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:

    Cruise Control
    Your vehicle has cruise control. The controls are located on the end of the turn signal/ multifunction lever. (On): Move the switch to this position to turn the cruise control system on. ...

    Service Bulletins
    Service Bulletins give additional technical service information needed to knowledgeably service General Motors cars and trucks. Each bulletin contains instructions to assist in the diagnosis ...

    Automatic Dimming Rearview Mirror with OnStar® and Compass
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