First I had a problem with the truck engine having a bad misfire while the transmission was fine.
I read codes and got a EPC electronic pressure control code. I found the bad wire coroded off at the trans harness connector, So I repaired and EPC code went away, Along with the misfire.
But now the transmission takes off in what seems to be 2 or 3rd while in OD range and other erratic behavior.
So currently I read codes and I get code 512, 121 and cannot seem to reset them by disconnecting the batt terminal.
Tuesday, July 28th, 2020 AT 11:06 AM
(Merged)