2.4

hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
63,348 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2012 GMC Sierra 2500 drivetrain problems

drivetrain problem

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2012 GMC Sierra 2500 Owner Comments

problem #4

Mar 022023

Sierra 2500

  • 126,393 miles

A D V E R T I S E M E N T S

Driving on the expressway around 60 mph when the truck went into limp mode slowing me down to 40 and then would not shift gears Tcm went out gm told me that there is a big problem

- Lake Village , IN, USA

problem #3

Apr 202023

Sierra 2500

  • miles
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.

- St Cloud , FL, USA

problem #2

Mar 302023

Sierra 2500

  • miles
Transmission Control Module Failed

- Danville, VA, USA

problem #1

Nov 182017

Sierra 2500

  • 127,000 miles
The contact owns a 2012 GMC Sierra 2500. While driving approximately 45 mph, the vehicle jerked, stalled, and lost power. The transmission warning indicator illuminated. The vehicle was taken to courtesy Buick GMC lafayette (4750 johnston St, lafayette, la 70506 (337) 504-7342) where it was diagnosed that the torque converter blew apart and the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and confirmed that no warranty or recall was associated with the VIN. The approximate failure mileage was 127,000.

- Broussard, LA, USA

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