GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
Vehicle Care 259
Vehicle Care
General Information
General Information . . . . . . . . . . 260
California Proposition65 Warning . . . . . . . . . . . . . . . . . 260
California Perchlorate Materials Requirements . . . . . 261
Accessories and Modifications . . . . . . . . . . . . . . . . 261
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 261
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 262
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 264
Engine Oil . . . . . . . . . . . . . . . . . . . . 269
Engine Oil Life System . . . . . . . 271
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . 272
Engine Air Filter Life System . . . . . . . . . . . . . . . . . . . . . . 273
Engine Air Cleaner/Filter . . . . . . 273
Cooling System . . . . . . . . . . . . . . 275
Engine Overheating . . . . . . . . . . 279
Washer Fluid . . . . . . . . . . . . . . . . . 281
Brakes . . . . . . . . . . . . . . . . . . . . . . . 281
Brake Fluid . . . . . . . . . . . . . . . . . . . 282 Battery - North America . . . . . . 283
All-Wheel Drive . . . . . . . . . . . . . . . 284
Starter Switch Check . . . . . . . . . 284
Park Brake and P (Park)
Mechanism Check . . . . . . . . . . 285
Wiper Blade Replacement . . . . 285
Windshield Replacement . . . . . 286
Gas Strut(s) . . . . . . . . . . . . . . . . . . 286
Headlamp Aiming
Front Headlamp Aiming . . . . . . 288
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 288
Halogen Bulbs . . . . . . . . . . . . . . . . 288
LED Lighting . . . . . . . . . . . . . . . . . 288
Electrical System
Electrical System Overload . . . 289
Fuses and Circuit Breakers . . . 289
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 290
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 293
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 295
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 297
All-Season Tires . . . . . . . . . . . . . . 298
Winter Tires . . . . . . . . . . . . . . . . . . 299
Summer Tires . . . . . . . . . . . . . . . . 299 Tire Sidewall Labeling . . . . . . . . 300
Tire Designations . . . . . . . . . . . . . 302
Tire Terminology and
Definitions . . . . . . . . . . . . . . . . . . 302
Tire Pressure . . . . . . . . . . . . . . . . . 305
Tire Pressure for High-Speed
Operation . . . . . . . . . . . . . . . . . . . 306
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . 307
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . 308
Tire Inspection . . . . . . . . . . . . . . . . 312
Tire Rotation . . . . . . . . . . . . . . . . . 312
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 313
Buying New Tires . . . . . . . . . . . . . 314
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 315
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 316
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 317
Wheel Replacement . . . . . . . . . . 318
Tire Chains . . . . . . . . . . . . . . . . . . . 318
If a Tire Goes Flat . . . . . . . . . . . . 319
Tire Sealant and Compressor Kit . . . . . . . . . . . . . 321
Storing the Tire Sealant and Compressor Kit . . . . . . . . . . . . . 327
Tire Changing . . . . . . . . . . . . . . . . 328
GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
Vehicle Care 289
Electrical System
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.
