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VAT is an acronym for Vehicle Anti-theft System. It is usually referred to as a pass key which stands for (Personal Automotive Security System) and is a security feature adopted by several different GM model vehicles from 1986 to 2005. Every VATS key produced with a unique resistor on the key blade and possesses a possible codes of 1 out of 15 values. By assigning a vats key with the correct resister pellet, the driver inserts the key blade into the ignition lock, which then make a contact with the resister pellet on the key so the electronic VATS system can reads its value. If the key has a match resister pellet, then the car will start, otherwise, then the engine will be disabled.
If you have a functional vats key, and you want to know the code, you can measure its value by placing the ohm meter leads on the VATS key resister pellet. Once you find the pellets ohm value of the resister, you can determine the key code by looking up the resistance value in the chart below. If the value that you read from the ohm doesn't found on the chart, just pick the closest value.
If you lost all your keys and you don’t know your key code, call Okey DoKey Locksmith. Our mobile technicians can diagnose your vehicle to find your VATS pellet code, decode the cuts on your key.
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