GM Service Manual Online
For 1990-2009 cars only

Object Number: 1839823  Size: A3

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 the ignition and transaxle. A warning chime sounds if the driver's door is opened 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. 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 release the switch and the engine starts. 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 the electrical accessories, and to display some instrument panel warning lights. The battery could be drained if you leave the key in the ACC or ON position with the engine off. You might not be able to start your vehicle if the battery is allowed to drain for an extended period of time.

(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.

Key In the Ignition

Never leave your vehicle with the keys inside, as it is an easy target for joy riders or thieves. If you leave the key in the ignition and park your vehicle, a chime sounds, when the driver's door is opened. Always remember to remove the key from the ignition and take it with you. This locks your ignition and transaxle. Also, always remember to lock the doors.

The battery could be drained if the key is left in the ignition while your vehicle is parked . You might not be able to start your vehicle after it has been parked for an extended period of time.