Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
326 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . 327
California Perchlorate
Materials
Requirements . . . . . . . . . . . . . 327
Accessories and
Modifications . . . . . . . . . . . . . . 327
Vehicle Checks
Doing Your Own
Service Work . . . . . . . . . . . . . . 328
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . 329
Engine Compartment
Overview . . . . . . . . . . . . . . . . . . . . 331
Engine Oil . . . . . . . . . . . . . . . . . . . . 332
Engine Oil Life System . . . 335
Automatic Transmission
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . 336
Engine Air Filter Life
System . . . . . . . . . . . . . . . . . . . . . . 336
Engine Air Cleaner/
Filter . . . . . . . . . . . . . . . . . . . . . . . . . 337
Cooling System . . . . . . . . . . . . 338
Engine Overheating . . . . . . 342
Washer Fluid . . . . . . . . . . . . . . . . 343
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 344
Brake Fluid . . . . . . . . . . . . . . . . . . 345
Battery - North
America . . . . . . . . . . . . . . . . . . . . . 346
All-Wheel Drive . . . . . . . . . . . . . 347
Park Brake and P (Park)
Mechanism Check . . . . . . . 347
Wiper Blade
Replacement . . . . . . . . . . . . . . 347
Windshield
Replacement . . . . . . . . . . . . . . 349
Gas Strut(s) . . . . . . . . . . . . . . . . . 349
Headlamp Aiming
Front Headlamp
Aiming . . . . . . . . . . . . . . . . . . . . . . . 350
Bulb Replacement
Bulb Replacement . . . . . . . . 350
LED Lighting . . . . . . . . . . . . . . . . 350
Front Turn Signal
Lamps . . . . . . . . . . . . . . . . . . . . . . . 350
Back-Up Lamps . . . . . . . . . . . . . 351
Electrical System
Electrical System
Overload . . . . . . . . . . . . . . . . . . . . 352
Fuses and Circuit
Breakers . . . . . . . . . . . . . . . . . . . . 353
Engine Compartment
Fuse Block . . . . . . . . . . . . . . . . . 354
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 360
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 364
All-Season Tires . . . . . . . . . . . 365
Winter Tires . . . . . . . . . . . . . . . . 366
Summer Tires . . . . . . . . . . . . . . 366
Tire Sidewall Labeling . . . . 367
Tire Designations . . . . . . . . . . 369
Tire Terminology and
Definitions . . . . . . . . . . . . . . . . . 370
Tire Pressure . . . . . . . . . . . . . . . 372
Tire Pressure for
High-Speed
Operation . . . . . . . . . . . . . . . . . . 374
Tire Pressure Monitor
System . . . . . . . . . . . . . . . . . . . . . . 375
Tire Pressure Monitor
Operation . . . . . . . . . . . . . . . . . . 376
Tire Inspection . . . . . . . . . . . . . 380
Tire Rotation . . . . . . . . . . . . . . . . 381
When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . . . . 382
Buying New Tires . . . . . . . . . 383
Different Size Tires and
Wheels . . . . . . . . . . . . . . . . . . . . . . 385
Uniform Tire Quality
Grading . . . . . . . . . . . . . . . . . . . . . 385
Wheel Alignment and Tire
Balance . . . . . . . . . . . . . . . . . . . . . 387
Wheel Replacement . . . . . . 387
Tire Chains . . . . . . . . . . . . . . . . . . 388