2021 CHEVROLET BLAZER warning light

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
304 Vehicle Care
The Uniform Tire Quality Grading
(UTQG) system does not apply to deep
tread, winter tires, compact spare tires,
tires with nominal rim diameters of
10 to 12 inches (25 to 30 cm), or to some
limited-production tires.
While the tires available on General
Motors passenger cars and light trucks
may vary with respect to these grades,
they must also conform to federal
safety requirements and additional
General Motors Tire Performance
Criteria (TPC) standards.
Quality grades can be found where
applicable on the tire sidewall between
tread shoulder and maximum section
width. For example:
Treadwear 200 Traction AA Temperature A
All Passenger Car Tires Must Conform to
Federal Safety Requirements In Addition
To These Grades.
Treadwear
The treadwear grade is a comparative
rating based on the wear rate of the
tire when tested under controlledconditions on a specified government
test course. For example, a tire graded
150 would wear one and one-half (1½)
times as well on the government course
as a tire graded 100. The relative
performance of tires depends upon the
actual conditions of their use, however,
and may depart significantly from the
norm due to variations in driving habits,
service practices and differences in road
characteristics and climate.
Traction
The traction grades, from highest to
lowest, are AA, A, B, and C. Those
grades represent the tire's ability to
stop on wet pavement as measured
under controlled conditions on specified
government test surfaces of asphalt and
concrete. A tire marked C may have
poor traction performance. Warning:
The traction grade assigned to this tire
is based on straight-ahead braking
traction tests, and does not include
acceleration, cornering, hydroplaning,
or peak traction characteristics.
Temperature
The temperature grades are A (the
highest), B, and C, representing the
tire's resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled conditions
on a specified indoor laboratory test
wheel. Sustained high temperature can
cause the material of the tire to
degenerate and reduce tire life, and
excessive temperature can lead to
sudden tire failure. The grade C
corresponds to a level of performance
which all passenger car tires must meet
under the Federal Motor Safety
Standard No. 109. Grades B and A
represent higher levels of performance
on the laboratory test wheel than the
minimum required by law. Warning:
The temperature grade for this tire is
established for a tire that is properly
inflated and not overloaded. Excessive
speed, underinflation, or excessive
loading, either separately or in
combination, can cause heat buildup
and possible tire failure.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
Vehicle Care 305
Wheel Alignment and Tire
Balance
The tires and wheels were aligned and
balanced at the factory to provide the
longest tire life and best overall
performance. Adjustments to wheel
alignment and tire balancing are not
necessary on a regular basis. Consider an
alignment check if there is unusual tire wear
or the vehicle is significantly pulling to one
side or the other. Some slight pull to the
left or right, depending on the crown of the
road and/or other road surface variations
such as troughs or ruts, is normal. If the
vehicle is vibrating when driving on a
smooth road, the tires and wheels may
need to be rebalanced. See your dealer for
proper diagnosis.
Wheel Replacement
Replace any wheel that is bent, cracked,
or badly rusted or corroded. If wheel nuts
keep coming loose, the wheel, wheel bolts,
and wheel nuts should be replaced. If the
wheel leaks air, replace it. Some aluminum
wheels can be repaired. See your dealer if
any of these conditions exist.Your dealer will know the kind of wheel that
is needed.
Each new wheel should have the same
load-carrying capacity, diameter, width,
offset, and be mounted the same way as
the one it replaces.
Replace wheels, wheel bolts, wheel nuts,
or Tire Pressure Monitor System (TPMS)
sensors with new GM original equipment
parts.
{Warning
Using the wrong replacement wheels,
wheel bolts, or wheel nuts can be
dangerous. It could affect the braking and
handling of the vehicle. Tires can lose air,
and cause loss of control, causing a crash.
Always use the correct wheel, wheel
bolts, and wheel nuts for replacement.
Caution
The wrong wheel can also cause
problems with bearing life, brake cooling,
speedometer or odometer calibration,
headlamp aim, bumper height, vehicle
ground clearance, and tire or tire chain
clearance to the body and chassis.
Used Replacement Wheels
{Warning
Replacing a wheel with a used one is
dangerous. How it has been used or how
far it has been driven may be unknown.
It could fail suddenly and cause a crash.
When replacing wheels, use a new GM
original equipment wheel.
Tire Chains
{Warning
If the vehicle has 235/55R20 or 265/45R21
size tires, do not use tire chains. There is
not enough clearance. Tire chains used on
a vehicle without the proper amount of
clearance can cause damage to the
brakes, suspension, or other vehicle parts.
The area damaged by the tire chains
could cause loss of control and a crash.
Use another type of traction device only
if its manufacturer recommends it for the
vehicle's tire size combination and road
conditions. Follow that manufacturer's
instructions. To avoid vehicle damage,
drive slow and readjust or remove the
(Continued)

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
Vehicle Care 319
1. Discharged Battery Positive (+)Terminal
2. Discharged Battery Remote Negative (–) Terminal
3. Good Battery Negative (–) Terminal
4. Good Battery Positive (+) Terminal
The jump start positive (+) terminal (1) and
the negative remote negative terminal (2)
for the discharged battery are on the driver
side of the vehicle.
The jump start positive (+) terminal (4) and
negative (-) terminal (3) are on the battery
of the vehicle providing the jump start.
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. See Shifting Into Park
0 205.
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.
Battery fluid contains acid that can burn
you. Do not get it on you. If you
accidentally get it in your eyes or on
your skin, flush the place with water and
get medical help immediately.
{Warning
Fans or other moving engine parts can
injure you badly. Keep your hands away
from moving parts once the engine is
running.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
368 Index
IndexA
Accessories and Modifications . . . . . . . . . . . 254
Accessory Power . . . . . . . . . . . . . . . . . . . . . . . . . 205
Active Fuel Management . . . . . . . . . . . . . . . . 206
Adaptive Cruise Control . . . . . . . . . . . . . . . . . . . 217
Add-On Electrical Equipment . . . . . . . . . . . . . 252
Additional InformationOnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361
Additional Maintenance and Care . . . . . . . . 337
Adjustments Lumbar, Front Seats . . . . . . . . . . . . . . . . . . . . 36
Agreements Trademarks and License . . . . . . . . . . . . . . . . 173
Air Cleaner/Filter, Engine . . . . . . . . . . . . . . . . 265
Air Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . .182
Air Filter
Life System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Air Filter, Passenger Compartment . . . . . . . 186
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
How Does an Airbag Restrain? . . . . . . . . . . 54
Passenger Sensing System . . . . . . . . . . . . . . 55
What Makes an Airbag Inflate? . . . . . . . . . 54
What Will You See after an AirbagInflates? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
When Should an Airbag Inflate? . . . . . . . . 53
Where Are the Airbags? . . . . . . . . . . . . . . . . 52 Airbags
Adding Equipment to the Vehicle . . . . . . . 59
Passenger Status Indicator . . . . . . . . . . . . . . 99
Readiness Light . . . . . . . . . . . . . . . . . . . . . . . . . 98
Servicing Airbag-Equipped Vehicles . . . . . . 58
System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Alarm
Vehicle Security . . . . . . . . . . . . . . . . . . . . . . . . 23
Alert Lane Change . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
Side Blind Zone (SBZA) . . . . . . . . . . . . . . . . . 236
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 288
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . 210, 275
AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134
Antenna Multi-band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Antilock Brake System (ABS) . . . . . . . . . . . . . 210 Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . 102
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
Apple CarPlay and Android Auto . . . . . . . . . 163
Armrest Storage . . . . . . . . . . . . . . . . . . . . . . . . . . .77
Assistance Program, Roadside . . . . . . . . . . . . 352
Assistance Systems for Driving . . . . . . . . . . 230
Assistance Systems for Parking and Backing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227

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
370 Index
Climate Control SystemsDual Automatic . . . . . . . . . . . . . . . . . . . . . . . . 182
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Cluster, Instrument . . . . . . . . . . . . . . . . . . . 90, 93
Collision Damage Repair . . . . . . . . . . . . . . . . . 355
Compact Spare Tire . . . . . . . . . . . . . . . . . . . . . . . 317
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Compressor Kit, Tire Sealant . . . . . . . . . . . . . 307
Connected Services Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 366
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 367
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 365
Connections Connected Services . . . . . . . . . . . . . . . . . . . . 366
Control Traction and Electronic Stability . . . . . . . 213
Control of a Vehicle . . . . . . . . . . . . . . . . . . . . . 189
Controls Steering Wheel . . . . . . . . . . . . . . . . . . . . . . . . 130
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Coolant Engine Temperature Gauge . . . . . . . . . . . . . 96
Engine Temperature Warning Light . . . . 105
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .182
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Courtesy Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 Courtesy Transportation Program . . . . . . . . 354
Coverage Explanations . . . . . . . . . . . . . . . . . . . . 153
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Cruise Control, Adaptive . . . . . . . . . . . . . . . . . . 217
Customer Assistance . . . . . . . . . . . . . . . . . . . . . . 351 Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351
Text Telephone (TTY) Users . . . . . . . . . . . . 351
Customer Information Publications Ordering Information . . . . . 356
Customer Satisfaction Procedure . . . . . . . . . 349
Cybersecurity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 358
D
Damage Repair, Collision . . . . . . . . . . . . . . . . . 355
Danger, Warning, and Caution . . . . . . . . . . . . . .2
Data Collection
Infotainment System . . . . . . . . . . . . . . . . . . 359
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359
Data Recorders, Event . . . . . . . . . . . . . . . . . . . 359
Database Coverage Explanations . . . . . . . . . . 153
Daytime Running Lamps (DRL) . . . . . . . . . . . . 123
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . . . 188
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Destination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Diagnostics Connected Services . . . . . . . . . . . . . . . . . . . . 367
Distracted Driving . . . . . . . . . . . . . . . . . . . . . . . . 188 Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Door
Ajar Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . 16
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Drive Belt Routing, Engine . . . . . . . . . . . . . . . 348
Drive Systems
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . 210, 275
Driver Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Driver Assistance Systems . . . . . . . . . . . . . . . 225
Driver Information Center (DIC) . . . . . . 107, 110
Driver Mode Control . . . . . . . . . . . . . . . . . . . . . .214
Driving Assistance Systems . . . . . . . . . . . . . . . . . . . . 230
Better Fuel Economy . . . . . . . . . . . . . . . . . . . 188
Characteristics and Towing Tips . . . . . . . . 242
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Hill and Mountain Roads . . . . . . . . . . . . . . 195
If the Vehicle is Stuck . . . . . . . . . . . . . . . . . 196
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . . 191
Off-Road . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 190
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . 197
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
Index 371
Dual Automatic Climate ControlSystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .182
E
Electric Brake Boost . . . . . . . . . . . . . . . . . . . . . . 210
Electric Parking Brake . . . . . . . . . . . . . . . . . . . . . 211
Electric Parking Brake Light . . . . . . . . . . . . . . 102
Electrical Equipment, Add-On . . . . . . . . . . . . 252
Electrical System
Engine Compartment Fuse Block . . . . . . . 280
Fuses and Circuit Breakers . . . . . . . . . . . . . 280
Instrument Panel Fuse Block . . . . . . . . . . . 284
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279
Rear Compartment Fuse Block . . . . . . . . . 285
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361
Engine
Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . 265
Check Light (Malfunction Indicator) . . . . 100
Compartment Overview . . . . . . . . . . . . . . . . 257
Coolant Temperature Gauge . . . . . . . . . . . . 96
Coolant Temperature WarningLight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . 267
Drive Belt Routing . . . . . . . . . . . . . . . . . . . . . 348
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . 264 Engine (cont'd)
Oil Pressure Light . . . . . . . . . . . . . . . . . . . . . . 105
Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
Power Messages . . . . . . . . . . . . . . . . . . . . . . . . 113
Running While Parked . . . . . . . . . . . . . . . . . 207
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Engine Air Filter Life System . . . . . . . . . . . . . 265
Engine Oil
Temperature Gauge . . . . . . . . . . . . . . . . . . . . . 96
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Equipment, Towing . . . . . . . . . . . . . . . . . . . . . . 248
Event Data Recorders . . . . . . . . . . . . . . . . . . . . 359
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Extended Parking . . . . . . . . . . . . . . . . . . . . . . . . 206
Extender, Seat Belt . . . . . . . . . . . . . . . . . . . . . . . 49
Exterior Lamp Controls . . . . . . . . . . . . . . . . . . . . 121
Exterior Lamps Off Reminder . . . . . . . . . . . . . 122
Exterior Lighting Battery Saver . . . . . . . . . . . 127
F
Filter, Engine Air Cleaner . . . . . . . . . . . . . . . . . . . . . 265
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Flashers, Hazard Warning . . . . . . . . . . . . . . . . .124
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329 Fluid
Automatic Transmission . . . . . . . . . . . . . . . 265
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Forward Collision Alert (FCA) System . . . . 230
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Front Seats
Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Heated and Ventilated . . . . . . . . . . . . . . . . . . 40
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Economy, Driving for Better . . . . . . . . . . . 188
Filling a Portable Fuel Container . . . . . . . 241
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . 240
Foreign Countries . . . . . . . . . . . . . . . . . . . . . . 240
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Low Fuel Warning Light . . . . . . . . . . . . . . . 106
Management, Active . . . . . . . . . . . . . . . . . . . 206
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 239
Recommended . . . . . . . . . . . . . . . . . . . . . . . . . 239
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Fuses Engine Compartment Fuse Block . . . . . . . 280
Fuses and Circuit Breakers . . . . . . . . . . . . . 280

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
372 Index
Fuses (cont'd)Instrument Panel Fuse Block . . . . . . . . . . . 284
Rear Compartment Fuse Block . . . . . . . . . 285
G
Garage Door Opener . . . . . . . . . . . . . . . . . . . . . . 117
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
Gauges
Engine Coolant Temperature . . . . . . . . . . . . 96
Engine Oil Temperature . . . . . . . . . . . . . . . . . 96
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Voltmeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Warning Lights and Indicators . . . . . . . . . . 89
General Information Service and Maintenance . . . . . . . . . . . . . . 331
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Global Positioning System (GPS) . . . . . . . . . . 152
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
Guidance Problems with the Route . . . . . . . . . . . . . . 153
H
Hazard Warning Flashers . . . . . . . . . . . . . . . . .124
HD Radio Technology . . . . . . . . . . . . . . . . . . . . . 135
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . 278
Daytime Running Lamps (DRL) . . . . . . . . . 123
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
High Intensity Discharge (HID)Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
High-Beam On Light . . . . . . . . . . . . . . . . . . . 106
High/Low Beam Changer . . . . . . . . . . . . . . 122
Lamps On Reminder . . . . . . . . . . . . . . . . . . . 107
Heated Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Steering Wheel . . . . . . . . . . . . . . . . . . . . . . . . . 83
Heated and Ventilated Front Seats . . . . . . . 40
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Heater
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .182
High Voltage Devices and Wiring . . . . . . . . 279
High-Beam On Light . . . . . . . . . . . . . . . . . . . . . 106
High-Speed Operation . . . . . . . . . . . . . . . . . . . 295
Hill and Mountain Roads . . . . . . . . . . . . . . . . 195
Hill Start Assist (HSA) . . . . . . . . . . . . . . . . . . . . . 212 Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Hooks
Shopping Bag . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
How to Wear Seat Belts Properly . . . . . . . . . 45
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .182
I
If the System Needs Service . . . . . . . . . . . . . . 153
Ignition Positions . . . . . . . . . . . . . . . . . . . . . . . . 200
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Indicator Pedestrian Ahead . . . . . . . . . . . . . . . . . . . . . . 104
Vehicle Ahead . . . . . . . . . . . . . . . . . . . . . . . . . 103
Infants and Young Children, Restraints . . . . .61
Information Publication Ordering . . . . . . . . . . . . . . . . . . . 356
Infotainment System . . . . . . . . . . . . . . . . . . . . 359
Instrument Cluster . . . . . . . . . . . . . . . . . . . . 90, 93
Instrument Panel Overview . . . . . . . . . . . . . . . . 4
Interior Rearview Mirrors . . . . . . . . . . . . . . . . . 26
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . 1, 128
J
Jump Starting - North America . . . . . . . . . . . .318
K
Keyless Entry Remote (RKE) System . . . . . . . . . . . . . . . . . . . . 7