GM Service Manual Online
For 1990-2009 cars only

Object Number: 923490  Size: A2

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

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.

(OFF): This is the only position from which you can remove the key. It also locks your ignition and transaxle. A warning chime will sound if you open the driver's door while the ignition is off and the key is left in the ignition.

ACC (ACCESSORY): This position lets you use things like the radio and windshield wipers while the engine is not running. To use ACC, turn the key clockwise to the first position. Use this position if your vehicle must be pushed or towed, but never try to push-start your vehicle. See Recreational Vehicle Towing .

(ON): This position unlocks the ignition. It is also the position to where the key returns after you start the engine and release the switch. The switch will stay in this position while the engine is running. But even while the engine is not running, you can use ON to operate your electrical accessories, and to display some instrument panel warning lights.

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

Retained Accessory Power (RAP)

Your vehicle has a Retained Accessory Power (RAP) feature which will allow some features to continue to work up to 10 minutes after the ignition is turned to off or until the driver's door is opened.

Your vehicle's sunroof and heated seats, if equipped, and the power windows also work this way. They will turn off after 10 minutes or if any door is open.