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:

    Turn and Lane-Change Signals
    An arrow on the instrument panel cluster will flash in the direction of the turn or lane change. Move the lever all the way up or down to signal a turn. Raise or lower the lever until the a ...

    If a Tire Goes Flat
    It is unusual for a tire to blow out while driving, especially if the tires are maintained properly. See Tires  . If air goes out of a tire, it is much more likely to leak out slowly. But if ...

    Filling the Tank
    WARNING! Fuel vapor burns violently and a fuel fire can cause bad injuries. To help avoid injuries to you and others, read and follow all the instructions on the fuel pump island. Turn off t ...