I am NOT planning on stealing cars NOR do I want to know the exact details of defeating this system. However, I do NOT relish the idea of paying some bozo $60 for ONE duplicate key.
I have determined the resistance of the pellet resistor on my key.
How do I expose two contacts of the anti-theft system so that I could make an “outlet”, into which I could “plug” a small resistor?
Then what I’d like to do is go to the local keystore and have them make up some “resistor-less” duplicate keys for a few bucks.
I could then make a few resistor “plugs” for just pennies and the anti-theft feature is NOT defeated if you remember to remove the resistance “plug” as well as the key.
I tried looking, but apparently it’s too early in the morning for me to find an example right now, but, on cars with remote starters that use that anti-theft system you have to get a module that you actually put one of the keys inside so that when the system tries to start the car it can trick the car into thinking the key is in the ignition. You could possibly get one of those modules and wire it in, or atleast read the directions and see if you can figure out what it get’s wired into and do that.
On a side note, that always really bugged me, if I wanted to steal a car that I knew used that system and I knew had a remote starter, I’d know exactly where to get the key.
Ok lets defeine this a bit better. What kind of car is this?
GM has a few different Anti theft systems.
MATS, VATS and grr cannto recall the transponder name, might well be PASS.
As you mention 60 dollars for a spare key I am guessing is a newer GM where the resistor is imbedded into the head of the key and not a chip visible on the key itself.
There is at least one way I can think of to bypass both the VATS and PASS systems as long as you have a working key and chip.
This will seriously compromise your security on your vehicle. I would not suggest doing such a thing.
60 Dollars is not such a bad deal on a Transponder GM key, but way to much if it is a VATS. Break down and pay the 60 dollars. WIll be much more if you muck things up or lose the key.
Osip
I don’t know what kind of car you have, but my VATS system was easily defeated with a PCM reprogram via software and a laptop. The software is called Tunercat. Around $40 for the software, and another $10 for the PCM definition file (the instruction for your vehicles computer). The cable costs another $50, so it may not be the right choice for you. But it can be disabled without hardware “tricking” systems.
wolf-meister.
While I have sympathy for your situation, we don’t allow the discussion of things which are illegal in the U.S.
At least you got a few informed opinions.
Closed.
samclem GQ moderator