I have a 5.3L swapped 06 Colorado with the original 13 wire Trans from Colorado. Having TCC control issues. Sometimes the TCC locks and sometime it don't. Sometime the trans will shift normally and sometimes it will shift 1<2 hard.
It will throw code P0741 - Torque Converter Clutch Solenoid Circuit Performance/Stuck Off if the TCC does not come on at driving speeds.
Cycling the key on/off will cause the trans to act fine for the first time through the shifting pattern 1<2 2<3 3<4 and TCC locks. After that is goes crazy it will hard shift and may or may not TCC lock.
E40, ECM, GM Gen4 V8 - OP 12612557
T42, TCM, GM A4 - OP 24235341