Automatic Transmissions | Torque Converters
2012 chevy silverado 1500 2x4 6 speed automatic (6L80 transmission).
New rear end went from 3:42 to 3:73. New TCM/Valve body.
Reverse and 1st are fine but completely slips when going to 2nd if in Drive. if i put in manual mode i can shift fine (this was not the case until replaced TCM and...