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Uploaded on Mar 10, 2011
How to Override Bypass a GM Passlock 1 2 & VATS Factory Anti Theft System passkey
In GM cars, there is a bundle of three wires which go from the Body Control Module to the Ignition Switch. They are Black (analog return), White (power), and Yellow (analog resistor data). The Yellow wire is circuit #1836, and this is the wire that furnishes an analog signal to the Body Control Module to tell it that a key has been used to turn the lock cylinder to the ON position.
The three wires can be accessed by removing the radio from the dashboard, and reaching through a hole in the radio compartment toward the steering wheel. This article describes how to reach these wires and modify the circuit to bypass the passlock (vats) security module in the ignition switch.