Multi-Band Antenna

The antenna located on the roof of the vehicle is used for the OnStar, XM Satellite Radio Service System, and GPS (Global Positioning System), if the vehicle has these features. Keep the antenna clear of obstructions for clear reception.

If the vehicle has a sunroof and it is open, the performance of OnStar, XM, and GPS can be affected.

    See also:

    Tire Inspection
    We recommend that the tires, including the spare tire, if the vehicle has one, be inspected for signs of wear or damage at least once a month. Replace the tire if: The indicators at three or mo ...

    Door Locks
    To lock or unlock a door manually: Sedan and Wagon Base Model From the inside, use the door lock knob on the top of doors. Sedan and Wagon Uplevel Model From the inside, for a front door pull ...

    Arming the System
    To arm the system: 1. Open the door. 2. Lock the door with the transmitter. The security light should come on and stay on. 3. Close all doors. The security light should go off after about 3 ...