GM Service Manual Online
For 1990-2009 cars only

    Object Number: 840851  Size: SH
  1. Inspect the park system components for the following conditions:
  2. • A worn park pawl actuator guide (809)
    • A damaged or bent park pawl actuator assembly (800)
    • A damaged internal mode switch (IMS) detent lever (811)
    • A bent or damaged manual valve link (402)
    • A kinked or bent manual valve link spring (403)

    Object Number: 10577  Size: SH
  3. Use a 9/16 inch socket and a hammer in order to install the manual shift shaft seal assembly (806) into the case.

  4. Object Number: 10586  Size: SH
  5. Install a new park pawl actuator guide O-ring seal (810) onto the park pawl actuator guide (809).
  6. Install the actuator guide assembly into the case.
  7. Align the slot for the actuator guide pin (808) in the park pawl with the pin hole in the case.
  8. Use a mallet in order to install the actuator guide pin (808).

  9. Object Number: 840853  Size: SH
  10. Assemble the IMS (811) onto the park pawl actuator assembly (800).
  11. Install the IMS detent lever assembly (811) and the park pawl actuator assembly  (800) into the case.

  12. Object Number: 870964  Size: SH
  13. Align the groove for the manual shift shaft pin with the pin hole in the case.
  14. Use a mallet in order to install the manual shift shaft pin (801).