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Driving and Operating 215
3. Wait 10 seconds, then turn theignition back to RUN.
4. If the CHECK TRAILER WIRING message reappears,
the electrical fault is on the
vehicle side.
If the CHECK TRAILER WIRING
message only reappears when
connecting the trailer wiring harness
to the vehicle, the electrical fault is
on the trailer side.
SERVICE TRAILER BRAKE
SYSTEM: This message will display
when there is a problem with the
ITBC system. If this message
continues over multiple ignition
cycles, have the vehicle serviced.
If either the CHECK TRAILER
WIRING or SERVICE TRAILER
BRAKE SYSTEM message displays
while driving, the ITBC system may
not be fully functional or may not
function at all. When traffic
conditions allow, carefully pull the
vehicle over to the side of the road
and turn the ignition off. Check the
wiring connection to the trailer and turn the ignition back on. If either of
these messages continues, either
the vehicle or trailer needs service.
A GM dealer may be able to
diagnose and repair problems with
the trailer. However, any diagnosis
and repair of the trailer is not
covered under the vehicle warranty.
Contact your trailer dealer for
assistance with trailer repairs and
trailer warranty information.
Trailer Sway
Control (TSC)
Vehicles with StabiliTrak/Electronic
Stability Control (ESC) have a
Trailer Sway Control (TSC) feature.
Trailer sway is unintended
side-to-side motion of a trailer while
towing. If the vehicle is towing a
trailer and the TSC detects that
sway is increasing, the vehicle
brakes are selectively applied at
each wheel, to help reduce
excessive trailer sway. If equipped
with the Integrated Trailer Brake
Control (ITBC) system, and the
trailer has an electric brake system,
StabiliTrak/ESC may also apply the
trailer brakes.
If TSC is enabled, the Traction
Control System (TCS)/StabiliTrak/
ESC warning light will flash on the
instrument cluster. Reduce vehicle
speed by gradually removing your
foot from the accelerator. If trailer
sway continues, StabiliTrak/ESC
can reduce engine torque to help
slow the vehicle. TSC will not
function if StabiliTrak/ESC is turned
off. See
Traction Control/Electronic
Stability Control 0183.

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Vehicle Care 219
Vehicle Care
General Information
General Information . . . . . . . . . . 220
California Proposition65 Warning . . . . . . . . . . . . . . . . . 220
California Perchlorate Materials Requirements . . . . . 221
Accessories and Modifications . . . . . . . . . . . . . . . . 221
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 221
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 222
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 224
Engine Oil . . . . . . . . . . . . . . . . . . . . 227
Engine Oil Life System . . . . . . . 229
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . 231
Engine Air Cleaner/Filter . . . . . . 231
Cooling System . . . . . . . . . . . . . . 233
Engine Overheating . . . . . . . . . . 236
Engine Fan . . . . . . . . . . . . . . . . . . . 237
Washer Fluid . . . . . . . . . . . . . . . . . 238
Brakes . . . . . . . . . . . . . . . . . . . . . . . 239
Brake Fluid . . . . . . . . . . . . . . . . . . . 239
Battery - North America . . . . . . 240 Four-Wheel Drive . . . . . . . . . . . . . 241
Front Axle . . . . . . . . . . . . . . . . . . . . 242
Rear Axle . . . . . . . . . . . . . . . . . . . . 242
Starter Switch Check . . . . . . . . . 242
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 242
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . . . 243
Park Brake and P (Park) Mechanism Check . . . . . . . . . . 243
Wiper Blade Replacement . . . . 243
Windshield Replacement . . . . . 244
Gas Strut(s) . . . . . . . . . . . . . . . . . . 244
Headlamp Aiming
Front Headlamp Aiming . . . . . . 246
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 246
Halogen Bulbs . . . . . . . . . . . . . . . . 246
Headlamps, Front Turn Signal, Sidemarker, and Parking
Lamps . . . . . . . . . . . . . . . . . . . . . . 246
Taillamps, Turn Signal, Stoplamps, and Back-Up
Lamps . . . . . . . . . . . . . . . . . . . . . . 247
Center High-Mounted Stoplamp (CHMSL) and
Cargo Lamp . . . . . . . . . . . . . . . . . 248
Electrical System
Electrical System Overload . . . 249
Fuses and Circuit Breakers . . . 249
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 250
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 254
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 257
All-Season Tires . . . . . . . . . . . . . . 258
Winter Tires . . . . . . . . . . . . . . . . . . 258
All-Terrain Tires . . . . . . . . . . . . . . . 259
Tire Sidewall Labeling . . . . . . . . 259
Tire Designations . . . . . . . . . . . . . 261
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . 262
Tire Pressure . . . . . . . . . . . . . . . . . 264
Tire Pressure Monitor
System . . . . . . . . . . . . . . . . . . . . . . 265
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . 266
Tire Inspection . . . . . . . . . . . . . . . . 271
Tire Rotation . . . . . . . . . . . . . . . . . 271
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 272
Buying New Tires . . . . . . . . . . . . . 273
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 274

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220 Vehicle Care
Uniform Tire QualityGrading . . . . . . . . . . . . . . . . . . . . . 275
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 276
Wheel Replacement . . . . . . . . . . 277
Tire Chains . . . . . . . . . . . . . . . . . . . 277
If a Tire Goes Flat . . . . . . . . . . . . 278
Tire Changing . . . . . . . . . . . . . . . . 280
Compact Spare Tire . . . . . . . . . . 289
Full-Size Spare Tire . . . . . . . . . . 290
Jump Starting
Jump Starting - North
America . . . . . . . . . . . . . . . . . . . . . 291
Towing the Vehicle
Towing the Vehicle . . . . . . . . . . . 294
Recreational VehicleTowing . . . . . . . . . . . . . . . . . . . . . . 295
Appearance Care
Exterior Care . . . . . . . . . . . . . . . . . 299
Interior Care . . . . . . . . . . . . . . . . . . 304
Floor Mats . . . . . . . . . . . . . . . . . . . . 307
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 0240
and
Jump Starting - North America
0 291 and the back cover.

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Vehicle Care 239
Caution (Continued)
for fluid expansion if
freezing occurs, which could
damage the tank if it is
completely full.
Brakes
Disc brake pads have built-in wear
indicators that make a high-pitched
warning sound when the brake pads
are worn and new pads are needed.
The sound can come and go or be
heard all the time the vehicle is
moving, except when applying the
brake pedal firmly.
{Warning
The brake wear warning sound
means that soon the brakes will
not work well. That could lead to
a crash. When the brake wear
warning sound is heard, have the
vehicle serviced.
Caution
Continuing to drive with worn-out
brake pads could result in costly
brake repair.
Some driving conditions or climates
can cause a brake squeal when the
brakes are first applied or lightly
applied. This does not mean
something is wrong with the brakes.
Properly torqued wheel nuts are
necessary to help prevent brake
pulsation. When tires are rotated,
inspect brake pads for wear and
evenly tighten wheel nuts in the
proper sequence to torque
specifications in Capacities and
Specifications 0326.
Brake linings should always be
replaced as complete axle sets.
Brake Pedal Travel
See your dealer if the brake pedal
does not return to normal height,
or if there is a rapid increase in
pedal travel. This could be a sign
that brake service may be required.
Replacing Brake System Parts
Always replace brake system parts
with new, approved replacement
parts. If this is not done, the brakes
may not work properly. The braking
performance expected can change
in many other ways if the wrong
replacement brake parts are
installed or parts are improperly
installed.
Brake Fluid
The brake master cylinder reservoir
is filled with GM approved DOT 3
brake fluid as indicated on the
reservoir cap. See Engine
Compartment Overview 0224 for
the location of the reservoir.

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Vehicle Care 241
Refer to the replacement number
shown on the original battery label
when a new battery is needed. See
Engine Compartment Overview
0224 for battery location.
{Warning
WARNING: Battery posts,
terminals, and related
accessories contain lead and lead
compounds, chemicals known to
the State of California to cause
cancer and birth defects or other
reproductive harm. Batteries also
contain other chemicals known to
the State of California to cause
cancer. WASH HANDS AFTER
HANDLING. For more information
go to www.P65Warnings.ca.gov/
passenger-vehicle.
See California Proposition
65 Warning 0220 and the back
cover.
Vehicle Storage
{Warning
Batteries have acid that can burn
you and gas that can explode.
You can be badly hurt if you are
not careful. See Jump Starting -
North America 0291 for tips on
working around a battery without
getting hurt.
Infrequent Usage: Remove the
black, negative (−) cable from the
battery to keep the battery from
running down.
Extended Storage: Remove the
black, negative (−) cable from the
battery or use a battery trickle
charger.
Four-Wheel Drive
Transfer Case
When to Check Lubricant
Refer to Maintenance Schedule
0 311 to determine when to check
the lubricant. How to Check Lubricant
Automatic Transfer Case
1. Drain Plug
2. Fill Plug
To get an accurate reading, the
vehicle should be on a level
surface.
If the level is below the bottom of
the fill plug (2) hole, located on the
transfer case, some lubricant will
need to be added. Add enough
lubricant to raise the level to the
bottom of the fill plug (2) hole. Use
care not to overtighten the plug.

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Vehicle Care 255
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.Fuses Usage
F1 Run/Crank relay control/Horn switch/
Dome lamps
F2 –
F3 –
F4 Steering wheel controls
F5 Left headlamp low beam/Front left park
lamp/Left front side
marker/Left rear side
marker
F6 –
F7 –
F8 Mirror window module
F9 Instrument panel cluster
F10 –
F11 Door latches
F12 –

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256 Vehicle Care
FusesUsage
F13 OnStar/HVAC
F14 Radio/Infotainment
F15 RAP accessory relay control/Shifter control/
Shifter solenoid/Wiper
relay control/Washer
pump relay control/
Rear defog relay
control
F16 CGM
F17 Left rear side marker/ Right front turn lamp/
Left rear stop lamp/
Left front turn lamp/
Right rear stop lamp
F18 Airbag/Sensing and diagnostic module/
Automatic occupant
sensing module
F19 –
F20 Amplifier
F21 –
F22 – Fuses
Usage
F23 Data link connector/ USB front
F24 HVAC ignition
F25 Driver door latch
F26 –
F27 –
F28 Instrument panel cluster/Automatic
sensing display
F29 Rear vision camera/ Transfer case control
module (4WD)/Inside
rear view
F30 –
F31 Front camera/Rear park assist
F32 Steering wheel controls backlighting
F33 Heated steering wheel/Spare
F34 Front ventilated seats Fuses
Usage
F35 Park/Reverse/Neutral/ Drive/Low display/
Wireless charging
module/USB rear
F36 Discrete logic ignition sensor
F37 –
F38 –
F39 Auxiliary power outlet 2
F40 –
F41 Auxiliary power outlet 1/Cigarette
lighter
F42 Left power window
F43 Driver power seat
F44 Auxillary power outlet
F45 Right power window
F46 Passenger power seat

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Vehicle Care 257
RelaysUsage
K1 Retained accessory power
K2 Run/Crank
K3 –Wheels and Tires
Tires
Every new GM vehicle has
high-quality tires made by a
leading tire manufacturer. See
the warranty manual for
information regarding the tire
warranty and where to get
service. For additional
information refer to the tire
manufacturer.
{Warning
.Poorly maintained and
improperly used tires are
dangerous.
.Overloading the tires can
cause overheating as a
result of too much
flexing. There could be a
blowout and a serious
crash. See Vehicle Load
Limits 0154.
(Continued)
Warning (Continued)
.Underinflated tires pose
the same danger as
overloaded tires. The
resulting crash could
cause serious injury.
Check all tires frequently
to maintain the
recommended pressure.
Tire pressure should be
checked when the tires
are cold.
.Overinflated tires are
more likely to be cut,
punctured, or broken by
a sudden impact —such
as when hitting a pothole.
Keep tires at the
recommended pressure.
.Worn or old tires can
cause a crash. If the
tread is badly worn,
replace them.
(Continued)