See also:

Outside Heated Mirrors
When the rear window defogger is turned on, the driver’s and passenger’s outside rearview mirrors also heat to help clear them of ice, snow, and condensation. ...

Tire Pressure Light
This light will come on briefly when you turn the ignition to RUN. This light will also come on when one or more of your tires are significantly underinflated. A CHECK TIRE PRESSURE DIC mes ...

TTY Users
OnStar has the ability to communicate to the deaf, hard-of-hearing, or speech-impaired customers while in the vehicle. The available dealer-installed TTY system can provide in-vehicle acce ...