GM Service Manual Online
For 1990-2009 cars only

Special Tools

J 44587 Main Shaft Holder

For equivalent regional tools, refer to Special Tools.


    Object Number: 1217961  Size: SH
  1. Install the intermediate carrier module (2).
  2. Rotate the intermediate carrier module (2) until the module drops into place.
  3. Caution: Installing the thrust bearing incorrectly may cause permanent damage to the transmission.

  4. Align thrust bearing assembly (1) so that the blue stripe on the thrust bearing assembly is facing towards the intermediate carrier module (2).
  5. Install the thrust bearing assembly (1) onto the intermediate carrier module (2).

  6. Object Number: 1217466  Size: SH

    Caution: Do not rotate the transmission from the nose-up position without installing J 44587. Failure to install J 44587 and rotating the transmission will cause clearance issues during assembly and possible damage to the transmission.

  7. Align J 44587 holder J 44587 holder  (1) with the power takeoff (PTO) access as follows:
  8. • The tongue of J 44587 holder is facing toward the PTO access.
    • The bolts holes of J 44587 holder are aligned with the 2 front bolt holes of the PTO access.
  9. Install J 44587 holder  (1) into the PTO access.
  10. Install 2 bolts (2) into J 44587 holder  (1) and tighten the bolts snugly.

  11. Object Number: 1217462  Size: SH
  12. Install the intermediate sun gear (3) and the sun gear spacer (2) onto the main shaft (4).
  13. As a unit, install the main shaft (4), the intermediate sun gear (3), and the sun gear spacer (2) into the intermediate planetary carrier module (5).
  14. Align the output sun gear (1) so that the flat side of the sun gear is facing the sun gear spacer.
  15. Install the output sun gear (1) onto the main shaft (4).
  16. Make sure the output sun gear and sun gear spacer splines are engaged.

  17. Object Number: 1217576  Size: SH

    Caution: Installing the thrust bearing incorrectly may cause permanent damage to the transmission.

  18. Align the thrust bearing assembly (1) so that the blue stripe on the thrust bearing assembly is facing away from the output sun gear (2).
  19. Install the thrust bearing assembly (1) into the output sun gear (2).