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Home >> Hummer >> 2007 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 1055 (Automatic Transmission - 6L50/6L80/6L90 - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Off-Vehicle Repair Instructions >> 4-5-6 Clutch Overhaul (6L90) >> 4-5-6 Clutch Piston Removal

4-5-6 Clutch Piston Removal

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: 4-5-6 Clutch Piston Component View
GM1555321Courtesy of GENERAL MOTORS CORP.
4-5-6 Clutch Piston Removal

Callout Component Name
1 4-5-6 Clutch Piston Dam Retaining Ring
NOTE: Use care when compressing the 4-5-6 clutch piston assembly, spring and dam assembly. Compressing the dam assembly too much may damage it.
NOTE: Refer to Retaining Ring Reuse Notice .

Special Tool: 
J 43074  Clutch Spring Compressor. See Special Tools .
2 4-5-6 Clutch Piston Dam Assembly
Tip:  It may be necessary to apply air pressure to remove the dam and piston.
3 4-5-6 Clutch Spring
4 4-5-6 Clutch Piston Assembly
Tip:  It may be necessary to apply air pressure to remove the piston.