cooling CHEVROLET BLAZER 2022 Owners Manual

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15165663) - 2022 - CRC - 4/27/21
Lighting 129
Rear Reading Lamps
The rear reading lamps are over the rear
seats or over the rear passenger doors.
Press the lamp lens to turn the rear
passenger reading lamps on or off.
Lighting Features
Entry Lighting
The interior lamps turn on when pressingK
on the Remote Keyless Entry (RKE)
transmitter or opening any doors, and the
dome lamp control is in the DOOR position.
Some exterior lamps also turn on when
pressing
Kon the RKE transmitter or
opening any doors. Low-Beam lamps will
only turn on briefly at night, or in areas
with limited lighting. All lamps will gradually fade out after about
30 seconds.
Entry lighting can be disabled manually by
closing all doors, pressing
Qon the RKE
transmitter, or starting the vehicle.
This feature can be changed. See “Vehicle
Locator Lights” underVehicle Personalization
0 117.
Exit Lighting
Some exterior lamps and interior lamps turn
on when the key is removed from the
ignition.
The exterior and interior lamps remain on
for a set amount of time, then automatically
turn off. If equipped with Keyless Access,
the exterior lamps automatically turn on
when the driver door is opened after the
ignition is turned off.
The interior lights turn on when the ignition
is turned off.
The exterior lamps turn off immediately by
turning the exterior lamp control off.
This feature can be changed. See Vehicle
Personalization 0117.
Battery Load Management
The vehicle has Electric Power Management
(EPM) that estimates the battery's
temperature and state of charge. It then
adjusts the voltage for best performance
and extended life of the battery.
When the battery's state of charge is low,
the voltage is raised slightly to quickly bring
the charge back up. When the state of
charge is high, the voltage is lowered
slightly to prevent overcharging. If the
vehicle has a voltmeter gauge or a voltage
display on the Driver Information Center
(DIC), you may see the voltage move up or
down. This is normal. If there is a problem,
an alert will be displayed.
The battery can be discharged at idle if the
electrical loads are very high. This is true for
all vehicles. This is because the generator
(alternator) may not be spinning fast
enough at idle to produce all of the power
needed for very high electrical loads.
A high electrical load occurs when several of
the following are on, such as: headlamps,
high beams, rear window defogger, climate
control fan at high speed, heated seats,
engine cooling fans, trailer loads, and loads
plugged into accessory power outlets.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15165663) - 2022 - CRC - 4/27/21
186 Climate Controls
Climate Controls
Climate Control Systems
Dual Automatic Climate ControlSystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Maintenance
Passenger Compartment Air Filter . . . . . 190
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Climate Control Systems
Dual Automatic Climate Control System
The heating, cooling, and ventilation for the vehicle can be controlled with this system.
1. Driver and Passenger Temperature Controls
2. Air Delivery Mode Controls
3.
O(Power)
4. SYNC (Synchronized Temperature)
5. AUTO (Automatic Operation)
6. A/C (Air Conditioning) 7. Recirculation
8. Driver and Passenger Heated and
Ventilated Seats (If Equipped)
9. Defrost
10. Rear Window Defogger
11. Fan Control

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15165663) - 2022 - CRC - 4/27/21
198 Driving and Operating
.Hidden obstacles can make the steepness
of the incline more severe. If a rock is
driven across with the uphill wheels, or if
the downhill wheels drop into a rut or
depression, the vehicle can tilt even more.
.If an incline must be driven across, and
the vehicle starts to slide, turn downhill.
This should help straighten out the
vehicle and prevent the side slipping.
{Warning
Getting out of the vehicle on the
downhill side when stopped across an
incline is dangerous. If the vehicle rolls
over, you could be crushed or killed.
Always get out on the uphill side of the
vehicle and stay well clear of the
rollover path.
Driving in Mud, Sand, Snow, or Ice
Use a low gear when driving in mud—the
deeper the mud, the lower the gear. Keep
the vehicle moving to avoid getting stuck.
Traction changes when driving on sand. On
loose sand, such as on beaches or sand
dunes, the tires tend to sink into the sand. This affects steering, accelerating, and
braking. Drive at a reduced speed and avoid
sharp turns or abrupt maneuvers.
Traction is reduced on hard packed snow
and ice and it is easy to lose control. Reduce
vehicle speed when driving on hard packed
snow and ice.
{Warning
Driving on frozen lakes, ponds, or rivers
can be dangerous. Ice conditions vary
greatly and the vehicle could fall through
the ice; you and your passengers could
drown. Drive your vehicle on safe
surfaces only.
Driving in Water
{Warning
Driving through rushing water can be
dangerous. Deep water can sweep your
vehicle downstream and you and your
passengers could drown. If it is only
shallow water, it can still wash away the
ground from under your tires. Traction
could be lost, and the vehicle could roll
over. Do not drive through rushing water.
Caution
Do not drive through standing water if it
is deep enough to cover the wheel hubs,
axles, or exhaust pipe. Deep water can
damage the axle and other vehicle parts.
If the standing water is not too deep, drive
through it slowly. At faster speeds, water
can get into the engine and cause it to stall.
Stalling can occur if the exhaust pipe is
under water. Do not turn off the ignition
when driving through water. If the exhaust
pipe is under water, the engine will not
start. When going through water, the brakes
get wet, and it might take longer to stop.
See Driving on Wet Roads 0199.
After Off-Road Driving
Remove any brush or debris that has
collected on the underbody or chassis,
or under the hood. These accumulations can
be a fire hazard.
After operation in mud or sand, have the
brake linings cleaned and checked. These
substances can cause glazing and uneven
braking. Check the body structure, steering,
suspension, wheels, tires, and exhaust
system for damage and check the fuel lines
and cooling system for any leakage.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15165663) - 2022 - CRC - 4/27/21
Driving and Operating 199
More frequent maintenance service is
required. SeeMaintenance Schedule 0339.
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.
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
(Continued)
Warning (Continued)
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 0293.
.Turn off cruise control.
.Activate All-Wheel Drive (AWD) mode. See
Driver Mode Control 0219.
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.
{Warning
Using the brakes to slow the vehicle on a
long downhill slope can cause brake
overheating, can reduce brake
performance, and could result in a loss of
braking. Shift the transmission to a lower
gear to let the engine assist the brakes
on a steep downhill slope.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15165663) - 2022 - CRC - 4/27/21
250 Driving and Operating
When parking the vehicle and 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 the Maintenance
Schedule 0339. It is especially important to
check the 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 0274.
Trailer Towing
Caution
Towing a trailer improperly can damage
the vehicle and result in costly repairs
not covered by the vehicle warranty. To
tow a trailer correctly, follow the
directions in this section and see your
dealer for important information about
towing a trailer with the vehicle.
Trailer Weight
{Warning
Never exceed the towing capacity for
your vehicle.
Safe trailering requires monitoring the
weight, speed, altitude, road grades, outside
temperature, dimensions of the front of the
trailer, and how frequently the vehicle is
used to tow a trailer.
Trailer Weight Ratings
When towing a trailer, the combined weight
of the vehicle, vehicle contents, trailer, and
trailer contents must be below all of the
maximum weight ratings for the vehicle,
including:
.GCWR: Gross Combined Weight Rating
.GVWR: Gross Vehicle Weight Rating
.Maximum Trailer Weight Rating
.Maximum Trailer Tongue Weight Rating
See “Weight-Distributing Hitch Adjustment”
under Towing Equipment 0254 to determine
if equalizer bars are required to obtain the
maximum trailer weight rating.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15165663) - 2022 - CRC - 4/27/21
Vehicle Care 259
Vehicle Care
General Information
General Information . . . . . . . . . . . . . . . . . . 260
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . . . . . 260
Accessories and Modifications . . . . . . . . . 260
Vehicle Checks
Doing Your Own Service Work . . . . . . . . . 261
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Engine Compartment Overview . . . . . . . . 263
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
Engine Oil Life System . . . . . . . . . . . . . . . . 268
Automatic Transmission Fluid . . . . . . . . . 269
Engine Air Filter Life System . . . . . . . . . . 269
Engine Air Cleaner/Filter . . . . . . . . . . . . . . 270
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . 271
Engine Overheating . . . . . . . . . . . . . . . . . . . 274
Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
Battery - North America . . . . . . . . . . . . . . . 278
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . . . 278
Automatic Transmission Shift Lock Control Function Check . . . . . . . . . . . . . . 278
Park Brake and P (Park) Mechanism Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279 Wiper Blade Replacement . . . . . . . . . . . . . 279
Windshield Replacement . . . . . . . . . . . . . . 280
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . . . . . . . 281
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . 281
High Intensity Discharge (HID)
Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Back-Up Lamps . . . . . . . . . . . . . . . . . . . . . . . . 282
Electrical System
High Voltage Devices and Wiring . . . . . . 282
Electrical System Overload . . . . . . . . . . . . 282
Fuses and Circuit Breakers . . . . . . . . . . . . . 284
Engine Compartment Fuse Block . . . . . . 285
Instrument Panel Fuse Block . . . . . . . . . . 288
Rear Compartment Fuse Block . . . . . . . . 290
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . 293
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
Summer Tires . . . . . . . . . . . . . . . . . . . . . . . . . 294
Tire Sidewall Labeling . . . . . . . . . . . . . . . . . 294
Tire Designations . . . . . . . . . . . . . . . . . . . . . . 296
Tire Terminology and Definitions . . . . . . 297
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . 299 Tire Pressure for High-Speed
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
Tire Pressure Monitor System . . . . . . . . . 301
Tire Pressure Monitor Operation . . . . . . 302
Tire Inspection . . . . . . . . . . . . . . . . . . . . . . . . 305
Tire Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . 305
When It Is Time for New Tires . . . . . . . . 306
Buying New Tires . . . . . . . . . . . . . . . . . . . . . 307
Different Size Tires and Wheels . . . . . . . 308
Uniform Tire Quality Grading . . . . . . . . . 308
Wheel Alignment and Tire Balance . . . . 310
Wheel Replacement . . . . . . . . . . . . . . . . . . . 310
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
If a Tire Goes Flat . . . . . . . . . . . . . . . . . . . . . . 311
Tire Sealant and Compressor Kit . . . . . . . 312
Storing the Tire Sealant and Compressor Kit . . . . . . . . . . . . . . . . . . . . . . 318
Tire Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 318
Compact Spare Tire . . . . . . . . . . . . . . . . . . . . 322
Jump Starting
Jump Starting - North America . . . . . . . . 323
Towing the Vehicle
Towing the Vehicle . . . . . . . . . . . . . . . . . . . . 325
Recreational Vehicle Towing . . . . . . . . . . . 326
Appearance Care
Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . 329
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15165663) - 2022 - CRC - 4/27/21
264 Vehicle Care
1.Engine Air Cleaner/Filter 0270.
2. Engine Oil Fill Cap. See Engine Oil0266.
3. Engine Oil Dipstick. See Engine Oil0266.
4. Engine Cooling Fan (Out of View). See Cooling System 0271.
5. Brake Fluid Reservoir. See Brake Fluid
0 277.
6. Battery - North America 0278.
7. Engine Coolant Surge Tank and Pressure Cap. See Cooling System 0271.
8. Positive (+) Battery Terminal (Under Cover). See Jump Starting - North
America 0323.
9. Windshield Washer Fluid Reservoir. See Washer Fluid 0275.
10. Engine Compartment Fuse Block 0285.
11. Remote Negative (-) Battery Terminal. SeeJump Starting - North America 0323.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15165663) - 2022 - CRC - 4/27/21
266 Vehicle Care
1.Engine Air Cleaner/Filter 0270.
2. Engine Oil Fill Cap. See Engine Oil0266.
3. Engine Oil Dipstick. See Engine Oil0266.
4. Engine Cooling Fan (Out of View). See Cooling System 0271.
5. Brake Fluid Reservoir. See Brake Fluid
0 277.
6. Battery - North America 0278.
7. Engine Coolant Surge Tank and Pressure Cap. See Cooling System 0271.
8. Positive (+) Battery Terminal. See Jump
Starting - North America 0323.
9. Windshield Washer Fluid Reservoir. See Washer Fluid 0275.
10. Engine Compartment Fuse Block 0285.
11. Remote Negative (-) Battery Terminal. SeeJump Starting - North America 0323.Engine Oil
To ensure proper engine performance and
long life, careful attention must be paid to
engine oil. Following these simple, but
important steps will help protect your
investment:
.Use engine oil approved to the proper
specification and of the proper viscosity
grade. See “Selecting the Right Engine
Oil” in this section.
.Check the engine oil level regularly and
maintain the proper oil level. See
“Checking Engine Oil” and“When to Add
Engine Oil” in this section.
.Change the engine oil at the appropriate
time. SeeEngine Oil Life System 0268.
.Always dispose of engine oil properly. See
“What to Do with Used Oil” in this
section.
Checking Engine Oil
Check the engine oil level regularly, every
650 km (400 mi), especially prior to a long
trip. The engine oil dipstick handle is a loop.
See Engine Compartment Overview 0263 for
the location.
{Warning
The engine oil dipstick handle may be
hot; it could burn you. Use a towel or
glove to touch the dipstick handle.
If a low oil Driver Information Center (DIC)
message displays, check the oil level.
Follow these guidelines:
.To get an accurate reading, park the
vehicle on level ground. Check the engine
oil level after the engine has been off for
at least two hours. Checking the engine
oil level on steep grades or too soon after
engine shutoff can result in incorrect
readings. Accuracy improves when
checking a cold engine prior to starting.
Remove the dipstick and check the level.
.If unable to wait two hours, the engine
must be off for at least 15 minutes if the
engine is warm, or at least 30 minutes if
the engine is not warm. Pull out the
dipstick, wipe it with a clean paper towel
or cloth, then push it back in all the way.
Remove it again, keeping the tip down,
and check the level.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15165663) - 2022 - CRC - 4/27/21
Vehicle Care 271
1. Remove the five screws on top of theengine air cleaner/filter cover.
2. Lift and remove the engine air cleaner/ filter cover.
3. Pull out the air cleaner/filter.
4. Inspect or replace the engine air cleaner/ filter.
5. Reverse Steps 1–3 to reinstall the engine air cleaner/filter cover.
6. If equipped, reset the engine air filter life system after replacing the engine air
filter. See Engine Air Filter Life System
0 269.
{Warning
Operating the engine with the air
cleaner/filter off can cause you or others
to be burned. Use caution when working
on the engine. Do not start the engine or
drive the vehicle with the air cleaner/
filter off, as flames may be present if the
engine backfires.
Caution
If the air cleaner/filter is off, dirt can
easily get into the engine, which could
damage it. Always have the air cleaner/
filter in place when driving.
Cooling System
The cooling system allows the engine to
maintain the correct working temperature.
2.0L L4 Engine
1. Engine Cooling Fan (Out of View)
2. Engine Coolant Surge Tank and
Pressure Cap
3.6L V6 Engine
1. Engine Cooling Fan (Out of View)
2. Engine Coolant Surge Tank andPressure Cap
{Warning
An underhood electric fan can start up
even when the engine is not running and
can cause injury. Keep hands, clothing,
and tools away from any underhood
electric fan.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15165663) - 2022 - CRC - 4/27/21
272 Vehicle Care
{Warning
Do not touch heater or radiator hoses,
or other engine parts. They can be very
hot and can burn you. Do not run the
engine if there is a leak; all coolant could
leak out. That could cause an engine fire
and can burn you. Fix any leak before
driving the vehicle.
Engine Coolant
The cooling system in the vehicle is filled
with DEX-COOL engine coolant. This coolant
needs to be checked and replaced at
appropriate intervals. SeeMaintenance
Schedule 0339.
The following explains the cooling system
and how to check and add coolant when it
is low. If there is a problem with engine
overheating, see Engine Overheating 0274.
What to Use
{Warning
Do not touch heater or radiator hoses,
or other engine parts. They can be very
hot and can burn you. Do not run the
(Continued)
Warning (Continued)
engine if there is a leak; all coolant could
leak out. That could cause an engine fire
and can burn you. Fix any leak before
driving the vehicle.
Use a 50/50 mixture of clean, drinkable
water and DEX-COOL coolant. This mixture:
.Gives freezing protection down to −37 °C
(−34 °F), outside temperature.
.Gives boiling protection up to 129 °C
(265 °F), engine temperature.
.Protects against rust and corrosion.
.Will not damage aluminum parts.
.Helps keep the proper engine
temperature.
Caution
Do not use anything other than a mix of
DEX-COOL coolant that meets GM
Standard GMW3420 and clean, drinkable
water. Anything else can cause damage
to the engine cooling system and the
vehicle, which would not be covered by
the vehicle warranty. Never dispose of engine coolant by putting
it in the trash, or by pouring it on the
ground or into sewers, streams, or bodies of
water. Have the coolant changed by an
authorized service center, familiar with legal
requirements regarding used coolant
disposal. This will help protect the
environment and your health.
Checking Coolant
The vehicle must be on a level surface when
checking the coolant level.
Check to see if coolant is visible in the
coolant surge tank. If the coolant inside the
coolant surge tank is boiling, do not do
anything else until it cools down. See
Engine
Overheating 0274.