This bulletin applies to 2010-2013 GMC Terrain trucks that exhibit an automatic transmission fluid leak. The technician may find fluid leaking from the torque converter housing and the torque converter seal.
In this case, the seal should be replaced. An improved, more robust seal is now available under P/N 24256953. The revised seal is also included in the automatic transmission seal kit P/N 24269583, 24267774, 24267569 and 24267776.
It is recommended that a new torque converter seal be installed any time the transmission is removed from the vehicle.