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:

    Traction Off Light
    This light comes on briefly while starting the engine. If it does not, have the vehicle serviced by your dealer. This light comes on when the Traction Control System (TCS) has been turned ...

    Replacing Brake System Parts
    The braking system on a vehicle is complex. Its many parts have to be of top quality and work well together if the vehicle is to have really good braking. The vehicle was designed and tested wit ...

    Additional Factors Affecting System Operation
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