On my wifes PAC, we just recently replaced the PCM. A friend of mine brought home a DRB and flashed it for us (also a new SKRIM module). Since I have replaced it though, the only things that dont work are the gas gauge, speedo, and the mileage read out (shows mileage but does not turn over). I did replace the front two bearing hubs with new speed sensors but still nothing. Was seeing if maybe on the new Chrysler PCM, maybe we were supposed to but in gearing ratio or tire size into the computer somewhere that we didn't and that is why it isn't working. He is out of the country now so seeing if you guys gave me some guidance, i might be able to go to the dealer and tell them to look in a specific place. Thanks!