GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 8433 Two Jaw Puller


    Object Number: 1955632  Size: SH
  1. Remove the drain plug (3) and drain the transmission fluid and discard washer.
  2. Discard the washer.


    Object Number: 1954137  Size: SH
  3. Remove the backup lamp switch (2) and washer (1) from the case.
  4. Discard the washer.


    Object Number: 1954135  Size: SH
  5. Remove the output sensor (1) and bolt (2) from the rear extension housing.

  6. Object Number: 1996500  Size: SH
  7. Using a suitable tool, release the staking of the propshaft flange nut (3).
  8. Remove the thrust washer (2) from the propshaft flange assembly.
  9. Remove the propshaft flange nut (3) and propshaft flange assembly (1).
  10. Notice: Refer to General Repair Instructions in the Preface section.


    Object Number: 1954144  Size: SH
  11. To release the staking, insert a suitable tool into the gap between the select shift lever retainer (2) and the rod.
  12. Using a suitable tool, rotate the select shift lever retainer (2) forward.
  13. Using a suitable tool, remove the shift lever pin (1).

  14. Object Number: 1955553  Size: SH
  15. Remove the shift lever rod universal joint (1), damper (2) and select shift lever retainer (3) from the end of the shift selector.

  16. Object Number: 1954148  Size: SH
  17. Remove the transmission housing to extension housing retaining bolts (1).
  18. Remove the extension housing (2) from the transmission..

  19. Object Number: 1954150  Size: SH
  20. Remove the rear output shaft rear bearing spacer (1) from the main shaft.
  21. Remove the vehicle speed sensor drive gear (2) from the main shaft.
  22. Remove the locking ball (3) from the main shaft.
  23. Remove the main shaft bearing oil slinger (4) from the main shaft.

  24. Object Number: 1954155  Size: SH
  25. Remove the transmission case to clutch housing inner retaining bolts (1).
  26. Remove the transmission case to clutch housing outer retaining bolts (2).

  27. Object Number: 1954157  Size: SH
  28. Remove the clutch housing hole plug (1) from the clutch housing.

  29. Object Number: 1954162  Size: SH
  30. Remove the following components from the rear case housing:
  31. • the shift shaft detent plug (3)
    • the shift shaft detent spring (2)
    • the shift shaft detent pin (1)

    Object Number: 1954160  Size: SH
  32. Remove the intermediate case to rear case housing retaining bolts (1).
  33. Notice: Refer to Machined Surface Damage Notice in the Preface section.

  34. Using a suitable tool, separate the rear case housing from the intermediate case housing.
  35. Remove the rear case housing.

  36. Object Number: 1954165  Size: SH
  37. Remove the oil trough to intermediate case housing retaining bolts (1).
  38. Remove the oil trough (2) from the intermediate case housing.

  39. Object Number: 1954167  Size: SH
  40. Remove the oil trough pipe (1) from the intermediate case.
  41. Remove the reverse idler gear shaft to intermediate case retaining bolt (2).
  42. Remove the reverse idler gear shaft washer (3) from the retaining bolt and discard.
  43. Discard the washer.

    Notice: Refer to Machined Surface Damage Notice in the Preface section.


    Object Number: 1954170  Size: SH
  44. Using a suitable tool, separate the intermediate case (1) from the front clutch housing (2).
  45. Remove the intermediate case housing (1) from the clutch housing.

  46. Object Number: 1954172  Size: SH
  47. Remove the shift shaft selector lever (1) from the clutch housing (2).

  48. Object Number: 1954175  Size: SH
  49. Remove the rear output shaft (1), input shaft bearing (2) and blocking ring (3) from the 6th gear synchronizer assembly.

  50. Object Number: 1954198  Size: SH
  51. Remove the reverse idler gear bearing (3), reverse idler gear (2) and the reverse idler gear shaft (1).

  52. Object Number: 1954199  Size: SH
  53. Remove the shift counter lever bracket (2) to clutch housing retaining bolts (1).

  54. Object Number: 1954200  Size: SH
  55. Remove the front counter shaft bearing to clutch housing snap ring (1).

  56. Object Number: 1954201  Size: SH
  57. Using a suitable tool, tap on transmission front case (1) in order to disengage the countershaft bearing's snap ring.

  58. Object Number: 1954202  Size: SH
  59. Remove the rear input shaft bearing to clutch housing snap ring (1).

  60. Object Number: 1954201  Size: SH
  61. Hold the countershaft. Using a suitable tool tap on the transmission front case (1) in order to disengage the snap ring. Separate the input shaft and countershaft from clutch housing.

  62. Object Number: 1954203  Size: SH
  63. Remove the input shaft (1), countershaft and shift rails as an assembly from the clutch housing (2).

  64. Object Number: 1954204  Size: SH
  65. Separate the shift rails (1), the input shaft (2) and countershaft (3).