GM Service Manual Online
For 1990-2009 cars only

Special Tools

J 43909 Manual Shift Shaft Seal Installer

For equivalent regional tools, refer to Special Tools.


    Object Number: 1217162  Size: SH
  1. Install a new manual shift shaft seal (1) onto J 43909 installer  (2).
  2. Using J 43909 installer  (2) , drive the manual shift shaft seal (1) into the transmission case.
  3. Make sure the manual shift shaft seal is seated on the bottom of the bore.

  4. Object Number: 1640907  Size: SH
  5. Install the nib of the park pawl assembly (1) through the keyhole in the detent lever/internal mode switch (IMS) assembly (2).
  6. Rotate the park pawl assembly 180 degrees.

  7. Object Number: 1581025  Size: SH
  8. Place the roller end of the park pawl assembly (5) into the transmission case.
  9. Align the detent lever/IMS assembly (3) so that:
  10. • The detent notches of the detent lever are facing up.
    • The IMS connector is facing towards the rear of the transmission.
    • The guide hole for the manual valve pin is facing forward.
    • The manual shift shaft hole in the detent lever is aligned with the manual shift shaft seal (2).
  11. Slide the manual shift shaft (1) through the following components:
  12. • Transmission case
    • Manual shift shaft seal (2)
    • Detent lever/IMS assembly (3)

    Object Number: 1581023  Size: SH

    Note: The detent lever/IMS assembly retaining bolt contains patch lock material on the threads. Do not reuse the retaining bolt.

  13. Install the detent lever/IMS assembly (2) onto the manual shift shaft (1).
  14. Install the detent lever/IMS assembly retaining bolt (3).
  15. Caution: Refer to Fastener Caution in the Preface section.

  16. Using a T27 Torx® bit, tighten the detent lever/IMS assembly retaining bolt (3). Tighten the bolt to 10 N·m (89 lb in).

  17. Object Number: 1581027  Size: SH

    Caution: DO NOT twist the spherical pin when removing the pin from the transmission case. Damage to the transmission case can occur.

  18. Install the spherical pin (1) into the transmission case.
  19. Lightly tap the spherical pin (1) into position until the head of the pin (1) is seated against the transmission case.