Just to add an update after reading this again....Someone else had a 2010 GT500 with a bad PCM in one of the forums...maybe this one or the other popular one! They couldn't locate a replacement however I remember that there was a shop (I think in CA) that worked on the car for the owner and they were talented enought to take what I believe was a PCM from a 2010 Mustangf V8 and modify it to work with his GT500 and it fixed his issues. Just an optoin incase it ever happens to someone. I had this info printed out and in make stack of papers just in case I ever needed to have them contacted for a PCM replacement.