1-3 Clutch Releases

WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.

Pressure Control (PC) Solenoid 4 Trim

The PC solenoid 4 trim is commanded OFF, allowing PCS 4 signal fluid to exhaust from the 1-3 clutch regulator valve.

1-3 Clutch Assembly

13 clutch fluid pressure is exhausted from the center support assembly, allowing 1-3 clutch spring force to move the 1-3 clutch piston and release the 1-3 clutch plates.

Shift Solenoid Valve - Mode A

Exhausting 13 clutch fluid pressure passes through the shift solenoid valve - mode A into the 13 clutch/A cooling feed circuit.

#2 Encapsulated Ball Check Valve

13 clutch feedback fluid pressure exhausts into the 13 clutch/A cooling feed circuit, allowing actuator feed limit fluid to seat the ball.

1-3 Clutch Regulator Valve

1-3 clutch regulator valve spring force moves the 1-3 clutch regulator valve to the released position, allowing 13 clutch/A cooling feed fluid pressure to exhaust through the valve into the backfill circuit.

Clutch Piston Exhaust Blowoff Ball Valve

Excess fluid pressure in the backfill circuit exhausts at the clutch piston exhaust blowoff ball valve in order to maintain a constant backfill fluid pressure of 2 psi.