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:

    Skidding
    There are three types of skids that correspond to the vehicle's three control systems: Braking Skid — wheels are not rolling. Steering or Cornering Skid — too much speed or steering in a c ...

    Navigation System
    If the vehicle has a navigation system, there is a separate navigation system manual that includes information on the radio, audio players, and navigation system. The navigation system prov ...

    SIDE BLIND ZONE ALERT SYSTEM TEMPORARILY UNAVAILABLE
    This message indicates that the SBZA system is disabled because the sensor is blocked and cannot detect vehicles in the blind zone. The sensor may be blocked by mud, dirt, snow, ice, or slush ...