TCC Regulator sleevekit 4T65E

TCC Regulator sleevekit 4T65E Valve Sleeve Spring O-Ring The OE TCC regulated apply bore in GM 4T65-E units wears, causing TCC signal (PWM) oil and TCC regulated apply oil to leak. The leakage lowers the apply pressure, which causes the torque converter clutch to slip. The Sonnax TCC regulated apply valve kit 84754-34K addresses TCC slip, code 741 and occasional ratio codes. Symptoms: Code P0741 Gear ratio codes TCC slip Cause: Bore wear at the TCC apply valve allows regulated apply oil to exhaust. Correction: Sonnax design improvements aid durability and restore apply pressure to eliminate converter clutch slippage. NOTE: It is recommended to check separator plate orifices in this area for contamination. Additionally, the TCC apply valve bore should be examined for wear with any TCC related concerns. Required tool Reamer 4T65E TCC-valve: 84754-TL3