See also:

Dome Lamps
The dome lamp controls are located in the overhead console. (Dome Lamp Override): Press to turn the lamps off, even when a door is open. (Door): Press to turn the lamps on automatically when ...

Navigation
This display is used for the OnStar or Navigation System Turn-by-Turn guidance. See OnStar Overview or the navigation manual, if the vehicle has navigation, for more information. ...

Underbody Maintenance
Use plain water to flush dirt and debris from the vehicle's underbody. Your dealer or an underbody car washing system can do this. If not removed, rust and corrosion can develop. ...