GM Service Manual Online
For 1990-2009 cars only

Object Number: 809775  Size: A2

The vehicle is equipped with the PASS-Key® II (Personalized Automotive Security System) theft-deterrent system. PASS-Key® II is a passive theft-deterrent system. It works when the ignition key is inserted or removed from the ignition.

PASS-Key® II uses a resistor pellet in the ignition key that matches a decoder in the vehicle.

When the PASS-Key® II system senses that the wrong key has been inserted into the ignition, it shuts down the vehicle's starter and fuel systems. The starter will not work and fuel will not go to the engine for about three minutes. If someone tries to start the vehicle again with the wrong key, or uses another incorrect key during this time, the vehicle will not start. This discourages someone from randomly trying keys with different resistor pellets in an attempt to make a match.

The ignition key must be clean and dry before it is inserted in the ignition or the engine may not start. If the engine does not start and the SECURITY warning light on the instrument panel is flashing, the key may be dirty or wet. Turn the ignition off.

Clean and dry the key. Wait about three minutes and try again. If the vehicle still does not start, the ignition key may be faulty. Wait about three more minutes and try a spare ignition key. At this time, you may also want to check the fuse. See Fuses and Circuit Breakers for information on fuse location. If the starter will not work with the spare key, the vehicle needs service. See your dealer or a locksmith who can service the PASS-Key® II.

If a key is accidentally used that has a damaged or missing resistor pellet, the starter will not work. The SECURITY warning light on the instrument panel will then come on. But you do not have to wait three minutes before trying another ignition key.

See your dealer or a locksmith who can service the PASS-Key® II to have a new key made.

If the SECURITY warning light comes on the instrument panel while the vehicle is being driven, the engine will still be able to be started after it is turned off. The PASS-Key® II system, however, is not working properly and must be serviced by your dealer. The vehicle is not protected by the PASS-Key® II system when this happens.

If a PASS-Key® II ignition key is lost or damaged, see your dealer or a locksmith who can service PASS-Key® II to have a new key made. Also, see Roadside Assistance Program for more information.