See also:

Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn the ignition to LOCK/OFF in each shift lever position. - The ignition should turn to LOCK/OFF only when the shift lever is in P (Pa ...

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 ...

Place a Call Using a Stored Number
1. Push . System responds: “OnStar ready.”. 2. Say “Call <name tag>.”. System responds: “OK, calling <name tag>.” ...