4L80E 4L85E GM Transmission TCC Regulator Valve Repair Kit TransGo (4L80E-TCC)

Non-Domestic Product: No Other Part Number: 8623920, 8623921  Custom Bundle: No Fitment Type: Direct Replacement Items Included: Valve, two springs, two drill bits Manufacturer Part Number: 4L80E-TCC  Modified Item: No Transmission Type: Automatic Brand: TransGo Type: TCC Regulator Repair Kit Manufacturer Warranty: Unspecified Length Surface Finish: New Country/Region of Manufacture: United States Performance Part: Yes 4L80E - 4L85E TCC Regulator Valve Repair Kit fits 1991-on 1991 to 2013 newer General Motors vehicles equipped with 4L80E and 4L85E automatic transmissions often wear out the torque converter clutch (TCC) regulator valve bore in the valve body. The TCC regulator valve function is to regulates the torque converter clutch apply pressure. The computer varies the pulse width modulation of the TCC PWM solenoid, which regulates the apply pressure of the lock-up clutch. Because of the constant PWM solenoid induced oscillation, over time, excessive wear of the bore occurs. As a