
Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13557845) - 2020 - CRC - 3/24/20
Service and Maintenance 345
Additional
Maintenance and Care
Your vehicle is an important
investment and caring for it properly
may help to avoid future costly
repairs. To maintain vehicle
performance, additional
maintenance services may be
required.
It is recommended that your dealer
perform these services—their
trained dealer technicians know
your vehicle best. Your dealer can
also perform a thorough
assessment with a multi-point
inspection to recommend when your
vehicle may need attention.
The following list is intended to
explain the services and conditions
to look for that may indicate
services are required. Battery
The 12-volt battery supplies power
to start the engine and operate any
additional electrical accessories.
.
To avoid break-down or failure to
start the vehicle, maintain a
battery with full cranking power.
. 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 0348 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.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13557845) - 2020 - CRC - 3/24/20
348 Service and Maintenance
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
UsageFluid/Lubricant
Automatic Transmission DEXRON-VI Automatic Transmission Fluid. Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant.
See Cooling System 0259.
Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity
grade. ACDelco dexos1 full synthetic is recommended. See Engine Oil
0 253.
Hood Latch Assembly, Secondary Latch, Pivots, Spring Anchor, and Release Pawl Lubriplate Lubricant Aerosol (GM Part No. 89021668, in
Canada 89021674) or lubricant meeting requirements of NLGI #2,
Category LB or GC-LB.
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid (GM Part No. 19353126, in Canada 19353127).
Key Lock Cylinders, Hood and Door Hinges Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in
Canada 10953474).
Weatherstrip Conditioning Weatherstrip lubricant (GM Part No. 3634770, in Canada 10953518) or equivalent.
Windshield Washer Automotive windshield washer fluid that meets regional freeze protection requirements.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13557845) - 2020 - CRC - 3/24/20
Index 381
Driving (cont'd)Defensive . . . . . . . . . . . . . . . . . . . . . 163
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 163
Hill and Mountain Roads . . . . . . 171
If the Vehicle is Stuck . . . . . . . . . 173
Loss of Control . . . . . . . . . . . . . . . 165
Off-Road . . . . . . . . . . . . . . . . . . . . . 166
Off-Road Recovery . . . . . . . . . . . 165
Vehicle Load Limits . . . . . . . . . . . 174
Wet Roads . . . . . . . . . . . . . . . . . . . 170
Winter . . . . . . . . . . . . . . . . . . . . . . . . 172
Dual Automatic Climate
Control System . . . . . . . . . . . . . . . . 155
E
Electric Brake Boost . . . . . . . . . . . . 191
Electric Parking Brake . . . . . . . . . . 192
Electric Parking Brake Light . . . . 123
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 242
Electrical System Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 276
Fuses and Circuit Breakers . . . 275
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 279
Overload . . . . . . . . . . . . . . . . . . . . . 275 Electrical System (cont'd)
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 282
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . 370
Engine Air Cleaner/Filter . . . . . . . . . . . . . 257
Check Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 120
Compartment Overview . . . . . . . 248
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . .116
Coolant Temperature Warning Light . . . . . . . . . . . . . . . 126
Cooling System . . . . . . . . . . . . . . . 259
Drive Belt Routing . . . . . . . . . . . . 354
Exhaust . . . . . . . . . . . . . . . . . . . . . . 186
Heater . . . . . . . . . . . . . . . . . . . . . . . . 182
Oil Life System . . . . . . . . . . . . . . . 255
Oil Pressure Light . . . . . . . . . . . . 127
Overheating . . . . . . . . . . . . . . . . . . 264
Power Messages . . . . . . . . . . . . . 136
Running While Parked . . . . . . . . 187
Starting . . . . . . . . . . . . . . . . . . . . . . . 180
Engine Air Filter Life System . . . . 257
Engine Oil Temperature Gauge . . . . . . . . . . .116
Entry Lighting . . . . . . . . . . . . . . . . . . . 151 Equipment, Towing . . . . . . . . . . . . . 237
Event Data Recorders . . . . . . . . . . 367
Exit Lighting . . . . . . . . . . . . . . . . . . . . 151
Extended Parking . . . . . . . . . . . . . . . 186
Extender, Seat Belt . . . . . . . . . . . . . . 58
Exterior Lamp Controls . . . . . . . . . 145
Exterior Lamps Off Reminder . . . 147
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . 153
F
Filter,Engine Air Cleaner . . . . . . . . . . . 257
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 147
Flashers, Hazard Warning . . . . . . 149
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 306 Changing . . . . . . . . . . . . . . . . . . . . . 314
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 335
Fluid Automatic Transmission . . . . . . 256
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 267
Washer . . . . . . . . . . . . . . . . . . . . . . . 265
Folding Mirrors . . . . . . . . . . . . . . . . . . 30
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . 215
Frequency Statement
Radio . . . . . . . . . . . . . . . . . . . . . . . . . 365

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13557845) - 2020 - CRC - 3/24/20
Index 385
OutletsPower . . . . . . . . . . . . . . . . . . . . . . . . 102
Overheating, Engine . . . . . . . . . . . . 264
Overview Instrument Panel . . . . . . . . . . . . . . . . 5
P
ParkShifting Out of . . . . . . . . . . . . . . . . 185
Park Assist . . . . . . . . . . . . . . . . . . . . . 210
Parking Brake and P (Park)
Mechanism Check . . . . . . . . . . 269
Extended . . . . . . . . . . . . . . . . . . . . . 186
Over Things That Burn . . . . . . . 185
Parking or Backing Assistance Systems . . . . . . . . . . 210
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . 119
Passenger Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Passenger Sensing System . . . . . 66
Pedestrian Ahead Indicator . . . . . 125
Perchlorate Materials Requirements, California . . . . . . 245
Personalization
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 137 Power
Door Locks . . . . . . . . . . . . . . . . . . . . . 19
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Outlets . . . . . . . . . . . . . . . . . . . . . . . 102
Protection, Battery . . . . . . . . . . . . 152
Retained Accessory (RAP) . . . 184
Seat Adjustment . . . . . . . . . . . . . . . . 42
Windows . . . . . . . . . . . . . . . . . . . . . . . 34
Pregnancy, Using Seat Belts . . . . 58
Privacy Vehicle Data Recording . . . . . . . 367
Program Courtesy Transportation . . . . . . 361
Prohibited Fuels . . . . . . . . . . . . . . . . 226
Proposition 65 Warning,
California . . . . . . . . . . . .244, 268, 321,
Back Cover
Publication Ordering Information . . . . . . . . . . . . . . . . . . . . 364
R
Radio Frequency Statement . . . . 365
Reading Lamps . . . . . . . . . . . . . . . . . 150
Rear Camera Mirror . . . . . . . . . . . . . 32
Rear Seats . . . . . . . . . . . . . . . . . . . . . . 49Heated . . . . . . . . . . . . . . . . . . . . . . . . . 51
Rear Storage . . . . . . . . . . . . . . . . . . . . 92 Rear Vision Camera (RVC) . . . . . 210
Rear Window Washer/Wiper . . . . 101
Rearview Mirrors . . . . . . . . . . . . . . . . 31
Automatic Dimming . . . . . . . . . . . . . 31
Reclining Seatbacks . . . . . . . . . . . . . 43
Recommended Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Recommended Fluids and Lubricants . . . . . . . . . . . . . . . . . . . . . 348
Records Maintenance . . . . . . . . . . . . . . . . . . 350
Recreational Vehicle Towing . . . . 324
Reimbursement Program, GM Mobility . . . . . . . . . . . . . . . . . . . 359
Remote Keyless Entry (RKE) System . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Remote Vehicle Start . . . . . . . . . . . . 15
Replacement Parts Airbags . . . . . . . . . . . . . . . . . . . . . . . . . 71
Maintenance . . . . . . . . . . . . . . . . . . 349
Replacing Airbag System . . . . . . . . 71
Replacing LATCH System
Parts after a Crash . . . . . . . . . . . . . 85
Replacing Seat Belt System Parts after a Crash . . . . . . . . . . . . . 59
Reporting Safety Defects Canadian Government . . . . . . . . 366
General Motors . . . . . . . . . . . . . . . 366

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13557845) - 2020 - CRC - 3/24/20
388 Index
Towing (cont'd)Trailer . . . . . . . . . . . . . . . . . . . . . . . . 233
Trailer Sway Control (TSC) . . . 241
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 323
Traction Control System(TCS)/StabiliTrak Light . . . . . . 126
Off Light . . . . . . . . . . . . . . . . . . . . . . 125
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . 194
Trailer Sway Control (TSC) . . . . . . . . . . 241
Towing . . . . . . . . . . . . . . . . . . . . . . . . 233
Transmission Automatic . . . . . . . . . . . . . . . . . . . . . 187
Fluid, Automatic . . . . . . . . . . . . . . 256
Transportation Program, Courtesy . . . . . . . . . . . . . . . . . . . . . . 361
Trip Odometer . . . . . . . . . . . . . . . . . . 114
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . . . 149
U
Uniform Tire Quality Grading . . . 302
Universal Remote System . . . . . . 141Operation . . . . . . . . . . . . . . . . . . . . . 144
Programming . . . . . . . . . . . . . . . . . 141
Using This Manual . . . . . . . . . . . . . . . . 2
V
Vehicle Alarm System . . . . . . . . . . . . . . . . . . 28
Canadian Owners . . . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . 164
Identification Number (VIN) . . . 351
Load Limits . . . . . . . . . . . . . . . . . . . 174
Messages . . . . . . . . . . . . . . . . . . . . 136
Personalization . . . . . . . . . . . . . . . 137
Remote Start . . . . . . . . . . . . . . . . . . . 15
Security . . . . . . . . . . . . . . . . . . . . . . . . 28
Speed Messages . . . . . . . . . . . . . 136
Towing . . . . . . . . . . . . . . . . . . . . . . . . 323
Vehicle Ahead Indicator . . . . . . . . 124
Vehicle Care
Storing the Tire Sealantand Compressor Kit . . . . . . . . . 314
Tire Pressure . . . . . . . . . . . . . . . . . 291
Vehicle Data Recording and
Privacy . . . . . . . . . . . . . . . . . . . . . . . . 367
Ventilation, Air . . . . . . . . . . . . . . . . . . 159
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Voltage Devices and Wiring . . . . 274
Voltmeter Gauge . . . . . . . . . . . . . . . 117
W
Warning Brake System Light . . . . . . . . . . . 122 Warning (cont'd)
Caution and Danger . . . . . . . . . . . . . 3
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . . . 107
Warnings Hazard Flashers . . . . . . . . . . . . . . 149
Washer Fluid . . . . . . . . . . . . . . . . . . . 265
Wheels
Alignment and Tire Balance . . 304
Different Size . . . . . . . . . . . . . . . . . 302
Replacement . . . . . . . . . . . . . . . . . 304
When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 300
Where to Put the Restraint . . . . . . 77
Windows . . . . . . . . . . . . . . . . . . . . . . . . 34 Power . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Windshield Replacement . . . . . . . . . . . . . . . . . 271
Wiper/Washer . . . . . . . . . . . . . . . . 100
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . 172
Winter Tires . . . . . . . . . . . . . . . . . . . . 285
Wiper Blade Replacement . . . . . . 270
Wipers Rear Washer . . . . . . . . . . . . . . . . . 101
Wireless Charging . . . . . . . . . . . . . . 104
Wiring, High Voltage Devices . . . 274