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:

    English and Metric Unit Conversion
    To change the display units between English and metric units, see Driver Information Center (DIC) for more information. ...

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

    Curve Tips
    • Take curves at a reasonable speed. • Reduce speed before entering a curve. • Maintain a reasonable steady speed through the curve. • Wait until the vehicle is out of the curve bef ...