Aug 2, 2023Transmission & drivetrainElectrical systemSpeed control
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.
NHTSA ODI 11536038
Jun 24, 2013Speed control
TL* THE CONTACT OWNS A 2012 GMC SIERRA K-1500. THE CONTACT STATED THAT WHILE DRIVING 75 MPH, THE VEHICLE BEGAN TO DECELERATE AS THE WARNING LIGHTS IN THE INSTRUMENT PANEL ILLUMINATED. THE VEHICLE WOULD NOT ACCELERATE BEYOND 35 MPH. THE FAILURE WAS RESOLVED MOMENTARILY AFTER THE VEHICLE WAS RESTARTED BUT SOON RECURRED. THE VEHICLE WAS TAKEN TO THE DEALER, BUT THEY WHERE UNABLE TO DUPLICATE THE FAILURE. THE FAILURE WAS NOT REPORTED TO THE MANUFACTURER. THE FAILURE MILEAGE WAS 7,000. THE CURRENT MILEAGE WAS 20,000. KMJ
NHTSA ODI 10521476
Oct 19, 2012Speed control
TL* THE CONTACT OWNS A 2012 GMC SIERRA. THE CONTACT STATED THAT WHILE DRIVING UPHILL AND ATTEMPTING TO DECELERATE. THE VEHICLE ACCELERATED ABNORMALLY. IN ORDER TO STOP THE VEHICLE, THE CONTACT ABRUPTLY APPLIED THE BRAKES AS THE ENGINE EXHIBITED A LOUD THUMP. THE CONTACT TOOK THE VEHICLE TO THE DEALER BUT THEY WERE UNABLE TO DUPLICATE THE FAILURE. THE FAILURE AND THE CURRENT MILEAGES WERE 5,545. UPDATED 13/13/12 *CN
NHTSA ODI 10481134