GM Service Manual Online
For 1990-2009 cars only

The ignition switch has five different positions.


Object Number: 1839828  Size: A3
A (ACC/ACCESSORY): This position allows you to use the radio, power windows and the windshield wipers when the engine is off. To get into ACC/ACCESSORY, push in the key and turn it toward you. The steering wheel will remain locked, just as it was before you inserted the key.

B (LOCK): This position locks the ignition, steering wheel and transmission. You will only be able to remove the key when the ignition is turned to LOCK.

C (OFF): This position turns off the engine, but leaves the steering wheel unlocked. Use OFF if you must have the vehicle in motion while the engine is off.

D (ON/RUN): This position can be used to operate the electrical accessories and to display some instrument panel cluster warning and indicator lights. The switch stays in this position when the engine is running. If you leave the key in the ACC/ACCESSORY or ON/RUN position with the engine off, the battery could be drained. You may not be able to start the vehicle if the battery is allowed to drain for an extended period of time.

E (START): This is the position that starts the engine. When the engine starts, release the key. The ignition switch returns to ON/RUN for driving. A warning tone will sound when the driver door is opened, the vehicle is parked, and the key is in the ignition.