This is a 6T70 transmission that we rebuilt out of a 2016 Chevy Traverse due to torque converter shudder. Torque converter shudder is a vibration/shaking that occurs when a vehicle is accelerating. It is most commonly felt in the steering wheel and is caused by a problem with the torque converter locking up and releasing repeatedly. If the issue is not diagnosed and repaired as soon as possible it will lead to serious transmission problems.