OnStar Services

See also:

Charging System Light
The charging system light comes on briefly when the ignition is turned on, but the engine is not running, as a check to show the light is working. It should go out when the engine is started. If t ...

DVD-A (Audio) Display Buttons
Once a DVD-A 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 ...

Horn
Pressa on the steering wheel pad to sound the horn. ...