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:

    Automatic EPB Release
    The EPB will automatically release if the vehicle is running, placed into gear, and an attempt is made to drive away. Avoid rapid acceleration when the EPB is applied, to preserve parking brake lini ...

    Doing Your Own Service Work
    WARNING! It can be dangerous to work on your vehicle if you do not have the proper knowledge, service manual, tools, or parts. Always follow owner manual procedures and consult the service ...

    Call Waiting
    Call waiting must be supported on the cell phone and enabled by the wireless service carrier. - Press to answer an incoming call when another call is active. The original call is placed on ...