93 buick lesabre custom passkey ii prob

Is there a way to defeat the passkey II system on a 93 Buick LeSabre?

Key has a black insert with a small metal wedge in it. When you put the key in and turn the ignition to start, you get all the normal dash lights. Turn it to crank it over and it does nothing at all. It will not even attempt to turn the starter, not a single noise of movement of anything. Release the key and all is normal.

Being a 93 I don't care about having it "secured" by this system. Battery is fully charged, fuel level is fine, just no starter action when you turn the key all the way.

This may be a typical system to GM's

those have a pellet on the key it just has a VATS system that needs a resistor inline cut one vats wire insert resistor to the side of the cut wire furthest from switch and other side of resistor to other vats wire that not cut  to find the value of resistor jus meter the pellet in key using DMM in ohms setting

Thanks for all the info.

The car died while it was being driven and had happened a couple times before but always restarted. This time, not. Don't think it is the starter but a good place to look first.

A Chevy site had a similar topic and there was discussion on the BCM module being lose in a holder and moves around causing bad connections sometimes. I talked to a Buick dealer and they said the security system operation is in the BCM. Beyond that they would only say, "bring it on in (cha-ching)". Will have to try and find the BCM and make sure it is secured and has no lose or corroded connections.

Measured the key and it was 2.99 K ohms, with the wire to the BCM I would guess it is looking for a 3K value. Will try doing the resister at the wire harness if all else fails. Would make a termination plug with the resister so no cutting and can be easily reversed. Don't need "security" on a 93 anyway.

If anyone knows where the BCM is that would help or I can call my helpful (not) Buick dealer again.

Couldnt one just put the right resister across the 2 wires without cutting them, its no big deal to cut them and by putting a resister in it bypasses the anti-theft but would a resister down stream from the resister in the key have any adverse ffects.

Need to cut wires- if you just splice in the resistor then you have created a parallel resistor circuit (the one in the key and the one you added) and the total resistance is not what you want-- they teach this in electronics school.

You would have to always use a key with no chip in it..or grind yours away disabling it-- it is much easier just to cut the wires and solder in the new resistor..