GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • 87 91 188 Screws Press Support
    • 87 91 204 Output Shaft Bearing Race Sleeve
    • 87 91 261 Output Shaft Remover
    • 87 91 287 Puller
    • 87-91-303 Puller Arms, 150 mm
    • 87 91 410 Output Shaft Protector
    • 87 91 972 Assembly Ring
    • 87 92 103 Output Shaft Assembly Tool
    • 87 92 129 Lifting Eyes
    • 87 92 202 Output Shaft Bearing Race Sleeve
    • J 25031-A Three Jaw Puller
    • J 43483 Impact Driver
    • J 43707 Transaxle Support Fixture
    • J 43964 Engine Stand Fixture Adapter

Removal Procedure


    Object Number: 1227213  Size: SH

    Important: In all work involving disassembly of the transaxle, a new output shaft nut and crush sleeve must be installed during reassembly.

  1. Remove the back-up lamp switch to prevent the switch from being damaged during disassembly.
  2. Cover the holes for clutch hydraulics, axles, and the reverse lamp switch, and clean the transaxle if necessary.

  3. Object Number: 895488  Size: SH
  4. Mount the transaxle on holding J 43707 . Mount the transaxle and fixture in the J 43964 .

  5. Object Number: 895568  Size: SH
  6. Remove the pipe from the slave cylinder.

  7. Object Number: 895568  Size: SH
  8. Using pliers, pinch together the bottom halves of the pipe sleeve and move the pipe and sleeve upward.

  9. Object Number: 895576  Size: SH
  10. Pry up the locking tabs on the sleeve and remove the pipe.

  11. Object Number: 895580  Size: SH
  12. Remove the slave cylinder bolts and slave cylinder.
  13. Remove the reverse idler gear shaft bolt with an O-ring.

  14. Object Number: 895031  Size: SH
  15. Remove the transaxle rear cover and discard the gasket.

  16. Object Number: 895592  Size: SH

    Important: Do not shift gears using the 1st/2nd, 3rd/4th, or 5th shift shafts. All shifting should be done using the shift control shaft.

  17. Put the transaxle into 3rd gear by pulling the shift control shaft out. Other gears can be selected as follows:
  18. • Even gears = push shaft in
    • Odd gears = pull shaft out
    • 1st/2nd shift gate = turn shaft counter-clockwise
    • 5th and reverse gears = turn shaft clockwise.

    Object Number: 895034  Size: SH
  19. Using a punch and hammer, tap out the 5th gear fork retaining pin.

  20. Object Number: 1227214  Size: SH
  21. Engage the 5th gear by pressing the synchronizer sleeve and fork down onto the 5th gear. Two gears must be engaged at the same time to allow removal of output shaft nut.
  22. Pry up the locking tab on the output shaft nut and remove the nut.

  23. Object Number: 1227215  Size: SH

    Important: Before removing the 5th gear synchronizer sleeve, mark its position relative to the 5th gear synchronizer hub to assist in assembly.

    Important: Make sure the 5th gear shift shaft does not come out of the transaxle when the 5th gear shift fork is removed.

  24. Remove the 5th gear shift fork and synchronizer sleeve together.

  25. Object Number: 895037  Size: SH
  26. Remove the 5th gear synchronizer hub snap ring. This will be easier if the hub is tapped down first.
  27. Use the J 25031-A to remove the 5th gear synchronizer hub.
  28. Remove the blocking ring, blocking ring spring, 5th gear, and 5th gear bearing assembly.

  29. Object Number: 895596  Size: SH

    Important: When a manual transaxle with a serial number before T02075 is repaired for a 5th gear synchronizer failure, it must be determined whether the synchronizer components are of the 1st design or the 2nd design.

    The illustrations show the 1st design, the left half of the illustration, and the 2nd design, the right half of the illustration, of the 5th gear synchronizer components.

    Important:  All transaxles built prior to the T02075 serial number will be of the 1st design unless they have been previously repaired for this condition. All service parts are of the 2nd design.

  30. If the 5th synchronizer sleeve removed from the transaxle looks like the sleeve on the left, then it is a 1st design. The identification mark for the 2nd design is the extra groove on the top of the 5th gear sleeve.

  31. Object Number: 895599  Size: SH
  32. If the 5th gear blocking ring removed from the transaxle does not have a part number embossed on the bottom of the blocking ring, then it is a 1st design.
  33. If either the 5th synchronizer sleeve or blocking ring is a 1st design and needs to be replaced, then both the sleeve and the blocking ring must be replaced with the 2nd design parts as a unit. If the blocking rings and sleeve have already been replaced with the 2nd design components, then only replace parts as needed.


    Object Number: 1227193  Size: SH
  34. Remove the differential bearing retainer fasteners. The retainer will be removed after case removal.

  35. Object Number: 895040  Size: SH
  36. Remove the case-to-reverse idler gear shaft bracket bolt.
  37. Remove the case-to-clutch housing bolts and tap down 2 case-to-clutch housing alignment sleeves.

  38. Object Number: 895043  Size: SH
  39. Remove the case from the output shaft.
  40. 23.1. Check that 3rd gear is engaged.
    23.2. Install the 87 92 129 to the case.
    23.3. Install the 87 91 410 to the output shaft.
    23.4. Install the 87 91 287 with the 87-91-303 into the pulling eyes.
    23.5. Carefully tighten the puller until the output shaft bearing and 5th driven gear releases from the output shaft.

    Object Number: 895546  Size: SH
  41. Remove tools. Lift off transaxle case.
  42. Remove differential bearing retainer from transaxle case.
  43. Inspect the O-ring seal and axle seal for damage. Replace if damaged.

  44. Object Number: 895047  Size: SH

    Important: Do not re-install the bearing race until after the shimming procedure.

  45. Tap out differential bearing race using 87 92 202 and 87 91 204 .

  46. Object Number: 895040  Size: SH
  47. Remove the reverse gear fork and shaft.

  48. Object Number: 895053  Size: SH
  49. Put the transaxle in 4th gear by pushing the shift control shaft in.
  50. Remove the reverse shift lever assembly and bolts.

  51. Object Number: 895057  Size: SH
  52. Engage towards the reverse gear on the shift linkage assembly to access the shift control shaft bolt.
  53. Important: Make sure the TORX® socket fully engages the bolt prior to attempting removal.

    Important: Note the orientation of the shift shaft block.

  54. Remove the shift shaft bolt, the shift shaft, and the shaft block.

  55. Object Number: 895061  Size: SH
  56. Disengage the reverse on the shift linkage assembly. Remove the remaining shift linkage bolt and lift the mechanism slightly. Remove the locating sleeves.
  57. Put the transaxle in 2nd gear and remove the shift linkage assembly by moving it rearward, towards the differential, and angling it out while lifting.

  58. Object Number: 895064  Size: SH
  59. Lift the input shaft far enough to allow removal of the reverse idler gear shaft assembly. Remove the reverse idler gear shaft.

  60. Object Number: 895065  Size: SH
  61. Remove the 4th driven gear, crush sleeve, and spacer sleeve from the output shaft.

  62. Object Number: 1227188  Size: SH
  63. Install the 87 92 103 around the 1st gear and 1st/2nd gear synchronizer sleeve as shown. This tool holds the 1st and 2nd synchronizer assemblies together. Secure the tool with a plastic tie.

  64. Object Number: 895069  Size: SH
  65. Install the 87 91 410 on the output shaft.
  66. Install the 87 91 287 with the 87 91 295 under the 1st driven gear of the output shaft.
  67. Carefully tighten the puller until the remaining output shaft gears are up far enough to allow the removal of the input shaft, approximately 15 mm (0.6 in).
  68. Remove the input shaft.

  69. Object Number: 895072  Size: SH

    Important: Note the up/down orientation of the 3rd driven gear. If the old gear is installed, it must be installed in the same orientation to avoid noise concerns.

  70. Continue pulling the driven gears on the output shaft until all gears are loose.
  71. Remove the puller and gears from the output shaft.

  72. Object Number: 895074  Size: SH

    Notice: The output shaft bearing retainer bolts were installed using a threadlocker at the factory. A J43483 impact driver or equivalent must be used to remove these bolts or the bolt heads may strip out requiring additional repair time.

  73. Remove the output shaft bearing retainer bolts using the J 43483 or equivalent and remove the retainer.

  74. Object Number: 895077  Size: SH
  75. Remove the output shaft using the 87 91 188 , the 87 91 972 , and the 87 91 261 .

  76. Object Number: 1227206  Size: SH
  77. Remove the differential assembly.