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:
ROTATE CONTROL TO
OFF POSITION
If the vehicle has the keyless
access system, this message
displays when the ignition is in
ACC/ACCESSORY and the shift
lever has just been moved to
P (Park). The message displays as
a rem ...
Seat Adjustment
Power Seats ...
Horn
Pressaon the steering wheel pad
to sound the horn. ...