One problem related to automatic transmission torque converter has been reported for the 2011 GMC Terrain. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 GMC Terrain based on all problems reported for the 2011 Terrain.
I own a 2011 GMC Terrain. Put the vehicle in reverse and backed out of the driveway, then I put the vehicle in drive and it wouldn't go forward. Therefore, I put in reverse and backed back into the driveway I took it to the dealership and was told that the torque converter went bad on the transmission.