See also:

Playing Audio CD
When an audio CD is playing, the display shows the current track and the amount of time that track has been playing, the total amount of time on the disc, and the current time running on the disc. ...

Root Directory
The root directory is treated as a folder. If the root directory has compressed audio files, the directory displays as No Folder or ALL. ...

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 the v ...