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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 134 (Automatic Transmission - 6L50/6L80/6L90 - Introduction (2 Of 2)) >> Repair Instructions >> Repair Instructions - Off Vehicle >> Control Valve Upper Body Assembly Cleaning and Inspection

Control Valve Upper Body Assembly Cleaning and Inspection

WARNING: This page is about a different car, the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Cadillac Escalade EXT, 2007 Cadillac Escalade ESV, and 2007 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Control Valve Upper Body Assembly Component View
GM1566325Courtesy of GENERAL MOTORS CORP.
Control Valve Upper Body Assembly Cleaning and Inspection

Callout Component Name
CAUTION: Valve springs can be tightly compressed. Use care when removing retainers and plugs. Personal injury could result.
NOTE: Do not remove the clutch piston exhaust blow off ball plug, valve, or spring. The plug is set to a precise depth. Replacement of this plug could cause internal transmission damage.
Tip:  Clean and inspect all valve components, locating pins, and the valve body. The control valve upper body is replaceable only as an assembly.
1 Clutch Boost Valve Train
2 1-2-3-4 Clutch Regulator Valve Train
3 3-5 Reverse Clutch Regulator Valve Train
4 Clutch Boost Valve Train
5 2-6 Clutch Regulator Valve Train
6 Clutch Boost Valve Train
7 1st/Reverse Band and 4-5-6 Clutch Regulator Valve Train
8 Actuator Feed Limit Valve Train
9 Control Valve Body Locator Pin
10 Control Valve Body Locator Pin
11 Control Valve Body Locator Pin