Ending a Call

Turn or press the MENU/SELECT knob and select Hang Up.

    See also:

    OnStar Mobile App
    With an iPhone® or Android™-based mobile device, an OnStar mobile app can be downloaded. The vehicle can be remote started, if equipped, or the doors can be unlocked from anywhere there is ...

    Blank Display
    This display shows no information. ...

    Starting the Engine
    When first starting the vehicle, the engine idle speed will be elevated to allow the catalytic converter, an emissions control device, to quickly reach operating temperature. After approximat ...