Torque Converter Clutch Solenoid Valve

Fig 1: View Of Torque Converter Clutch Solenoid Valve

Courtesy of GENERAL MOTORS CORP.

The torque converter clutch (TCC) solenoid valve is a normally-open exhaust valve that is used to control torque converter clutch apply and release. When grounded, energized, by the powertrain control module (PCM) or transmission control module (TCM), the TCC solenoid valve stops converter signal oil from exhausting. This causes converter signal oil pressure to increase and move the TCC solenoid valve into the apply position.