See also:

Satellite Radio Antenna
For vehicles with XM satellite radio service, the antenna is located on the roof of the vehicle. Keep the antenna clear of obstructions for clear radio reception. ...

Repair Facility
GM also recommends that you choose a collision repair facility that meets your needs before you ever need collision repairs. Your GM dealer may have a collision repair center with GM-trained techn ...

Using the Directory Command
The directory command lists all of the name tags stored by the system. To use the directory command: 1. Press and hold for two seconds. The system responds with “Ready” followed by a tone. ...