Thank you all for replying. When you did the risistor in place of the start relay, did it work? The last code that I was getting was 0513 and 0633, both seemed to speak of a immobilizer key. probably not a "key" but rather something that it was not seeing. I hit it hard again this evening and still seem to have the same conclusion. I'm not going to rush into anything else, just wait to see if there is a code issue or file issue that GMPX may be able to help with. Any other info is still covetted.