I have an 03 here that the ecu went bad. I have another one that show to be an 04. It works on the truck but a few things such as temp gauge does not work. I tried to flash the org os in it with my pass thru pro2. Chrysler has made some changes since I last used it and due to some software issues ( that they say they are aware of) I can not get it to work. Dealer says since it?s an 04 (same part number though)he can?t flash it. Is there any other way to change the vin number? I think if I change vin and read with hpt the supplied file should fix the issues.