GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 25234 Front and Rear Bearing Installer
    • J 37372 Synchronizer and Gear Installer

    Object Number: 38525  Size: SH
  1. Install the 1st speed gear synchronizer blocking ring.
  2. Install the 1st speed gear synchronizer inner cone.
  3. Install the 1st speed gear synchronizer outer cone.

  4. Object Number: 38523  Size: SH
  5. Install the bearing sleeve pin.
  6. Install the bearing sleeve.
  7. Install the 1st speed gear needle bearing assembly.

  8. Object Number: 38748  Size: SH
  9. Install the 1st speed gear.

  10. Object Number: 38522  Size: SH
  11. Install the mainshaft rear bearing assembly.

  12. Object Number: 409661  Size: SH
  13. Install the 5th speed driven gear using the J 25234 and a hydraulic press.

  14. Object Number: 38519  Size: SH
  15. Install the reverse sliding gear.

  16. Object Number: 4810  Size: SH
  17. Install the 1st/2nd speed synchronizer spring and the inserts into the reverse sliding gear.
  18. Line up scribed marks on the synchronizer hub and on the sleeve.

  19. Object Number: 38518  Size: SH
  20. Install the 1st/2nd speed gear synchronizer blocking ring.
  21. Install the 1st/2nd speed gear synchronizer outer cone.
  22. Install the 1st/2nd speed gear synchronizer inner cone.
  23. Install the 1st speed gear thrust washer.

  24. Object Number: 409662  Size: SH
  25. Install the synchronizer spiral retaining ring.

  26. Object Number: 38514  Size: SH
  27. Install the 2nd speed gear needle bearing assembly and the spacer.

  28. Object Number: 38747  Size: SH
  29. Install the thrust washer and the 2nd speed gear.

  30. Object Number: 38504  Size: SH
  31. Install the 2nd speed gear retainer ring.

  32. Object Number: 38503  Size: SH
  33. Install the 3rd speed gear needle bearing assembly and the spacer.

  34. Object Number: 409664  Size: SH
  35. Install the 3rd speed gear (using the J 37372 and a hydraulic press.)
  36. Install the 3rd speed gear blocker ring.
  37. Install the 3rd/4th speed gear synchronizer.
  38. Install the 4th speed gear blocking ring.