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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1035 (Automatic Transmission - ALLISON - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Off-Vehicle Repair Information >> 3-5-Reverse Clutch Piston Removal

3-5-Reverse Clutch Piston Removal

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Locating 3rd, 5th And Reverse Clutch Annulus Holes
    GM1660838Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The preferred method of dislodging the 3rd, 5th, and reverse clutch piston is with compressed air. Use a 9.5 mm (3/8 in) rubber hose on the air connection to reach into the 3rd, 5th, and reverse clutch annulus port. When shooting air into the annulus port, ensure that the rubber hose covers both of the 3rd, 5th, and reverse clutch annulus port holes. If compressed air is not available, remove the 3rd, 5th, and reverse clutch piston assembly using pliers.
  1. Position the air hose so that the hose covers both 3rd, 5th, and reverse clutch annulus holes (1).
    2. Fig 2: View Of 3rd, 5th, And Reverse Clutch Piston Assembly
    GM1216965Courtesy of GENERAL MOTORS CORP.
  2. Shoot air into the 3rd, 5th, and reverse clutch annulus port until the 3rd, 5th, and reverse clutch piston assembly (1) is dislodged.
  3. Remove the 3rd, 5th, and reverse clutch piston assembly (1).
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