Anyone dealt with PCM issues? I used an Alientech PG3 to tune my trans. I successfully flashed the transmission twice - once with the tune, then again back to stock. The third attempt was to apply the tune again, but after a few seconds, the write process errored out and seems to have corrupted my PCM. I am getting a U0101 code stating no data connection to the transmission control module, and the dash is full of errors.
The truck will not start, and I cannot write to the PCM anymore. I have tried clearing codes, pulling the battery, etc. I'm hoping the dealer can just re-flash the PCM back to stock?
The truck will not start, and I cannot write to the PCM anymore. I have tried clearing codes, pulling the battery, etc. I'm hoping the dealer can just re-flash the PCM back to stock?