OnStar Services

See also:

Instrument Panel Illumination Control
The instrument panel brightness knob is located on the instrument panel next to the steering column. (Instrument Panel Brightness): Turn the knob clockwise or counterclockwise to brighten ...

Ending a Call
Turn or press the MENU/SELECT knob and select Hang Up. ...

Power Outlets
Accessory power outlets can be used to plug in electrical equipment, such as a cell phone or MP3 player. There are three accessory power outlets. The power outlets located below the climate c ...