2019 CHEVROLET BLAZER BAT

Chevrolet Blazer (GMNA-Localizing-U.S./Canada/Mexico-12461541) - 2019 -
CRC - 3/11/19
Driving and Operating 253
slack so the combination can turn.
Never allow safety chains to drag on
the ground.
Trailer Brakes
Loaded trailers over 450 kg
(1,000 lb) must be equipped with
brake systems and with brakes for
each axle. Trailer braking equipment
conforming to Canadian Standards
Association (CSA) requirement
CAN3-D313, or its equivalent, is
recommended.
State or local regulations may
require trailers to have their own
braking system if the loaded weight
of the trailer exceeds certain
minimums that can vary from state
to state. Read and follow the
instructions for the trailer brakes so
they are installed, adjusted, and
maintained properly. Never attempt
to tap into your vehicle's hydraulic
brake system. If you do, both the
vehicle antilock brakes and the
trailer brakes may not function,
which could result in a crash.
Trailer Wiring Harness
Basic Trailer Wiring
The trailer wiring harness, with a
seven-pin connector, is at the rear
of the vehicle and is tied to the
vehicle's frame. The harness
requires the installation of a trailer
connector, which is available
through your dealer.
Use only a round, seven-wire
connector with flat blade terminals
meeting SAE J2863 specifications
for proper electrical connectivity.
The seven-wire harness contains
the following trailer circuits:
.Yellow: Left Stop/Turn Signal
. Green: Right Stop/Turn Signal
. Brown: Tail/Parking Lamps
. White: Trailer Ground
. Red: Stop Lamp Supply Voltage
. Black: Back Up Lamp Supply
Voltage
. Blue: Service Brakes The fuse for the electric trailer brake
circuit is in the engine compartment
fuse block, but the wires may not be
connected. They should be
connected by your dealer or a
qualified service center. To control
electric trailer brakes, a trailer brake
controller needs to be installed on
the vehicle by your dealer or a
qualified service center. See electric
brake control wiring provisions.
If a battery outside the vehicle is
being charged, place the vehicle in
Tow/Haul Mode. This will boost the
vehicle system voltage and properly
charge the battery. If the trailer is
too light for Tow/Haul Mode, turn on
the non-HID only headlamps as a
second way to boost the vehicle
system voltage and charge the
battery.

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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 -
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256 Driving and Operating
Always know the maximum speed
rating for the trailer tires before
driving. This may be significantly
lower than the vehicle tire speed
rating. The speed rating may be on
the trailer tire sidewall. If the speed
rating is not shown, the default
trailer tire speed rating is 105 km/h
(65 mph).Conversions and
Add-Ons
Add-On Electrical
Equipment
{Warning
The Data Link Connector (DLC) is
used for vehicle service and
Emission Inspection/Maintenance
testing. SeeMalfunction
Indicator Lamp (Check Engine
Light) 0135. A device connected
to the DLC —such as an
aftermarket fleet or
driver-behavior tracking device —
may interfere with vehicle
systems. This could affect vehicle
operation and cause a crash.
Such devices may also access
information stored in the vehicle’s
systems.
Caution
Some electrical equipment can
damage the vehicle or cause
components to not work and
would not be covered by the
vehicle warranty. Always check
with your dealer before adding
electrical equipment.
Add-on equipment can drain the
vehicle's 12-volt battery, even if the
vehicle is not operating.
The vehicle has an airbag system.
Before attempting to add anything
electrical to the vehicle, see
Servicing the Airbag-Equipped
Vehicle 089 and
Adding Equipment to the
Airbag-Equipped Vehicle 089.

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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

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258 Vehicle Care
Tire Chains . . . . . . . . . . . . . . . . . . . 316
If a Tire Goes Flat . . . . . . . . . . . . 317
Tire Sealant andCompressor Kit . . . . . . . . . . . . . 319
Storing the Tire Sealant and
Compressor Kit . . . . . . . . . . . . . 326
Tire Changing . . . . . . . . . . . . . . . . 326
Compact Spare Tire . . . . . . . . . . 331
Jump Starting
Jump Starting - North America . . . . . . . . . . . . . . . . . . . . . 332
Towing the Vehicle
Towing the Vehicle . . . . . . . . . . . 335
Recreational VehicleTowing . . . . . . . . . . . . . . . . . . . . . . 335
Appearance Care
Exterior Care . . . . . . . . . . . . . . . . . 338
Interior Care . . . . . . . . . . . . . . . . . . 343
Floor Mats . . . . . . . . . . . . . . . . . . . . 346
General Information
For service and parts needs, visit
your dealer. You will receive
genuine GM parts and GM-trained
and supported service people.
Genuine GM parts have one of
these marks:
California Proposition
65 Warning
{Warning
Most motor vehicles, including
this one, as well as many of its
service parts and fluids, contain
and/or emit chemicals known to
the State of California to cause
cancer and birth defects or other
reproductive harm. Engine
exhaust, many parts and
systems, many fluids, and some
component wear by-products
contain and/or emit these
chemicals. For more information
go to www.P65Warnings.ca.gov/
passenger-vehicle.
See Battery - North America 0279
and
Jump Starting - North America
0 332 and the back cover.

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Vehicle Care 259
California Perchlorate
Materials Requirements
Certain types of automotive
applications, such as airbag
initiators, seat belt pretensioners,
and lithium batteries contained in
Remote Keyless Entry transmitters,
may contain perchlorate materials.
Special handling may be necessary.
For additional information, see
www.dtsc.ca.gov/hazardouswaste/
perchlorate.
Accessories and
Modifications
Adding non-dealer accessories or
making modifications to the vehicle
can affect vehicle performance and
safety, including such things as
airbags, braking, stability, ride and
handling, emissions systems,
aerodynamics, durability, and
electronic systems like antilock
brakes, traction control, and stability
control. These accessories or
modifications could even cause
malfunction or damage not covered
by the vehicle warranty.Damage to suspension components
caused by modifying vehicle height
outside of factory settings will not be
covered by the vehicle warranty.
Damage to vehicle components
resulting from modifications or the
installation or use of non-GM
certified parts, including control
module or software modifications, is
not covered under the terms of the
vehicle warranty and may affect
remaining warranty coverage for
affected parts.
GM Accessories are designed to
complement and function with other
systems on the vehicle. See your
dealer to accessorize the vehicle
using genuine GM Accessories
installed by a dealer technician.
Also, see
Adding Equipment to the
Airbag-Equipped Vehicle 089.
Vehicle Checks
Doing Your Own
Service Work
{Warning
It can be dangerous to work on
your vehicle if you do not have
the proper knowledge, service
manual, tools, or parts. Always
follow owner ’s manual procedures
and consult the service manual
for your vehicle before doing any
service work.
If doing some of your own service
work, use the proper service
manual. It tells you much more
about how to service the vehicle
than this manual can. To order the
proper service manual, see
Publication Ordering Information
0 375.
This vehicle has an airbag system.
Before attempting to do your own
service work, see Servicing the
Airbag-Equipped Vehicle 089.

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Vehicle Care 263
1.Engine Air Cleaner/Filter 0269.
2. Engine Oil Fill Cap. See Engine Oil 0265.
3. Engine Oil Dipstick. See Engine Oil 0265.
4. Engine Cooling Fan (Out of View). See Cooling System
0 271.
5. Brake Fluid Reservoir. See Brake Fluid 0278.
6. Battery - North America 0279.
7. Engine Coolant Surge Tank and Pressure Cap. See
Cooling System 0271.
8. Positive (+) Battery Terminal (Under Cover). See Jump
Starting - North America 0332.
9. Windshield Washer Fluid Reservoir. See Washer Fluid
0 276.
10. Engine Compartment Fuse
Block 0287.
11. Remote Negative (-) Battery Terminal. See Jump Starting -
North America 0332.

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Vehicle Care 265
1.Engine Air Cleaner/Filter 0269.
2. Engine Oil Fill Cap. See Engine Oil 0265.
3. Engine Oil Dipstick. See Engine Oil 0265.
4. Engine Cooling Fan (Out of View). See Cooling System
0 271.
5. Brake Fluid Reservoir. See Brake Fluid 0278.
6. Battery - North America 0279.
7. Engine Coolant Surge Tank and Pressure Cap. See
Cooling System 0271.
8. Positive (+) Battery Terminal. See Jump Starting - North
America 0332.
9. Windshield Washer Fluid Reservoir. See Washer Fluid
0 276.
10. Engine Compartment Fuse
Block 0287.
11. Remote Negative (-) Battery Terminal. See Jump Starting -
North America 0332.Engine Oil
To ensure proper engine
performance and long life, careful
attention must be paid to engine oil.
Following these simple, but
important steps will help protect
your investment:
.
Use engine oil approved to the
proper specification and of the
proper viscosity grade. See
“Selecting the Right Engine Oil”
in this section.
. Check the engine oil level
regularly and maintain the
proper oil level. See “Checking
Engine Oil” and“When to Add
Engine Oil” in this section.
. Change the engine oil at the
appropriate time. See Engine Oil
Life System 0267.
. Always dispose of engine oil
properly. See “What to Do with
Used Oil” in this section.
Checking Engine Oil
Check the engine oil level regularly,
every 650 km (400 mi), especially
prior to a long trip. The engine oil
dipstick handle is a loop. See
Engine Compartment Overview
0262 for the location.
{Warning
The engine oil dipstick handle
may be hot; it could burn you.
Use a towel or glove to touch the
dipstick handle.
If a low oil Driver Information Center
(DIC) message displays, check the
oil level.
Follow these guidelines:
. To get an accurate reading, park
the vehicle on level ground.
Check the engine oil level after
the engine has been off for at
least two hours. Checking the
engine oil level on steep grades
or too soon after engine shutoff
can result in incorrect readings.
Accuracy improves when