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 On Reminder
    The lamps on reminder light comes on when the lights are in use. ...

    Engine Cooling when Trailer Towing
    The cooling system may temporarily overheat during severe operating conditions. See Engine Overheating. ...

    Side Blind Zone Alert System
    If equipped, this feature allows the Side Blind Zone Alert System feature to be turned on or off. Press SELECT when Side Blind Zone Alert System is highlighted. Turn the Menu knob to select On ...