GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 22888-20A Universal Puller
    • J 22888-30 Puller Legs

    Object Number: 425476  Size: SH

    Notice: If the transaxle side cover is frozen to the left case, tap around the side cover with a rubber mallet until the side cover is free of the left case. DO NOT attempt to pry the side cover away from the left case with metal tools or damage to the left case and side cover mating surfaces could result.

  1. Remove the 6 bolts and 2 nuts/washers. Remove the transaxle side cover from the left case.

  2. Object Number: 155092  Size: SH
  3. Remove the following components from the input shaft:
  4. 2.1. The fifth speed synchronizer retainer
    2.2. The fifth speed synchronizer hub plate
  5. Engage the transaxle by pushing in on the gearshift shaft.
  6. Engage the fifth gear by sliding the fifth speed sleeve down. The transaxle is now locked in two gears, preventing input shaft rotation and permitting countershaft nut removal.
  7. Use a center punch and a hammer in order to unstake the countershaft nut.
  8. Remove the countershaft nut from the countershaft.

  9. Object Number: 155385  Size: SH

    Important: Use a magnet in order to help remove the guide ball from the fifth speed gearshift fork.

  10. Remove the gearshift fork plug and the guide ball from the fifth speed gearshift fork.
  11. Move the transaxle gearshift shaft to the neutral position.
  12. Use a standard drift punch and a hammer in order to remove the gearshift fork roll pin.

  13. Object Number: 155387  Size: SH
  14. Using your hands, remove the following components from the input shaft (if you cannot remove the assembly manually, use J 22888-20A with two J 22888-30 ):
  15. • The fifth speed gearshift fork
    • The fifth speed sleeve and hub
    • The synchronizer ring spring
    • The high speed synchronizer ring spring
    • The fifth speed synchronizer ring
    • The input shaft fifth gear
    • The fifth gear bearing
  16. Remove the fifth speed gearshift fork from the fifth speed sleeve and hub assembly.
  17. Remove the synchronizer ring spring and the fifth speed hub from the fifth speed sleeve.

  18. Object Number: 155388  Size: SH
  19. Using your hands, remove the countershaft fifth gear from the countershaft (if you cannot remove the gear manually, use J 22888-20A with J 22888-30 .
  20. Important: If the screws are damaged during removal, replace with new screws.

  21. Remove the following components from the left case in order:
  22. • The 6 screws
    • The bearing set shim
    • The left case plate
    • The 3 bolts
    • The left case cap
    • The O-ring

    Object Number: 155389  Size: SH
  23. Remove the gearshift yoke bolt from the gearshift yoke.

  24. Object Number: 155775  Size: SH

    Important: The locating springs are of various sizes for ease of assembly. Remember the location and position of each spring in order to ensure correct installation.

  25. Remove the following components from the right case:
  26. • The gearshift shaft screws with the washers
    • The 3 locating springs
    • The 3 steel balls

    Object Number: 155390  Size: SH

    Important: Do NOT remove the fifth-to-reverse interlock bolt for removal of the gearshift guide case.

  27. Remove the following components from the left case:
  28. 17.1. The 4 bolts
    17.2. The harness bracket
    17.3. The gearshift guide case
    17.4. The backup lamp switch with O-ring

    Object Number: 155396  Size: SH
  29. Remove the gearshift interlock bolt and the washer from the left case.
  30. Remove the gearshift and select shaft assembly from the left case.

  31. Object Number: 155854  Size: SH
  32. Remove the reverse idler shaft bolt (2) and the washer from the left case.
  33. Remove the eleven case bolts (1) from the left case.
  34. Remove the two case bolts from inside of the right case.
  35. Important: Separate the transaxle cases with the right case (clutch housing) facing downward so that all of the internal components remain in the right case.

  36. Remove the left case from the right case by lifting the left case up and off of the right case.

  37. Object Number: 422233  Size: SH
  38. Remove the gearshift yoke from the gearshift arm.
  39. Remove the following components from the right case (4):
  40. • Reverse idler gear shaft with the washer
    • The reverse idler gear

    Object Number: 155393  Size: SH
  41. Remove the reverse idler lever bolts and assembly.
  42. Important: When removing the 5th and reverse gearshift shaft and guide shaft, push the high speed gearshift shaft in. Shift the high speed gearshift shaft to 4th gear in order to remove the 5th and reverse gearshift shaft and guide shaft.

  43. Remove the following components simultaneously from the right case:
  44. • The fifth and reverse gearshift guide shaft
    • The fifth and reverse gearshift shaft

    Object Number: 155400  Size: SH
  45. Tap the input end of the assembly with a plastic mallet.
  46. Remove the following components simultaneously as a cluster:
  47. • The input shaft assembly
    • The countershaft assembly
    • The high speed and low speed gearshift shafts
  48. Remove the following components from the input shaft and countershaft assemblies:
  49. • The high speed gearshift shaft
    • The low speed gearshift shaft
  50. Separate the input shaft assembly from the countershaft assembly.

  51. Object Number: 422239  Size: SH
  52. Remove the differential assembly from the right case.
  53. • Grasp the differential assembly (1).
    • Lift the differential assembly up and out of the right case (2).