Pressure Control (PC) Solenoid 3 Trim
WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
The PC solenoid 3 trim defaults to its normally high state (ON) allowing actuator feed limit fluid to enter the PCS 3 signal circuit. PCS 3 signal fluid is then routed through orifice #30 to the variable low and 1-2 reverse and 4th clutch regulator valve; through orifice 12 to the variable low and 1-2 reverse and 4th clutch boost valve; and to the shift solenoid valve - mode B.