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Home >> Chevrolet >> 2007 >> Avalanche 5.3 3 >> Repair and Diagnosis >> External Pages >> Different car >> Section 893 (Automatic Transmission - 6L50/6L80/6L90 - Introduction (2 Of 2)) >> Repair Instructions >> Repair Instructions - Off Vehicle >> 1-2-3-4 and 3-5 Reverse Clutch Overhaul (6L80) >> 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 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: View Of 1-2-3-4 & 3-5 Reverse Clutch Pistons & Seals
GM1555367Courtesy of GENERAL MOTORS CORP.
1-2-3-4 and 3-5 Reverse Clutch Piston Seals Replacement

Callout Component Name
NOTE: Refer to Seal Reuse Notice .
Tip:  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
NOTE: 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