Fix code P0741 TCC Stuck Off
GM has issued a technical service bulletin PIP4329 to address trouble code P0741 and a check engine light. The cause of the problem is debris plugging the converter clutch signal orifice cup plug 238 in the transmission pump cover. The debris blocks the transmission fluid that’s needed to move the converter clutch valve and apply the transmission torque converter clutch (TCC). To fix the problem, disassemble the pump and clean the converter clutch signal orifice cup plug in the cover and also clean the facing area of the pump body. Then free up movement of the converter clutch valve.
© 2012 Rick MuscoplatPosted on by Rick Muscoplat