See also:

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the v ...

Map Adjustments
The system lets you adjust the scale of view on the map. Also, as you drive, the map scrolls automatically based on the direction of travel. ...

Power Seat Adjustment
WARNING You can lose control of the vehicle if you try to adjust a driver seat while the vehicle is moving. The sudden movement could startle and confuse you, or make you push a pedal when y ...