GM Vehicle Anti-Theft System - Passkey Relay Wiring Diagram Latched On/Off Output Using Two Momentary Negative Pulses - Negative Output (3 relays). If you own a GM vehicle with PassKey III antitheft or a previous PassKey II or When you insert the key, electrical contacts mounted on the lock cylinder .

removal and installation instructions, illustrations, wiring diagrams. The Passlock I system is considered the replacement for the GM Vehicle Anti- Theft System (VATS).

The Passlock II and III (PK3) systems followed shortly after . The GM Passlock System is a key-based, fuel shutdown, anti-theft system Passlock I Wiring Diagram This wire is located in the vehicle's three-wire Passlock. GM PASS- Key III Plus, bypass for vehicles equipped with the new style hybrid Passlock .

chart below will tell you by vehicle which wiring diagram to use.A subscription includes up-to-date the manufacturer’s technical service bulletins, step-by-step removal and installation instructions, illustrations, wiring diagrams, component locations, torque specifications, fluid types and capacities and maintenance schedules. Please study the following information carefully WHEN INSTALLING REMOTE START systems on a or later GM car or truck.. Introduced in , GM has changed the VATS anti theft system to Pass-Lock system.

This is a similar device to the VATS system, in that there is . Get the BEST auto repair information schematron.org and schematron.org are the two best shop manuals—period!

Unlike the cheaper Haynes and Chilton manuals that cover multiple year models, leaving the exact information you need to fix your car, these . Some GM vehicles come with a factory-installed anti-theft system commonly referred to as the passlock or passkey.

Due to glitches with these built-in security systems, GM owners may experience problems trying to start their vehicles. Jul 14,  · OK, GM security system lesson. Passkey 1 and Passkey 2 have a resistor chip in the key.

Easy to bypass like Woodbender mentioned. Passkey 3 is a transponder based system, and the most widely used system in current model GM vehicles. ID with a small PK3 visible on the key, and keys are expensive.

($$50).GM Passlock Security FixHow to Bypass the stupid GM passlock in General Board