See also:

Add-on Electrical Equipment
The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment. Added electrical equipment may interfer ...

Navigation
OnStar navigation requires the Directions and Connections service plan. Push to receive directions or have them sent to the vehicle navigation screen. Destinations can also be forwarded to the v ...

Playing the Radio
(Power/Volume): 1. Press to turn the audio system on and off. 2. Turn to increase or to decrease the volume. 3. Press and hold for more than two seconds to turn off the navigation system, the Rea ...