GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • J-23327 Clutch Spring Compressor
    • J-28585 Snap Ring Remover
    • J-23456 Booster and Clutch Pack Compressor
    • J-45184 Differential Bearing Race Installer

    Object Number: 749598  Size: SH
  1. Remove the 1-2 reverse clutch backing plate retaining ring (622) using J-28585 remover .
  2. Remove the following components:
  3. • The 1-2 reverse clutch backing plate (621)
    • The 6 1-2 reverse clutch fiber plates (620)
    • The 6 1-2 reverse clutch steel plates (619)
    • The 1-2 reverse clutch apply plate (618)

    Object Number: 749620  Size: SH

    Note: Do not bend the 1-2 reverse clutch piston return spring assembly (601).

  4. Place J-45184 installer  (1) on the center of J-23456 compressor  (2).
  5. Place the transmission case cover (19) with the 1-2 reverse clutch piston assembly onto J-45184 installer  (1).
  6. Using J 23327-1 (3), which is the bridge part of J-23327 compressor , compress the 1-2 reverse clutch piston return spring assembly (601).
  7. Remove the 1-2 reverse clutch piston return spring retaining ring (600) using snap ring pliers.
  8. Remove the pressure from J-23456 compressor  (2), remove J 23327-1 (3) and the 1-2 reverse clutch piston return spring assembly (601).
  9. Remove all tools.

  10. Object Number: 749628  Size: SH

    Warning: Wear safety glasses when using compressed air in order to prevent eye injury.

  11. While pulling upward on the piston by hand, apply compressed air into the 1-2 reverse clutch fluid passage and remove the 1-2 reverse clutch piston (603).
  12. Remove the 1-2 reverse clutch piston inner seal (602).
  13. Remove the 1-2 reverse clutch piston outer seal (604).