Cellular and GPS Antennas

Avoid placing items over or near the antenna to prevent blocking cellular and GPS signal reception.

Cellular reception is required for OnStar to send remote signals to the vehicle.

    See also:

    Control Buttons
    The knobs and buttons used to control the radio are: FM/AM: Press to choose between FM and AM. TUNE/TONE: Turn to search for stations.Press to enter the Tone menu. MENU/SELECT: Turn clockwi ...

    Remote Control
    To use the remote control, aim at the remote sensor located on top center of the video display screen and press the desired button. Objects blocking the line-of-sight can affect the function of the ...

    Blizzard Conditions
    Being stuck in snow can be a serious situation. Stay with the vehicle unless there is help nearby. If possible, use the Roadside Service (U.S. and Canada) or Roadside Service (Mexico). To ge ...