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:

    XLR-V
    A performance-packed V edition of the XLR, fitted with a supercharged 4.4-liter V-8 that develops 443 hp at 6,400 rpm and 414 pounds-feet of torque at 3,600 rpm, goes on sale for 2006. A new six-s ...

    StabiliTrak® System
    The vehicle has an electronic stability control system called StabiliTrak. It is an advanced computer controlled system that assists with directional control of the vehicle in difficult driv ...

    Power Seat Adjustment
    WARNING You can lose control of the vehicle if you try to adjust a driver seat while the vehicle is moving. The sudden movement could startle and confuse you, or make you push a pedal when y ...