See also:

Compass
The vehicle may have a compass display in the Driver Information Center (DIC). See Compass for more information. ...

Playing a CD or MP3 CD (Radio with CD)
Press the CD button if there is a disc in the player; it begins playing. Information about the disc and current track is shown on the display depending on the data stored. Selecting a CD Track Us ...

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if ...