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:

    CD/DVD Player Messages
    Disc Format Error: This message displays if the disc is inserted with the disc label wrong side up, or if the disc is damaged. Disc Region Error: This message displays if the disc is not from a corre ...

    Body Component Lubrication
    Lubricate all key lock cylinders, hood hinges, liftgate hinges, and the steel fuel door hinge unless the components are plastic. Applying silicone grease on weatherstrips with a clean cloth will m ...

    Transmission Messages
    SERVICE TRANSMISSION This message displays if there is a problem with the transmission. See your dealer. SHIFT TO PARK This message displays when the transmission needs to be shifted to P (Park). ...