GM Celebrity/Century/Ciera/6000 1982-1996 Repair Guide

Torque Converter Clutch (TCC)


All models with an automatic transaxle use a TCC. The ECM/PCM controls the converter by means of a solenoid mounted in the transaxle. When the vehicle speed reaches a certain level, the ECM energizes the solenoid and allows the torque converter to mechanically couple the transaxle to the engine. When the operating conditions indicate that the transaxle should operate as a normal fluid coupled transaxle, the ECM/PCM will de-energize the solenoid. Depressing the brake will also return the transaxle to normal automatic operation.