I have a 2012 duramax with 116,000 miles. Truck has been great until I started it one morning only to find that my check engine light is on throwing p2534 and p163d. In addition to the error codes my service 4 wheel drive light is on. I started off by testing pin 63 on my TCM it is at 12 + volts. I have traced all wiring under dash and to TCM for any kind of breaks or chaffing (found nothing). I have been searching online for even a hint of a solution for a week now but everything seems to be related to earlier model duramax. Has anyone else had these same issue and found a solution. I just need some confidence before ordering a new $500 TCM.
Thank you all in advance
Thank you all in advance