Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
338 Service and Maintenance
.Trained dealer technicians have the
diagnostic equipment to test the battery
and ensure that the connections and
cables are corrosion-free.
Belts
.Belts may need replacing if they squeak
or show signs of cracking or splitting.
.Trained dealer technicians have access to
tools and equipment to inspect the belts
and recommend adjustment or
replacement when necessary.
Brakes
Brakes stop the vehicle and are crucial to
safe driving.
.Signs of brake wear may include chirping,
grinding, or squealing noises, or difficulty
stopping.
.Trained dealer technicians have access to
tools and equipment to inspect the brakes
and recommend quality parts engineered
for the vehicle. Fluids
Proper fluid levels and approved fluids
protect the vehicle’s systems and
components. See
Recommended Fluids and
Lubricants 0340 for GM approved fluids.
.Engine oil and windshield washer fluid
levels should be checked at every fuel fill.
.Instrument cluster lights may come on to
indicate that fluids may be low and need
to be filled.
Hoses
Hoses transport fluids and should be
regularly inspected to ensure that there are
no cracks or leaks. With a multi-point
inspection, your dealer can inspect the hoses
and advise if replacement is needed.
Lamps
Properly working headlamps, taillamps, and
brake lamps are important to see and be
seen on the road.
.Signs that the headlamps need attention
include dimming, failure to light, cracking,
or damage. The brake lamps need to be
checked periodically to ensure that they
light when braking.
.With a multi-point inspection, your dealer
can check the lamps and note any
concerns.
Shocks and Struts
Shocks and struts help aid in control for a
smoother ride.
.Signs of wear may include steering wheel
vibration, bounce/sway while braking,
longer stopping distance, or uneven
tire wear.
.As part of the multi-point inspection,
trained dealer technicians can visually
inspect the shocks and struts for signs of
leaking, blown seals, or damage, and can
advise when service is needed.
Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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356 Customer Information
If a Crash Occurs
If there has been an injury, call emergency
services for help. Do not leave the scene of
a crash until all matters have been taken
care of. Move the vehicle only if its position
puts you in danger, or you are instructed to
move it by a police officer.
Give only the necessary information to
police and other parties involved in the
crash.
For emergency towing seeRoadside
Assistance Program 0352.
Gather the following information:
.Driver name, address, and telephone
number
.Driver license number
.Owner name, address, and telephone
number
.Vehicle license plate number
.Vehicle make, model, and model year
.Vehicle Identification Number (VIN)
.Insurance company and policy number
.General description of the damage to the
other vehicle Choose a reputable repair facility that uses
quality replacement parts. See
“Collision
Parts” earlier in this section.
If the airbag has inflated, see What Will You
See after an Airbag Inflates? 054.
Managing the Vehicle Damage Repair
Process
In the event that the vehicle requires
damage repairs, GM recommends that you
take an active role in its repair. If you have
a pre-determined repair facility of choice,
take the vehicle there, or have it towed
there. Specify to the facility that any
required replacement collision parts be
original equipment parts, either new
Genuine GM parts or recycled original GM
parts. Remember, recycled parts will not be
covered by the GM vehicle warranty.
Insurance pays the bill for the repair, but
you must live with the repair. Depending on
your policy limits, your insurance company
may initially value the repair using
aftermarket parts. Discuss this with the
repair professional, and insist on Genuine
GM parts. Remember, if the vehicle is
leased, you may be obligated to have the vehicle repaired with Genuine GM parts,
even if your insurance coverage does not
pay the full cost.
If another party's insurance company is
paying for the repairs, you are not obligated
to accept a repair valuation based on that
insurance company's collision policy repair
limits, as you have no contractual limits
with that company. In such cases, you can
have control of the repair and parts choices
as long as the cost stays within reasonable
limits.
Publication Ordering Information
Service Manuals
Service manuals have the diagnosis and
repair information on the engine,
transmission, axle, suspension, brakes,
electrical system, steering system, body, etc.
Customer Literature
Owner’s manuals are written specifically for
owners and are intended to provide basic
operational information about the vehicle.
The owner’s manual includes the
Maintenance Schedule for all models.
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-
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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
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