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:
Reporting Safety Defects to the United States Government
If you believe that your vehicle has a defect which could cause a crash or
could cause injury or death, you should immediately inform the National Highway
Traffic Safety Administration (NHTSA) in ad ...
Vehicle Messages
Messages displayed on the DIC
indicate the status of the vehicle or
some action that may be needed
to correct a condition. Multiple
messages may appear one after
another.
The messages that ...
Power Door Locks
Instrument Panel
Front Door Panels
(Lock): Press to lock the doors.
(Unlock):
Press to unlock the doors. ...