GM Service Manual Online
For 1990-2009 cars only

With the key in the ignition, you can turn the key to four different positions.


Object Number: 810336  Size: B3
A (OFF): This is the only position in which you can remove the key. This position locks the ignition and transaxle.

Notice: Using a tool to force the key from the ignition switch could cause damage or break the key. Use the correct key and turn the key only with your hand. Make sure the key is all the way in. If none of this works, then your vehicle needs service.

B (ACCESSORY): This position allows you to use things like the radio and the windshield wipers while the engine is off. This position will also allow you to turn off the engine. Use ACCESSORY if you must have your vehicle in motion while the engine is off, for example, if your vehicle is being pushed or towed.

C (ON): This is the position that the switch returns to after you start your engine and release the key. The switch stays in ON when the engine is running. But even when the engine is not running, you can use ON to operate your electrical power accessories, and to display some instrument panel warning lights.

D (START): This position starts the engine. When the engine starts, release the key. The ignition switch will return to ON for normal driving. If the engine is not running, ACCESSORY and ON are positions that allow you to operate your electrical accessories, such as the radio.

Retained Accessory Power (RAP)

With RAP, the power windows, the audio system, the sunroof and the Automatic Level Control will continue to work up to 10 minutes after the ignition key is turned to OFF and none of the doors are opened.