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Home >> Hummer >> 2009 >> H2 4D Utility Pickup >> Repair and Diagnosis >> Transmission >> Hydraulic Diagrams >> Automatic Transmission - 6L80 - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis >> Off-Vehicle Repair Instructions >> Control Valve Upper Body Assembly Cleaning and Inspection

Control Valve Upper Body Assembly Cleaning and Inspection

Fig 1: Identifying Control Valve Upper Body Assembly
GM1566325Courtesy 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: Do not remove the exhaust backfill pressure relief retainer, spring, or ball valve (refer to arrow in above illustration for location). The retainer is set to a precise depth. Replacement of this retainer could cause internal transmission damage.
Preliminary Procedure: 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 CBR1/4-5-6 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