Vehicle and Power Issues
OnStar services require a vehicle electrical system, wireless service, and GPS satellite technologies to be available and operating for features to function properly. These systems may not operate if the battery is discharged or disconnected.
See also:
Reading Lamps
These lamps are located on the overhead console. These lamps come on automatically
when any door is opened.
For manual operation, press the button next to each lamp to turn it on or off. ...
Rear Window Defogger
The rear window defogger uses a warming grid to remove fog from the rear window.
(Rear Window Defogger):
Press to turn the rear window defogger on or off. The rear window defogger stays on for abou ...
When It Is Time for New Tires
Factors such as maintenance, temperatures, driving speeds, vehicle loading, and road conditions affect the wear rate of the tires.
Treadwear indicators are one way to tell when it is time for new t ...