GM Service Manual Online
For 1990-2009 cars only

    Object Number: 20235  Size: SH
  1. Remove the roller clutch assembly (652) from the forward clutch support (656) by turning the roller clutch assembly (652) clockwise and gently lifting upward.
  2. Remove the thrust bearing (113) from the forward clutch support (656).

  3. Object Number: 20237  Size: SH
  4. Remove the final drive sun gear shaft snap ring (660).
  5. Remove the parking pawl gear (659).
  6. Remove the forward clutch support to parking pawl gear thrust bearing (658).
  7. Remove the forward clutch support (656) from the final drive sun gear shaft (651).

  8. Object Number: 20239  Size: SH

    Important: The parking pawl pin has a pressed fit into the forward clutch support. The parking pawl pin is not serviceable. Do not remove the parking pawl pin.

  9. Remove and discard the two seals (654) from the forward clutch support (656).

  10. Object Number: 20861  Size: SH
  11. Inspect the snap ring for overextension (660).
  12. Inspect the seal grooves for damage (656).
  13. Inspect for signs of excessive bearing and bushing wear.
  14. Inspect the splines and the parking gear teeth for cracks or excessive wear.
  15. Inspect the fluid feed holes for the proper opening.
  16. Inspect all other components for excessive wear or damage.
  17. Clean and dry all of the components.

    Object Number: 20235  Size: SH
  1. Remove the roller clutch assembly (652) from the forward clutch support (656) by turning the roller clutch assembly (652) clockwise and gently lifting upward.
  2. Remove the thrust bearing (113) from the forward clutch support (656).

  3. Object Number: 20237  Size: SH
  4. Remove the final drive sun gear shaft snap ring (660).
  5. Remove the parking pawl gear (659).
  6. Remove the forward clutch support to parking pawl gear thrust bearing (658).
  7. Remove the forward clutch support (656) from the final drive sun gear shaft (651).

  8. Object Number: 20239  Size: SH

    Note: The parking pawl pin has a pressed fit into the forward clutch support. The parking pawl pin is not serviceable. Do not remove the parking pawl pin.

  9. Remove and discard the two seals (654) from the forward clutch support (656).

  10. Object Number: 20861  Size: SH
  11. Inspect the snap ring for overextension (660).
  12. Inspect the seal grooves for damage (656).
  13. Inspect for signs of excessive bearing and bushing wear.
  14. Inspect the splines and the parking gear teeth for cracks or excessive wear.
  15. Inspect the fluid feed holes for the proper opening.
  16. Inspect all other components for excessive wear or damage.
  17. Clean and dry all of the components.