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:

    Other Navigation Services Available from OnStar
    OnStar eNav: Allows subscribers to send destinations from Google Maps and MapQuest.com to their Turn-by-Turn Navigation or screen-based navigation system. When ready, the directions will be ...

    Engine Power Messages
    ENGINE POWER IS REDUCED This message displays when the engine power is being reduced to protect the engine from damage. There could be several malfunctions that might cause this message. Redu ...

    When the System Does Not Seem to Work Properly
    The rear vision camera system might not work properly or display a clear image if the following occurs: - It is dark. - The sun or the beam of headlamps is shining directly into the camera l ...