Brake System (ABS) Warning Light127
Four-Wheel-Drive Light127
Tow/Haul Mode Light128
Hill Descent Control Light128
Lane Departure Warning (LDW) Light128
Automatic Emergency Braking (AEB) Disabled Light128
Vehicle Ahead Indicator128
Pedestrian Ahead Indicator129
Traction off Light129
Traction Control System (TCS)/ Electronic Stability Control Light129
Electronic Stability Control (ESC) off Light130
Engine Coolant Temperature Warning Light130
Driver Mode Control Light130
Tire Pressure Light131
Engine Oil Pressure Light (Uplevel Cluster)131
Low Fuel Warning Light132
Security Light132
High-Beam on Light132
Front Fog Lamp Light132
Lamps on Reminder132
Cruise Control Light133
Adaptive Cruise Control Light133
Door Ajar Light133
Information Displays Driver Information Center (DIC) (Base Level)133
Driver Information Center (DIC) (Uplevel)135
Head-Up Display (HUD)137
Vehicle Messages138
Vehicle Messages140
Engine Power Messages141
Vehicle Speed Messages141
Universal Remote System141
Universal Remote System Programming142
Universal Remote System Operation144
Lighting145
Exterior Lighting Exterior Lamp Controls145
High-Beam Systems145
Exterior Lamps off Reminder147
Headlamp High/Low-Beam Changer147
Flash-To-Pass147
Daytime Running Lamps (DRL)147
Automatic Headlamp System147
Hazard Warning Flashers148
Turn and Lane-Change Signals149
Fog Lamps150
Task Lighting150
Auxiliary Roof-Mounted Lamp150
Exterior Cargo Lamps151
Interior Lighting Instrument Panel Illumination Control152
Dome Lamps153
Reading Lamps153
Lighting Features Entry Lighting154
Exit Lighting154
Battery Load Management154
Battery Power Protection155
Exterior Lighting Battery Saver155
Infotainment System156
Introduction156
Overview (Base Radio)157
Overview (Uplevel Radio)159
Steering Wheel Controls160
Using the System160
Software Updates163
AM-FM Radio (Base Radio)163
AM-FM Radio (Uplevel Radio)164
Satellite Radio165
Radio Reception166
Multi-Band Antenna166
Audio Players166
Avoiding Untrusted Media Devices166
USB Port166
Bluetooth Audio (Base Radio)167
Bluetooth Audio (Uplevel Radio)167
Using the Navigation System168
Maps169
Navigation Symbols169
Destination169
Global Positioning System (GPS)170
Vehicle Positioning170
Problems with Route Guidance171
Voice Recognition171
Bluetooth (Overview)173
Bluetooth (Pairing and Using a Phone for Uplevel Radio)174
Apple Carplay and Android Auto (Base Radio)178
Apple Carplay and Android Auto (Uplevel Radio)179
Settings (Base Radio)181
Settings (Uplevel Radio)183
Teen Driver185
Trademarks and License Agreements188
Climate Controls191
Climate Control Systems191
Dual Automatic Climate Control System193
Air Vents195
Maintenance196
Passenger Compartment Air Filter196
Driving and Operating198
Driving Information Driving for Better Fuel Economy199
Distracted Driving199
Defensive Driving200
Impaired Driving200
Control of a Vehicle200
Braking200
Steering201
Off-Road Recovery202
Loss of Control202
Off-Road Driving202
Driving on Wet Roads206
Hill and Mountain Roads207
Winter Driving207
If the Vehicle Is Stuck209
Vehicle Load Limits210
Certification/Tire Label212
Maximum Weight214
Truck-Camper Loading Information215
Starting and Operating New Vehicle Break-In216
Ignition Positions217
Starting the Engine218
Fast Idle System219
Engine Heater219
Retained Accessory Power (RAP)221
Vehicle Shutdown221
Shifting into Park221
Shifting out of Park222
Parking over Things that Burn223
Extended Parking223
Engine Exhaust223
Running the Vehicle While Parked224
Automatic Transmission224
Manual Mode226
Tow/Haul Mode227
Speed Automatic Transmission227
Drive Systems Four-Wheel Drive228
Antilock Brake System (ABS)233
Electric Parking Brake234
Brake Assist235
Hill Start Assist (HSA)235
Ride Control Systems Traction Control/Electronic Stability Control236
Hill Descent Control (HDC)237
Driver Mode Control238
Locking Rear Axle (Automatic Mechanical)240
Locking Rear Axle (Electronic)240
Cruise Control241
Adaptive Cruise Control (Camera)243
Advanced Driver Assistance Systems254
Assistance Systems for Parking or Backing255
Rear Vision Camera (RVC)256
Surround Vision System256
Park Assist264
Rear Cross Traffic Alert (RCTA) System265
Assistance Systems for Driving265
Forward Collision Alert (FCA) System265
Automatic Emergency Braking (AEB)267
Front Pedestrian Braking (FPB) System268
Lane Change Alert (LCA)270
Lane Departure Warning (LDW)272
Top Tier Fuel273
Recommended Fuel273
Prohibited Fuels274
Fuels in Foreign Countries274
Fuel Additives274
E85 or Flexfuel275
Filling the Tank (Pickup Models)275
Filling the Tank (Chassis Cab and Box Delete Models)277
Filling a Portable Fuel Container278
Trailer Towing General Towing Information278
Driving Characteristics and Towing Tips278
Trailer Towing283
Towing Equipment286
Auxiliary Battery291
Trailer Sway Control (TSC)297
Trailering App298
Conversions and Add-Ons Add-On Electrical Equipment308
Adding a Snow Plow or Similar Equipment309
Pickup Conversion to Chassis Cab310
Vehicle Care312
General Information General Information313
California Perchlorate Materials Requirements313
Accessories and Modifications313
Vehicle Checks Doing Your Own Service Work314
Hood314
Engine Compartment Overview316
Engine Oil317
Engine Oil Life System319
Automatic Transmission Fluid320
Engine Air Filter Life System320
Engine Air Cleaner/Filter321
Cooling System322
Engine Overheating324
Overheated Engine Protection Operating Mode326
Engine Fan326
Power Steering Fluid326
Washer Fluid327
Brakes328
Brake Pad Life System328
Brake Fluid329
Battery - North America330
Four-Wheel Drive332
Front Axle332
Rear Axle332
Noise Control System332
Automatic Transmission Shift Lock Control Function Check (Mechanical Shifter)333
Wiper Blade Replacement334
Glass Replacement334
Windshield Replacement334
Gas Strut(S)334
Headlamp Aiming Front Headlamp Aiming335
Bulb Replacement335
Halogen Bulbs336
LED Lighting336
Headlamps, Front Turn Signal, Sidemarker, and Parking Lamps336
Taillamps, Turn Signal, Stoplamps, and Back-Up Lamps336
Center High-Mounted Stoplamp (CHMSL) and Cargo Lamp337
License Plate Lamp338
Electrical System Electrical System Overload338
Fuses and Circuit Breakers340
Engine Compartment Fuse Block340
Instrument Panel Fuse Block (Left)344
Instrument Panel Fuse Block (Right)346
Wheels and Tires348
Tires348
All-Season Tires349
Winter Tires349
All-Terrain Tires350
Tire Sidewall Labeling350
Tire Designations351
Tire Terminology and Definitions351
Tire Pressure353
Tire Pressure Monitor System354
Tire Pressure Monitor Operation355
Monitoring Operation359
Tire Inspection360
Tire Rotation360
When It Is Time for New Tires362
Buying New Tires363
Different Size Tires and Wheels364
Uniform Tire Quality Grading365
Wheel Alignment and Tire Balance366
Wheel Replacement366
Tire Traction Devices367
If a Tire Goes Flat367
Tire Changing369
Full-Size Spare Tire380
Jump Starting Jump Starting - North America381
Towing the Vehicle384
Recreational Vehicle Towing385
Appearance Care388
Exterior Care388
Underbody Maintenance393
Interior Care393
Floor Mats396
Service and Maintenance398
Maintenance Schedule399
Special Application Services402
Recommended Fluids, Lubricants, and Parts403
Maintenance Records405
Technical Data406
Vehicle Identification Number406
Vehicle Data406
Engine Specifications408
Engine Drive Belt Routing408
Customer Information410
Customer Information Customer Satisfaction Procedure410
Customer Information411
Customer Assistance Offices412
Customer Assistance for Text Telephone (TTY) Users412
Online Account and Customer Support412
GM Mobility Reimbursement Program (U.S. Only)413
Roadside Assistance Program413
Scheduling Service Appointments415
Courtesy Transportation Program415
Additional Program Information416
Collision Damage Repair416
Publication Ordering Information417
Reporting Safety Defects418
Radio Frequency Statement418
Reporting Safety Defects Reporting Safety Defects to the United States Government418
Reporting Safety Defects to the Canadian Government419
Reporting Safety Defects to General Motors419
Vehicle Data Recording and Privacy419
Cybersecurity419
Event Data Recorders420
Onstar420
Infotainment System421
Onstar422
Onstar Overview422
Onstar Services423
Warranty424
Connected Services427
Index430

Brand	GMC
Model	Sierra 2025
Category	Automobile
Language	English

GMC Sierra 2025 - User Manual

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