bypass gm security, 89 pontiac firebird

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omegainc

Member - Posts: 3

Joined: April 27, 2003

Location: United States

Posted: November 20, 2003 at 4:10 PM / IP Logged

how do i permanetly bypass gms security? i think my security module is bad and my car wont sytart. i have no security light on my dash at all anymore.

avxtech

Member - Posts: 35

Joined: September 09, 2003

Location: United States

Posted: November 21, 2003 at 10:56 AM / IP Logged

What year and model is the car?

omegainc

Member - Posts: 3

Joined: April 27, 2003

Location: United States

Posted: November 21, 2003 at 11:55 AM / IP Logged

89 pontiac firebird 5.0tbi

avxtech

Member - Posts: 35

Joined: September 09, 2003

Location: United States

Posted: November 21, 2003 at 4:10 PM / IP Logged

ok, thats the VATS system. You need to have an OHM meter to measure the resistance from the pellet on the key. Put the red lead from your meter on one side of the pellet, and the black lead on the other side of the pellet, DONT TOUCH ANY METAL PART OF THE KEY WITH YOUR FINGERS. Find a resistor that matches the value you measured with your meter.

Now find the VATS wires at the ignition harness. Look for a thin orange tubing, it will have 2 very thin (18-20 ga.) white wires. Cut both wires. Now, then end of the 2 wires that go towards the key, tape up and stash away. Strip back the other two wires going back towards the car and bridge the two with the resistor, soder and tape.

good luck

omegainc

Member - Posts: 3

Joined: April 27, 2003

Location: United States

Posted: November 22, 2003 at 9:48 AM / IP Logged

tryed that only problem is it didnt work that just makes pretend that the key is in the egintion all the time doesnt make the car startt though

HotRod53F100

Copper - Posts: 84

Joined: May 12, 2002

Location: United States

Posted: November 22, 2003 at 8:50 PM / IP Logged

My son has an '89 Camaro RS with a 2.8 that had the same problem. His car has a relay mounted in the drivers side kick pad that allows the car to start. When the key resistance is satisfied, the relay pulls in to allow the car to start. What we did with his was to engineer our own active interlock. We glued a magnetic switch under the console between the 2 power window switches. We connected one side to 12V and connected the other side to the coil of the relay in the kickpad. In order to start the car you need to lay a magnet on the console between the switches. There used to be a system like this called

"the silent system". If you don't have the right resistance in your key the secutity light will still come on inside the cluster, but the car will start. I'm not sure if your Pontiac is the same, but good luck!

HotRod

avxtech

Member - Posts: 35

Joined: September 09, 2003

Location: United States

Posted: November 25, 2003 at 3:56 PM / IP Logged

If that doesnt work you dont have the right resistance, also, make sure that you soder resister in and DONT use any soderless connectors!

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bypass gm security, 89 pontiac firebird

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