wheel alignment GMC TERRAIN 2021 Owner's Manual

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
Vehicle Care 257
Vehicle Care
General Information
General Information . . . . . . . . . . . . . . . . . . . 258
California Proposition 65 Warning . . . . . 258
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . . . . . . 258
Accessories and Modifications . . . . . . . . . 258
Vehicle Checks
Doing Your Own Service Work . . . . . . . . 259
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Engine Compartment Overview . . . . . . . . 261
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Engine Oil Life System . . . . . . . . . . . . . . . . 264
Automatic Transmission Fluid . . . . . . . . . 265
Engine Air Filter Life System . . . . . . . . . . 265
Engine Air Cleaner/Filter . . . . . . . . . . . . . . 265
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . 267
Engine Overheating . . . . . . . . . . . . . . . . . . . 270
Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Battery - North America . . . . . . . . . . . . . . . 273
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . . . 274
Starter Switch Check . . . . . . . . . . . . . . . . . . 274
Park Brake and P (Park) Mechanism Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Wiper Blade Replacement . . . . . . . . . . . . . 275
Windshield Replacement . . . . . . . . . . . . . . 276 Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . . . . . . . 277
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . 277
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . 277
High Intensity Discharge (HID)
Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Front Turn Signal Lamps . . . . . . . . . . . . . . . 278
Taillamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
License Plate Lamp . . . . . . . . . . . . . . . . . . . . 279
Electrical System
Electrical System Overload . . . . . . . . . . . . 280
Fuses and Circuit Breakers . . . . . . . . . . . . 280
Engine Compartment Fuse Block . . . . . . . 281
Instrument Panel Fuse Block . . . . . . . . . . 284
Rear Compartment Fuse Block . . . . . . . . . 285
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . . 287
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Summer Tires . . . . . . . . . . . . . . . . . . . . . . . . . 288
Tire Sidewall Labeling . . . . . . . . . . . . . . . . . 288
Tire Designations . . . . . . . . . . . . . . . . . . . . . 290
Tire Terminology and Definitions . . . . . . 291
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . 293
Tire Pressure Monitor System . . . . . . . . . 294 Tire Pressure Monitor Operation . . . . . . 295
Tire Inspection . . . . . . . . . . . . . . . . . . . . . . . . 298
Tire Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . 298
When It Is Time for New Tires . . . . . . . . 299
Buying New Tires . . . . . . . . . . . . . . . . . . . . . 300
Different Size Tires and Wheels . . . . . . . 301
Uniform Tire Quality Grading . . . . . . . . . . 301
Wheel Alignment and Tire Balance . . . . 302
Wheel Replacement . . . . . . . . . . . . . . . . . . . 302
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303
If a Tire Goes Flat . . . . . . . . . . . . . . . . . . . . . 303
Tire Sealant and Compressor Kit . . . . . . 305
Storing the Tire Sealant and
Compressor Kit . . . . . . . . . . . . . . . . . . . . . . 310
Tire Changing . . . . . . . . . . . . . . . . . . . . . . . . . 310
Compact Spare Tire . . . . . . . . . . . . . . . . . . . . 315
Jump Starting
Jump Starting - North America . . . . . . . . 316
Towing the Vehicle
Towing the Vehicle . . . . . . . . . . . . . . . . . . . . 318
Recreational Vehicle Towing . . . . . . . . . . . 320
Appearance Care
Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . 322
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
298 Vehicle Care
9. Proceed to the passenger side rear tire,and repeat the procedure in Step 7.
10. Proceed to the driver side rear tire, and repeat the procedure in Step 7. The horn
sounds two times to indicate the sensor
identification code has been matched to
the driver side rear tire, and the TPMS
sensor matching process is no longer
active. The TIRE LEARNING ACTIVE
message on the DIC display goes off.
11. Turn the vehicle off.
12. Set all four tires to the recommended air pressure level as indicated on the Tire
and Loading Information label.
Tire Inspection
We recommend that the tires, including
the spare tire, if the vehicle has one, be
inspected for signs of wear or damage
at least once a month.
Replace the tire if:
.The indicators at three or more
places around the tire can be seen.
.There is cord or fabric showing
through the tire's rubber.
.The tread or sidewall is cracked, cut,
or snagged deep enough to show
cord or fabric.
.The tire has a bump, bulge, or split.
.The tire has a puncture, cut, or other
damage that cannot be repaired well
because of the size or location of the
damage.
Tire Rotation
Tires should be rotated every 12 000 km
(7,500 mi). See Maintenance Schedule
0 331.
Tires are rotated to achieve a more
uniform wear for all tires. The first
rotation is the most important.
Anytime unusual wear is noticed, rotate
the tires as soon as possible, check for
proper tire inflation pressure, and check
for damaged tires or wheels. If the
unusual wear continues after the
rotation, check the wheel alignment.
See When It Is Time for New Tires
0 299 and
Wheel Replacement 0302.
Use this rotation pattern when rotating
the tires.
Do not include the compact spare tire
in the tire rotation.
Adjust the front and rear tires to the
recommended inflation pressure on the
Tire and Loading Information label after
the tires have been rotated. See Tire
Pressure 0293 and
Vehicle Load Limits 0196.
Reset the Tire Pressure Monitor System.
See Tire Pressure Monitor Operation
0 295.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
302 Vehicle Care
conditions on a specified government
test course. For example, a tire graded
150 would wear one and one-half (1½)
times as well on the government course
as a tire graded 100. The relative
performance of tires depends upon the
actual conditions of their use, however,
and may depart significantly from the
norm due to variations in driving habits,
service practices and differences in road
characteristics and climate.
Traction
The traction grades, from highest to
lowest, are AA, A, B, and C. Those
grades represent the tire's ability to
stop on wet pavement as measured
under controlled conditions on specified
government test surfaces of asphalt and
concrete. A tire marked C may have
poor traction performance. Warning:
The traction grade assigned to this tire
is based on straight-ahead braking
traction tests, and does not include
acceleration, cornering, hydroplaning,
or peak traction characteristics.Temperature
The temperature grades are A (the
highest), B, and C, representing the
tire's resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled conditions
on a specified indoor laboratory test
wheel. Sustained high temperature can
cause the material of the tire to
degenerate and reduce tire life, and
excessive temperature can lead to
sudden tire failure. The grade C
corresponds to a level of performance
which all passenger car tires must meet
under the Federal Motor Safety
Standard No. 109. Grades B and A
represent higher levels of performance
on the laboratory test wheel than the
minimum required by law. Warning:
The temperature grade for this tire is
established for a tire that is properly
inflated and not overloaded. Excessive
speed, underinflation, or excessive
loading, either separately or in
combination, can cause heat buildup
and possible tire failure.Wheel Alignment and Tire
Balance
The tires and wheels were aligned and
balanced at the factory to provide the
longest tire life and best overall
performance. Adjustments to wheel
alignment and tire balancing are not
necessary on a regular basis. Consider an
alignment check if there is unusual tire wear
or the vehicle is significantly pulling to one
side or the other. Some slight pull to the
left or right, depending on the crown of the
road and/or other road surface variations
such as troughs or ruts, is normal. If the
vehicle is vibrating when driving on a
smooth road, the tires and wheels may
need to be rebalanced. See your dealer for
proper diagnosis.
Wheel Replacement
Replace any wheel that is bent, cracked,
or badly rusted or corroded. If wheel nuts
keep coming loose, the wheel, wheel bolts,
and wheel nuts should be replaced. If the
wheel leaks air, replace it. Some aluminum
wheels can be repaired. See your dealer if
any of these conditions exist.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
338 Service and Maintenance
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,
seeInterior Care 0326 and
Exterior Care 0322.
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-14420055) - 2021 - CRC - 11/13/20
374 Index
Storage Areas (cont'd)Center Console . . . . . . . . . . . . . . . . . . . . . . . . . 75
Convenience Net . . . . . . . . . . . . . . . . . . . . . . . . 76
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Roof Rack System . . . . . . . . . . . . . . . . . . . . . . . 76
Sunglasses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Storage Compartments . . . . . . . . . . . . . . . . . . . 74
Storing the Tire Sealant and
Compressor Kit . . . . . . . . . . . . . . . . . . . . . . . . . 310
Struts Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
Stuck Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Summer Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Sunglass Storage . . . . . . . . . . . . . . . . . . . . . . . . . 74
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
System Engine Air Filter Life . . . . . . . . . . . . . . . . . . . 265
Forward Collision Alert (FCA) . . . . . . . . . . . 237
Global Positioning . . . . . . . . . . . . . . . . . . . . . 148
Infotainment . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Roof Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Systems
Driver Assistance . . . . . . . . . . . . . . . . . . . . . . 231T
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Taillamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Teen Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Text Telephone (TTY) Users . . . . . . . . . . . . . . 348
Theft-Deterrent Systems . . . . . . . . . . . . . . . . . . .23Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287 All-Season . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
Buying New Tires . . . . . . . . . . . . . . . . . . . . . . 300
Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Compact Spare . . . . . . . . . . . . . . . . . . . . . . . . 315
Designations . . . . . . . . . . . . . . . . . . . . . . . . . . . 290
Different Size . . . . . . . . . . . . . . . . . . . . . . . . . . 301
If a Tire Goes Flat . . . . . . . . . . . . . . . . . . . . . 303
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298
Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
Pressure Light . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Pressure Monitor Operation . . . . . . . . . . . 295
Pressure Monitor System . . . . . . . . . . . . . . 294
Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298
Sealant and Compressor Kit . . . . . . . . . . . . 305
Sealant and Compressor Kit,
Storing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Sidewall Labeling . . . . . . . . . . . . . . . . . . . . . . 288
Terminology and Definitions . . . . . . . . . . . 291 Tires (cont'd)
Uniform Tire Quality Grading . . . . . . . . . . 301
Wheel Alignment and Tire Balance . . . . 302
Wheel Replacement . . . . . . . . . . . . . . . . . . . . 302
When It Is Time for New Tires . . . . . . . . . 299
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Tow/Haul Mode . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Tow/Haul Mode Light . . . . . . . . . . . . . . . . . . . . 96
Towing
Driving Characteristics . . . . . . . . . . . . . . . . . 249
Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
General Information . . . . . . . . . . . . . . . . . . . 248
Recreational Vehicle . . . . . . . . . . . . . . . . . . . 320
Trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 318
Traction Control System (TCS)/StabiliTrakLight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Off Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Traction Control/Electronic Stability
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .214
Trademarks and License Agreements . . . . . 169
Trailer Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Transmission
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Fluid, Automatic . . . . . . . . . . . . . . . . . . . . . . . 265

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/-
Mexico-14420055) - 2021 - CRC - 11/13/20
Index 375
Transportation Program, Courtesy . . . . . . . . 351
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Turn and Lane-Change Signals . . . . . . . . . . . . 119
U
Uniform Tire Quality Grading . . . . . . . . . . . . 301
Universal Remote System . . . . . . . . . . . . . . . . . 112Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Updates Map Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
USB Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134
Using the Navigation System . . . . . . . . . . . . .138
Using the System . . . . . . . . . . . . . . . . . . . . . . . . . 127
Using This Manual . . . . . . . . . . . . . . . . . . . . . . . . . .2
V
Vehicle Alarm System . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Canadian Owners . . . . . . . . . . . . . . . . . . . . . . . . . 1
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Identification Number (VIN) . . . . . . . . . . . . 342
Load Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Personalization . . . . . . . . . . . . . . . . . . . . . . . . 108
Remote Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Vehicle (cont'd)
Speed Messages . . . . . . . . . . . . . . . . . . . . . . . 108
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 318
Vehicle Ahead Indicator . . . . . . . . . . . . . . . . . . . 97
Vehicle Care Storing the Tire Sealant andCompressor Kit . . . . . . . . . . . . . . . . . . . . . . . 310
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
Vehicle Data Recording and Privacy . . . . . . 355
Vehicle Positioning . . . . . . . . . . . . . . . . . . . . . . 148
Ventilation, Air . . . . . . . . . . . . . . . . . . . . . . . . . . .182
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Voice Recognition . . . . . . . . . . . . . . . . . . . . . . . . 150
W
Warning Brake System Light . . . . . . . . . . . . . . . . . . . . . 95
Caution and Danger . . . . . . . . . . . . . . . . . . . . . 2
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Warnings Hazard Flashers . . . . . . . . . . . . . . . . . . . . . . . . . 119
Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
Wheels Alignment and Tire Balance . . . . . . . . . . . . 302
Different Size . . . . . . . . . . . . . . . . . . . . . . . . . . 301
Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . 302
When It Is Time for New Tires . . . . . . . . . . . 299 Where to Put the Restraint . . . . . . . . . . . . . . . 62
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Windshield Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
Wiper/Washer . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Winter
Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Winter Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Wiper Blade Replacement . . . . . . . . . . . . . . . . 275
Wipers Rear Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Wireless Charging . . . . . . . . . . . . . . . . . . . . . . . . 82