GM Service Manual Online
For 1990-2009 cars only

Disassemble

Special Tools

    • DT 47522 (DW 260-170) Valve Lifter Attachment
    • DT 47523 (DW 260-180) Valve Lifter
    • DT 47529 (DW 260-240) Spring Pin Remover
    • DT 47531 (DW 260-260) Output Gear Holder
    • DT 47532 (DW 260-270) Output Gear Locknut Remover/Installer

    Object Number: 1348655  Size: SH
  1. Remove the torque converter (1).
  2. Remove the bolts and the bracket (2).

  3. Object Number: 1348656  Size: SH
  4. Remove the bolts, the brackets (2,3) and the select cable bracket (1).

  5. Object Number: 1348657  Size: SH

    Note: Remove the O-ring. Do not reuse O-ring.

  6. Remove the bolts and the oil cooler (1).

  7. Object Number: 1348658  Size: SH
  8. Remove the bolts, and the oil filler tube (1).

  9. Object Number: 1348660  Size: SH
  10. Using DT 47529   (1), remove the spring pin (3) and the select lever assembly (2).

  11. Object Number: 1348469  Size: SH
  12. Remove the bolt and the shift lever switch (1).

  13. Object Number: 1348662  Size: SH
  14. Remove the bolt and the turbine sensor (1).

  15. Object Number: 1348470  Size: SH
  16. Remove the bolt and the vehicle speed sensor (1).

  17. Object Number: 1348666  Size: SH

    Note: 

       • Remove any residual sealant from the housing and case surfaces.
       • Ensure that all sealant has been removed.

  18. With the converter housing facing (1) upward, remove the installation bolts. Then remove the housing, tapping it lightly with a plastic hammer.

  19. Object Number: 1348667  Size: SH
  20. Remove the differential assembly (1).

  21. Object Number: 1348668  Size: SH

    Note: When removing the oil pump, be careful not to drop the input shaft.

    Note: For a transmission with lock-up function, be careful not to damage the O-ring between the input shaft and the torque converter.

  22. Remove the O-ring of the input shaft, and then remove the bolts and the oil pump (2).

  23. Object Number: 1348670  Size: SH
  24. Remove the reduction gear (1).

  25. Object Number: 1348671  Size: SH
  26. Remove the stopper bolt, the parking pawl (4), pawl spring (3), the pawl shaft, and the pawl collar.
  27. Remove the bolts and the support actuator (1).

  28. Object Number: 1348672  Size: SH

    Note: Do not separate the stiffener from the pan with a screwdriver.

    Note: Ensure that all sealant has been removed.

  29. Remove the oil pan (1) installation bolts with the pan facing upward. Then, remove the stiffener (2) and the pan, tapping lightly with a plastic hammer.
  30. Remove any residual sealant from the pan and case surfaces.
  31. Remove the magnets from the oil pan.

  32. Object Number: 1348673  Size: SH
  33. Remove the connector from each solenoid (2).
  34. Remove the bolts which secure the oil temperature sensor (1) to the ground, and remove the control valve installation bolts. Then, remove the valve (3).

  35. Object Number: 1348675  Size: SH

    Note: Do not pull on the harness when removing the connector.

  36. While pushing the tabs (2), pull the solenoid connector (1) out from the case.

  37. Object Number: 1348676  Size: SH
  38. Remove the nut while holding the width across flats of the manual shaft (1), then remove the manual plate (2).

  39. Object Number: 1348678  Size: SH
  40. Remove the manual shaft lock bolt (2), and pull out the manual shaft (1).

  41. Object Number: 1348679  Size: SH
  42. Remove the E-ring (1), then remove the parking lever and the parking rod as a unit.

  43. Object Number: 1348680  Size: SH

    Note: Remove the O-rings from the end and face of the case.

    Note: Ensure that all sealant has been removed.

  44. Remove the side cover installation (1) bolts with facing upward, and then remove the covers.
  45. Do not separate the side cover from the case with a screwdriver.
  46. Remove any residual sealant from the surfaces of the side cover and case completely.

  47. Object Number: 1348684  Size: SH

    Note: To prevent the case from being scratched when removing the snap ring with a screwdriver, smooth the surface of the case with sandpaper. (This also prevents the O-ring from being scratched when re-assembling.)

  48. Remove the snap ring with a flat head screwdriver, and pull the band servo cover (1) out with a pair of pliers.

  49. Object Number: 1348685  Size: SH

    Note: Temporarily tighten the lock nut to prevent the air vent pin from coming out.

  50. Hold the piston stem (1), and loosen the locknut.
  51. Loosen the piston stem.

  52. Object Number: 1348687  Size: SH
  53. Remove the reverse clutch drum (1).

  54. Object Number: 1348688  Size: SH

    Note: To prevent cracking when expanding the brake band, bind it with wire.

  55. Remove the brake.
  56. Remove the anchor end pin (2).

  57. Object Number: 1348689  Size: SH

    Note: Be careful not to drop the bearings from the both sides of high clutch assembly.

  58. Remove the high clutch assembly (1).

  59. Object Number: 1348692  Size: SH
  60. Remove the high clutch hub (1).

  61. Object Number: 1348693  Size: SH

    Note: Be careful not to drop bearings from the side cover side and the bearing race on the torque converter side of the front sun gear assembly.

  62. Remove the front sun gear assembly (1).

  63. Object Number: 1348694  Size: SH
  64. Using DT 47523  (1) and DT 47522  (2), remove the snap ring (3) from the band servo piston.

  65. Object Number: 1348695  Size: SH

    Note: The band servo piston may spring out because of the piston spring force. Be careful not to drop the piston.

  66. Lightly tap the piston stem (1) with a plastic hammer, and remove the band servo piston with the reaction force of the piston spring.

  67. Object Number: 1348696  Size: SH

    Note: Be careful not to drop the bearing from the side cover side and the race-combined bearing from the torque converter side of the front carrier.

  68. Remove the snap ring; then remove the front carrier (1) and the low 1-way clutch as a unit.

  69. Object Number: 1348698  Size: SH
  70. Remove the rear sun gear (1).

  71. Object Number: 1348699  Size: SH

    Note: Be careful not to drop the bearing from the side cover side and the race-combined bearing from the torque converter side of the rear carrier assembly.

  72. Remove the rear carrier assembly (1).

  73. Object Number: 1348701  Size: SH

    Note: Be careful not to drop the bearing from the side cover side and the race-combined bearing from the torque converter of the rear internal gear.

  74. Remove the rear internal gear (1).

  75. Object Number: 1348702  Size: SH

    Note: Be careful not to drop the race-combined bearings from the torque converter side of the low clutch assembly.

  76. Remove the low clutch assembly (1) as a unit.

  77. Object Number: 1348704  Size: SH
  78. Hold the output gear using the DT 47531  (1) and remove the output gear locknut gear using DT 47532  (2).
  79. Remove the output gear.

  80. Object Number: 1348706  Size: SH
  81. Remove the converter housing and the differential side oil seal (1) of the case.
  82. Remove the input shaft oil seal from the converter housing.