GM Service Manual Online
For 1990-2009 cars only

Object Number: 1410037  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. For a vehicle with an automatic transaxle , the shift lever must be in PARK (P) with the ignition in OFF to remove the key. For a vehicle with a manual transaxle, the shift lever must be in REVERSE (R) to remove the key. A warning chime will sound if you open the driver's door while the ignition is off and the key is in the ignition.

ACC (ACCESSORY): This position unlocks the transaxle. It also 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 is where the key returns to after you start the engine and release the key. The ignition 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.