Just google how to pass the vats system pass key , or remove the lower panle on the drivers side and look for a orange tube containing two white wires coming down from the steering colum get a ohms meter and and set it to 20 k and check the reading on your key by sticking a probe on each side of the key on the chip and find out the resistance value go to radio shack and by a resistor pack , cut the two wires leading to the fire wall and soulder your resister in between the two white wires you can be with in to points either way on the resister , i did this to put a remote start in my car and works great
You cannot bypass GM Vag passkey. The key has a specific resistance the allows the BCM to start the car.
Testimonial: "Thank you. I thought I could cut a few wires under the steering wheel, twist them together and hot wire the car - by passing the ignition switch."
As an alternate to the resistor idea, you could also go to Auto Zone or other parts store and pick up a 791 bypass, this comes with instructions on how to bypass VATS. Not sure if this works without a remote start though. I bought a remote start/keyless entry for my 93 lesabre custom and the bypass works wonders. Car runs for 25 minutes without having the key in the ignition.
Be careful as the resistor will just bypass key and lock, while the core of the VATS system will remain in the loop.
There is a great DIY way of bypassing the VATS system entirely, including the TDM (that goes faulty very often with the age of the car). You can find the write-up here: http://newrockies.ca/vatsbypass
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