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:

    Chassis refinements
    Chassis tuning has focused on achieving a smooth, quiet, refined ride. The DTS features an all-new front cradle design, with the engine mounted to the cradle, and the cradle mounted to the body ra ...

    Low Fuel Warning
    When the fuel in the vehicle becomes low, a pop-up displays “Fuel is low. Search for nearby Gas station?” 1. Press OK to show a list of nearby gas stations. 2. Press GO next to the desired gas s ...

    End a Call
    Push . System responds: “Call ended.” ...