GM Service Manual Online
For 1990-2009 cars only

Object Number: 1410080  Size: A2

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

OFF: This is the only position from which you can remove the key.

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 in all the way. If none of this works, then your vehicle needs service.

ACC (Accessory): This is the position in which you can operate your electrical accessories. With the key in this position, the ignition and automatic transaxle will unlock. Use this position if your vehicle must be pushed or towed.

RUN : This is the position for driving to which the switch returns after you start the engine and release the switch. The switch stays in RUN when the engine is running. But even when the engine is not running, you can use RUN to operate your electrical accessories and to display some instrument panel cluster messages and warning lights.

START: This position starts the engine. When the engine starts, release the key. The ignition switch will return to RUN for normal driving.