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:
Control Buttons
The buttons used to control the XM radio are:
RADIO/BAND: Press to turn the radio on and choose between AM, FM, and XM, if
equipped.
SEEK / SEEK: Press to go to the previous or next
channel.
...
Customer Assistance Offices (Mexico)
To contact the Customer Assistance Center (CAC), use the phone numbers
listed in this section.
Customer assistance is available Monday through Friday, 08:00 to 20:00
hours, and Saturdays from 08: ...
READY TO LEARN
ELECTRONIC KEY # X
If the vehicle has the keyless
access system, this message
displays while matching new
transmitters to the vehicle.
See the keyless access information
for Remote Keyless Entry (RKE)
System ...