GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 24204-2 Bar and Stud Assembly
    • J 43776 4-5 Clutch Piston Return Spring Compressor
    • J 43777 1-2-3-4 Clutch Piston Return Compressor
    • J 44525 1-2-3-4 Clutch Backing Plate Selector

    Object Number: 1217052  Size: SH
  1. Install the piston seal rings (1, 2, 3) onto the 4-5 clutch piston (4).
  2. Lubricate the 4-5 clutch balance piston seal (3), the piston inside diameter (ID) and outside diameter (OD), and the seal rings (1, 2) with Transjel®.

  3. Object Number: 1217054  Size: SH
  4. Position the 1-2-3-4, 4-5 clutch housing (2) on the work table so that the rear of the housing is facing up.
  5. Install O-ring (1) into the bottom groove on the inner hub of the 1-2-3-4, 4-5 clutch housing (2).

  6. Object Number: 1217053  Size: SH
  7. Position the 4-5 clutch piston (3) on the work table so that the rear of the piston is facing up.
  8. Align the 4-5 clutch balance piston (2) so that the rubber seal is facing down.
  9. Install the 4-5 clutch balance piston (2) onto the 4-5 clutch piston (3).
  10. Lubricate the rubber seals on the 4-5 clutch balance piston (2) with Transjel®.
  11. Install the 4-5 clutch piston (3), with the 4-5 clutch balance piston (2) attached, into the 1-2-3-4, 4-5 clutch housing (4).
  12. Make sure the 4-5 clutch piston (3) is seated on the 1-2-3-4, 4-5 clutch housing (4).
  13. Push the 4-5 clutch balance piston (2) below the retaining ring groove on the 1-2-3-4, 4-5 clutch housing (4).
  14. Install the retaining ring (1) into the 1-2-3-4, 4-5 clutch housing (4).
  15. Make sure the retaining ring (1) is seated completely around the 1-2-3-4, 4-5 clutch housing (4).

  16. Object Number: 1217056  Size: SH
  17. Align the 4-5 clutch piston return spring assembly (2) so that the notches of the spring assemblies are facing and aligned with the tangs of the 4-5 clutch piston (4).
  18. Install the 4-5 clutch piston return spring assembly (2) into the 4-5 clutch piston (4).
  19. Align the 1-2-3-4 clutch piston housing (1) so that the rear of the housing is facing up.
  20. Install the 1-2-3-4 clutch piston housing (1) into the 4-5 clutch piston (4).

  21. Object Number: 1217057  Size: SH
  22. Position the 1-2-3-4, 4-5 clutch housing (8) on the base of J 24204-2  (10) so that the rear of the housing is facing up.
  23. Install J 43776 -1 (7) onto the shaft of J 24204-2 with the bowl down.
  24. Install the retaining ring (6) onto the surface of J 43776 -2 (7) .
  25. Install the spring (5) of J 43776 onto the shaft of J 24204-2 .
  26. Install J 43776 -2 (4) onto the shaft of J 24204-2 .
  27. Align a notch of J 43776 -2 (4) with the ball of the 1-2-3-4 clutch piston housing.
  28. Install the J 24204-2 ball bearing (3) and washer (2) onto the shaft of J 24204-2 .
  29. Install the J 24204-2 wing nut (1) onto the shaft of J 24204-2 .
  30. Compress the 4-5 clutch piston return spring assembly until the retaining ring groove on the inner hub of the 1-2-3-4, 4-5 clutch housing (8) is visible.
  31. Install the retaining ring (6) into the 1-2-3-4, 4-5 clutch housing inner hub.
  32. Make sure the retaining ring (6) is seated all around the clutch housing (8).
  33. Remove all J tools except for the base of J 24204-2 .

  34. Object Number: 1217058  Size: SH
  35. Install the 1-2-3-4 clutch piston ID seal ring (1) and the 1-2-3-4 clutch piston OD seal ring (2) onto the 1-2-3-4 clutch piston (3).
  36. Lubricate the seal rings with Transjel®.

  37. Object Number: 1217059  Size: SH
  38. Position the 1-2-3-4, 4-5 clutch housing (3) on the work table so that the rear of the housing is facing up.
  39. Align the 1-2-3-4 clutch piston (2) so that the spring indents are facing up.
  40. Install the 1-2-3-4 clutch piston (2) into the 1-2-3-4 clutch piston housing (4).
  41. Make sure the 1-2-3-4 clutch piston (2) is seated in the 1-2-3-4 clutch piston housing (4).
  42. Align the 1-2-3-4 clutch piston return spring assembly (1) so that the springs are facing and aligned with the spring pockets of 1-2-3-4 clutch piston (2).
  43. Install the 1-2-3-4 clutch piston return spring assembly (1) into the 1-2-3-4 clutch piston (2).

  44. Object Number: 1217061  Size: SH
  45. Position the 1-2-3-4, 4-5 clutch housing (7) on the base of J 24204-2  (8) so that the rear of the housing is facing up.
  46. Install the retaining ring (6) into the inner hub of the 1-2-3-4, 4-5 clutch housing.
  47. Install J 43777  (5) onto the shaft of J 24204-2  (8).
  48. Center J 43777  (5) on the 1-2-3-4 clutch piston return spring assembly.
  49. Install the J 43777 extension (4) onto the shaft of J 24204-2 .
  50. Install the J 24204-2 ball bearing (3) and washer (2) onto the shaft of J 24204-2 .
  51. Install the J 24204-2 wing nut (1) on the shaft of J 24204-2 .
  52. Compress the 1-2-3-4 clutch piston return spring assembly until the retaining ring groove on the 1-2-3-4, 4-5 clutch housing inner hub is visible.
  53. Install the retaining ring (6) into the 1-2-3-4, 4-5 clutch housing inner hub.
  54. Remove tools J 24204-2 and J 43777 .

  55. Object Number: 1217062  Size: SH
  56. Position the 1-2-3-4, 4-5 clutch housing (3) on the work table so that the rear of the housing is facing up.
  57. Lubricate the rubber seals on the 1-2-3-4 clutch balance piston (2) with Transjel®.
  58. Align the 1-2-3-4 clutch balance piston (2) so that the rubber seal is facing down.
  59. Install the 1-2-3-4 clutch balance piston (2) between the 1-2-3-4 clutch piston and the 1-2-3-4 clutch piston housing.
  60. Press the 1-2-3-4 clutch balance piston (2) into the 1-2-3-4 clutch piston housing until the 1-2-3-4 clutch balance piston is below the retaining ring groove on the 1-2-3-4 clutch piston housing.
  61. Install the retaining ring (1).
  62. Make sure the retaining ring (1) is seated in the groove.

  63. Object Number: 1217064  Size: SH
  64. Install 2 overlap seal rings (4) onto the turbine shaft (3).
  65. Position the turbine shaft (3) on the work table so that the rear of the shaft is facing up.
  66. Align the 1-2-3-4, 4-5 clutch housing (2) with the rear of the turbine shaft (3) so that the rear of the clutch housing is facing up.
  67. Install the 1-2-3-4, 4-5 clutch housing (2) onto the rear of turbine shaft (3).
  68. Install the retaining ring (1) onto the turbine shaft (3).
  69. Make sure the retaining ring (1) is seated completely around the turbine shaft (3).

  70. Object Number: 1217065  Size: SH
  71. Starting with a 1-2-3-4 clutch steel plate, alternately install six 1-2-3-4 clutch steel plates (2) and six 1-2-3-4 clutch fiber plates (1) onto the turbine shaft (3).

  72. Object Number: 1217068  Size: SH
  73. Align J 44525 -3 (3) with the turbine shaft so that the countersunk holes of J 44525 -3 are facing up.
  74. Install J 44525 -3 (3) onto the turbine shaft.
  75. Align J 44525 -1 (2) with the turbine shaft so that the inner ridge of J 44525 -1 is facing down.
  76. Slide the inner ridge of J 44525 -1 (2) into the turbine shaft retaining ring groove.
  77. Align the holes in J 44525 -1 (2) with the countersunk holes of J 44525 -3 (3).
  78. Notice: Refer to Fastener Notice in the Preface section.

  79. Hand install 2 bolts (1) of J 44525 into the holes of J 44525 -1 (2).
  80. Tighten
    Tighten the bolts to 1.8 N·m (16 lb in).


    Object Number: 1217069  Size: SH

    Important: The shift quality of the transmission depends heavily upon selecting the correct 1-2-3-4 clutch backing plate.

  81. Perform the following for each tab of J 44525 -2 (1):
  82. • Place the flat surface, tabbed end, of J 44525 -2 (1) onto the top surface of J 44525 -3 (3).

       Important: At most, 2 of the different tabs will fit into the retaining ring groove.

    • Try to slide the tabbed end of J 44525 -2 (1) into the retaining ring groove on the turbine shaft.
    • If a tab fits into the retaining ring groove, record the 4-digit ID number located on the stem of J 44525 -2 that is associated with the tab. Refer to Selective Components Specifications to determine the correct backing plate.
  83. Select a 1-2-3-4 clutch backing plate as follows:
  84. • If no tab of J 44525 -2 fits into the retaining ring groove, select the 1-2-3-4 clutch backing plate with ID No. 6221 or 8521.
    • If one or more tabs of J 44525 -2 fit into the retaining ring groove, select the 1-2-3-4 clutch backing plate with an ID No. corresponding to the highest number recorded in the previous step.
  85. Remove J 44525 from the turbine shaft.

  86. Object Number: 1217070  Size: SH
  87. Align the selected 1-2-3-4 clutch backing plate (3) so that the beveled edge of the backing plate is facing up.
  88. Install the 1-2-3-4 clutch backing plate (3) onto the turbine shaft (4).
  89. Install the retaining ring (2) onto the turbine shaft (4).
  90. Lift the 1-2-3-4 clutch backing plate (3) and install the spiral retaining ring (1) into the 1-2-3-4 clutch backing plate (3).

  91. Object Number: 1217071  Size: SH

    Notice: Installing the thrust bearing assembly onto the rear of the turbine shaft in the wrong direction may cause permanent damage to the transmission. The blue stripe must be visible.

  92. Align the thrust bearing assembly (2) so that the blue stripe on the thrust bearing assembly is facing away from the turbine shaft (3).
  93. Install the thrust bearing assembly (2) into the turbine shaft (3).
  94. Make sure the blue stripe on the thrust bearing assembly is visible.
  95. Center the 1-2-3-4 clutch plates (4).
  96. Install the 1-2-3-4 clutch drive hub (1) over the 1-2-3-4 clutch plates (4).
  97. Make sure the 1-2-3-4 clutch drive hub (1) has seated on the thrust bearing assembly (2).

  98. Object Number: 1409527  Size: SH

    Notice: Installing the thrust bearing assembly onto the rear of the 1-2-3-4 drive hub in the wrong direction may cause permanent damage to the transmission. The blue stripe must be visible.

  99. Align the thrust bearing assembly (2) so that the blue stripe on the thrust bearing assembly is facing away from the 1-2-3-4 clutch drive hub (3).
  100. Install the thrust bearing assembly (2) onto the rear of the 1-2-3-4 clutch drive hub (3).
  101. Make sure the blue stripe on the thrust bearing assembly is visible.
  102. Align the 4-5 clutch drive hub (1) so that the smaller end is facing up.
  103. Install the 4-5 clutch drive hub (1).

  104. Object Number: 1217074  Size: SH
  105. Starting with a 4-5 clutch steel plate, alternately install seven 4-5 clutch steel plates (2) and six 4-5 clutch fiber plates (1) into the 1-2-3-4, 4-5 clutch housing.

  106. Object Number: 1217075  Size: SH
  107. Align the tangs of the bronze thrust washer (1) with the holes in the 4-5 clutch drive hub (2).
  108. Install the bronze thrust washer (1) onto the 4-5 clutch drive hub (2).

  109. Object Number: 1217076  Size: SH
  110. Align the input sun gear (3) so that the gear teeth of the sun gear face the concave face of the input sun gear flange (2).
  111. Install the input sun gear (3) into the input sun gear flange (2).
  112. Make sure the splines are engaged.
  113. Hold the sun gear and align the double wide splines of the input sun gear flange (2) with the double wide spaces on the 1-2-3-4, 4-5 clutch housing (4).
  114. Install the input sun gear (3) with the input sun gear flange (2) into the 1-2-3-4, 4-5 clutch housing (4).
  115. Install the retaining ring (1) into 1-2-3-4, 4-5 clutch housing (4).
  116. Make sure the retaining ring is seated all the way around the 1-2-3-4, 4-5 clutch housing.
  117. Remove tools J 24204-2 and J 43777 .