Once a PCm has been Skim enabled a dealer cannot turn it off. That is something Chrysler has kept out of the dealers hands. That is why on late model cars swapping modules to test for a problem can be a very expensive proposistion. They have the abiliy to turn on the security featur of another module that doese not have it at the time just by being in the same circuit. They can get a new skim and key and program it to match the PCM. There is a company in Michigan that has the ability to turn off the skim by wiping the entire PCM clean. Think of it this way though. If you have a pcm that is theft enabled you can wire in the SKIM module and program the key and have a nice theft deterent or a good way to keep your teenager from taking it out one night when you are not home.