headlamp CHEVROLET BLAZER 2019 Owner's Guide

Chevrolet Blazer (GMNA-Localizing-U.S./Canada/Mexico-12461541) - 2019 -
CRC - 3/11/19
254 Driving and Operating
Electric Trailer Brake Control
Wiring Provisions
Wiring provisions for an aftermarket
electric trailer brake controller are
included with the vehicle as part of
the trailer wiring package. The
harness contains the following
circuits:
These wiring provisions for an
electric trailer brake controller are
included with the vehicle as part of
the trailer wiring package. The body
harness, inside the front driver side
instrument panel, contains blunt cut
wires below the headlamp switch for
the electric trailer brake controller.
The harness contains the following
wires:
.Blue: Electric Trailer Brakes
. Blue: Battery Feed
. White/Blue: Brake Apply Signal
. Black: Ground
Refer to the aftermarket electric
trailer brake controller owner's
manual to determine wire color
coding of the electric trailer brake
controller. The wire colors on the brake controller may be different
from the vehicle. The electric trailer
brake controller should be installed
by your dealer or a qualified service
center.
Trailer Lamps
Always check all trailer lamps are
working at the beginning of each
trip, and periodically on longer trips.
Turn Signals When Towing a
Trailer
When properly connected, the trailer
turn signals will illuminate to indicate
the vehicle is turning, changing
lanes, or stopping. When towing a
trailer, the arrows on the instrument
cluster will illuminate even if the
trailer is not properly connected or
the bulbs are burned out.
Tow/Haul Mode
For instructions on how to enter
Tow/Haul Mode, see
Driver Mode
Control 0210.
Tow/Haul assists when pulling a
heavy trailer or a large or heavy
load. See Tow/Haul Mode 0204. Tow/Haul Mode is designed to be
most effective when the vehicle and
trailer combined weight is at least
75% of the vehicle's Gross
Combined Weight Rating (GCWR).
See
“Weight of the Trailer” under
Trailer Towing 0247. Tow/Haul
Mode is most useful when towing a
heavy trailer or carrying a large or
heavy load:
. Through rolling terrain.
. In stop-and-go traffic.
. In busy parking lots.
Operating the vehicle in Tow/Haul
Mode when lightly loaded or not
towing will not cause damage;
however, it is not recommended and
may result in unpleasant engine and
transmission driving characteristics
and reduced fuel economy.Trailer Sway
Control (TSC)
Vehicles with StabiliTrak/Electronic
Stability Control (ESC) have a
Trailer Sway Control (TSC) feature.
Trailer sway is unintended

Chevrolet Blazer (GMNA-Localizing-U.S./Canada/Mexico-12461541) - 2019 -
CRC - 3/11/19
Vehicle Care 257
Vehicle Care
General Information
General Information . . . . . . . . . . 258
California Proposition65 Warning . . . . . . . . . . . . . . . . . 258
California Perchlorate Materials Requirements . . . . . 259
Accessories and Modifications . . . . . . . . . . . . . . . . 259
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 259
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 260
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 262
Engine Oil . . . . . . . . . . . . . . . . . . . . 265
Engine Oil Life System . . . . . . . 267
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . 268
Engine Air Filter Life System . . . . . . . . . . . . . . . . . . . . . . 269
Engine Air Cleaner/Filter . . . . . . 269
Cooling System . . . . . . . . . . . . . . 271
Engine Overheating . . . . . . . . . . 275
Washer Fluid . . . . . . . . . . . . . . . . . 276
Brakes . . . . . . . . . . . . . . . . . . . . . . . 277
Brake Fluid . . . . . . . . . . . . . . . . . . . 278 Battery - North America . . . . . . 279
All-Wheel Drive . . . . . . . . . . . . . . . 280
Starter Switch Check . . . . . . . . . 280
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 280
Park Brake and P (Park) Mechanism Check . . . . . . . . . . 280
Wiper Blade Replacement . . . . 281
Windshield Replacement . . . . . 282
Gas Strut(s) . . . . . . . . . . . . . . . . . . 282
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 284
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 284
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . . 284
LED Lighting . . . . . . . . . . . . . . . . . 284
Back-Up Lamps . . . . . . . . . . . . . . 284
Electrical System
High Voltage Devices and Wiring . . . . . . . . . . . . . . . . . . . . . . . 285
Electrical System Overload . . . 286
Fuses and Circuit Breakers . . . 286
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 287
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 291 Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 293
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 295
All-Season Tires . . . . . . . . . . . . . . 296
Winter Tires . . . . . . . . . . . . . . . . . . 297
Summer Tires . . . . . . . . . . . . . . . . 297
Tire Sidewall Labeling . . . . . . . . 298
Tire Designations . . . . . . . . . . . . . 300
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . 300
Tire Pressure . . . . . . . . . . . . . . . . . 303
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . . . 304
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . 305
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . 306
Tire Inspection . . . . . . . . . . . . . . . . 310
Tire Rotation . . . . . . . . . . . . . . . . . 310
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 311
Buying New Tires . . . . . . . . . . . . . 312
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 313
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 314
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 315
Wheel Replacement . . . . . . . . . . 316

Chevrolet Blazer (GMNA-Localizing-U.S./Canada/Mexico-12461541) - 2019 -
CRC - 3/11/19
284 Vehicle Care
Headlamp Aiming
Headlamp aim has been preset and
should need no further adjustment.
If the vehicle is damaged in a crash,
the headlamp aim may be affected.
If adjustment to the headlamps is
necessary, see your dealer.
Bulb Replacement
For the proper type of replacement
bulbs, or any bulb changing
procedure not listed in this section,
contact your dealer.
Caution
Do not replace incandescent
bulbs with aftermarket LED
replacement bulbs. This can
cause damage to the vehicle
electrical system.
High Intensity Discharge
(HID) Lighting
{Warning
The High Intensity Discharge
(HID) lighting system operates at
a very high voltage. If you try to
service any of the system
components, you could be
seriously injured. Have your
dealer or a qualified technician
service them.After an HID headlamp bulb has
been replaced, the beam might be a
slightly different shade than it was
originally. This is normal.
LED Lighting
This vehicle has several LED lamps.
For replacement of any LED lighting
assembly, contact your dealer.
Back-Up Lamps
To replace one of these bulbs:
1. Open the liftgate.

Chevrolet Blazer (GMNA-Localizing-U.S./Canada/Mexico-12461541) - 2019 -
CRC - 3/11/19
286 Vehicle Care
Electrical System
Overload
The vehicle has fuses and circuit
breakers to protect against an
electrical system overload.
When the current electrical load is
too heavy, the circuit breaker opens
and closes, protecting the circuit
until the current load returns to
normal or the problem is fixed. This
greatly reduces the chance of circuit
overload and fire caused by
electrical problems.
Fuses and circuit breakers protect
power devices in the vehicle.
Replace a bad fuse with a new one
of the identical size and rating.
If there is a problem on the road and
a fuse needs to be replaced, the
same amperage fuse can be
borrowed. Choose some feature of
the vehicle that is not needed to use
and replace it as soon as possible.
Headlamp Wiring
An electrical overload may cause
the lamps to go on and off, or in
some cases to remain off. Have the
headlamp wiring checked right away
if the lamps go on and off or
remain off.
Windshield Wipers
If the wiper motor overheats due to
heavy snow or ice, the windshield
wipers will stop until the motor cools
and will then restart.
Although the circuit is protected
from electrical overload, overload
due to heavy snow or ice may
cause wiper linkage damage.
Always clear ice and heavy snow
from the windshield before using the
windshield wipers.
If the overload is caused by an
electrical problem and not snow or
ice, be sure to get it fixed.
Fuses and Circuit
Breakers
The wiring circuits in the vehicle are
protected from short circuits by a
combination of fuses and circuit
breakers. This greatly reduces the
chance of damage caused by
electrical problems.
{Danger
Fuses and circuit breakers are
marked with their ampere rating.
Do not exceed the
specified amperage rating when
replacing fuses and circuit
breakers. Use of an oversized
fuse or circuit breaker can result
in a vehicle fire. You and others
could be seriously injured or
killed.
To check a fuse, look at the
silver-colored band inside the fuse.
If the band is broken or melted,
replace the fuse. Be sure to replace
a bad fuse with a new one of the
identical size and rating.

Chevrolet Blazer (GMNA-Localizing-U.S./Canada/Mexico-12461541) - 2019 -
CRC - 3/11/19
Vehicle Care 289
FusesUsage
F18 –
F19 –
F20 –
F21 –
F22 Electronic brake control module
F23 Parking/Trailer lamps
F24 Right trailer stoplamp/Turnlamp
F25 Steering column lock
F26 –
F27 Left trailer stoplamp/Turnlamp
F28 –
F29 –
F30 Washer pump
F31 Spare/Right low-beam
headlamp Fuses
Usage
F32 Left low-beam headlamp
F33 High-beam headlamp shutter/
Fog lamps
F34 Horn
F35 –
F36 Right low-beam/ Left high-beam
headlamp
F37 Spare/Right high-beam
headlamp
F38 Automatic headlamp leveling
motor
F39 Transmission control module
F40 Left rear bus electrical center/DC
DC ignition
F41 Instrument cluster Fuses
Usage
F42 Heating, ventilation, and air
conditioning/
Central gateway
module run/crank
F43 Reflective light alert display
F44 Electronic brake control module/
Electric brake
booster/Run/crank
F45 –
F46 –
F47 –
F48 –
F49 Interior rearview mirror
F50 Fuel system control module/Fuel tank
zone module run/
crank
F51 Heated steering wheel

Chevrolet Blazer (GMNA-Localizing-U.S./Canada/Mexico-12461541) - 2019 -
CRC - 3/11/19
316 Vehicle Care
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 a tire size other
than 235/65R18, 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(Continued)

Chevrolet Blazer (GMNA-Localizing-U.S./Canada/Mexico-12461541) - 2019 -
CRC - 3/11/19
Service and Maintenance 357
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.
Tires
Tires need to be properly inflated,
rotated, and balanced. Maintaining
the tires can save money and fuel,
and can reduce the risk of tire
failure.
. Signs that the tires need to be
replaced include three or more
visible treadwear indicators; cord
or fabric showing through the
rubber; cracks or cuts in the
tread or sidewall; or a bulge or
split in the tire.
. Trained dealer technicians can
inspect and recommend the right
tires. Your dealer can also
provide tire/wheel balancing
services to ensure smooth
vehicle operation at all speeds.
Your dealer sells and services
name brand tires. Vehicle Care
To help keep the vehicle looking like
new, vehicle care products are
available from your dealer. For
information on how to clean and
protect the vehicle’s interior and
exterior, see
Interior Care 0343 and
Exterior Care 0338.
Wheel Alignment
Wheel alignment is critical for
ensuring that the tires deliver
optimal wear and performance.
. Signs that the alignment may
need to be adjusted include
pulling, improper vehicle
handling, or unusual tire wear.
. Your dealer has the required
equipment to ensure proper
wheel alignment.
Windshield
For safety, appearance, and the
best viewing, keep the windshield
clean and clear.
. Signs of damage include
scratches, cracks, and chips.

Chevrolet Blazer (GMNA-Localizing-U.S./Canada/Mexico-12461541) - 2019 -
CRC - 3/11/19
Index 393
Antilock Brake System (ABS) . . . 205Warning Light . . . . . . . . . . . . . . . . . 138
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . 338
Interior . . . . . . . . . . . . . . . . . . . . . . . . 343
Armrest Storage . . . . . . . . . . . . . . . . 110
Assistance Program, Roadside . . . . . . . . . . . . . . . . . . . . . . 370
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . . 229
Assistance Systems for
Parking and Backing . . . . . . . . . . 225
Auto Stop Stop/Start System . . . . . . . . . . . . 195
Automatic Dimming Mirrors . . . . . . . . . . . . . . . . 50
Door Locks . . . . . . . . . . . . . . . . . . . . . 38
Forward Braking . . . . . . . . . . . . . . 232
Headlamp System . . . . . . . . . . . . 163
Transmission . . . . . . . . . . . . . . . . . 201
Transmission Fluid . . . . . . . . . . . 268
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . 203
Shift Lock Control FunctionCheck . . . . . . . . . . . . . . . . . . . . . . . 280B
Battery
Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . 168
Load Management . . . . . . . . . . . . 167
Power Protection . . . . . . . . . . . . . 167
Battery - North America . . . . 279, 332
Blade Replacement, Wiper . . . . . 281
Brake Parking, Electric . . . . . . . . . . . . . . 206
System Warning Light . . . . . . . . 137
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 277 Antilock . . . . . . . . . . . . . . . . . . . . . . . 205
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 207
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 178 Automatic Forward . . . . . . . . . . . 232
Braking System Front Pedestrian (FPB) . . . . . . . 233
Break-In, New Vehicle . . . . . . . . . . 192
Bulb Replacement Back-up Lamps . . . . . . . . . . . . . . . 284
Headlamp Aiming . . . . . . . . . . . . . 284
Headlamps . . . . . . . . . . . . . . . . . . . 284
High Intensity Discharge(HID) Lighting . . . . . . . . . . . . . . . 284
Buying New Tires . . . . . . . . . . . . . . . 312
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 119
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 259
California Proposition
65 Warning . . . . . . . . . .258, 279, 332, Back Cover
Canadian Vehicle Owners . . . . . . . . 2
Capacities and
Specifications . . . . . . . . . . . . . . . . . 363
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 200
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . 40
Winter Driving . . . . . . . . . . . . . . . . 186
Cargo Management System . . . . . . . . . . 111
Tie-Downs . . . . . . . . . . . . . . . . . . . . . 111
Caution, Danger, and Warning . . . . 3
Center Console Storage . . . . . . . . 110
Chains, Tire . . . . . . . . . . . . . . . . . . . . 316
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . 121
Charging System Light . . . . . . . . . 135
Check Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 135

Chevrolet Blazer (GMNA-Localizing-U.S./Canada/Mexico-12461541) - 2019 -
CRC - 3/11/19
396 Index
Front SeatsAdjustment . . . . . . . . . . . . . . . . . . . . . 61
Heated and Ventilated . . . . . . . . . . 67
Fuel Additives . . . . . . . . . . . . . . . . . . . . . 241
Economy Driving . . . . . . . . . . . . . . . 24
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 243
Filling the Tank . . . . . . . . . . . . . . . 241
Foreign Countries . . . . . . . . . . . . 241
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 131
Low Fuel Warning Light . . . . . . . 142
Management, Active . . . . . . . . . . 199
Prohibited Fuels . . . . . . . . . . . . . . 240
Recommended . . . . . . . . . . . . . . . 240
Top Tier . . . . . . . . . . . . . . . . . . . . . . 240
Fuses Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 287
Fuses and Circuit Breakers . . . 286
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 291
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 293G
Garage Door Opener . . . . . . . . . . . 156Programming . . . . . . . . . . . . . . . . . 156
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . 282
Gauges Engine CoolantTemperature . . . . . . . . . . . . . . . . 132
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Odometer . . . . . . . . . . . . . . . . . . . . . 130
Speedometer . . . . . . . . . . . . . . . . . 130
Tachometer . . . . . . . . . . . . . . . . . . . 130
Trip Odometer . . . . . . . . . . . . . . . . 130
Warning Lights and Indicators . . . . . . . . . . . . . . . . . . . 123
General Information Service and Maintenance . . . . . 348
Towing . . . . . . . . . . . . . . . . . . . . . . . . 243
Vehicle Care . . . . . . . . . . . . . . . . . . 258
Glove Box . . . . . . . . . . . . . . . . . . . . . . 109
GM Mobility Reimbursement
Program . . . . . . . . . . . . . . . . . . . . . . . 370
H
Hazard Warning Flashers . . . . . . . 164
Head Restraints . . . . . . . . . . . . . . . . . 59
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . 284
Automatic . . . . . . . . . . . . . . . . . . . . . 163 Headlamps (cont'd)
Bulb Replacement . . . . . . . . . . . . 284
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . 163
Flash-to-Pass . . . . . . . . . . . . . . . . . 162
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . 284
High-Beam On Light . . . . . . . . . . 142
High/Low Beam Changer . . . . . 162
Lamps On Reminder . . . . . . . . . 143
Heated Rear Seats . . . . . . . . . . . . . . . . . . . . . 71
Steering Wheel . . . . . . . . . . . . . . . .116
Heated and Ventilated Front
Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Heated Mirrors . . . . . . . . . . . . . . . . . . . 50
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . 196
Heating . . . . . . . . . . . . . . . . . . . . . . . . . 170
High Voltage Devices and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . 285
High-Beam On Light . . . . . . . . . . . . 142
High-Speed Operation . . . . . . . . . . 304
Hill and Mountain Roads . . . . . . . . 185
Hill Start Assist (HSA) . . . . . . . . . . 208
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Hooks Shopping Bag . . . . . . . . . . . . . . . . . 111