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:

    Using the Tire Sealant and Compressor Kit without Sealant to Inflate a Tire (Not Punctured)
    To use the air compressor to inflate a tire with air only and not sealant: If a tire goes flat, avoid further tire and wheel damage by driving slowly to a level place. Turn on the hazard warning fl ...

    Instantaneous Economy and Active Fuel Management™ Indicator
    If the vehicle has this display, press the trip/fuel button until INST ECON V8 displays. This display shows the current fuel economy at a particular moment and will change frequently as driving condit ...

    Cruise Control
    WARNING Cruise control can be dangerous where you cannot drive safely at a steady speed. So, do not use the cruise control on winding roads or in heavy traffic. Cruise control can be dangerous on sl ...