One problem related to automatic transmission torque converter 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.
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.