GM Service Manual Online
For 1990-2009 cars only

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


Object Number: 1223852  Size: B3

Notice: If your key seems stuck in LOCK/OFF and you cannot turn it, be sure you are using the correct key; if so, is it all the way in? If it is, then turn the steering wheel left and right while you turn the key hard. Turn the key only with your hand. Using a tool to force it could break the key or the ignition switch. If none of these work, then your vehicle needs service.

(OFF/LOCK): This position locks your steering column in a vehicle with a manual transmission. It is a theft-deterrent feature. You will only be able to remove your key when the ignition is turned to LOCK. If you have an automatic transaxle, the ignition switch can't be turned to LOCK unless the shift lever is in PARK (P).

Caution: If you have a manual transaxle removing the key from the ignition switch will lock the steering column and result in a loss of ability to steer the vehicle. This could cause a collision. If you need to turn the engine off while the vehicle is moving, turn the key to ACC.

ACC (ACCESSORY):  An electrical power ON position in which you can operate some of your electrical power accessories. Use this position if your car must be pushed or towed. When leaving your vehicle, turn the ignition key from ACC position to the OFF/LOCK position. Then remove the key. This will help keep the battery from running down.

(RUN):  This is the position the switch returns to after you start your engine and release the switch. The switch stays in the RUN position when the engine is running. But even when the ignition is not running, you can use RUN to operate your electrical accessories and to display some warning and indicator lights.

(START):  This position starts the engine. When the engine starts, release the key. The ignition switch will return to RUN for normal driving. Note that even if the engine is not running, the positions ACC and RUN are electrical power on positions that allow you to operate your electrical accessories, such as the radio and ventilation fan. A warning tone will sound if you open the driver's door when the key has not been removed from the ignition.

Retained Accessory Power (RAP)

Your vehicle is equipped with a retained accessory power (RAP) feature which will allow certain features on your vehicle to continue to work for up to 10 minutes after the ignition key is turned off. Your radio, wipers, power windows (if equipped), sunroof (if equipped) and rear power outlet will work when the ignition key is in RUN or ACC. Once the key is turned from RUN to OFF/LOCK, these features will continue to work for up to 10 minutes or until the driver's door is opened.