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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1663 (Automatic Transmission - 6L45/6L50/6L80/6L90 - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> 4-5-6 Clutch Overhaul >> 4-5-6 Clutch Piston Installation

4-5-6 Clutch Piston Installation

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: 4-5-6 Clutch Piston
GM1555336Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 4-5-6 Clutch Piston Assembly
2 4-5-6 Clutch Spring
CAUTION: Ensure the spring tabs are facing up during installation. Failure to do so may cause damage to the clutch assembly.
3 4-5-6 Clutch Piston Dam Assembly
Tip:  Lubricate the inner and outer sealing surfaces of the dam assembly with automatic transmission fluid (ATF) in order to ease installation into the piston.
4 4-5-6 Clutch Piston Dam Retaining Ring
CAUTION: Use care when compressing the 4-5-6 clutch piston assembly, spring and dam assembly. Compressing the dam assembly too much may damage it.
CAUTION: Refer to Retaining Ring Reuse Caution .

Tip:  Apply air to verify proper installation of all 4-5-6 clutch components. The piston should apply and release smoothly.
Special Tool: 
J 43074  Clutch Spring Compressor. See Special Tools .