Hey guys I have a 2011 LMM CC dually that is throwing a U0101 for TCM and no indicator line under gear shift range. Truck will not crank. I assumed it was TCM as I have had to replace them on other trucks. However this one is testing out ok as I have continuity between pin 9 and 69 and have power to the TCM. Also, have continuity between GPCM and TCM for the GMLAN + and - wires. I also have good readings at obd2, good ground at 4 and 5, voltage at 6 and 14, and 61 ohm resistance. I have tried to check all wiring and grounds haven’t noticed anything yet. Any ideas? Could this be a problem with NSBU? Or something in the shifter?
