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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 36 (Automatic Transmission - 8L90 (M5U) - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> 2-3-4-6-8 and 4-5-6-7-8 Reverse Clutch Assemble

2-3-4-6-8 and 4-5-6-7-8 Reverse Clutch Assemble

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools

Equivalent regional tools:Special Tools

  1. GM3703374Courtesy of GENERAL MOTORS COMPANY

    Use DT-50906  installer and a press to install the bearing.

  2. 2-3-4-6-8 and 4-5-6-7-8-Reverse Clutch Housing Bearing (1) - Install
  3. GM3703379Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Seal Reuse Caution .

    2-3-4-6-8 Clutch Piston Dam Seal (1) - Install NEW [2x]

  4. 4-5-6-7-8-Reverse Clutch Piston Stop Seal (2) - Install NEW
  5. 4-5-6-7-8-Reverse Clutch Piston Seal (3) - Install NEW
  6. GM3703382Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Seal Reuse Caution .

    2-3-4-6-8 Clutch Piston Seal (1) - Install NEW

  7. 2-3-4-6-8 Clutch Piston (2) - Install
  8. NOTE:

    Position the spring in the orientation as observed during removal.

  9. 2-3-4-6-8 Clutch Piston Return Spring (3) - Install
  10. 2-3-4-6-8 Clutch Piston Dam Seal- Inner (4) - Install NEW
  11. 2-3-4-6-8 Clutch Piston Dam Seal- Outer (5) - Install NEW
  12. 2-3-4-6-8 Clutch Piston Dam (6) - Install
  13. NOTE:

    It may be helpful to loosely install the retaining ring before installing the tool.

  14. 2-3-4-6-8 Clutch Piston Dam Retaining Ring (7) - Install
  15. Assemble special tools as shown to install the retaining ring.
  16. GM3703388Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Seal Reuse Caution .

    4-5-6-7-8-Reverse Clutch Piston Seal (1) - Install NEW

  17. NOTE:

    Position the stop in the orientation observed during removal.

  18. 4-5-6-7-8-Reverse Clutch Piston Stop (2) - Install
  19. 4-5-6-7-8-Reverse Clutch Piston (3) - Install
  20. NOTE:

    Position the spring in the orientation observed during removal.

  21. 4-5-6-7-8-Reverse Clutch Piston Return Spring (4) - Install
  22. 4-5-6-7-8-Reverse Clutch Piston Seal (5) - Install NEW
  23. 4-5-6-7-8-Reverse Clutch Piston Dam (6) - Install
  24. NOTE:

    It may be helpful to loosely install the retaining ring before installing the tool.

  25. 4-5-6-7-8-Reverse Clutch Piston Dam Retaining Ring (7) - Install NEW
  26. Assemble special tools as shown to install the retaining ring.
  27. GM3703398Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The teeth on the clutch plate goes between notches on the piston.

    Align center tooth with notch on piston.

  28. 4-5-6-7-8-Reverse Clutch Plate - Waved (1) - Install
  29. 4-5-6-7-8-Reverse Clutch Plate (2) - Install [4x]
  30. 4-5-6-7-8-Reverse Clutch Plate - Friction (3) - Install [4x]
  31. 4-5-6-7-8-Reverse Clutch Backing Plate (4) - Install
  32. Select the correct retaining ring. 4-5-6-7-8 Reverse Clutch Backing Plate Retaining Ring Measurement 
  33. NOTE:

    The retaining ring opening should be between the teeth on the clutch plates.

  34. 4-5-6-7-8-Reverse Clutch Backing Plate Retaining Ring (5) - Install
  35. GM3703406Courtesy of GENERAL MOTORS COMPANY

    Align tabs with notches in the piston.

  36. 2-3-4-6-8 Clutch Apply Ring (1) - Install
  37. Align the double tabs on the clutch plate with large notches in the housing.
  38. 2-3-4-6-8 Clutch Plate - Waved (2) - Install
  39. 2-3-4-6-8 Clutch Apply Plate (3) - Install
  40. 2-3-4-6-8 Clutch Plate - Friction (4) - Install [5x ]
  41. 2-3-4-6-8 Clutch Plate (5) - Install [4x]
  42. 2-3-4-6-8 Clutch Backing Plate (6) - Install
  43. Select the correct retaining ring. 2-3-4-6-8 Clutch Backing Plate Retaining Ring Measurement 
  44. Align The retaining ring opening with the backing plate tooth without a notch.
  45. 2-3-4-6-8 Clutch Backing Plate Retaining Ring (7) - Install