
GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
360 Service and Maintenance
of leaking, blown seals,
or damage, and can advise
when service is needed.
Tires
Tires need to be properly inflated,
rotated, and balanced. Maintaining
the tires can save money and fuel,
and can reduce the risk of tire
failure.
. Signs that the tires need to be
replaced include three or more
visible treadwear indicators; cord
or fabric showing through the
rubber; cracks or cuts in the
tread or sidewall; or a bulge or
split in the tire.
. Trained dealer technicians can
inspect and recommend the right
tires. Your dealer can also
provide tire/wheel balancing
services to ensure smooth
vehicle operation at all speeds.
Your dealer sells and services
name brand tires. Vehicle Care
To help keep the vehicle looking like
new, vehicle care products are
available from your dealer. For
information on how to clean and
protect the vehicle’s interior and
exterior, see
Interior Care 0346 and
Exterior Care 0341.
Wheel Alignment
Wheel alignment is critical for
ensuring that the tires deliver
optimal wear and performance.
. Signs that the alignment may
need to be adjusted include
pulling, improper vehicle
handling, or unusual tire wear.
. Your dealer has the required
equipment to ensure proper
wheel alignment.
Windshield
For safety, appearance, and the
best viewing, keep the windshield
clean and clear.
. Signs of damage include
scratches, cracks, and chips. .
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 Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
374 Customer Information
.Lock-Out Service: Service to
unlock the vehicle if you are
locked out. A remote unlock may
be available if you have OnStar.
For security reasons, the driver
must present identification
before this service is given.
. Emergency Tow from a Public
Road or Highway: Tow to the
nearest GMC dealer for warranty
service, or if the vehicle was in a
crash and cannot be driven.
Assistance is not given when the
vehicle is stuck in the sand,
mud, or snow.
. Flat Tire Change: Service to
change a flat tire with the spare
tire. The spare tire, if equipped,
must be in good condition and
properly inflated. It is the owner's
responsibility for the repair or
replacement of the tire if it is not
covered by the warranty.
. Battery Jump Start: Service to
jump start a dead battery.
. Trip Interruption Benefits and
Assistance: If your trip is
interrupted due to a warranty event, incidental expenses may
be reimbursed within the
Powertrain warranty period.
Items considered are reasonable
and customary hotel, meals,
rental car, or a vehicle being
delivered back to the customer,
up to 500 miles.
Services Not Included in
Roadside Assistance
.
Impound towing caused by
violation of any laws
. Legal fines
. Mounting, dismounting,
or changing of snow tires,
chains, or other traction devices
Service is not provided if a vehicle
is in an area that is not accessible
to the service vehicle or is not a
regularly traveled or maintained
public road, which includes ice and
winter roads. Off-road use is not
covered.
Services Specific to
Canadian-Purchased Vehicles
. Fuel Delivery: Reimbursement
is up to 7 L. Diesel fuel delivery
may be restricted. Propane and
other fuels are not provided
through this service.
. Lock-Out Service: Vehicle
registration is required.
. Trip Interruption Benefits and
Assistance: Must be over
150 km from where your trip was
started to qualify.
Pre-authorization, original
detailed receipts, and a copy of
the repair orders are required.
Once authorization has been
received, the Roadside
Assistance advisor will help to
make arrangements and explain
how to receive payment.
. Alternative Service: If
assistance cannot be provided
right away, the Roadside
Assistance advisor may give
permission to get local
emergency road service. You will
receive payment, up to $100,

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
384 OnStar
Press=to:
. Open the OnStar app on the
infotainment display. See the
infotainment manual for
information on how to use the
OnStar app.
Or
. Make a call, end a call,
or answer an incoming call.
. Give OnStar Hands-Free Calling
voice commands.
. Give OnStar Turn-by-Turn
Navigation voice commands.
. Obtain and customize 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.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
Index 395
IndexA
About Driving the Vehicle . . . . . . . . . 2
Accessories andModifications . . . . . . . . . . . . . . . . . . 261
Accessory Power . . . . . . . . . . . . . . . 192
Add-On Electrical Equipment . . . 257
Additional Information
OnStar . . . . . . . . . . . . . . . . . . . . . . . 389
Additional Maintenance and Care . . . . . . . . . . . . . . . . . . . . . . 358
Adjustments Lumbar, Front Seats . . . . . . . . . . . . 59
Air Cleaner/Filter, Engine . . . . . . . 274
Air Conditioning . . . . . . . . . . . 160, 162
Air Filter, Passenger Compartment . . . . . . . . . . . . . . . . . 165
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 165
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . 87
How Does an Airbag
Restrain? . . . . . . . . . . . . . . . . . . . . . 80
Passenger Sensing System . . . . 82
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 80
What Will You See after an Airbag Inflates? . . . . . . . . . . . . . . . 81
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 79 Airbag System (cont'd)
Where Are the Airbags? . . . . . . . . 78
Airbags Adding Equipment to the
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . 86
Passenger Status Indicator . . . 126
Readiness Light . . . . . . . . . . . . . . 126
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . 86
System Check . . . . . . . . . . . . . . . . . . 76
Alarm Vehicle Security . . . . . . . . . . . . . . . . 46
Alert Lane Change . . . . . . . . . . . . . . . . . 232
Side Blind Zone (SBZA) . . . . . . 232
All-Season Tires . . . . . . . . . . . . . . . . 301
All-Wheel Drive . . . . . . . . . . . . 209, 285
Antilock Brake System (ABS) . . . 210 Warning Light . . . . . . . . . . . . . . . . . 131
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . 341
Interior . . . . . . . . . . . . . . . . . . . . . . . . 346
Assistance Program,
Roadside . . . . . . . . . . . . . . . . . . . . . . 373
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . . 228
Assistance Systems for Parking and Backing . . . . . . . . . . 223

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
398 Index
Driving (cont'd)Hill and Mountain Roads . . . . . . 179
If the Vehicle is Stuck . . . . . . . . . 180
Loss of Control . . . . . . . . . . . . . . . 173
Off-Road . . . . . . . . . . . . . . . . . . . . . 174
Off-Road Recovery . . . . . . . . . . . 173
Vehicle Load Limits . . . . . . . . . . . 181
Wet Roads . . . . . . . . . . . . . . . . . . . 178
Winter . . . . . . . . . . . . . . . . . . . . . . . . 179
Driving the Vehicle . . . . . . . . . . . . . . . . 2
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . 162
E
Electric Parking Brake . . . . . . . . . . 210
Electric Parking Brake Light . . . . 130
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 257
Electrical System
Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 293
Fuses and Circuit Breakers . . . 292
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 296
Overload . . . . . . . . . . . . . . . . . . . . . 292
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 298 Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . 384
Engine Air Cleaner/Filter . . . . . . . . . . . . . 274
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 127
Compartment Overview . . . . . . . 264
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 124
Cooling System . . . . . . . . . . . . . . . 276
Drive Belt Routing . . . . . . . . . . . . 368
Exhaust . . . . . . . . . . . . . . . . . . . . . . 196
Heater . . . . . . . . . . . . . . . . . . . . . . . . 191
Oil Life System . . . . . . . . . . . . . . . 273
Oil Pressure Light . . . . . . . . . . . . 133
Overheating . . . . . . . . . . . . . . . . . . 280
Power Messages . . . . . . . . . . . . . 142
Running While Parked . . . . . . . . 197
Starting . . . . . . . . . . . . . . . . . . . . . . . 188
Engines Diesel Fuel . . . . . . . . . . . . . . . . . . . 238
Entry Lighting . . . . . . . . . . . . . . . . . . . 157
Equipment, Towing . . . . . . . . . . . . . 256
Event Data Recorders . . . . . . . . . . 381
Exhaust Fluid Diesel . . . . . . . . . . . . . . . . . . . . . . . . 198
Exit Lighting . . . . . . . . . . . . . . . . . . . . 157
Extended Parking . . . . . . . . . . . . . . . 196 Extender, Seat Belt . . . . . . . . . . . . . . 74
Exterior Lamp Controls . . . . . . . . . 151
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . 158
F
FeaturesMemory . . . . . . . . . . . . . . . . . . . . . . . . . 13
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197 Replacement (Fuel) . . . . . . . . . . . 246
Filter, Engine Air Cleaner . . . . . . . . . . . 274
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 153
Flashers, Hazard Warning . . . . . . 154
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 320 Changing . . . . . . . . . . . . . . . . . . . . . 329
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 349
Fluid
Automatic Transmission . . . . . . 274
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 283
Diesel Exhaust . . . . . . . . . . . . . . . . . 27
Washer . . . . . . . . . . . . . . . . . . . . . . . 282
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 155
Folding Mirrors . . . . . . . . . . . . . . . . . . 49
Folding Seatback . . . . . . . . . . . . . . . . 64
Forward Automatic Braking . . . . . 231
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . 228

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
404 Index
Side Blind Zone Alert (SBZA) . . . 232
Signals, Turn andLane-Change . . . . . . . . . . . . . . . . . 155
Spare Tire Compact . . . . . . . . . . . . . . . . . . . . . . 334
Special Application Services . . . . 358
Specifications and Capacities . . . . . . . . . . . . . . . . . . . . . 366
Speedometer . . . . . . . . . . . . . . . . . . . 123
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . . . 132
Start Assist, Hill . . . . . . . . . . . . . . . . . 212
Start Vehicle, Remote . . . . . . . . . . . 35
Starter Switch Check . . . . . . . . . . . 285
Starting the Engine . . . . . . . . . . . . . 188
Steering . . . . . . . . . . . . . . . . . . . . . . . . 172 Heated Wheel . . . . . . . . . . . . . . . . . 111
Wheel Adjustment . . . . . . . . . . . . . 111
Wheel Controls . . . . . . . . . . . . . . . . 111
Storage Areas Cargo Cover . . . . . . . . . . . . . . . . . . 107
Center Console . . . . . . . . . . . . . . . 106
Convenience Net . . . . . . . . . . . . . 108
Glove Box . . . . . . . . . . . . . . . . . . . . 106
Roof Rack System . . . . . . . . . . . . 108
Storage Compartments . . . . . . . . . 106 Storing the Tire Sealant and
Compressor Kit . . . . . . . . . . . . . . . 328
Struts Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
Stuck Vehicle . . . . . . . . . . . . . . . . . . . 180
Summer Tires . . . . . . . . . . . . . . . . . . 302
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . 52
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3
System Forward Collision
Alert (FCA) . . . . . . . . . . . . . . . . . . 228
Infotainment . . . . . . . . . . . . . 159, 382
Roof Rack . . . . . . . . . . . . . . . . . . . . 108
Systems Driver Assistance . . . . . . . . . . . . . 222
T
Tachometer . . . . . . . . . . . . . . . . . . . . . 123
Taillamps . . . . . . . . . . . . . . . . . . . . . . . 290
Text Telephone (TTY) Users . . . . 372
Theft-Deterrent Systems . . . . . . . . . 48
Immobilizer . . . . . . . . . . . . . . . . . . . . . 47
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 All-Season . . . . . . . . . . . . . . . . . . . . 301
Buying New Tires . . . . . . . . . . . . . 315 Tires (cont'd)
Chains . . . . . . . . . . . . . . . . . . . . . . . . 320
Changing . . . . . . . . . . . . . . . . . . . . . 329
Compact Spare . . . . . . . . . . . . . . . 334
Designations . . . . . . . . . . . . . . . . . 304
Different Size . . . . . . . . . . . . . . . . . 317
If a Tire Goes Flat . . . . . . . . . . . . 320
Inspection . . . . . . . . . . . . . . . . . . . . 313
Pressure . . . . . . . . . . . . . . . . . . . . . . 307
Pressure Light . . . . . . . . . . . . . . . . 133
Pressure Monitor Operation . . 310
Pressure Monitor System . . . . . 309
Rotation . . . . . . . . . . . . . . . . . . . . . . 314
Sealant and
Compressor Kit . . . . . . . . . . . . . 322
Sealant and Compressor Kit, Storing . . . . . . . . . . . . . . . . . . 328
Sidewall Labeling . . . . . . . . . . . . . 302
Terminology and Definitions . . 305
Uniform Tire Quality
Grading . . . . . . . . . . . . . . . . . . . . . 317
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 319
Wheel Replacement . . . . . . . . . . 319
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 315