GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • J 23327 Clutch Spring Compressor
    • J 38734 Intermediate Spring Compressor Adapter

For equivalent regional tools, refer to Special Tools.


    Object Number: 54646  Size: SH
  1. Remove the oil cooler pipe fitting seal (690) from the center support assembly (640).
  2. Inspect the center support assembly (640) for damage.

  3. Object Number: 28695  Size: SH
  4. Using the J 23327 spring compressor and the J 38734 spring compressor adapter , compress the intermediate clutch spring assembly (635).
  5. Remove the intermediate clutch spring retainer ring (634).
  6. Remove the J 23327 spring compressor and the J 38734 spring compressor adapter .
  7. Remove the intermediate clutch spring assembly (635).
  8. Inspect the intermediate clutch spring assembly (635) for collapsed coils and distortion.

  9. Object Number: 28696  Size: SH
  10. Remove the intermediate clutch piston (636). Apply compressed air to the center support bolt hole to aid in piston removal.

  11. Object Number: 28698  Size: SH
  12. Remove the inner seal (637) and outer seal (638) from the intermediate clutch piston (636).
  13. Inspect the intermediate clutch piston (636) for cracks and damage.

  14. Object Number: 181740  Size: SH
  15. Remove the direct clutch housing oil seal rings (639) from the center support assembly hub.
  16. Note: Do not disassemble the roller clutch race from the center support assembly (640). If a new center support assembly (640) is required, the support will come with a roller clutch race already installed.

  17. Inspect the center support intermediate clutch orifice (530). This needs to be open approximately 0.51 mm (0.020 in).
  18. Inspect the oil seal ring pockets for damage.