
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
OnStar 489
.Obtain the Wi-Fi®hotspot name
or SSID and password,
if equipped.
Press
Qto connect to an
Advisor to:
. Verify account information or
update contact information.
. Get driving directions.
. Receive a Diagnostic check of
the vehicle's key operating
systems.
. Receive Roadside Assistance.
. Manage Wi-Fi Settings,
if equipped.
Press
>to get a priority connection
to an OnStar Advisor available
24/7 to:
. Get help for an emergency.
. Be a Good Samaritan or
respond to an AMBER Alert.
. Get assistance in severe
weather or other crisis situations
and find evacuation routes.
OnStar Services
Emergency
Emergency Services require an
active, OnStar service plan
(excludes Basic Plan). With
Automatic Crash Response, built-in
sensors can automatically alert a
specially trained OnStar Advisor
who is immediately connected in to
the vehicle to help.
Press
>for a priority connection to
an OnStar Advisor who can contact
emergency service providers, direct
them to your exact location, and
relay important information.
With OnStar Crisis Assist, specially
trained Advisors are available
24 hours a day, 7 days a week, to
provide a central point of contact,
assistance, and information during a
crisis.
With Roadside Assistance, Advisors
can locate a nearby service provider
to help with a flat tire, a battery
jump, or an empty gas tank.
Security
If equipped, OnStar provides these
services:
. With Stolen Vehicle Assistance,
OnStar Advisors can use GPS to
pinpoint the vehicle and help
authorities quickly recover it.
. With Remote Ignition Block,
if equipped, OnStar can block
the engine from being restarted.
. With Stolen Vehicle Slowdown,
if equipped, OnStar can work
with law enforcement to
gradually slow the vehicle down.
Theft Alarm Notification
If equipped, if the doors are locked
and the vehicle alarm sounds, a
notification by text, e-mail, or phone
call will be sent. If the vehicle is
stolen, an OnStar Advisor can work
with authorities to recover the
vehicle.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
498 Index
IndexA
Accessories andModifications . . . . . . . . . . . . . . . . . . 357
Accessory Power . . . . . . . . . . . . . . . 277
Active Fuel Management
®. . . . . . 281
Add-On Electrical Equipment . . . 350
Adding a Snow Plow or Similar Equipment . . . . . . . . . . . . . 350
Additional Information OnStar
®. . . . . . . . . . . . . . . . . . . . . . 493
Additional Maintenance and Care . . . . . . . . . . . . . . . . . . . . . . 461
Adjustable Throttle and Brake Pedal . . . . . . . . . . . . . . . . . . . 273
Adjustments Lumbar, Front Seats . . . . . . . . . . . . 58
Agreements Trademarks and License . . . . . 238
Air Cleaner/Filter, Engine . . . . . . . 371
Air Conditioning . . . . . .243, 245, 246
Air Filter, Passenger
Compartment . . . . . . . . . . . . . . . . . 250
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 250
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . 87
How Does an AirbagRestrain? . . . . . . . . . . . . . . . . . . . . . 77
Passenger Sensing System . . . . 81 Airbag System (cont'd)
What Makes an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 77
What Will You See after an
Airbag Inflates? . . . . . . . . . . . . . . . 78
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 75
Where Are the Airbags? . . . . . . . . 74
Airbags
Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . . . 86
Light On-Off . . . . . . . . . . . . . . . . . . 141
On-Off Light . . . . . . . . . . . . . . . . . . 141
On-Off Switch . . . . . . . . . . . . . . . . . . 79
Passenger Status Indicator . . . 143
Readiness Light . . . . . . . . . . . . . . 141
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . 85
System Check . . . . . . . . . . . . . . . . . . 73
Alarm Vehicle Security . . . . . . . . . . . . . . . . 43
All-Season Tires . . . . . . . . . . . . . . . . 401
All-Terrain Tires . . . . . . . . . . . . . . . . . 402
AM-FM Radio . . . . . . . . . . . . . . 197, 199
Antenna Fixed Mast . . . . . . . . . . . . . . . . . . . 203
Multi-band . . . . . . . . . . . . . . . . . . . . 203
Antilock Brake System (ABS) . . . 297

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
Index 507
RecordsMaintenance . . . . . . . . . . . . . . . . . . 468
Recreational Vehicle Towing . . . . 440
Reimbursement Program, GM Mobility . . . . . . . . . . . . . . . . . . . 478
Remote Keyless Entry (RKE) System . . . . . . . . . . . . . . . . . . . . . . . . . 36
Remote Vehicle Start . . . . . . . . . . . . 38
Replacement Glass . . . . . . . . . . . . . . . . . . . . . . . . . 389
Replacement Bulbs . . . . . . . . . . . . . 392
Replacement Parts
Airbags . . . . . . . . . . . . . . . . . . . . . . . . . 87
Maintenance . . . . . . . . . . . . . . . . . . 466
Replacing Airbag System . . . . . . . . 87
Replacing LATCH System Parts after a Crash . . . . . . . . . . . . 106
Replacing Safety Belt System Parts after a Crash . . . . . . . . . . . . . 72
Reporting Safety Defects Canadian Government . . . . . . . . 485
General Motors . . . . . . . . . . . . . . . 485
U.S. Government . . . . . . . . . . . . . 484
Restraints Where to Put . . . . . . . . . . . . . . . . . . . 93
Retained Accessory Power (RAP) . . . . . . . . . . . . . . . . . . 277
Reverse Tilt Mirrors . . . . . . . . . . . . . . 50 Ride Control Systems
Messages . . . . . . . . . . . . . . . . . . . . 161
Roads Driving, Wet . . . . . . . . . . . . . . . . . . 261
Roadside Assistance Program . . . . . . . . . . . . . . . . . . . . . . . 478
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . 53
Rotation, Tires . . . . . . . . . . . . . . . . . . 415
Routing, Engine Drive Belt . . . . . . 473
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . . . 282
S
Safety Belts . . . . . . . . . . . . . . . . . . . . . 65Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Extender . . . . . . . . . . . . . . . . . . . . . . . . 71
How to Wear Safety BeltsProperly . . . . . . . . . . . . . . . . . . . . . . . 66
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . . 71
Lap-Shoulder Belt . . . . . . . . . . . . . . 67
Messages . . . . . . . . . . . . . . . . . . . . 163
Reminders . . . . . . . . . . . . . . . . . . . . 140
Replacing after a Crash . . . . . . . . 72
Use During Pregnancy . . . . . . . . . . 70
Safety Defects Reporting
Canadian Government . . . . . . . . 485
General Motors . . . . . . . . . . . . . . . 485 Safety Defects Reporting (cont'd)
U.S. Government . . . . . . . . . . . . . 484
Safety Locks . . . . . . . . . . . . . . . . . . . . . 41
Safety System Check . . . . . . . . . . . . 71
Satellite Radio . . . . . . . . . . . . . 200, 201
Scheduling Appointments . . . . . . . 480
Seats Adjustment, Front . . . . . . . . . . . . . . . 57
Center Seat . . . . . . . . . . . . . . . . . . . . 57
Head Restraints . . . . . . . . . . . . . . . . 56
Heated and Ventilated Front . . . . 62
Lumbar Adjustment, Front . . . . . . 58
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 60
Power Adjustment, Front . . . . . . . 58
Rear . . . . . . . . . . . . . . . . . . . . . . . . 63, 64
Reclining Seatbacks . . . . . . . . . . . . 59
Securing Child Restraints . . . . . . . . . . . . . . . . 106, 110
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Messages . . . . . . . . . . . . . . . . . . . . 163
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 489
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 43
Vehicle Alarm . . . . . . . . . . . . . . . . . . . 43
Service . . . . . . . . . . . . . . . . . . . . . . . . . 251 Accessories andModifications . . . . . . . . . . . . . . . . 357

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
Index 509
Tires (cont'd)Full-Size Spare . . . . . . . . . . . . . . . 434
If a Tire Goes Flat . . . . . . . . . . . . 423
Inspection . . . . . . . . . . . . . . . . . . . . 414
Low Profile . . . . . . . . . . . . . . . . . . . 402
Messages . . . . . . . . . . . . . . . . . . . . 164
Pressure . . . . . . . . . . . . . . . . . 408, 410
Pressure Light . . . . . . . . . . . . . . . . 150
Pressure Monitor Operation . . .411
Pressure Monitor System . . . . . 410
Rotation . . . . . . . . . . . . . . . . . . . . . . 415
Sidewall Labeling . . . . . . . . . . . . . 402
Terminology and Definitions . . 406
Uniform Tire Quality
Grading . . . . . . . . . . . . . . . . . . . . . 420
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 421
Wheel Replacement . . . . . . . . . . 421
When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . . . 417
Winter . . . . . . . . . . . . . . . . . . . . . . . . 401
Tow/Haul Mode . . . . . . . . . . . . . . . . . 288
Tow/Haul Mode Light . . . . . . . . . . . 147
Towing Driving Characteristics . . . . . . . . 320
Equipment . . . . . . . . . . . . . . . . . . . . 340
General Information . . . . . . . . . . 320
Recreational Vehicle . . . . . . . . . . 440 Towing (cont'd)
Trailer . . . . . . . . . . . . . . . . . . . . . . . . 323
Trailer Sway Control (TSC) . . . 349
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 439
Traction Control System (TCS)/StabiliTrak
®Light . . . . . . . . . . . . 149
Off Light . . . . . . . . . . . . . . . . . . . . . . 148
Traction Control/Electronic
Stability Control . . . . . . . . . . . . . . . 299
Trademarks and License Agreements . . . . . . . . . . . . . . . . . . . 238
Trailer Sway Control (TSC) . . . . . . . . . . 349
Tow Mirrors . . . . . . . . . . . . . . . . . . . . . 46
Towing . . . . . . . . . . . . . . . . . . . . . . . . 323
Transfer Case . . . . . . . . . . . . . . . . . . 289
Transmission Automatic . . . . . . . . . . . . . . . . . . . . . 283
Fluid, Automatic . . . . . . . . . 368, 371
Messages . . . . . . . . . . . . . . . . . . . . 164
Temperature Gauge . . . . . . . . . . 139
Transportation Program,
Courtesy . . . . . . . . . . . . . . . . . . . . . . 480
Trip Odometer . . . . . . . . . . . . . . . . . . 136
Truck-Camper Loading Information . . . . . . . . . . . . . . . . . . . . 271 Turn and Lane-Change
Signals . . . . . . . . . . . . . . . . . . . . . . . . 182
Turn Signal Bulb Replacement . . . . . . . . . . . . 390
U
Uniform Tire Quality Grading . . . 420
Universal Remote System . . . . . . 174Operation . . . . . . . . . . . . . . . . . . . . . 176
Programming . . . . . . . . . . . . . . . . . 174
Updates Software . . . . . . . . . . . . . . . . . . . . . . 197
USB Port . . . . . . . . . . . . . . . . . . 206, 208
Using This Manual . . . . . . . . . . . . . . . . 2
V
Vehicle Alarm System . . . . . . . . . . . . . . . . . . 43
Canadian Owners . . . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . 254
Identification Number (VIN) . . . 469
Load Limits . . . . . . . . . . . . . . . . . . . 265
Messages . . . . . . . . . . . . . . . . . . . . 157
Personalization . . . . . . . . . . . . . . . 167
Reminder Messages . . . . . . . . . . 166
Remote Start . . . . . . . . . . . . . . . . . . . 38
Security . . . . . . . . . . . . . . . . . . . . . . . . 43
Speed Messages . . . . . . . . . . . . . 167