GM Service Manual Online
For 1990-2009 cars only

Disassembly Procedure

Tools Required

    • J 33163 Valve Tray Set
    • J 43773 Valve Spring Compressor

    Notice: Refer to Transmission Control Valve Body Overhaul Notice in the Preface section.


    Object Number: 1331354  Size: SH
  1. Position the control valve module on the work table so that the main valve body module is facing up.
  2. Remove six bolts (1) and one bolt (2) retaining the reverse signal pipe and transmission fluid pressure (TFP) switch to the main valve body.

  3. Object Number: 1331367  Size: SH
  4. Remove reverse signal pipe (2) from main valve body (3).
  5. Remove the TFP switch (1) from main valve body (3).

  6. Object Number: 1332352  Size: SH
  7. Remove the 2 bolts (1) retaining the modulated main pressure solenoid G valve body (2).
  8. Remove the modulated main pressure solenoid G valve body assembly (2).
  9. Remove the modulated main pressure solenoid G retainer (5) from the bottom of the valve body (2).
  10. Remove the modulated main pressure solenoid G (6).
  11. Remove the 2 O-rings (3 and 4) from the modulated main pressure solenoid G (6).

  12. Object Number: 1331372  Size: SH
  13. Remove the torque converter clutch pulse width modulated (TCC PWM) solenoid retainer (1).
  14. Remove the TCC PWM solenoid (7), sleeve (4), valve (3), and spring (2).
  15. Remove O-rings (5) and (6) from the TCC PWM solenoid (7).

  16. Object Number: 1331377  Size: SH
  17. Remove shift solenoid D retainer (1).
  18. Remove shift solenoid D (4).
  19. Remove the O-rings (2 and 3) from shift solenoid D (4).

  20. Object Number: 1331380  Size: SH
  21. Remove shift solenoid retainer E (1).
  22. Remove shift solenoid E (4).
  23. Remove the O-rings (2) and (3) from shift solenoid E (4).

  24. Object Number: 1331541  Size: SH
  25. Remove the 3 bolts (1) that retain the pressure control solenoid retaining bracket (2) to main valve body (3).

  26. Object Number: 1331385  Size: SH
  27. Remove the pressure control solenoid retaining bracket (1), 2 accumulator springs (2), and 2 accumulator plugs (3).
  28. Remove pressure control solenoid A (15), valve (13), spring (12), valve (11), and spring (10).
  29. Remove pressure control solenoid B (9), valve (7), valve (6), and spring (5).
  30. Remove O-ring (14) from pressure control solenoid A (15).
  31. Remove O-ring (8) from pressure control solenoid B (9).

  32. Object Number: 1331386  Size: SH
  33. Position the control valve module on the work table so that shift valve body (1) is facing up.
  34. Remove shift solenoid C retainer (2).
  35. Remove shift solenoid C (5).
  36. Remove O-rings (3 and 4) from shift solenoid C (5).

  37. Object Number: 1331387  Size: SH
  38. Remove eleven bolts (1) retaining the shift valve body and the main valve body together.
  39. Position the control valve module on the work table so that the main valve body is facing up. Reinstall four bolts (1) so that the bolts are partially threaded into the shift valve body and protrude from the main valve body.
  40. Position the control valve module on edge so that the top and bottom are vertical.
  41. Gently tap the bolts until the module separates.

  42. Object Number: 1331397  Size: SH
  43. Position the control valve assembly on the work table so that shift valve body (1) is facing up.
  44. Separate shift valve body assembly (1), separator plate (2), and main valve body assembly (4).

Disassembly of Shift Valve Body


    Object Number: 795162  Size: SH
  1. Using J 43773  (2) , compress the C shift valve spring until retaining clip (1) is loose. Remove retaining clip (1).

  2. Object Number: 795163  Size: SH
  3. Remove spring (2) and C shift valve (1).

  4. Object Number: 795164  Size: SH
  5. Using J 43773  (2), compress the E shift valve spring until retaining clip (1) is loose. Remove retaining clip (1).

  6. Object Number: 795166  Size: SH
  7. Remove plug (3), spring (2), and E shift valve (1).

  8. Object Number: 795169  Size: SH
  9. Using J 43773  (2), compress the D shift valve spring until retaining clip (1) is loose. Remove retaining clip (1).

  10. Object Number: 795170  Size: SH
  11. Remove plug (3), spring (2), and D shift valve (1).

  12. Object Number: 795171  Size: SH
  13. Using J 43773  (2), compress the control main valve spring until retaining clip (1) is loose. Remove retaining clip (1).

  14. Object Number: 795173  Size: SH
  15. Remove spring (2) and control main valve (1).

  16. Object Number: 795175  Size: SH
  17. Remove solenoid screen (1).

Disassembly of Main Valve Body

Tools Required

    • J 33163 Valve Tray Set
    •  J 43773 Valve Spring Compressor

    Object Number: 795154  Size: SH
  1. Using J 43773  (2), compress the control relief spring until the retaining clip (1) is loose. Remove the retaining clip (1).

  2. Object Number: 795156  Size: SH
  3. Remove the spring (2) and the control relief valve (1).

  4. Object Number: 795159  Size: SH
  5. Using J 43773 , compress the exhaust backfill spring until the retaining clip (1) is loose. Remove the retaining clip (1).

  6. Object Number: 795161  Size: SH
  7. Remove the spring (2) and the backfill exhaust valve (1).