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:

    DVD Distortion
    Video distortion can occur when operating cellular phones, scanners, CB radios, Global Position Systems (GPS)*, two-way radios, mobile faxes, or walkie talkies. It might be necessary to turn off the ...

    Integrated Trailer Brake Control System
    The vehicle may have an Integrated Trailer Brake Control (ITBC) system for electric trailer brakes. This symbol is located on the Trailer Brake Control Panel on vehicles with an Integrated Trailer ...

    Service Vehicle Messages
    SERVICE A/C (Air Conditioning) SYSTEM This message displays when the electronic sensors that control the air conditioning and heating systems are no longer working. Have the climate control system s ...