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 access to all of the OnStar services, except Virtual Advisor and OnStar Turn–by–Turn Navigation.

    See also:

    Lamps
    Properly working headlamps, taillamps, and brake lamps are important to see and be seen on the road. - Signs that the headlamps need attention include dimming, failure to light, cracking, o ...

    Cooling System
    When it is safe to lift the hood: A. Engine Cooling Fan (Out of View) B. Engine Coolant Surge Tank and Pressure Cap WARNING An electric engine cooling fan under the hood can start up even ...

    Clock
    The analog clock is not connected with any other vehicle system and runs by itself. To adjust the clock, do the following: 1. Locate the adjustment button, near the lower left corner of the clock. ...