
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
478 OnStar
A temporary loss of GPS can cause
loss of the ability to send a
Turn-by-Turn Navigation route. The
Advisor may give a verbal route or
may ask for a call back after the
vehicle is driven into an open area.
Cellular and GPS Antennas
Cellular reception is required for
OnStar to send remote signals to
the vehicle. Do not place items over
or near the antenna to prevent
blocking cellular and GPS signal
reception.
Unable to Connect to OnStar
Message
If there is limited cellular coverage
or the cellular network has reached
maximum capacity, this message
may come on. Press
Qto try the
call again or try again after driving a
few miles into another cellular area.
Vehicle and Power Issues
OnStar services require a vehicle
electrical system, wireless service,
and GPS satellite technologies to be
available and operating for features to function properly. These systems
may not operate if the battery is
discharged or disconnected.
Add-on Electrical Equipment
The OnStar system is integrated
into the electrical architecture of the
vehicle. Do not add any electrical
equipment. See
Add-On Electrical
Equipment 0334. Added electrical
equipment may interfere with the
operation of the OnStar system and
cause it to not operate.
Vehicle Software Updates
OnStar or GM may remotely deliver
software updates or changes to the
vehicle without further notice or
consent. These updates or changes
may enhance or maintain safety,
security, or the operation of the
vehicle or the vehicle systems.
Software updates or changes may
affect or erase data or settings that
are stored in the vehicle, such as
OnStar Hands-Free Calling name
tags, saved navigation destinations,
or pre-set radio stations. Neither
OnStar nor GM is responsible for
any affected or erased data or settings. These updates or changes
may also collect personal
information. Such collection is
described in the OnStar privacy
statement or separately disclosed at
the time of installation. These
updates or changes may also cause
a system to automatically
communicate with GM servers to
collect information about vehicle
system status, identify whether
updates or changes are available,
or deliver updates or changes. An
active OnStar agreement constitutes
consent to these software updates
or changes and agreement that
either OnStar or GM may remotely
deliver them to the vehicle.
Privacy
The complete OnStar Privacy
Statement may be found at
www.onstar.com (U.S.),
or www.onstar.ca (Canada). We
recommend that you review it. If you
have any questions, call
1-888-4ONSTAR (1-888-466-7827)
or press
Qto speak with an
Advisor. Users of wireless
communications are cautioned that

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
486 Index
General Information (cont'd)Towing . . . . . . . . . . . . . . . . . . . . . . . . 304
Vehicle Care . . . . . . . . . . . . . . . . . . 340
Glass Replacement . . . . . . . . . . . . . 372
Glove Box . . . . . . . . . . . . . . . . . . . . . . 108
GM Mobility Reimbursement
Program . . . . . . . . . . . . . . . . . . . . . . . 461
H
Halogen Bulbs . . . . . . . . . . . . . . . . . . 373
Hazard Warning Flashers . . . . . . . 170
Head Restraints . . . . . . . . . . . . . . . . . 51
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . 373
Automatic . . . . . . . . . . . . . . . . . . . . . 169
Bulb Replacement . . . . . . . . . . . . 373
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . 169
Flash-to-Pass . . . . . . . . . . . . . . . . . 169
High Intensity Discharge
(HID) Lighting . . . . . . . . . . . . . . . 373
High-Beam On Light . . . . . . . . . . 140
High/Low Beam Changer . . . . . 168
Lamps On Reminder . . . . . . . . . 140
Heated Steering Wheel . . . . . . . . . . . . . . . .114
Heated and Ventilated Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Heated Mirrors . . . . . . . . . . . . . . . . . . . 43 Heater
Engine Coolant . . . . . . . . . . . . . . . 262
High Voltage Devices and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . 376
High-Beam On Light . . . . . . . . . . . . 140
High-Speed Operation . . . . . . . . . . 393
Hill and Mountain Roads . . . . . . . . 247
Hill Descent Control (HDC) . . . . . 286
Hill Descent Control Light . . . . . . . 136
Hill Start Assist (HSA) . . . . . . . . . . 283
Home Page . . . . . . . . . . . . . . . . 181, 183
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
How to Wear Safety Belts Properly . . . . . . . . . . . . . . . . . . . . . . . . 60
I
Idle SystemFast . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Ignition Positions . . . . . . . . . . . . . . . 259
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . . . . . 371
Immobilizer . . . . . . . . . . . . . . . . . . . . . . 40
Indicator Vehicle Ahead . . . . . . . . . . . . . . . . 137
Infants and Young Children,
Restraints . . . . . . . . . . . . . . . . . . . . . . 83
Infotainment . . . . . . . . . . . . . . . . . . . . 176
Infotainment System . . . . . . . . . . . . 470 Instrument Cluster . . . . . . . . . . . . . . 121
Instrument Panel
Storage Area . . . . . . . . . . . . . . . . . 108
Interior Rearview Mirrors . . . . . . . . . 45
Introduction . . . . . . . . . . . . . . . . . . . . . . . 2
J
Jack Auxiliary . . . . . . . . . . . . . . . . . . . . . . 202
Jump Starting - North America . . . . . . . . . . . . . . . . . . . . . . . 418
K
Key and Lock Messages . . . . . . . . 148
Keyless EntryRemote (RKE) System . . . . . . . . . 31
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
L
Labeling, Tire Sidewall . . . . . . . . . . 385
Lamps
Auxiliary RoofMounted Lamp . . . . . . . . . . . . . . 171
Cargo . . . . . . . . . . . . . . . . . . . . . . . . . 172
Daytime Running (DRL) . . . . . . 169
Dome . . . . . . . . . . . . . . . . . . . . . . . . . 173
Exterior Controls . . . . . . . . . . . . . . 166
Exterior Lamps Off Reminder . . . . . . . . . . . . . . . . . . . 168
Malfunction Indicator . . . . . . . . . 133

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
Index 491
Shift Lock Control FunctionCheck, Automatic
Transmission . . . . . . . . . . . . . . . . . . 371
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . 264
Out of Park . . . . . . . . . . . . . . . . . . . 265
Signals, Turn and
Lane-Change . . . . . . . . . . . . . . . . . 170
Snow Plow . . . . . . . . . . . . . . . . . . . . . 334
Software Updates . . . . . . . . . . . . . . 184
Special Application Services . . . . 444
Specifications and Capacities . . . . . . . . . . . . . . . . . . . . . 453
Speedometer . . . . . . . . . . . . . . . . . . . 125
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . . . 137
Start Assist, Hill . . . . . . . . . . . . . . . . . 283
Start Vehicle, Remote . . . . . . . . . . . 33
Starter Switch Check . . . . . . . . . . . 371
Starting the Engine . . . . . . . . . . . . . 260
Steering . . . . . . . . . . . . . . . . . . . . . . . . 240 Fluid, Power . . . . . . . . . . . . . . . . . . 363
Heated Wheel . . . . . . . . . . . . . . . . .114
Wheel Adjustment . . . . . . . . . . . . .113
Wheel Controls . . . . . . . . . . . . . . . .113
Steering System Messages . . . . . 151
Steps Power Assist . . . . . . . . . . . . . . . . . . . 37 Stoplamps and Back-up Lamps
Bulb Replacement . . . . . . . . . . . . 374
Storage Areas Center Console . . . . . . . . . . . . . . . 109
Floor Console . . . . . . . . . . . . . . . . .110
Glove Box . . . . . . . . . . . . . . . . . . . . 108
Instrument Panel . . . . . . . . . . . . . 108
Sunglasses . . . . . . . . . . . . . . . . . . . 109
Storage Compartments . . . . . . . . . 108
Stuck Vehicle . . . . . . . . . . . . . . . . . . . 249
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . 48
Sunglass Storage . . . . . . . . . . . . . . . 109
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Switches Airbag On-Off . . . . . . . . . . . . . . . . . . . 73
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3
System
Forward CollisionAlert (FCA) . . . . . . . . . . . . . . . . . . 293
Infotainment . . . . . . . . . . . . . 176, 470
Noise Control . . . . . . . . . . . . . . . . . 370
Systems Driver Assistance . . . . . . . . . . . . . 290
T
Tachometer . . . . . . . . . . . . . . . . . . . . . 125
Tailgate . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Taillamps
Bulb Replacement . . . . . . . . . . . . 374
Text Telephone (TTY) Users . . . . 460
Theft-Deterrent Systems . . . . . . . . . 40 Immobilizer . . . . . . . . . . . . . . . . . . . . . 40
Throttle, Adjustable . . . . . . . . . . . . . 258
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 383 All-Season . . . . . . . . . . . . . . . . . . . . 384
All-Terrain . . . . . . . . . . . . . . . . . . . . 385
Buying New Tires . . . . . . . . . . . . . 401
Chains . . . . . . . . . . . . . . . . . . . . . . . . 405
Changing . . . . . . . . . . . . . . . . . . . . . 408
Designations . . . . . . . . . . . . . . . . . 388
Different Size . . . . . . . . . . . . . . . . . 402
Full-Size Spare . . . . . . . . . . . . . . . 417
If a Tire Goes Flat . . . . . . . . . . . . 406
Inspection . . . . . . . . . . . . . . . . . . . . 397
Low Profile . . . . . . . . . . . . . . . . . . . 385
Messages . . . . . . . . . . . . . . . . . . . . 151
Pressure . . . . . . . . . . . . . . . . . . . . . . 393
Pressure Light . . . . . . . . . . . . . . . . 138
Pressure Monitor Operation . . 394
Pressure Monitor System . . . . . 393
Rotation . . . . . . . . . . . . . . . . . . . . . . 398
Sidewall Labeling . . . . . . . . . . . . . 385
Terminology and Definitions . . 389

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
492 Index
Tires (cont'd)Uniform Tire Quality
Grading . . . . . . . . . . . . . . . . . . . . . 403
Wheel Alignment and Tire
Balance . . . . . . . . . . . . . . . . . . . . . 404
Wheel Replacement . . . . . . . . . . 404
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 400
Winter . . . . . . . . . . . . . . . . . . . . . . . . 384
Tow/Haul Mode . . . . . . . . . . . . . . . . . 273
Tow/Haul Mode Light . . . . . . . . . . . 136
Towing Driving Characteristics . . . . . . . . 304
Equipment . . . . . . . . . . . . . . . . . . . . 324
General Information . . . . . . . . . . 304
Recreational Vehicle . . . . . . . . . . 423
Trailer . . . . . . . . . . . . . . . . . . . . . . . . 307
Trailer Sway Control (TSC) . . . 333
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 422
Traction Control System (TCS)/StabiliTrak
®Light . . . . . . . . . . . . 138
Off Light . . . . . . . . . . . . . . . . . . . . . . 137
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . 284
Trademarks and License Agreements . . . . . . . . . . . . . . . . . . . 225 Trailer
Sway Control (TSC) . . . . . . . . . . 333
Tow Mirrors . . . . . . . . . . . . . . . . . . . . . 41
Towing . . . . . . . . . . . . . . . . . . . . . . . . 307
Transfer Case . . . . . . . . . . . . . . . . . . 274
Transmission Automatic . . . . . . . . . . . . . . . . . . . . . 267
Fluid, Automatic . . . . . . . . . 352, 354
Messages . . . . . . . . . . . . . . . . . . . . 152
Temperature Gauge . . . . . . . . . . 128
Transportation Program,
Courtesy . . . . . . . . . . . . . . . . . . . . . . 463
Trip Odometer . . . . . . . . . . . . . . . . . . 125
Truck-Camper Loading Information . . . . . . . . . . . . . . . . . . . . 256
Turn and Lane-Change
Signals . . . . . . . . . . . . . . . . . . . . . . . . 170
Turn Signal Bulb Replacement . . . . . . . . . . . . 374
U
Uniform Tire Quality Grading . . . 403
Universal Remote System . . . . . . 162Operation . . . . . . . . . . . . . . . . . . . . . 164
Programming . . . . . . . . . . . . . . . . . 162
Updates
Software . . . . . . . . . . . . . . . . . . . . . . 184
USB Port . . . . . . . . . . . . . . . . . . 193, 196
Using This Manual . . . . . . . . . . . . . . . . 2
V
Vehicle Alarm System . . . . . . . . . . . . . . . . . . 38
Canadian Owners . . . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . 239
Identification Number (VIN) . . . 452
Load Limits . . . . . . . . . . . . . . . . . . . 250
Messages . . . . . . . . . . . . . . . . . . . . 144
Personalization . . . . . . . . . . . . . . . 155
Reminder Messages . . . . . . . . . . 153
Remote Start . . . . . . . . . . . . . . . . . . . 33
Security . . . . . . . . . . . . . . . . . . . . . . . . 38
Speed Messages . . . . . . . . . . . . . 154
Towing . . . . . . . . . . . . . . . . . . . . . . . . 422
Vehicle Ahead Indicator . . . . . . . . 137
Vehicle Care Tire Pressure . . . . . . . . . . . . . . . . . 391
Vehicle Data Recording and Privacy . . . . . . . . . . . . . . . . . . . . . . . . 469
Ventilation, Air . . . . . . . . . . . . . . . . . . 234
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Voice Recognition . . . . . . . . . . . . . . 204
Voltage Devices and Wiring . . . . 376
Voltmeter Gauge . . . . . . . . . . . . . . . 128