See also:

Service All-Wheel Drive Light
This light should come on briefly when you turn on the ignition, as a check to show you it is working. The service all-wheel drive light comes on to indicate that there may be a problem with ...

Call Waiting
Call waiting must be supported on the Bluetooth phone and enabled by the wireless service carrier to work. • Press to answer an incoming call when another call is active. The original call i ...

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 ...