2021 CHEVROLET BLAZER change wheel

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
Vehicle Care 265
If the CHANGE ENGINE OIL SOON message
comes back on when the vehicle is started,
the engine oil life system has not been
reset. Repeat the procedure.
Automatic Transmission Fluid
It is not necessary to check the transmission
fluid level. A transmission fluid leak is the
only reason for fluid loss. If a leak occurs,
take the vehicle to the dealer and have it
repaired as soon as possible.
Change the fluid at the intervals listed in
Maintenance Schedule0332, and be sure to
use the transmission fluid listed in
Recommended Fluids and Lubricants 0340.
Caution
Use of the incorrect automatic
transmission fluid may damage the
vehicle, and the damage may not be
covered by the vehicle warranty. Always
use the correct automatic transmission
fluid. See Recommended Fluids and
Lubricants 0340.
If you need to check the transmission fluid
level, take the vehicle to your dealer.
Engine Air Filter Life System
If equipped, this feature provides the engine
air filter’s remaining life and best timing for
a change. The timing to change an engine
air filter depends on driving and
environmental conditions.
When to Change the Engine Air Filter
When the Driver Information Center (DIC)
displays a message to replace the engine air
filter at the next oil change, follow this
timing.
When the DIC displays a message to replace
the engine air filter soon, replace the engine
air filter at the earliest convenience.
The system must be reset after the engine
air filter is changed.
If the DIC displays a message to check the
engine air filter system, see your dealer.
How to Reset the Engine Air Filter Life
System
To reset: 1. Place the vehicle in P (Park). 2. Display the Air Filter Life on the DIC. See
Driver Information Center (DIC) (Base and
Midlevel) 0107 or
Driver Information Center (DIC) (Uplevel)
0 110.
3. Press
Tto move to the Reset/Disable
display area. Select Reset then press the
thumbwheel.
4. Press the thumbwheel to confirm the reset.
Engine Air Cleaner/Filter
The engine air cleaner/filter is in the engine
compartment. See Engine Compartment
Overview 0257.
When to Inspect the Engine Air Cleaner/
Filter
If the vehicle is not equipped with the
engine air filter life system, see
Maintenance Schedule 0332 for intervals on
inspecting and replacing the engine air
cleaner/filter.
How to Inspect/Replace the Engine Air
Cleaner/Filter
Do not start the engine or have the engine
running with the engine air cleaner/filter
housing open. Before removing the engine

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
Vehicle Care 273
Caution (Continued)
.When using concentrated washer fluid,
follow the manufacturer instructions
for adding water.
.Fill the washer fluid tank only
three-quarters full when it is very cold.
This allows for fluid expansion if
freezing occurs, which could damage
the tank if it is completely full.
Brakes
Disc brake linings have built-in wear
indicators that make a high-pitched warning
sound when the brake linings are worn and
new linings are needed. The sound can come
and go or can be heard all the time when
the vehicle is moving, except when applying
the brake pedal firmly.
{Warning
The brake wear warning sound means
that soon the brakes will not work well.
That could lead to a crash. When the
brake wear warning sound is heard, have
the vehicle serviced.
Caution
Continuing to drive with worn-out brake
linings could result in costly brake
repairs.
Some driving conditions or climates can
cause a brake squeal when the brakes are
first applied, clearing up following several
applications. This does not mean something
is wrong with the brakes.
Properly torqued wheel nuts are necessary
to help prevent brake pulsation. When tires
are rotated, inspect brake linings for wear
and evenly tighten wheel nuts in the proper
sequence to torque specifications. See
Capacities and Specifications 0345.
Brake pads should be replaced as complete
axle sets.
Brake Pedal Travel
See your dealer if the brake pedal does not
return to normal height, or if there is a
rapid increase in pedal travel. This could be
a sign that brake service may be required.
Replacing Brake System Parts
Always replace brake system parts with
new, approved replacement parts. If this is
not done, the brakes may not work
properly. The braking performance can
change in many ways if the wrong brake
parts are installed or if parts are improperly
installed.
Brake Fluid
The brake master cylinder reservoir is filled
with GM approved DOT 3 brake fluid as
indicated on the reservoir cap. See Engine
Compartment Overview 0257 for the
location of the reservoir.
Checking Brake Fluid
With the vehicle in P (Park) on a level
surface, the brake fluid level should be
between the minimum and maximum marks
on the brake fluid reservoir.
There are only two reasons why the brake
fluid level in the reservoir may go down:

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
Vehicle Care 289
With winter tires, there may be decreased
dry road traction, increased road noise, and
shorter tread life. After changing to winter
tires, be alert for changes in vehicle
handling and braking.
If using winter tires:
.Use tires of the same brand and tread
type on all four wheel positions.
.Use only radial ply tires of the same size,
load range, and speed rating as the
original equipment tires.
Winter tires with the same speed rating as
the original equipment tires may not be
available for H, V, W, Y, and ZR speed rated
tires. If winter tires with a lower speed
rating are chosen, never exceed the tire's
maximum speed capability.
Summer Tires
This vehicle may come with 235/55R20 high
performance summer tires. These tires have
a special tread and compound that are
optimized for maximum dry and wet road
performance. This special tread and
compound will have decreased performance
in cold climates, and on ice and snow. It is
recommended that winter tires be installed
on the vehicle if frequent driving at temperatures below approximately 5 °C
(40 °F) or on ice or snow covered roads is
expected. See
Winter Tires0288.
Caution
High performance summer tires have
rubber compounds that lose flexibility
and may develop surface cracks in the
tread area at temperatures below −7 °C
(20 °F). Always store high performance
summer tires indoors and at
temperatures above −7 °C (20 °F) when
not in use. If the tires have been
subjected to −7 °C (20 °F) or less, let them
warm up in a heated space to at least
5 °C (40 °F) for 24 hours or more before
being installed or driving a vehicle on
which they are installed. Do not apply
heat or blow heated air directly on the
tires. Always inspect tires before use. See
Tire Inspection 0300.
Tire Sidewall Labeling
Useful information about a tire is
molded into its sidewall. The examples
show a typical passenger vehicle tire
and a compact spare tire sidewall.
Passenger (P-Metric) Tire Example
(1) Tire Size:The tire size is a
combination of letters and numbers
used to define a particular tire's width,
height, aspect ratio, construction type,
and service description. See the “Tire
Size” illustration in this section.
(2) TPC Spec (Tire Performance Criteria
Specification)
:Original equipment tires
designed to GM's specific tire
performance criteria have a TPC
specification code molded onto the
sidewall. GM's TPC specifications meet
or exceed all federal safety guidelines.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
Vehicle Care 301
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. SeeTire
Pressure 0294 and
Vehicle Load Limits 0197.
Reset the Tire Pressure Monitor System.
See Tire Pressure Monitor Operation
0 297. Check that all wheel nuts are properly
tightened. See
“Wheel Nut Torque”
under Capacities and Specifications
0 345, and “Removing the Flat Tire and
Installing the Spare Tire” underTire
Changing 0313.
{Warning
Rust or dirt on a wheel, or on the
parts to which it is fastened, can
cause wheel nuts to become loose
over time. The wheel could come off
and cause a crash. When changing a
wheel, remove any rust or dirt from
places where the wheel attaches to
the vehicle. In an emergency, a cloth
or paper towel can be used; however,
use a scraper or wire brush later to
remove all rust or dirt.
Lightly coat the inner diameter of the
wheel hub opening with wheel bearing
grease after a wheel change or tire
rotation to prevent corrosion or rust
buildup.
{Warning
Do not apply grease to the wheel
mounting surface, wheel conical
seats, or the wheel nuts or bolts.
Grease applied to these areas could
cause a wheel to become loose or
come off, resulting in a crash.
When It Is Time for New Tires
Factors, such as maintenance, temperatures,
driving speeds, vehicle loading, and road
conditions affect the wear rate of the tires.
Treadwear indicators are one way to tell
when it is time for new tires. Treadwear
indicators appear when the tires have only

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
Vehicle Care 307
{Warning
Changing a tire can be dangerous. The
vehicle can slip off the jack and roll over
or fall causing injury or death. Find a
level place to change the tire. To help
prevent the vehicle from moving:1. Set the parking brake firmly.
2. Put an automatic transmission in P (Park) or a manual transmission in
1 (First) or R (Reverse).
3. Turn off the engine and do not restart while the vehicle is raised.
4. Do not allow passengers to remain in the vehicle.
5. Place wheel blocks, if equipped, on both sides of the tire at the opposite
corner of the tire being changed.
This vehicle may come with a jack and spare
tire or a tire sealant and compressor kit. To
use the jacking equipment to change a spare
tire safely, follow the instructions below.
Then see Tire Changing 0313. To use the
tire sealant and compressor kit, see Tire
Sealant and Compressor Kit 0307. When the vehicle has a flat tire (2), use the
following example as a guide to assist you
in the placement of wheel blocks (1),
if equipped.
1. Wheel Block (If Equipped)
2. Flat Tire
The following information explains how to
repair or change a tire.
Tire Sealant and Compressor Kit
{Warning
Idling a vehicle in an enclosed area with
poor ventilation is dangerous. Engine
exhaust may enter the vehicle. Engine
exhaust contains carbon monoxide (CO)
which cannot be seen or smelled. It can
cause unconsciousness and even death.
(Continued)
Warning (Continued)
Never run the engine in an enclosed area
that has no fresh air ventilation. For more
information, seeEngine Exhaust0207.
{Warning
Overinflating a tire could cause the tire
to rupture and you or others could be
injured. Be sure to read and follow the
tire sealant and compressor kit
instructions and inflate the tire to its
recommended pressure. Do not exceed
the recommended pressure.
{Warning
Storing the tire sealant and compressor
kit or other equipment in the passenger
compartment of the vehicle could cause
injury. In a sudden stop or collision, loose
equipment could strike someone. Store
the tire sealant and compressor kit in its
original location.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
Vehicle Care 313
Storing the Tire Sealant and
Compressor Kit
To store the tire sealant and compressor kit,
reverse the steps for removing it.
Tire Changing
Removing the Spare Tire and Tools
To access the spare tire and tools:1. Open the liftgate. See Liftgate018.
2. Remove the cargo management system divider, if equipped. See “Rail and Divider
Option” underCargo Management
System 079.
3. Lift the load floor. Use the hook to hold the load floor open. See Cargo
Management System 079.
4. Turn the wing nut (4) counterclockwise
to remove the jack (1), wheel wrench (2),
and strap (3). Place the tool container
near the tire being changed.
5. Remove the nut retaining the spare tire.
6. Remove the spare tire and place it nextto the tire being changed.
Removing the Flat Tire and Installing the
Spare Tire
1. Do a safety check before proceeding. SeeIf a Tire Goes Flat 0306.
2. Turn the wheel wrench counterclockwise
to loosen all the wheel nuts, but do not
remove them yet.
3. Place the jack near the flat tire.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
352 Customer Information
H:Manage your profile and payment
information. View your GM Rewards Card
earnings and My Chevrolet Rewards points.
F: Chat with online help representatives.
Visit my.chevrolet.com and create an
account today.
Chevrolet Owner Centre (Canada)
mychevrolet.ca
Visit the Chevrolet Owner Centre at
mychevrolet.ca (English) or my.chevrolet.ca
(French) to access similar benefits to the
U.S. site.
GM Mobility Reimbursement
Program
This program is available to qualified
applicants for cost reimbursement, up to
certain limits, of eligible aftermarket adaptive equipment required for the vehicle,
such as hand controls or a wheelchair/
scooter lift for the vehicle.
To learn about the GM Mobility program,
see www.gmmobility.com or call the GM
Mobility Assistance Center at 1-800-323-9935.
Text Telephone (TTY) users, call
1-800-833-9935.
General Motors of Canada also has a
Mobility program. See www.gm.ca, or call
1-800-GM-DRIVE (800-463-7483) for details.
TTY users call 1-800-263-3830.
Roadside Assistance Program
For U.S.-purchased vehicles, call
1-800-243-8872. (Text Telephone (TTY):
1-888-889-2438.)
For Canadian-purchased vehicles, call
1-800-268-6800.
Service is available 24 hours a day, 365 days
a year.
Calling for Assistance
When calling Roadside Assistance, have the
following information ready:
.Your name, home address, and home
telephone number
.Telephone number of your location
.Location of the vehicle
.Model, year, color, and license plate
number of the vehicle
.Odometer reading, Vehicle Identification
Number (VIN), and delivery date of the
vehicle
.Description of the problem
Coverage
Services are provided for the duration of the
vehicle’s powertrain warranty.
In the U.S., anyone driving the vehicle is
covered. In Canada, a person driving the
vehicle without permission from the owner
is not covered.
Roadside Assistance is not a part of the New
Vehicle Limited Warranty. General Motors
North America and Chevrolet reserve the
right to make any changes or discontinue
the Roadside Assistance program at any
time without notification.
General Motors North America and Chevrolet
reserve the right to limit services or
payment to an owner or driver if they
decide the claims are made too often, or the
same type of claim is made many times.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
368 Index
IndexA
Accessories and Modifications . . . . . . . . . . . 254
Accessory Power . . . . . . . . . . . . . . . . . . . . . . . . . 205
Active Fuel Management . . . . . . . . . . . . . . . . 206
Adaptive Cruise Control . . . . . . . . . . . . . . . . . . . 217
Add-On Electrical Equipment . . . . . . . . . . . . . 252
Additional InformationOnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361
Additional Maintenance and Care . . . . . . . . 337
Adjustments Lumbar, Front Seats . . . . . . . . . . . . . . . . . . . . 36
Agreements Trademarks and License . . . . . . . . . . . . . . . . 173
Air Cleaner/Filter, Engine . . . . . . . . . . . . . . . . 265
Air Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . .182
Air Filter
Life System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Air Filter, Passenger Compartment . . . . . . . 186
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
How Does an Airbag Restrain? . . . . . . . . . . 54
Passenger Sensing System . . . . . . . . . . . . . . 55
What Makes an Airbag Inflate? . . . . . . . . . 54
What Will You See after an AirbagInflates? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
When Should an Airbag Inflate? . . . . . . . . 53
Where Are the Airbags? . . . . . . . . . . . . . . . . 52 Airbags
Adding Equipment to the Vehicle . . . . . . . 59
Passenger Status Indicator . . . . . . . . . . . . . . 99
Readiness Light . . . . . . . . . . . . . . . . . . . . . . . . . 98
Servicing Airbag-Equipped Vehicles . . . . . . 58
System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Alarm
Vehicle Security . . . . . . . . . . . . . . . . . . . . . . . . 23
Alert Lane Change . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
Side Blind Zone (SBZA) . . . . . . . . . . . . . . . . . 236
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 288
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . 210, 275
AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134
Antenna Multi-band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Antilock Brake System (ABS) . . . . . . . . . . . . . 210 Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . 102
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
Apple CarPlay and Android Auto . . . . . . . . . 163
Armrest Storage . . . . . . . . . . . . . . . . . . . . . . . . . . .77
Assistance Program, Roadside . . . . . . . . . . . . 352
Assistance Systems for Driving . . . . . . . . . . 230
Assistance Systems for Parking and Backing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227