wheel alignment CHEVROLET BLAZER 2021 Owner's Manual

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
Vehicle Care 253
Vehicle Care
General Information
General Information . . . . . . . . . . . . . . . . . . . 254
California Proposition 65 Warning . . . . . 254
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . . . . . . 254
Accessories and Modifications . . . . . . . . . 254
Vehicle Checks
Doing Your Own Service Work . . . . . . . . . 255
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Engine Compartment Overview . . . . . . . . 257
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 . . . . . . . . . . . . . . . . . . . . 271
Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
Battery - North America . . . . . . . . . . . . . . . 274
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . . . 275
Automatic Transmission Shift Lock Control Function Check . . . . . . . . . . . . . . 275
Park Brake and P (Park) Mechanism Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Wiper Blade Replacement . . . . . . . . . . . . . 276 Windshield Replacement . . . . . . . . . . . . . . . 277
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . . . . . . . 278
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . 278
High Intensity Discharge (HID)
Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Back-Up Lamps . . . . . . . . . . . . . . . . . . . . . . . . 278
Electrical System
High Voltage Devices and Wiring . . . . . . 279
Electrical System Overload . . . . . . . . . . . . 279
Fuses and Circuit Breakers . . . . . . . . . . . . 280
Engine Compartment Fuse Block . . . . . . 280
Instrument Panel Fuse Block . . . . . . . . . . 284
Rear Compartment Fuse Block . . . . . . . . . 285
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . 288
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Summer Tires . . . . . . . . . . . . . . . . . . . . . . . . . 289
Tire Sidewall Labeling . . . . . . . . . . . . . . . . . 289
Tire Designations . . . . . . . . . . . . . . . . . . . . . . 291
Tire Terminology and Definitions . . . . . . 292
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . 294
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 295 Tire Pressure Monitor System . . . . . . . . . 296
Tire Pressure Monitor Operation . . . . . . 297
Tire Inspection . . . . . . . . . . . . . . . . . . . . . . . . 300
Tire Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . 300
When It Is Time for New Tires . . . . . . . . 301
Buying New Tires . . . . . . . . . . . . . . . . . . . . . 302
Different Size Tires and Wheels . . . . . . . 303
Uniform Tire Quality Grading . . . . . . . . . 303
Wheel Alignment and Tire Balance . . . . 305
Wheel Replacement . . . . . . . . . . . . . . . . . . . 305
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
If a Tire Goes Flat . . . . . . . . . . . . . . . . . . . . . 306
Tire Sealant and Compressor Kit . . . . . . . 307
Storing the Tire Sealant and
Compressor Kit . . . . . . . . . . . . . . . . . . . . . . . 313
Tire Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 313
Compact Spare Tire . . . . . . . . . . . . . . . . . . . . 317
Jump Starting
Jump Starting - North America . . . . . . . . 318
Towing the Vehicle
Towing the Vehicle . . . . . . . . . . . . . . . . . . . . 320
Recreational Vehicle Towing . . . . . . . . . . . 321
Appearance Care
Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
300 Vehicle Care
4. Use the DIC controls on the right side ofthe steering wheel to scroll to the Tire
Pressure screen under the DIC info page.
5. Press and hold
Vin the center of the
DIC controls.
The horn sounds twice to signal the
receiver is in relearn mode and the TIRE
LEARNING ACTIVE message displays on
the DIC display.
6. Start with the driver side front tire.
7. Place the relearn tool against the tire sidewall, near the valve stem. Then press
the button to activate the TPMS sensor.
A horn chirp confirms that the sensor
identification code has been matched to
this tire and wheel position.
8. Proceed to the passenger side front tire, and repeat the procedure in Step 7.
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
0 332.
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 0301
and
Wheel Replacement 0305.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
Vehicle Care 305
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.Your dealer will know the kind of wheel that
is needed.
Each new wheel should have the same
load-carrying capacity, diameter, width,
offset, and be mounted the same way as
the one it replaces.
Replace wheels, wheel bolts, wheel nuts,
or Tire Pressure Monitor System (TPMS)
sensors with new GM original equipment
parts.
{Warning
Using the wrong replacement wheels,
wheel bolts, or wheel nuts can be
dangerous. It could affect the braking and
handling of the vehicle. Tires can lose air,
and cause loss of control, causing a crash.
Always use the correct wheel, wheel
bolts, and wheel nuts for replacement.
Caution
The wrong wheel can also cause
problems with bearing life, brake cooling,
speedometer or odometer calibration,
headlamp aim, bumper height, vehicle
ground clearance, and tire or tire chain
clearance to the body and chassis.
Used Replacement Wheels
{Warning
Replacing a wheel with a used one is
dangerous. How it has been used or how
far it has been driven may be unknown.
It could fail suddenly and cause a crash.
When replacing wheels, use a new GM
original equipment wheel.
Tire Chains
{Warning
If the vehicle has 235/55R20 or 265/45R21
size tires, do not use tire chains. There is
not enough clearance. Tire chains used on
a vehicle without the proper amount of
clearance can cause damage to the
brakes, suspension, or other vehicle parts.
The area damaged by the tire chains
could cause loss of control and a crash.
Use another type of traction device only
if its manufacturer recommends it for the
vehicle's tire size combination and road
conditions. Follow that manufacturer's
instructions. To avoid vehicle damage,
drive slow and readjust or remove the
(Continued)

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
Service and Maintenance 339
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 0327 and
Exterior Care 0323.
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.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
Index 377
StrutsGas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
Stuck Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Summer Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Sunglass Storage . . . . . . . . . . . . . . . . . . . . . . . . . 76
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
System Engine Air Filter Life . . . . . . . . . . . . . . . . . . . 265
Forward Collision Alert (FCA) . . . . . . . . . . . 230
Global Positioning . . . . . . . . . . . . . . . . . . . . . 152
Infotainment . . . . . . . . . . . . . . . . . . . . . . . . . . . 359
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Roof Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Systems Driver Assistance . . . . . . . . . . . . . . . . . . . . . . 225
T
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Teen Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Text Telephone (TTY) Users . . . . . . . . . . . . . . . 351
Theft-Deterrent Systems . . . . . . . . . . . . . . . . . . 24Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
All-Season . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288 Tires (cont'd)
Buying New Tires . . . . . . . . . . . . . . . . . . . . . . 302
Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313
Compact Spare . . . . . . . . . . . . . . . . . . . . . . . . . 317
Designations . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
Different Size . . . . . . . . . . . . . . . . . . . . . . . . . . 303
If a Tire Goes Flat . . . . . . . . . . . . . . . . . . . . . 306
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . 294, 295
Pressure Light . . . . . . . . . . . . . . . . . . . . . . . . . 105
Pressure Monitor Operation . . . . . . . . . . . 297
Pressure Monitor System . . . . . . . . . . . . . . 296
Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
Sealant and Compressor Kit . . . . . . . . . . . . 307
Sealant and Compressor Kit,
Storing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313
Sidewall Labeling . . . . . . . . . . . . . . . . . . . . . . 289
Terminology and Definitions . . . . . . . . . . . 292
Uniform Tire Quality Grading . . . . . . . . . . 303
Wheel Alignment and Tire Balance . . . . 305
Wheel Replacement . . . . . . . . . . . . . . . . . . . . 305
When It Is Time for New Tires . . . . . . . . . 301
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Tow/Haul Mode . . . . . . . . . . . . . . . . . . . . . . . . . 210
Tow/Haul Mode Light . . . . . . . . . . . . . . . . . . . 103 Towing
Driving Characteristics . . . . . . . . . . . . . . . . . 242
Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
General Information . . . . . . . . . . . . . . . . . . . 242
Recreational Vehicle . . . . . . . . . . . . . . . . . . . 321
Trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Trailer Sway Control (TSC) . . . . . . . . . . . . . 251
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
Traction Control System (TCS)/StabiliTrakLight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Off Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Trademarks and License Agreements . . . . . . 173
Trailer Sway Control (TSC) . . . . . . . . . . . . . . . . . . . . 251
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Transmission Automatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Fluid, Automatic . . . . . . . . . . . . . . . . . . . . . . . 265
Transportation Program, Courtesy . . . . . . . 354
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Turn and Lane-Change Signals . . . . . . . . . . . .124
U
Uniform Tire Quality Grading . . . . . . . . . . . . 303
Universal Remote System . . . . . . . . . . . . . . . . . 117

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
378 Index
Universal Remote System (cont'd)Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Updates Map Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
USB Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Using the Navigation System . . . . . . . . . . . . .142
Using the System . . . . . . . . . . . . . . . . . . . . . . . . . 131
Using This Manual . . . . . . . . . . . . . . . . . . . . . . . . . .2
V
Vehicle
Alarm System . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Canadian Owners . . . . . . . . . . . . . . . . . . . . . . . . . 1
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Identification Number (VIN) . . . . . . . . . . . . 344
Load Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Personalization . . . . . . . . . . . . . . . . . . . . . . . . . 113
Remote Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Speed Messages . . . . . . . . . . . . . . . . . . . . . . . . 113
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
Vehicle Ahead Indicator . . . . . . . . . . . . . . . . . . 103
Vehicle Care Storing the Tire Sealant andCompressor Kit . . . . . . . . . . . . . . . . . . . . . . . 313 Vehicle Care (cont'd)
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
Vehicle Data Recording and Privacy . . . . . . 358
Vehicle Positioning . . . . . . . . . . . . . . . . . . . . . . . 152
Ventilation, Air . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Voice Recognition . . . . . . . . . . . . . . . . . . . . . . . . .154
Voltage Devices and Wiring . . . . . . . . . . . . . 279
Voltmeter Gauge . . . . . . . . . . . . . . . . . . . . . . . . . 97
W
Warning Brake System Light . . . . . . . . . . . . . . . . . . . . 101
Caution and Danger . . . . . . . . . . . . . . . . . . . . . 2
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Warnings
Hazard Flashers . . . . . . . . . . . . . . . . . . . . . . . . 124
Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Wheels Alignment and Tire Balance . . . . . . . . . . . . 305
Different Size . . . . . . . . . . . . . . . . . . . . . . . . . . 303
Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
When It Is Time for New Tires . . . . . . . . . . . 301
Where to Put the Restraint . . . . . . . . . . . . . . . 65
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Windshield
Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
Wiper/Washer . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Wiper Blade Replacement . . . . . . . . . . . . . . . . 276
Wipers Rear Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Wireless Charging . . . . . . . . . . . . . . . . . . . . . . . . 87
Wiring, High Voltage Devices . . . . . . . . . . . . 279