Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15165663) - 2022 - CRC - 4/27/21
274 Vehicle Care
3. Fill the coolant surge tank with theproper mixture to the indicated
level mark.
4. With the coolant surge tank pressure cap off, start the engine and let it run until
you can feel the upper radiator hose
getting hot. Watch out for the engine
cooling fan.
By this time, the coolant level inside the
coolant surge tank may be lower. If the
level is lower, add more of the proper
mixture to the coolant surge tank until
the level reaches the indicated
level mark.
5. Replace the pressure cap tightly. 6. Verify coolant level after the engine is
shut off and the coolant is cold.
If necessary, repeat coolant fill procedure
Steps 1–6.
If the coolant still is not at the proper
level when the system cools down again,
see your dealer.
Caution
If the pressure cap is not tightly installed,
coolant loss and engine damage may
occur. Be sure the cap is properly and
tightly secured.
2.0L L4 Engine Only - Automatic Coolant
Service Fill Instructions
If equipped, this feature assists in filling and
removing air from the cooling system after
service of components or when coolant is
added after being too low.
To activate the fill and air removal process:
1. With a cold system, add coolant to the indicated mark on the surge tank.
2. Replace the cap on the surge tank.
3. Connect the vehicle to a battery charger.
4. Turn the ignition to Service Mode. See Ignition Positions 0205. 5. Turn off the air conditioning.
6. Set the parking brake.
7. At the same time, press the accelerator
and the brake for two seconds, then
release.
At the end of the cycle, check the coolant
level in the surge tank and add coolant if it
is low. Turn off the vehicle, allow the
Electronic Control Module (ECM) to go to
sleep, about two minutes, and repeat
Steps 4–7.
Listen for pump activation and movement of
the control valves while watching the level
of the coolant in the surge tank. If the tank
empties, turn the ignition off, carefully
remove the surge tank cap, refill to the
indicated mark, and repeat Steps 4–7. The
fill and air removal process will run for
approximately 10 minutes.
Engine Overheating
The vehicle has several indicators to warn of
the engine overheating.
There is an engine coolant temperature
gauge on the instrument cluster. See Engine
Coolant Temperature Gauge 099. The
vehicle may also display a message on the
Driver Information Center (DIC).
Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15165663) - 2022 - CRC - 4/27/21
Vehicle Care 275
If the decision is made not to lift the hood
when this warning appears, get service help
right away. SeeRoadside Assistance Program
0 358.
If the decision is made to lift the hood,
make sure the vehicle is parked on a level
surface. Then check to see if the engine
cooling fan is running. If the engine is
overheating, the fan should be running. If it
is not, do not continue to run the engine.
Have the vehicle serviced.
Caution
Do not run the engine if there is a leak
in the engine cooling system. This can
cause a loss of all coolant and can
damage the system and vehicle. Have
any leaks fixed right away.
If Steam Is Coming from the Engine
Compartment
{Warning
Steam and scalding liquids from a hot
cooling system are under pressure.
Turning the pressure cap, even a little,
can cause them to come out at high (Continued)
Warning (Continued)
speed and you could be burned. Never
turn the cap when the cooling system,
including the pressure cap, is hot. Wait
for the cooling system and pressure cap
to cool.
If No Steam Is Coming from the Engine
Compartment
If an engine overheat warning is displayed
but no steam can be seen or heard, the
problem may not be too serious. Sometimes
the engine can get a little too hot when the
vehicle:
.Climbs a long hill on a hot day.
.Stops after high-speed driving.
.Idles for long periods in traffic.
If the overheat warning is displayed with no
sign of steam: 1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature and to the highest fan
speed. Open the windows as necessary.
3. When it is safe to do so, pull off the road, shift to P (Park) or N (Neutral), and
let the engine idle. If the engine coolant temperature gauge is
no longer in the overheated area, the
vehicle can be driven. Continue to drive the
vehicle slowly for about 10 minutes. Keep a
safe distance from the vehicle in front. If the
warning does not come back on, continue to
drive normally and have the cooling system
checked for proper fill and function.
If the warning continues, pull over, stop, and
park the vehicle right away.
If there is no sign of steam, idle the engine
for three minutes while parked. If the
warning is still displayed, turn off the
engine until it cools down.
Washer Fluid
What to Use
When windshield washer fluid is needed, be
sure to read the manufacturer's instructions
before use. If operating the vehicle in an
area where the temperature may fall below
freezing, use a fluid that has sufficient
protection against freezing.
Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 289
The vehicle may not be equipped with all of
the fuses, relays, and features shown.Fuses Usage
F1 Body Control Module 6
F2 Diagnostic Link/Central Gateway Module
F3 Electric Steering Column Lock
F4 –
F5 –
F6 Heating, Ventilation, and Air Conditioning
F7 Body Control Module 3
F8 –
F9 Right Front Heated Seat
F10 Airbag/Seatbelt F11 –
F12 Amplifier/Noise Control Module
F13 Body Control Module 7
F14 Left Front Heated Seat F15 –
F16 Sunroof F17 – Fuses Usage
F18 Instrument Cluster
F19 Body Control Module 1
F20 Rear Seat Entertainment F21 Body Control Module 4
F22 Infotainment USB Data/ Aux Jack
F23 Body Control Module 2
F24 USB Charger/Wireless Charging
F25 Park Assist
F26 Communications Integration Module
F27 –
F28 Heating, Ventilation, and Air Conditioning/
Information
Communication System
Display
F29 Radio
F30 Steering Wheel Adjustment Controls
Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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312 Vehicle Care
{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 0318. To use the
tire sealant and compressor kit, see Tire
Sealant and Compressor Kit 0312. 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 Exhaust0211.
{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-
15165663) - 2022 - CRC - 4/27/21
OnStar 369
TTY Users
OnStar has the ability to communicate to
deaf, hard-of-hearing, or speech-impaired
customers while in the vehicle. The available
TTY system can provide in-vehicle access to
all OnStar services, except Virtual Advisor
and OnStar Turn-by-Turn Navigation.
If equipped, TTY mode can be turned on or
off by touching Settings, then Apps, and
then Phone. When TTY mode is on, phone
calls can be made or received with OnStar
using the infotainment display.
OnStar Personal Identification
Number (PIN)
A PIN is needed to access some OnStar
services. The PIN will need to be changed
the first time when speaking with an
Advisor. To change the OnStar PIN, contact
an OnStar Advisor by pressing
Qor calling
1-888-4ONSTAR.
Warranty
OnStar equipment may be warranted as part
of the vehicle warranty.
Languages
The vehicle can be programmed to respond
in multiple languages. Press
Qand ask for
an Advisor. Advisors are available in English,
Spanish, and French. Available languages
may vary by country.
Potential Issues
OnStar cannot perform Remote Door Unlock
or Stolen Vehicle Assistance after the vehicle
has been off continuously for an extended
period of time without an ignition cycle. To
find out the duration of time that applies
for the vehicle, contact an OnStar Advisor by
pressing
Qor calling 1-888-4ONSTAR. If the
vehicle has not been started for an extended
period of time, OnStar can contact Roadside
Assistance or a locksmith to help gain access
to the vehicle.
Global Positioning System (GPS)
.Obstruction of the GPS can occur in a
large city with tall buildings; in parking
garages; around airports; in tunnels and
underpasses; or in an area with very
dense trees. If GPS signals are not
available, the OnStar system should still operate to call OnStar. However, OnStar
could have difficulty identifying the exact
location.
.In emergency situations, OnStar can use
the last stored GPS location to send to
emergency responders.
A temporary loss of GPS can cause loss of
the ability to send a Turn-by-Turn
Navigation route. The Advisor may give a
verbal route or may ask for a call back after
the vehicle is driven into an open area.
Cellular and GPS Antennas
Cellular reception is required for OnStar to
send remote signals to the vehicle. Do not
place items over or near the antenna to
prevent blocking cellular and GPS signal
reception.
Unable to Connect to OnStar Message
If there is limited cellular coverage or the
cellular network has reached maximum
capacity, this message may come on. Press
Qto try the call again or try again after
driving a few miles into another
cellular area.
Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15165663) - 2022 - CRC - 4/27/21
372 Connected Services
Ensuring Security
.Change the default passwords for the
Wi-Fi hotspot and myChevrolet mobile
application. Make these passwords
different from each other and use a
combination of letters and numbers to
increase the security.
.Change the default name of the SSID
(Service Set Identifier). This is your
network’s name that is visible to other
wireless devices. Choose a unique name
and avoid family names or vehicle
descriptions.
Wi-Fi Hotspot (If Equipped)
The vehicle may have a built-in Wi-Fi
hotspot that provides access to the Internet
and web content at 4G LTE speed. Up to
seven mobile devices can be connected.
A data plan is required. Use the in-vehicle
controls only when it is safe to do so. 1. To retrieve Wi-Fi hotspot information, press
=to open the OnStar app on the
infotainment display, then select Wi-Fi
Hotspot. On some vehicles, touch Wi-Fi
or Wi-Fi Settings on the screen.
2. The Wi-Fi settings will display the Wi-Fi hotspot name (SSID), password, and on
some vehicles, the connection type (no Internet connection, 3G, 4G, 4G LTE), and
signal quality (poor, good, excellent). The
LTE icon shows connection to Wi-Fi. It is
possible that the icon may not illuminate
even though the vehicle has an active
connection.
3. To change the SSID or password, press
Qor call 1-888-4ONSTAR to connect
with an Advisor. On some vehicles, the
SSID and password can be changed in
the Wi-Fi Hotspot menu.
After initial set-up, your vehicle’s Wi-Fi
hotspot will connect automatically to your
mobile devices. Manage data usage by
turning Wi-Fi on or off on your mobile
device, using the myChevrolet mobile app,
or by contacting an OnStar Advisor. On
some vehicles, Wi-Fi can also be managed
from the Wi-Fi Hotspot menu.
MyChevrolet Mobile App (If Available)
Download the myChevrolet mobile app to
compatible Apple and Android smartphones.
Chevrolet users can access the following
services from a smartphone:
.Remotely start/stop the vehicle,
if factory-equipped.
.Lock/unlock doors, if equipped with
automatic locks.
.Activate the horn and lamps.
.Check the vehicle’s fuel level, oil life,
or tire pressure, if factory-equipped with
the Tire Pressure Monitor System.
.Send destinations to the vehicle.
.Locate the vehicle on a map (U.S.
market only).
.Turn the vehicle's Wi-Fi hotspot on/off,
manage settings, and monitor data
consumption, if equipped.
.Locate a dealer and schedule service.
.Request Roadside Assistance.
.Set a parking reminder with pin drop,
take a photo, make a note, and set a
timer.
.Connect with Chevrolet on social media.
Features are subject to change. For
myChevrolet mobile app information
and compatibility, see my.chevrolet.com.
An active OnStar or connected service plan
may be required. A compatible device,
factory-installed remote start, and power
locks are required. Data rates apply. See
www.onstar.com for details and system
limitations.
Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15165663) - 2022 - CRC - 4/27/21
Index 375
Assistance Systems for Parking andBacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Audio Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Auto Stop Stop/Start System . . . . . . . . . . . . . . . . . . . . . 207
Automatic
Dimming Mirrors . . . . . . . . . . . . . . . . . . . . . . . 26
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Emergency Braking (AEB) . . . . . . . . . . . . . . 238
Headlamp System . . . . . . . . . . . . . . . . . . . . . 126
Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Transmission Fluid . . . . . . . . . . . . . . . . . . . . . 269
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . 213
Shift Lock Control Function Check . . . . . . 278
Avoiding Untrusted Media Devices . . . . . . . 140
B
Battery Exterior Lighting Battery Saver . . . . . . . . 130
Load Management . . . . . . . . . . . . . . . . . . . . . 129
Power Protection . . . . . . . . . . . . . . . . . . . . . . 130
Battery - North America . . . . . . . . . . . . .278, 323
Blade Replacement, Wiper . . . . . . . . . . . . . . . 279 Bluetooth
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 160, 161
Bluetooth Audio . . . . . . . . . . . . . . . . . . . . . . . . . .143
Brake Electric Boost . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Parking, Electric . . . . . . . . . . . . . . . . . . . . . . . . 215
System Warning Light . . . . . . . . . . . . . . . . . 104
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276 Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193 Automatic Emergency (AEB) . . . . . . . . . . . 238
Braking System Front Pedestrian (FPB) . . . . . . . . . . . . . . . . . 239
Break-In, New Vehicle . . . . . . . . . . . . . . . . . . . . 204
Buckle To Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Bulb Replacement
Back-up Lamps . . . . . . . . . . . . . . . . . . . . . . . . . 282
Headlamp Aiming . . . . . . . . . . . . . . . . . . . . . . 281
Headlamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
High Intensity Discharge (HID)Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
Buying New Tires . . . . . . . . . . . . . . . . . . . . . . . . 307
C
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . . . . . . 260
California Proposition 65 Warning . . . . . . . . . . . . . . . . . . . . . . . .278, 323, Back Cover
Camera Rear Vision (RVC) . . . . . . . . . . . . . . . . . . . . . . 231
Canadian Vehicle Owners . . . . . . . . . . . . . . . . . . . 1
Capacities and Specifications . . . . . . . . . . . . . 352
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . 211
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . . 200
Cargo Management System . . . . . . . . . . . . . . . . . . . 82
Tie-Downs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Caution, Danger, and Warning . . . . . . . . . . . . . .2
Center Console Storage . . . . . . . . . . . . . . . . . . . 80
Chains, Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Charging System Light . . . . . . . . . . . . . . . . . . . 103
Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Index 377
Driver Mode Control . . . . . . . . . . . . . . . . . . . . . 219
Driver Mode Control Light . . . . . . . . . . . . . . . 108
DrivingAssistance Systems . . . . . . . . . . . . . . . . . . . . 236
Better Fuel Economy . . . . . . . . . . . . . . . . . . . 192
Characteristics and Towing Tips . . . . . . . . 247
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Hill and Mountain Roads . . . . . . . . . . . . . . 199
If the Vehicle is Stuck . . . . . . . . . . . . . . . . . 201
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . 195
Off-Road . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 195
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . 201
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
E
Electric Brake Boost . . . . . . . . . . . . . . . . . . . . . . . 215
Electric Parking Brake . . . . . . . . . . . . . . . . . . . . . 215
Electric Parking Brake Light . . . . . . . . . . . . . . 105
Electrical Equipment, Add-On . . . . . . . . . . . . 257
Electrical SystemEngine Compartment Fuse Block . . . . . . . 285
Fuses and Circuit Breakers . . . . . . . . . . . . . 284
Instrument Panel Fuse Block . . . . . . . . . . . 288 Electrical System (cont'd)
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Rear Compartment Fuse Block . . . . . . . . . 290
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 367
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . 270
Check Light (Malfunction Indicator) . . . . 103
Compartment Overview . . . . . . . . . . . . . . . . 263
Coolant Temperature Gauge . . . . . . . . . . . . 99
Coolant Temperature WarningLight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . 271
Drive Belt Routing . . . . . . . . . . . . . . . . . . . . . 354
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . 268
Oil Pressure Light . . . . . . . . . . . . . . . . . . . . . . 109
Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Power Messages . . . . . . . . . . . . . . . . . . . . . . . . 116
Running While Parked . . . . . . . . . . . . . . . . . . 211
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Engine Air Filter Life System . . . . . . . . . . . . . 269
Engine Oil Temperature Gauge . . . . . . . . . . . . . . . . . . . . . 99
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Equipment, Towing . . . . . . . . . . . . . . . . . . . . . . 254
Event Data Recorders . . . . . . . . . . . . . . . . . . . . 365 Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Extended Parking . . . . . . . . . . . . . . . . . . . . . . . . . 211
Extender, Seat Belt . . . . . . . . . . . . . . . . . . . . . . . 50
Exterior Lamp Controls . . . . . . . . . . . . . . . . . . . .124
Exterior Lamps Off Reminder . . . . . . . . . . . . . 125
Exterior Lighting Battery Saver . . . . . . . . . . 130
F
Filter,
Engine Air Cleaner . . . . . . . . . . . . . . . . . . . . . 270
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Flashers, Hazard Warning . . . . . . . . . . . . . . . . . 127
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 318
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
Fluid Automatic Transmission . . . . . . . . . . . . . . . 269
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Forward Collision Alert (FCA) System . . . . 236
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Front Seats
Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Heated and Ventilated . . . . . . . . . . . . . . . . . . 41