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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1663 (Automatic Transmission - 6L45/6L50/6L80/6L90 - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> 1-2-3-4 and 3-5 Reverse Clutch Overhaul >> 1-2-3-4 and 3-5 Reverse Clutch Piston Seals Replacement

1-2-3-4 and 3-5 Reverse Clutch Piston Seals Replacement

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: 1-2-3-4 & 3-5 Reverse Clutch Piston Seals
GM1555367Courtesy of GENERAL MOTORS CORP.
Callout Component Name
CAUTION: Refer to Seal Reuse Caution .
Preliminary Procedure: Lubricate all seals with automatic transmission fluid (ATF) prior to installation.
1 1-2-3-4 Clutch Piston Seal
2 3-5 Reverse Clutch Piston Dam (O-Ring) Seal
3 3-5 Reverse Clutch Piston Inner Seal
4 1-2-3-4 Clutch Piston Housing
5 3-5 Reverse Clutch Piston Outer Seal
6 3-5 Reverse Clutch Piston
7 1-2-3-4 Clutch Piston Inner Seal
CAUTION: Do not install a NEW 1-2-3-4 clutch piston inner seal yet. A special tool used to install the 1-2-3-4 clutch piston housing retaining ring may damage the seal if the seal is installed prior to installing the retaining ring. Refer to 3-5 Reverse Clutch Piston Installation.
8 1-2-3-4 Clutch Piston Housing Seal
9 1-2-3-4 Clutch Piston Housing Seal