Torque Converter Clutch Pressure Control Solenoid Valve
WARNING: This page is about a different car, the 2003 Saturn Vue and 2002 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
The Torque Converter Clutch (TCC) Pressure Control (PC) solenoid valve is a normally low, 3-port linear pressure control solenoid used to control the apply and release of the forward and reverse clutches, and the torque converter clutch. The TCM operates the solenoid with a negative duty cycle at a fixed frequency of 32 Hz to control the rate of clutch apply and release. The solenoid's ability to ramp the clutch apply and release pressures results in a smoother clutch operation.