GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • DT-47722 Shift Rail Bushing Remover and Installer
    • DT-47723 Output Shaft Bearing Installer
    • J-22912-01 Split Plate Bearing Puller
    • J 45869 Gear Protection Plates

    Object Number: 1955563  Size: SH
  1. Apply an approved lubricant to the counter gear shaft and install the following components:
  2. • the 2nd gear bearing (1)
    • the 2nd gear (6)
    • the 2nd gear synchronizer inner cone (5)
    • the 2nd gear synchronizer outer cone (4)
    • the 2nd gear outer blocker ring (3)
    • the 1st/2nd gear synchronizer sleeve (2)

    Object Number: 1955512  Size: SH
  3. Using a hydraulic press and DT-47722  (1), install the 1st/2nd gear synchronizer sleeve with the boss side facing 2nd gear. The synchronizer ring set and transmission clutch hub are to be aligned when installing the transmission clutch hub assembly.

  4. Object Number: 1955513  Size: SH

    Important: The retaining ring is a selected fit. Always install a NEW retaining ring.

  5. Select the maximum thickness snap ring (1) that will fit in the groove. Refer to Countershaft Front and Rear Bearing Retaining Ring Specifications .
  6. Install a NEW snap ring to the counter gear shaft.

  7. Object Number: 1955566  Size: SH
  8. Apply an approved lubricant and install the following components:
  9. • the 1st gear outer blocking ring (3)
    • the 1st gear synchronizer outer cone (2)
    • the 1st gear synchronizer inner cone (1)

    Object Number: 1955568  Size: SH
  10. Apply an approved lubricant and install and align the 1st gear bearing (3), 1st gear (2) and the reverse gear spline (1).

  11. Object Number: 1955514  Size: SH
  12. Using a hydraulic press and DT-47723 , install the reverse gear spline (1).

  13. Object Number: 1955571  Size: SH
  14. Apply an approved lubricant and install the reverse gear blocking ring (1).
  15. Install the ball (6) to the countershaft.
  16. Apply an approved lubricant and install the reverse gear bushing bearing (2).
  17. Apply an approved lubricant to the synchronizer sleeve and reverse gear (3).
  18. Align and install the synchronizer sleeve and reverse gear (3) together.
  19. Apply an approved lubricant and install the reverse gear bushing (5) with ball.
  20. Install the counter gear front bearing (4) with groove facing forward.

  21. Object Number: 1955515  Size: SH
  22. Using a hydraulic press and DT-47723  (1), install the counter gear front bearing.

  23. Object Number: 1955516  Size: SH

    Important: The retaining ring is a selected fit. Always install a NEW retaining ring.

  24. Select the maximum thickness snap ring (2) that will fit in the groove. Refer to 1st and 2nd Gear Synchronizer Retaining Ring Specifications .
  25. Install a NEW snap ring (2) to the counter gear shaft (1).