TTY Users

OnStar has the ability to communicate to the deaf, hard&-ofhearing, 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:

    Vehicle Security
    This vehicle has theft-deterrent features; however, they do not make it impossible to steal. ...

    Engine Overheating
    If the vehicle has the Duramax® Diesel engine, see the Duramax Diesel Supplement for more information. The vehicle has several indicators to warn of engine overheating. There is a coolant temperatu ...

    Center High-Mounted Stoplamp (CHMSL) and Cargo Lamp
    To replace one of these bulbs: 1. Remove the two screws and lift off the lamp assembly. A. Cargo Lamp B. Center High-Mounted Stoplamp (CHMSL) Bulb 2. On the reverse side of the lamp assembly, r ...