GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2001 🢒 Cavalier 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 3T40 🢒 Control Valve Body Disassemble

Caution: Valve springs can be tightly compressed. Use care when removing retainers and plugs. Personal injury could result.

Important: Disassemble the control valve assembly on a clean surface.

Important: Lay all valves, springs, and bushings on a clean surface in exactly the same order in which you removed them. This will aid in reassembling the control valve body.


    Object Number: 20750 Size: SH
  1. Remove the low blow off valve plug (326).
  2. Remove the low blow off valve spring (325) and the valve seat (325).
  3. Remove the low blow off ball valve  (324).

    4. Object Number: 20751 Size: SH
  4. Remove the retaining pin (304) from the 1-2 throttle valve sleeve.
  5. Remove the 1-2 throttle valve sleeve, the valve, and the spring (323).
  6. Remove the 1-2 throttle valve retainer (377) from the sleeve (323).
  7. Remove the 1-2 throttle valve (321) and the spring (322) from the sleeve (323).
  8. Remove the 1-2 shift valve (320).

    9. Object Number: 20752 Size: SH
  9. Remove the retaining pin (304) from the 2-3 throttle valve sleeve.
  10. Remove the 2-3 throttle valve sleeve, the valve, and the spring (319).
  11. Remove the 2-3 throttle valve retainer (377) from the sleeve (319).
  12. Remove the 2-3 throttle valve (317), and the spring (318) from the sleeve (319).
  13. Remove the 2-3 shift valve (316).

    14. Object Number: 20753 Size: SH
  14. Remove the 1-2 accumulator valve and spring retaining pin (304).
  15. Remove the valve bore plug (310) and the valve (315).
  16. Remove the valve spring (313).

    17. Object Number: 20754 Size: SH
  17. Remove the spring retainer pin (307) for the pressure relief ball valve from the control valve and oil pump assembly (21).
  18. Remove the spring (312) and the ball valve (311).

    19. Object Number: 20755 Size: SH
  19. Remove the shift throttle valve and spring retaining pin (304).
  20. Remove the valve bore plug (310\382), the spring (309) and the valve (308).

    21. Object Number: 20756 Size: SH
  21. Remove the bore plug retainer (373) for the pressure regulator.
  22. Remove the bore plug (372).
  23. Remove the line boost plug retaining pin (305).
  24. Remove the line boost valve bore plug (302).
  25. Remove the line boost valve (303).

    26. Object Number: 20757 Size: SH
  26. Remove the throttle valve and bushing retaining pin (304).
  27. Remove the throttle valve plunger (367) and the spring (368).
  28. Remove the throttle valve bushing retaining pin (306).
  29. Remove the throttle valve (369).

    30. Object Number: 20758 Size: SH
  30. Remove the throttle valve and reverse boost sleeve retaining pin (371).
  31. Remove the throttle valve boost bore plug retainer (376), the plug (375) and the valve (361).
  32. Remove the reverse boost valve (363), the TV and reverse boost valve spring (360), the reverse regulator spring (364) and the pressure regulator valve (365).

    33. Object Number: 20759 Size: SH
  33. Remove the retaining pin (307) for the 3-2 regulating control valve.
  34. Remove the spring (355).
  35. Remove the valve (356).