GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 35451 Reverse Light Switch Socket
    • J 8001 Dial Indicator
    • J 26900-13 Magnetic Base
    • J 22912-01 Split - Plate Bearing Puller
    • J 1859-A Steering Wheel Puller
    • J 8433-1 Puller Bar

    Object Number: 235980  Size: SH
  1. Remove the clutch release fork and the clutch release bearing.
  2. Remove one retaining bolt and remove the vehicle speed sensor (VSS) from the transaxle case.
  3. Use the J 35451 to remove the backup switch.

  4. Object Number: 164054  Size: SH
  5. Remove the selecting bellcrank.
  6. Remove the lock bolt.
  7. Remove the shift and select lever assembly.
  8. Remove the engage gears.
  9. Remove the fifth gear lock nut.
  10. Remove the disengage gears.
  11. Remove the case side cover bolts.
  12. Remove the case side cover.

  13. Object Number: 379001  Size: SH
  14. Use the J 8001 with the J 26900-13 to measure the fifth gear thrust clearance. If the clearance is not 0.10-0.65 mm (0.0039-0.0256 in), you must use a selective snap ring on reassembly. Refer to Transmission Specifications #1.
  15. Remove the fifth gear shift fork lock bolt.
  16. Remove the fifth gear shift fork and synchronizer shift sleeve.
  17. Remove the fifth gear synchronizer snap ring.

  18. Object Number: 378989  Size: SH
  19. Attach the J 1859-A to the fifth gear synchronizer hub.
  20. Use the J 1859-A to remove the fifth gear synchronizer hub (1) .
  21. Remove the following components:
  22. • The synchronizer blocking ring
    • The needle roller bearing
    • The spacer
    • The fifth gear driven gear
  23. Unstake the fifth drive gear lock nut.
  24. Remove the fifth drive gear lock nut.

  25. Object Number: 379020  Size: SH
  26. Attach the J 22912-B and the J 8433-1 to the fifth drive gear.
  27. Use the J 22912-B and the J 8433-1 to remove the fifth drive gear.

  28. Object Number: 164059  Size: SH
  29. Remove the following components:
  30. • The needle roller bearing
    • The spacer
  31. Remove the rear bearing retainer.
  32. Remove two bearing snap rings.

  33. Object Number: 164060  Size: SH
  34. Remove the reverse idler gear shaft lock bolt.
  35. Use two screwdrivers and a hammer to remove the snap ring from the number 2 shift fork shaft.
  36. Remove the following components:
  37. • Three plugs
    • The lock bolt
    • The lock bolt assembly

    Object Number: 164151  Size: SH
  38. Use a magnetic finger to remove the following components:
  39. • Three seats
    • The springs
    • The balls

    Object Number: 378947  Size: SH
  40. Remove the case cover by removing 16 bolts.
  41. Carefully pry the case halves apart (1).

  42. Object Number: 378960  Size: SH
  43. Remove the reverse shift arm bracket.
  44. Remove the following components:
  45. • The reverse idler gear (2)
    • The thrust washer
    • The shaft

    Object Number: 164153  Size: SH
  46. Use two screwdrivers and a hammer to remove three snap rings. Remove 3 set bolts from the shift forks.
  47. Remove the following components:
  48. • The number 2 shift fork shaft
    • The shift head
  49. Use a magnetic finger to remove the two balls.
  50. Remove the following components:
  51. • The number 3 shift fork shaft
    • The reverse shift fork
  52. Pull out the number 1 shift fork shaft.
  53. Remove the following components:
  54. • The number 1 shift fork shaft
    • The number 2 shift fork shaft

    Object Number: 378964  Size: SH
  55. Remove the following components together:
  56. • The input shaft (1)
    • The output shaft (2)
  57. Remove the differential assembly.
  58. Remove the following components:
  59. • The magnet
    • The oil receiver

    Object Number: 378974  Size: SH
  60. Remove the differential assembly (1).
  61. Remove the following components:
  62. • The magnet
    • The oil receiver

    Object Number: 164154  Size: SH
  63. Use a feeler gage to measure the first gear thrust clearance. If the clearance is not 0.10-0.45 mm (0.0039-0.0177 in), replace both of the following components:
  64. • The first gear
    • The second gear

    Object Number: 164155  Size: SH
  65. Use a feeler gage to measure the second gear thrust clearance. If clearance is not 0.10-0.50 mm (0.0039-0.0197 in), replace both of the following components:
  66. • The second gear
    • The third gear

    Object Number: 164157  Size: SH
  67. Use a feeler gage to measure the third gear thrust clearance. If the clearance is not 0.10 - 0.40 mm (0.0039 - 0.0157 in), replace both of the following components:
  68. • The third gear
    • The fourth gear

    Object Number: 164158  Size: SH
  69. Use a feeler gage to measure the fourth gear thrust clearance. If the clearance is not 0.10-0.60 mm (0.0039-0.0236 in) replace both of the following components:
  70. • The fourth gear
    • The fifth gear

    Object Number: 164159  Size: SH
  71. With the needle roller bearing installed, use a J 8001 to measure the oil clearance between the gear and the input shaft. If the clearance is not 0.015-0.070 mm (0.0006-0.0028 in), replace the gear, the needle roller bearing, or the shaft.

  72. Object Number: 164160  Size: SH
  73. Remove the snap ring from the input shaft.

  74. Object Number: 165623  Size: SH
  75. Use a J 22912-01 with a press to remove the radial ball bearing.
  76. Remove the following components:
  77. • The fourth gear
    • The needle roller bearing
    • The synchronizer ring

    Object Number: 164163  Size: SH
  78. Remove the snap ring from the shaft.

  79. Object Number: 165620  Size: SH
  80. Use a J 22912-01 with a press to remove the following components:
  81. • The number 2 hub sleeve
    • The third gear synchronizer ring
    • The needle roller bearing

    Object Number: 164168  Size: SH
  82. Use a J 22912-01 with a press to remove the following components:
  83. • The radial ball bearing
    • The fourth driver gear
  84. Remove the spacer.

  85. Object Number: 164024  Size: SH
  86. Remove the shift number 1 hub sleeve into the first gear.
  87. Use a J 22912-01 with a press to remove the following components:
  88. • The third driven gear
    • The second gear
  89. Remove the following components:
  90. • The needle roller bearing
    • The spacer
    • The synchronizer ring

    Object Number: 164030  Size: SH
  91. Remove the snap ring number 1 hub sleeve assembly.

  92. Object Number: 165615  Size: SH
  93. Use a press to remove the following components:
  94. • The number 1 hub
    • The first gear
    • The synchronizer ring
  95. Remove the following components:
  96. • needle roller bearing
    • The thrust washer
    • The locking ball