One problem related to automatic transmission control module has been reported for the 2012 GMC Sierra 2500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 GMC Sierra 2500 based on all problems reported for the 2012 Sierra 2500.
Failed transmission control module (24256861). While driving in the early morning hours (darkness) taking my child to school, I was navigating through a busy intersection when the vehicle surged and then made a loud metal on metal sound, feeling as if someone had struck me from behind. At that point the power train became inoperable, stranding us and coming very close to being first, struck from behind and then from cross traffic. The vehicle was/has been inspected by a gm technician at starling Chevrolet, st cloud, FL and the tcm was found to have failed (trouble code u0101, lost communication with tcm). It has been at the dealership for going on four months awaiting the production of a replacement part(tcm). There was no prior indication that the tcm was about to fail. Upon failure, all lights on the vehicle display flashed and the indicator for the vehicle drive position was lost (p, r, n, d), no longer visible.
| Power Train problems | |
| Automatic Transmission Control Module problems | |
| Automatic Transmission Torque Converter problems |