2021 CHEVROLET BLAZER stop start

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
Vehicle Care 299
{Warning
Overinflating a tire could cause the tire
to rupture and you or others could be
injured. Do not exceed the maximum
pressure listed on the tire sidewall. See
Tire Sidewall Labeling0289 and
Vehicle Load Limits 0197.
If the tire is overinflated by more than
35 kPa (5 psi), the horn will sound multiple
times and the turn signal lamp will continue
to flash for several seconds after filling
stops. To release and correct the pressure,
while the turn signal lamp is still flashing,
briefly press the center of the valve stem.
When the recommended pressure is reached,
the horn sounds once.
If the turn signal lamp does not flash within
15 seconds after starting to inflate the tire,
the tire fill alert has not been activated or is
not working.
If the hazard warning flashers are on, the
tire fill alert visual feedback will not work
properly.
The TPMS will not activate the tire fill alert
properly under the following conditions:
.There is interference from an external
device or transmitter.
.The air pressure from the inflation device
is not sufficient to inflate the tire.
.There is a malfunction in the TPMS.
.There is a malfunction in the horn or turn
signal lamps.
.The identification code of the TPMS
sensor is not registered to the system.
.The battery of the TPMS sensor is low.
If the tire fill alert does not operate due to
TPMS interference, move the vehicle about
1 m (3 ft) back or forward and try again.
If the tire fill alert feature is not working,
use a tire pressure gauge.
TPMS Sensor Matching Process
Each TPMS sensor has a unique
identification code. The identification code
needs to be matched to a new tire/wheel
position after rotating the vehicle’s tires or
replacing one or more of the TPMS sensors.
The TPMS sensor matching process should
also be performed after replacing a spare
tire with a road tire containing the TPMS
sensor. The malfunction light and the DIC
message should go off at the next ignition
cycle. The sensors are matched to the tire/
wheel positions, using a TPMS relearn tool, in the following order: driver side front tire,
passenger side front tire, passenger side rear
tire, and driver side rear tire. See your
dealer for service or to purchase a relearn
tool. A TPMS relearn tool can also be
purchased. See Tire Pressure Monitor Sensor
Activation Tool at
www.gmtoolsandequipment.com or call
1-800-GM TOOLS (1-800-468-6657).
There are two minutes to match the first
tire/wheel position, and five minutes overall
to match all four tire/wheel positions. If it
takes longer, the matching process stops
and must be restarted.
The TPMS sensor matching process is:
1. Set the parking brake.
2. Place the vehicle in Service Mode. See Ignition Positions 0200.
3. Make sure the Tire Pressure info page option is turned on. The info pages on
the DIC can be turned on and off
through the Options menu. See Driver
Information Center (DIC) (Base and
Midlevel) 0107 or
Driver Information Center (DIC) (Uplevel)
0 110.

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
366 Connected Services
PressQ, then ask the Advisor to download
directions to the vehicle’s navigation system,
if equipped. After the call ends, the
navigation screen will provide prompts to
begin driving directions. Routes that are sent
to the navigation screen can only be
canceled through the navigation system.
See www.onstar.com (U.S.) or www.onstar.ca
(Canada).
Connections
The following services help with staying
connected.
For coverage maps, see www.onstar.com
(U.S.) or www.onstar.ca (Canada).
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.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
Index 369
AudioBluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Auto Stop Stop/Start System . . . . . . . . . . . . . . . . . . . . . 203
Automatic Dimming Mirrors . . . . . . . . . . . . . . . . . . . . . . . 26
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Emergency Braking (AEB) . . . . . . . . . . . . . . 232
Headlamp System . . . . . . . . . . . . . . . . . . . . . 123
Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Transmission Fluid . . . . . . . . . . . . . . . . . . . . . 265
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . 209
Shift Lock Control Function Check . . . . . . 275
Avoiding Untrusted Media Devices . . . . . . . . 137
B
Battery Exterior Lighting Battery Saver . . . . . . . . . 127
Load Management . . . . . . . . . . . . . . . . . . . . . 126
Power Protection . . . . . . . . . . . . . . . . . . . . . . . 127
Battery - North America . . . . . . . . . . . . . 274, 318
Blade Replacement, Wiper . . . . . . . . . . . . . . . 276
Bluetooth Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Bluetooth Audio . . . . . . . . . . . . . . . . . . . . . . . . . 140
Brake
Electric Boost . . . . . . . . . . . . . . . . . . . . . . . . . . 210 Brake (cont'd)
Parking, Electric . . . . . . . . . . . . . . . . . . . . . . . . . 211
System Warning Light . . . . . . . . . . . . . . . . . 101
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273 Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189 Automatic Emergency (AEB) . . . . . . . . . . . 232
Braking System Front Pedestrian (FPB) . . . . . . . . . . . . . . . . . 234
Break-In, New Vehicle . . . . . . . . . . . . . . . . . . . . 200
Bulb Replacement
Back-up Lamps . . . . . . . . . . . . . . . . . . . . . . . . . 278
Headlamp Aiming . . . . . . . . . . . . . . . . . . . . . . 278
Headlamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
High Intensity Discharge (HID)Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Buying New Tires . . . . . . . . . . . . . . . . . . . . . . . . 302
C
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
California Perchlorate Materials Requirements . . . 254
California Proposition 65 Warning . . . . . . . . . . . . . . . . . . .254, 274, 318,
Back Cover
Canadian Vehicle Owners . . . . . . . . . . . . . . . . . . . 1 Capacities and Specifications . . . . . . . . . . . . . 345
Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . . . . . . . . . . . . 207
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . . 195
Cargo Management System . . . . . . . . . . . . . . . . . . . 79
Tie-Downs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Caution, Danger, and Warning . . . . . . . . . . . . . .2
Center Console Storage . . . . . . . . . . . . . . . . . . . .77
Chains, Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Charging System Light . . . . . . . . . . . . . . . . . . . 100
Check Engine Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Child Restraints Infants and Young Children . . . . . . . . . . . . . 61
Lower Anchors and Tethers forChildren . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Older Children . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Securing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72, 73
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . 280
Cleaning
Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 327

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
376 Index
S
Safety Defects ReportingCanadian Government . . . . . . . . . . . . . . . . . 357
General Motors . . . . . . . . . . . . . . . . . . . . . . . . 358
U.S. Government . . . . . . . . . . . . . . . . . . . . . . . 357
Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Safety System Check . . . . . . . . . . . . . . . . . . . . . 49
Satellite Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Scheduling Appointments . . . . . . . . . . . . . . . . 353
Sealant Kit, Tire . . . . . . . . . . . . . . . . . . . . . . . . . . 307
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Extender . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
How to Wear Seat Belts Properly . . . . . . . 45
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . . . . 46
Reminders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Replacing after a Crash . . . . . . . . . . . . . . . . . 50
Use During Pregnancy . . . . . . . . . . . . . . . . . . 49
Seats
Adjustment, Front . . . . . . . . . . . . . . . . . . . . . . 35
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . 33
Heated and Ventilated Front . . . . . . . . . . . . 40
Heated, Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Lumbar Adjustment, Front . . . . . . . . . . . . . . 36
Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Power Adjustment, Front . . . . . . . . . . . . . . . 36
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Reclining Seatbacks . . . . . . . . . . . . . . . . . . . . . 37 Securing Child Restraints . . . . . . . . . . . . . . . 72, 73
Security
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Vehicle Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Accessories and Modifications . . . . . . . . . 254
Doing Your Own Work . . . . . . . . . . . . . . . . . 255
Maintenance Records . . . . . . . . . . . . . . . . . . 343
Maintenance, General Information . . . . . 331
Parts Identification . . . . . . . . . . . . . . . . . . . . . 344
Scheduling Appointments . . . . . . . . . . . . . . 353
Service Electric Parking Brake Light . . . . . . 102
Services Special Application . . . . . . . . . . . . . . . . . . . . . 337
Servicing System . . . . . . . . . . . . . . . . . . . . . . . . . 153
Servicing the Airbag . . . . . . . . . . . . . . . . . . . . . . 58
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Shift Lock Control Function Check, Automatic Transmission . . . . . . . . . . . . . . . . 275
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Out of Park . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Shopping Bag Hooks . . . . . . . . . . . . . . . . . . . . . . 78
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . 236
Signals, Turn and Lane-Change . . . . . . . . . . . .124
Software Updates . . . . . . . . . . . . . . . . . . . . . . . . .134 Spare Tire
Compact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 317
Special Application Services . . . . . . . . . . . . . . 337
Specifications and Capacities . . . . . . . . . . . . . 345
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Start Assist, Hill . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Start Vehicle, Remote . . . . . . . . . . . . . . . . . . . . . . 13
Starting the Engine . . . . . . . . . . . . . . . . . . . . . . 202
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189 Heated Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Wheel Adjustment . . . . . . . . . . . . . . . . . . . . . . 83
Wheel Controls . . . . . . . . . . . . . . . . . . . . . . . . . 83
Steering Wheel Controls . . . . . . . . . . . . . . . . . 130
Stop/Start System . . . . . . . . . . . . . . . . . . . . . . . 203
Storage Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Storage Areas Armrest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Cargo Management System . . . . . . . . . . . . 79
Center Console . . . . . . . . . . . . . . . . . . . . . . . . . 77
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Roof Rack System . . . . . . . . . . . . . . . . . . . . . . . 81
Sunglasses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Storage Compartments . . . . . . . . . . . . . . . . . . . 76
Storing the Tire Sealant and Compressor Kit . . . . . . . . . . . . . . . . . . . . . . . . . . 313