See also:

Power Outlets
The accessory power outlets can be used to connect electrical equipment, such as a cell phone or MP3 player. There are four accessory power outlets in the following locations: below the CD slot, ...

MP3 Music Menu
Press the Menu screen button while that source is active to access the menu. Press any of the following buttons on the MP3 Menu: Shuffle Songs: Press to play the tracks randomly. Press again to stop ...

How OnStar Service Works
Automatic Crash Response, Emergency Services, Crisis Assist, Stolen Vehicle Assistance, Vehicle Diagnostics, Remote Door Unlock, Roadside Assistance, Turn-by-Turn Navigation, and Hands-Free Calling ar ...