I've been running a Superchips Flashpaq to reprogram the tire size and axle ratio and running an economy tune for now. Yesterday, I needed to go pick up a tractor and haul it home. I went to switch the tune to a tow tune and halfway through reprogramming, it lost communication to the databus. Followed all on screen directions and tried it again. Nope. Tried a third time...would even connect. Tried my OBD reader...wouldn't connect either. Trying to start it doesn't even get a click on the starter. Everything I've found online says the PCM will have to be reflashed and maybe replaced. Anyone experience anything similar? Could a dealer reflash just the PCM w/o the TB there.
Guess I'll be giving Superchips a call tomorrow since tech support wasn't open on Saturday.