2023 CHEVROLET TRAILBLAZER check transmission fluid

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
16263960) - 2023 - CRC - 2/23/22
178 Driving and Operating
warning clues—such as enough water,
ice, or packed snow on the road to make
a mirrored surface —and slow down
when you have any doubt.
.Try to avoid sudden steering, acceleration,
or braking, including reducing vehicle
speed by shifting to a lower gear. Any
sudden changes could cause the tires to
slide.
Remember: Antilock brakes help avoid only
the braking skid.
Driving on Wet Roads
Rain and wet roads can reduce vehicle
traction and affect your ability to stop and
accelerate. Always drive slower in these
types of driving conditions and avoid driving
through large puddles and deep-standing or
flowing water.
{Warning
Wet brakes can cause crashes. They
might not work as well in a quick stop
and could cause pulling to one side. You
could lose control of the vehicle. (Continued)
Warning (Continued)
After driving through a large puddle of
water or a car/vehicle wash, lightly apply
the brake pedal until the brakes work
normally.
Flowing or rushing water creates strong
forces. Driving through flowing water
could cause the vehicle to be carried
away. If this happens, you and other
vehicle occupants could drown. Do not
ignore police warnings and be very
cautious about trying to drive through
flowing water.
Hydroplaning
Hydroplaning is dangerous. Water can build
up under the vehicle's tires so they actually
ride on the water. This can happen if the
road is wet enough and you are going fast
enough. When the vehicle is hydroplaning, it
has little or no contact with the road.
There is no hard and fast rule about
hydroplaning. The best advice is to slow
down when the road is wet.
Other Rainy Weather Tips
Besides slowing down, other wet weather
driving tips include:
.Allow extra following distance.
.Pass with caution.
.Keep windshield wiping equipment in
good shape.
.Keep the windshield washer fluid reservoir
filled.
.Have good tires with proper tread depth.
SeeTires 0276.
.Turn off cruise control.
.Activate All-Wheel Drive (AWD) mode. See
Driver Mode Control 0202.
Hill and Mountain Roads
Driving on steep hills or through mountains
is different than driving on flat or rolling
terrain. Tips include:
.Keep the vehicle serviced and in good
shape.
.Check all fluid levels and brakes, tires,
cooling system, and transmission.
.Shift to a lower gear when going down
steep or long hills.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
16263960) - 2023 - CRC - 2/23/22
Driving and Operating 231
Make wider turns than normal when towing,
so trailer will not go over soft shoulders,
over curbs, or strike road signs, trees,
or other objects. Always signal turns well in
advance. Do not steer or brake suddenly.
Driving on Grades
Reduce speed and shift to a lower gear
before starting down a long or steep
downhill grade. If the transmission is not
shifted down, the brakes may overheat and
result in reduced braking efficiency.
The vehicle can tow in D (Drive). Shift the
transmission to a lower gear if the
transmission shifts too often under heavy
loads and/or hilly conditions.
When towing at higher altitudes, engine
coolant will boil at a lower temperature
than at lower altitudes. If the engine is
turned off immediately after towing at high
altitude on steep uphill grades, the vehicle
could show signs similar to engine
overheating. To avoid this, let the engine
run, preferably on level ground, with the
transmission in P (Park) for a few minutes
before turning the engine off. If the
overheat warning comes on, seeEngine
Overheating 0254.
Parking on Hills
{Warning
To prevent serious injury or death,
always park your vehicle and trailer on a
level surface when possible.
When parking your vehicle and your trailer
on a hill: 1. Press the brake pedal, but do not shift into P (Park) yet. Turn the wheels into
the curb if facing downhill or into traffic
if facing uphill.
2. Have someone place chocks under the trailer wheels.
3. When the wheel chocks are in place, gradually release the brake pedal to
allow the chocks to absorb the load of
the trailer.
4. Reapply the brake pedal. Then apply the parking brake and shift into P (Park).
5. Release the brake pedal.
Leaving After Parking on a Hill
1. Apply and hold the brake pedal.
.Start the engine.
.Shift into a gear.
.Release the parking brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the chocks.
Maintenance When Trailer Towing
The vehicle needs service more often when
used to tow trailers. See Maintenance
Schedule 0315. It is especially important to
check the automatic transmission fluid,
engine oil, axle lubricant, belts, cooling
system, and brake system before and during
each trip.
Check periodically that all nuts and bolts on
the trailer hitch are tight.
Engine Cooling When Trailer Towing
The cooling system may temporarily
overheat during severe operating conditions.
See Engine Overheating 0254.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
16263960) - 2023 - CRC - 2/23/22
238 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . . . . . . . . . . . . . . 239
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . . . . . . 239
Accessories and Modifications . . . . . . . . . 239
Vehicle Checks
Doing Your Own Service Work . . . . . . . . 240
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Engine Compartment Overview . . . . . . . . 242
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Engine Oil Life System . . . . . . . . . . . . . . . . 247
Automatic Transmission Fluid . . . . . . . . . 248
Engine Air Filter Life System . . . . . . . . . . 248
Engine Air Cleaner/Filter . . . . . . . . . . . . . . 248
Cooling System . . . . . . . . . . . . . . . . . . . . . . . 250
Engine Overheating . . . . . . . . . . . . . . . . . . . 254
Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256
Battery - North America . . . . . . . . . . . . . . . 257
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . . . 258
Starter Switch Check . . . . . . . . . . . . . . . . . . 259
Automatic Transmission Shift Lock Control Function Check . . . . . . . . . . . . . . 259
Park Brake and P (Park) Mechanism Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259 Wiper Blade Replacement . . . . . . . . . . . . . 260
Windshield Replacement . . . . . . . . . . . . . . . 261
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . . . . . . . 262
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . 262
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . 262
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Headlamps, Front Turn Signal,
Sidemarker, and Parking Lamps (Base
Level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Headlamps, Front Turn Signal, Sidemarker, and Parking Lamps
(Uplevel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Fog Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Taillamps, Turn Signal, Sidemarker, Stoplamps, and Back-Up Lamps (Base
Level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Taillamps, Turn Signal, Sidemarker, Stoplamps, and Back-Up Lamps
(Uplevel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Electrical System
Electrical System Overload . . . . . . . . . . . . 269
Fuses and Circuit Breakers . . . . . . . . . . . . . 270
Where To Find Fuse Maps for YourVehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270 Engine Compartment Fuse Block . . . . . . . 271
Instrument Panel Fuse Block . . . . . . . . . . . 273
Rear Compartment Fuse Block . . . . . . . . . 275
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . . 277
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
Tire Sidewall Labeling . . . . . . . . . . . . . . . . . 278
Tire Designations . . . . . . . . . . . . . . . . . . . . . . 279
Tire Terminology and Definitions . . . . . 280
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Tire Pressure Monitor System . . . . . . . . . 283
Tire Pressure Monitor Operation . . . . . . 284
Tire Inspection . . . . . . . . . . . . . . . . . . . . . . . . 287
Tire Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . 287
When It Is Time for New Tires . . . . . . . . 288
Buying New Tires . . . . . . . . . . . . . . . . . . . . . 289
Different Size Tires and Wheels . . . . . . . 290
Uniform Tire Quality Grading . . . . . . . . . 290
Wheel Alignment and Tire Balance . . . . 292
Wheel Replacement . . . . . . . . . . . . . . . . . . . 292
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
If a Tire Goes Flat . . . . . . . . . . . . . . . . . . . . . 293
Tire Changing . . . . . . . . . . . . . . . . . . . . . . . . . 294
Compact Spare Tire . . . . . . . . . . . . . . . . . . . 298
Jump Starting
Jump Starting - North America . . . . . . . . 299

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
16263960) - 2023 - CRC - 2/23/22
248 Vehicle Care
The oil life system can also be reset as
follows:1. Display remaining OIL LIFE on the DIC with the engine off. See Driver
Information Center (DIC) (Base Level)
0 106 or
Driver Information Center (DIC) (Uplevel)
0 108.
2. Fully press and release the accelerator pedal three times within five seconds.
3. If the display changes to 100%, the system is reset
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
How to Check 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 your dealer and have it
repaired as soon as possible. There is a special procedure for checking and
changing the transmission fluid. Because this
procedure is difficult, you should have this
done at your dealer.
Change the fluid at the intervals listed in
Maintenance Schedule
0315, and be sure to
use the fluid listed in Recommended Fluids
and Lubricants 0319.
Engine Air Filter Life System
It 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. Select Air Filter Life on the DIC menu. See Driver Information Center (DIC) (Base
Level) 0106 or
Driver Information Center (DIC) (Uplevel)
0 108.
3. Press
lor the thumbwheel to move to
the Reset/Disable display area. Select
Reset then press
lor press the
thumbwheel for several seconds.
4. Press
lor the thumbwheel to confirm
the reset.
Engine Air Cleaner/Filter
The engine air cleaner/filter is in the engine
compartment on the passenger side of the
vehicle. See Engine Compartment Overview
0 242.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
16263960) - 2023 - CRC - 2/23/22
Service and Maintenance 317
suitable service maintenance intervals for
your vehicle, please contact your
authorized GM Dealer.
Extreme service is for vehicles mainly
driven off-road in four-wheel drive or used
in farming, mining, forestry, or snow
plowing.
Additional Required Services—Severe
Service
Every 72 000 km (45,000 mi)
.Change automatic transmission fluid and
filter.
Every 75 000 km (120,000 mi)
.Change rear axle fluid, if equipped with
AWD. Do not directly power wash the
transfer case and/or front/rear axle
output seals. High pressure water can
overcome the seals and contaminate the
transfer case fluid. Contaminated fluid will
decrease the life of the transfer case and/
or axles and should be replaced.
Owner Checks and Services
Every Five Years
.Replace brake fluid every five years. See
Brake Fluid 0256. Every Seven Years
.Replace Air Conditioning Desiccant every
seven years. The air conditioning system
requires maintenance every seven years.
This service requires replacement of the
desiccant to help the longevity and
efficient operation of the air conditioning
system. This service can be complex. See
your dealer.
Multi-Point Vehicle
Inspection (MPVI)
A Multi Point Vehicle Inspection (MPVI)
completed by a GM dealer technician is a
maintenance assessment of your vehicle.
The benefit of the MPVI is to identify and
inform the customer of service items that
require immediate attention and those that
may require attention in the future.
The technician will perform the following
checks on your vehicle. For a complete list
of checks, inspections, and services, see your
dealer.
Some items may not apply to your vehicle
and/or region.
Diagnostics
.OnStar active, if equipped
.Service history/recall check
Engine Oil and Filter
.Engine oil
.Oil life monitor
‐
Reset oil life monitor
Exterior Lights
.Visual inspection
Windshield and Wipers
.Visual inspection
Battery
.Battery visual inspection
.Battery test results
.Battery cables and connections
Systems, Fluids, and Visible Leak
Inspection
.Engine oil
.Transmission
.Drive axle
.Transfer case
.Engine cooling system
.Power steering, if equipped

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
16263960) - 2023 - CRC - 2/23/22
Technical Data 325
ApplicationCapacities
Metric English
Transfer Case Fluid 0.23 L 0.24 qt
Wheel Nut Torque 140 Y100 lb ft
All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this manual. Recheck fluid level
after filling.
*Engine cooling system capacity values are based on the entire cooling system and its components.
Engine Specifications
Engine VIN CodeTransmission Spark Plug Gap
1.2L L3 Gas Engine (LIH) 2Automatic 0.6 - 0.7 mm
1.3L L3 Gas Engine (L3T) LAutomatic 0.65 - 0.75 mm
Spark plug gaps are preset by the manufacturer. Re-gapping the spark plug is not recommended and can damage the spark plug.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
16263960) - 2023 - CRC - 2/23/22
348 Index
Apple CarPlay and Android Auto . . . . . . . . . . 151
ArmrestRear Seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Assistance Program, Roadside . . . . . . . . . . . . 330
Assistance Systems Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Parking and Backing . . . . . . . . . . . . . . . . . . . 215
Audio Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Automatic Climate Control System . . . . . . . . . . . . . . . . 169
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Emergency Braking (AEB) . . . . . . . . . . . . . . 219
Headlamp System . . . . . . . . . . . . . . . . . . . . . . 114
Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Transmission Fluid . . . . . . . . . . . . . . . . . . . . . 248
Transmission Shift Lock Control
Function Check . . . . . . . . . . . . . . . . . . . . . . . 259
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . 196
Auxiliary
Jack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Avoiding Untrusted Media Devices . . . . . . . . 127B
Battery Exterior Lighting Battery Saver . . . . . . . . . 118
Load Management . . . . . . . . . . . . . . . . . . . . . . 118
Power Protection . . . . . . . . . . . . . . . . . . . . . . . 118
Battery - North America . . . . . . . . . . . . 257, 299
Blade Replacement, Wiper . . . . . . . . . . . . . . . 260
Bluetooth Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 147, 148
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256
System Warning Light . . . . . . . . . . . . . . . . . 100
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Brake Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Electric Brake Boost . . . . . . . . . . . . . . . . . . . . 198
Electric Parking Brake . . . . . . . . . . . . . . . . . . 198
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Automatic Emergency (AEB) . . . . . . . . . . . 219
Braking System Front Pedestrian (FPB) . . . . . . . . . . . . . . . . . 220
Break-In, New Vehicle . . . . . . . . . . . . . . . . . . . . 184
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . . . 262 Fog Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . 262
Headlamp Aiming . . . . . . . . . . . . . . . . . . . . . . 262 Bulb Replacement (cont'd)
Headlamps, Front Turn Signal,
Sidemarker, and Parking
Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . 262, 263
Taillamps, Turn Signal, Sidemarker, Stoplamps, and
Backup Lamps . . . . . . . . . . . . . . . . . . . 264, 267
Buying New Tires . . . . . . . . . . . . . . . . . . . . . . . . 289
C
Calibration Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . . . . . . 239
California Proposition 65 Warning . . . . . 1, 299
Camera Rear Vision (RVC) . . . . . . . . . . . . . . . . . . . . . . 215
Canadian Vehicle Owners . . . . . . . . . . . . . . . . . . .2
Capacities and Specifications . . . . . . . . . . . . . 324
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . . . . . . . . . . 194
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . . 179
Cargo Management System . . . . . . . . . . . . . . . . . . . 83
Tie-Downs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Caution, Danger, and Warning . . . . . . . . . . . . . .3