See also:

DVD-V (Video) Display Buttons
Once a DVD-V is inserted, the radio display menu shows several icons. Press the softkeys under any icon during DVD playback. See the icon list below for more information. A rear seat passenger can n ...

Using the Radio
(Power/Volume): Press to turn the system on and off. Turn clockwise or counterclockwise to increase or decrease the volume. (Information) (AM-FM Radio and AM-FM Radio with CD): Press to switch the ...

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 vehic ...