Sounds like you need to contact someone for document 1603. The passlock system is the anti-theft system used on the H3. It is controlled by the BCM, with inputs from the ignition switch.
Primarily if you attempt to turn the lock cylinder without a key inserted the BCM will not allow the vehicle to start. If the BCM reads the correct voltage at the passlock sensor (inside the ignition switch), it will send a password to the PCM. If this signal is not received by the CM, the fuel injectors are shut off and the vehicle will stall immediately.
__________________
Black Sheep Hummer Squadron
(ME TOO)
|