I think I’m in the same boat with torque converter problems, 2016 5.3 Silverado with 120k. Just noticed problems beginning of this week. Slight surge in RPM, clunky shifts and not engaging in gear right away. Going to try to limp it back to my home shop. Hoping to not end up on the back of a tow truck. Is this that common of a problem on this generation of Chev?