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:

    Tachometer
    The tachometer displays the engine speed in revolutions per minute (rpm). ...

    Power Assist Steps
    The vehicle may have power assist steps. To enable or disable the power assist steps push . The power assist steps automatically extend from beneath the vehicle on the side in which the door ha ...

    Lamp Messages
    AFL (ADAPTIVE FORWARD LIGHTING) LAMPS NEED SERVICE This message displays when the Adaptive Forward Lighting (AFL) system is disabled and needs service. See your dealer. See Adaptive Forwa ...