
Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
16263960) - 2023 - CRC - 2/23/22
Vehicle Care 275
FuseUsage
F20 CLOCK SPRING F21 OCC SEN
F22 DLC
F23 SDM
F24 IGN_SW/ESCL F25 PWR L-GATE MDL
F26 SEC FUSE-2 F27 PWR SEAT CO-DR
F28 VBAT_8
F29 DC-DC AT
F30 PWR L-GATE MDL F31 OSRVM
F32 FRT HS PWR-1
F33 VBAT_4
F34 FRT HS PWR-2 F35 AMPLIFIER
F36 ONSTAR (TCP) F37 PWR SEAT DR
F38 DC-DC_400W Fuse
Usage
F39 SEC FUSE-1
F40 HVAC_BLOWER
Circuit
Breaker Usage
CB1 N/A
CB2 APO
Relay Usage
K01 i-RAP_ACC
K02 RUN
K03 LOGISTICS
K04 N/A K05 N/A
K06 N/ARear Compartment Fuse Block
The rear compartment fuse block is behind a
cover on the driver side of the rear
compartment. To access the fuses, remove
the cover.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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290 Vehicle Care
Warning (Continued)
death. Only your dealer or authorized
tire service center should mount or
dismount the tires.
{Warning
Mixing tires of different sizes (other
than those originally installed on the
vehicle), brands, tread patterns,
or types may cause loss of vehicle
control, resulting in a crash or other
vehicle damage. Use the correct size,
brand, and type of tire on all wheels.
{Warning
Using bias-ply tires on the vehicle
may cause the wheel rim flanges to
develop cracks after many miles of
driving. A tire and/or wheel could fail
suddenly and cause a crash. Use only
radial-ply tires with the wheels on
the vehicle. 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. Never exceed the
winter tires’
maximum speed capability
when using winter tires with a lower
speed rating.
If the vehicle tires must be replaced
with a tire that does not have a TPC
Spec number, make sure they are the
same size, load range, speed rating, and
construction (radial) as the original
tires.
The Tire and Loading Information label
indicates the original equipment tires
on the vehicle. See Vehicle Load Limits
0 181.
Different Size Tires and Wheels
If wheels or tires are installed that are a
different size than the original equipment
wheels and tires, vehicle performance,
including its braking, ride and handling
characteristics, stability, and resistance to
rollover may be affected. If the vehicle has
electronic systems such as antilock brakes,
rollover airbags, traction control, electronic stability control, or All-Wheel Drive, the
performance of these systems can also be
affected.
{Warning
If different sized wheels are used, there
may not be an acceptable level of
performance and safety if tires not
recommended for those wheels are
selected. This increases the chance of a
crash and serious injury. Only use GM
specific wheel and tire systems developed
for the vehicle, and have them properly
installed by a GM certified technician.
See Buying New Tires 0289 and
Accessories and Modifications 0239.
Uniform Tire Quality Grading
The following information relates to the
system developed by the United States
National Highway Traffic Safety
Administration (NHTSA), which grades
tires by treadwear, traction, and
temperature performance. This applies
only to vehicles sold in the United
States. The grades are molded on the
sidewalls of most passenger car tires.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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294 Vehicle Care
If a tire goes flat, avoid further tire and
wheel damage by driving slowly to a level
place, well off the road, if possible. Turn on
the hazard warning flashers. SeeHazard
Warning Flashers 0115.
If your vehicle is loaded at or near
maximum cargo capacity, it may be difficult
to fit the jack under the vehicle due to the
environment (shoulder slope, road debris,
etc.). Removal of some weight may improve
the ability to fit the jack under the vehicle
at the correct jacking location.
{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 the vehicle in P (Park).
3. Turn the vehicle off and do not restart the vehicle while it is raised.
4. Do not allow passengers to remain in the vehicle.
(Continued)
Warning (Continued)
5. Place wheel blocks, if equipped, onboth sides of the tire at the opposite
corner of the tire being changed.
When the vehicle has a flat tire (2), use the
following example as a guide to assist in the
placement of the 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 Changing
Removing the Spare Tire and Tools
The spare tire and tools are located under
the load floor in the rear of the vehicle.
Without Subwoofer
1. Tow Eye
2. Jack
3. Wrench
4. Strap
5. Funnel

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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Vehicle Care 295
With Subwoofer
1. Tow Eye
2. Wrench
3. Jack
4. Strap
5. Wing Nut
To access the spare tire and tools: 1. Open the liftgate. See Liftgate024.2. Lift and move the load floor into the
holding slots. The load floor will stay in
the open position.
3. Turn the wing nut counterclockwise to remove the spare tire.
4. Remove the spare tire, jack, and tools and place them near 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 0293.
2. Turn the wheel wrench counterclockwise
to loosen the wheel nuts. Do not remove
them yet.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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296 Vehicle Care
3. Place the jack at the position markedwith a half circle.
4. Place the hex tube end of the wrenchover the hex head of the jack to
attach it.
5. Turn the wheel wrench clockwise until the lift head is firmly contacting the
proper lifting point nearest the flat tire.
{Warning
Getting under a vehicle when it is lifted
on a jack is dangerous. If the vehicle slips
off the jack, you could be badly injured
or killed. Never get under a vehicle when
it is supported only by a jack.
{Warning
Raising the vehicle with the jack
improperly positioned can damage the
vehicle and even make the vehicle fall. To
help avoid personal injury and vehicle
damage, be sure to fit the jack lift head
into the proper location before raising
the vehicle.
{Warning
Lifting a vehicle and getting under it to
do maintenance or repairs is dangerous
without the appropriate safety equipment
and training. If a jack is provided with
the vehicle, it is designed only for
changing a flat tire. If it is used for
anything else, you or others could be
badly injured or killed if the vehicle slips
off the jack. If a jack is provided with the
vehicle, only use it for changing a
flat tire.
6. Turn the wheel wrench clockwise to raise the vehicle far enough off the ground so
there is enough room for the spare tire
to fit underneath the wheel well. 7. Turn the wheel nuts counterclockwise to
remove them.
8. Remove the flat tire.
{Warning
Rust or dirt on a wheel, or on the
parts to which it is fastened, can
make wheel nuts become loose after
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 a paper towel can be used;
however, use a scraper or wire brush
later to remove all rust or dirt.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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Vehicle Care 297
9. Remove any rust or dirt from the wheelbolts, mounting surfaces, and spare
wheel.
10. Place the spare tire on the wheel-mounting surface.
{Warning
Never use oil or grease on bolts or nuts
because the nuts might come loose. The
vehicle's wheel could fall off, causing a
crash.
11. Reinstall the wheel nuts. Turn each nut clockwise, by hand, until the wheel is
held against the hub. 12. Lower the vehicle by turning the wheel
wrench counterclockwise. Lower the jack
completely.
{Warning
Wheel nuts that are improperly or
incorrectly tightened can cause the
wheels to become loose or come off. The
wheel nuts should be tightened with a
torque wrench to the proper torque
specification after replacing. Follow the
torque specification supplied by the
aftermarket manufacturer when using
accessory locking wheel nuts. See
Capacities and Specifications 0324 for
original equipment wheel nut torque
specifications.
Caution
Improperly tightened wheel nuts can lead
to brake pulsation and rotor damage. To
avoid expensive brake repairs, evenly
tighten the wheel nuts in the proper
sequence and to the proper torque
specification. See Capacities and
Specifications 0324 for the wheel nut
torque specification.
13. Tighten the wheel nuts firmly with the wheel wrench in a crisscross sequence, as
shown.
Caution
Wheel covers will not fit on the vehicle's
compact spare. If you try to put a wheel
cover on the compact spare, the cover or
the spare could be damaged.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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300 Vehicle Care
1. Discharged Battery Positive (+)Terminal
2. Discharged Battery Negative (–) Grounding Point
3. Good Battery Negative (–) Terminal
4. Good Battery Positive (+) Terminal
The discharged battery positive (+) terminal
is in the engine compartment on the driver
side of the vehicle.
The discharged battery negative (–)
grounding point is the engine block or an
engine mounting bolt. Connect to a spot as
far away from the discharged battery as
possible. The good battery negative (–) terminal and
good battery positive (+) terminal are on
the battery of the vehicle providing the
jump start.
The discharge battery positive (+) terminal is
under a trim cover. Open the cover to
expose the terminal.
1. Check the other vehicle. It must have a 12-volt battery with a negative ground
system.
Caution
If the other vehicle does not have a
12-volt system with a negative ground,
both vehicles can be damaged. Only use
a vehicle that has a 12-volt system with a
negative ground for jump starting.
2. Position the two vehicles so that they are not touching.
3. Set the parking brake firmly and put the shift lever in P (Park) with an automatic
transmission, or Neutral with a manual
transmission.
Caution
If any accessories are left on or plugged
in during the jump starting procedure,
they could be damaged. The repairs
would not be covered by the vehicle
warranty. Whenever possible, turn off or
unplug all accessories on either vehicle
when jump starting.
4. Turn the ignition off. Turn off all lights and accessories in both vehicles, except
the hazard warning flashers if needed.
{Warning
An electric fan can start up even when
the engine is not running and can injure
you. Keep hands, clothing, and tools
away from any underhood electric fan.
{Warning
Using a match near a battery can cause
battery gas to explode. People have been
hurt doing this, and some have been
blinded. Use a flashlight if you need
more light.
(Continued)

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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Vehicle Care 305
8. Disconnect the negative battery cable atthe battery. See “Negative Battery Cable
Disconnection” Battery - North America
0 257.
9. Cover the negative battery post with a non-conductive material to prevent any
contact with the negative battery
terminal.
Towing the Vehicle from the Rear
Caution
Towing the vehicle from the rear could
damage it. Also, repairs would not be
covered by the vehicle warranty. Never
have the vehicle towed from the rear.
Do not tow the vehicle from the rear.
Appearance Care
Exterior Care
Locks
Locks are lubricated at the factory. Use a
de-icing agent only when absolutely
necessary, and have the locks greased after
using. See Recommended Fluids and
Lubricants 0319.
Washing the Vehicle
To preserve the vehicle's finish, wash it
often and out of direct sunlight.
Caution
Do not use petroleum-based, acidic,
or abrasive cleaning agents as they can
damage the vehicle's paint, metal,
or plastic parts. If damage occurs, it
would not be covered by the vehicle
warranty. Approved cleaning products can
be obtained from your dealer. Follow all
manufacturer directions regarding correct
product usage, necessary safety
precautions, and appropriate disposal of
any vehicle care product.