GM Service Manual Online
For 1990-2009 cars only

The Personal Automotive Security System (PASS-Key II®) is standard equipment on the vehicle. The system is designed to prevent vehicle theft by disabling the engine unless an ignition key with a specific electrical resistance is used in the ignition cylinder. The PASS-Key II® system and the universal theft deterrent operate separately. The universal theft deterrent system is optional. The PASS-Key II® system includes the following components:

    • The ignition key
    • The ignition cylinder
    • The body control module (BCM)
    • The starter relay
    • The powertrain control module (PCM)