GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 21368 Pump Body Cover Alignment Band


    Object Number: 801912  Size: SH
  1. Inspect the bushing (215) for wear - not serviceble.

  2. Object Number: 801913  Size: SH
  3. Inspect the oil pump parts for the following:
  4. • Worn, scored or gouged pump slide
    • Cracks, wear or damage to the rotor or vanes
    • Cuts or damage to the seals
    • Broken priming springs

    Object Number: 801914  Size: SH
  5. Inspect the oil pump housing for the following:
  6. • Porosity
    • Interconnected oil passages
    • Damaged machined surfaces

    Object Number: 801915  Size: SH
  7. Inspect the valves (207, 210, 235) and springs (208, 209, 234, 238, 219) for the following:
  8. • Nicks or burrs on the valves
    • Worn, distorted or cracked springs

    Object Number: 801909  Size: SH
  9. Install the tcc control valve (235) and the tcc control valve spring (234).
  10. Install the tcc control valve spring retainer (204).

  11. Object Number: 801908  Size: SH
  12. Install the pressure relief valve (239) and spring (238).
  13. Install the pressure valve spring retainer (211).

  14. Object Number: 801907  Size: SH
  15. Install the new pump cover seal (212) onto the new pump cover screen (213).
  16. Install the pump cover screen (213).
  17. Install the pump cover screen pin (211).

  18. Object Number: 801906  Size: SH
  19. Install the pressure regulator valve (210), the pressure regulator valve spring (209), and the line boost valve spring (208).
  20. Install the line boost valve bushing seal (205) onto the bushing (206).
  21. Install the line boost valve (207) and the bushing (206).
  22. Install the line boost valve bushing retainer (204).

  23. Object Number: 801905  Size: SH
  24. Install the reverse clutch housing fluid seal rings (200).

  25. Object Number: 851063  Size: SH
  26. Measure the distance from the bottom of the gage bar to the pump body. Refer to Transmission Fluid Pump Specifications .
  27. Measure the thickness of pump slide (216).
  28. Select the proper size, refer to Transmission Fluid Pump Specifications .
  29. Measure the thickness of the pump rotor (223).
  30. Select the proper size rotor refer to Transmission Fluid Pump Specifications .

  31. Object Number: 801904  Size: SH
  32. Install the fluid pump support (217), the slide seal (218) and the fluid pump slide rings (220), and the fluid pump slide o-ring seal (242) onto the pump slide (216).
  33. Install the slide pin (231).
  34. Important: The fluid pump slide (216) is selective.

  35. Install the pump slide (216).
  36. Using a screwdriver install the slide spring (219).

  37. Object Number: 801903  Size: SH
  38. Install the fluid pump vane ring (225).
  39. Install the pump rotor guide (224).
  40. Important: The fluid pump rotor (223) is selective.

  41. Install the pump rotor (223).
  42. Install the pump vanes (222).
  43. Install the pump vane ring (221).

  44. Object Number: 801902  Size: SH
  45. Install the pump cover housing (202) onto the converter housing (224).

  46. Object Number: 801916  Size: SH
  47. Install J 21368 and tighten.

  48. Object Number: 801917  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  49. Install the oil pump housing bolts (240, 241).
  50. Tighten

        • Tighten the fluid pump housing bolts (240) to 11 N·m (8 lb ft).
        • Tighten the fluid pump housing bolts (241) to 22 N·m (16 lb ft).
  51. Remove J 21368 .