Control Valve Upper Body Assembly Cleaning and Inspection

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.

Fig 1: Valve Assembly

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
WARNING: Valve springs can be tightly compressed. Use care when removing retainers and plugs. Personal injury could result. CAUTION: After cleaning the transmission components, allow to air dry. Do not use cloth or paper towels in order to dry any transmission components. Lint from the towels can cause component failure. CAUTION: Do not reuse cleaning solvents. Previously used solvents may deposit sediment which may damage the component. Preliminary Procedures Clean and inspect all valve components and the valve body. The control valve upper body is replaceable only as an assembly. Clean and inspect the 2 encapsulated ball check valves but do not remove.
1	Auxiliary Line Boost Valve Train
2	1-3 Clutch Regulator Valve Train
3	Hybrid Direct, 2-3-4 Clutch Regulator Valve Train
4	Shift Solenoid Valve Train - Mode A
5	Shift Solenoid Valve Train - Mode B
6	Actuator Feed Limit Valve Train
7	Hybrid Low, 1-2 Clutch Regulator Valve
8	Hybrid Low, 1-2 Clutch Boost Valve Train
9	Clutch Piston Exhaust Blowoff Ball Valve Train