GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 43770 Main, Lube, Converter Relief Valve Spring Compressor
    • J 43772 Torque Converter Seal Installer
    • J 43773 Valve Spring Compressor
    • J 24459-5 Spring Compressor Adapter

    Object Number: 1207861  Size: SH
  1. Position the oil pump cover assembly (1) so that the rear of the assembly is facing down.
  2. Install the torque converter clutch (TCC) valve (2).
  3. Install the TCC valve spring (3) and stop (4).

  4. Object Number: 1207848  Size: SH
  5. Install J 24459-5  (1) onto J 43770  (2).

  6. Object Number: 1207809  Size: SH
  7. Align J 43770  (5) and J 24459-5  (4) with the oil pump cover so that the following conditions are met:
  8. • The threaded rod is facing down.
    • Two bolt holes align with 2 bolt holes in the oil pump cover.
  9. Install J 43770  (5) onto the oil pump cover assembly (1).
  10. Install 2 oil pump cover retaining bolts (2).
  11. Align the slot in J 24459-5  (4) to allow installing retainer pin (3).
  12. Using J 24459-5  (4) and J 43770  (5), compress the TCC valve spring until retainer pin (3) can be installed.
  13. Install the pin through the oil pump cover (1). Make sure the pin is below the oil pump cover surface.
  14. Relieve the TCC valve spring tension.
  15. Remove the J tools.

  16. Object Number: 1208086  Size: SH
  17. Install the TCC relief valve (1) and spring (2).

  18. Object Number: 1208090  Size: SH
  19. Using J 43773  (2), compress the TCC relief valve spring until the retaining clip (1) can be installed.
  20. Install the clip. Make sure the retaining clip is below the surface of the oil pump cover.

  21. Object Number: 1208097  Size: SH
  22. Install the oil pump lube regulator valve (1).
  23. Install the oil pump oil pump lube regulator valve spring (2).
  24. For some models, install the O-ring (3) onto the oil pump lube regulator stop (4).
  25. Install the oil pump lube regulator valve stop (4) .

  26. Object Number: 1216828  Size: SH
  27. Align the slot of J 24459-5  (2) with retainer pin (1) hole.
  28. Using J 24459-5  (2), compress the oil pump lube regulator valve spring until the retainer pin (1) can be installed.
  29. Install the retainer pin (1). Make sure the pin is below the surface of the oil pump cover.

  30. Object Number: 1208084  Size: SH
  31. Install the 1-2-3-4 clutch backfill valve (1).
  32. Install the 1-2-3-4 clutch backfill valve spring (2).

  33. Object Number: 1208081  Size: SH
  34. Using J 43773  (2), compress the 1-2-3-4 clutch backfill valve spring until the retaining clip (1) can be installed.
  35. Install the retaining clip (1). Make sure the retaining clip is below the surface of the oil pump cover.

  36. Object Number: 1208078  Size: SH
  37. Install the pressure regulator valve (1).
  38. Install the pressure regulator valve spring (2) and stop (3).

  39. Object Number: 1207848  Size: SH
  40. Install J 24459-5  (1) onto J 43770  (2).

  41. Object Number: 1208070  Size: SH
  42. Install J 43770  (5) onto the oil pump cover assembly.
  43. Install 2 bolts (2).
  44. Align J 24459-5  (4) slot with the retainer pin (3).
  45. Using J 43770 and J 24459-5 , compress the pressure regulator valve spring until the stop is past the pin hole.
  46. Install the retainer pin (3). Make sure the pin is below the surface of the oil pump cover.
  47. Relieve the pressure regulator valve spring tension.
  48. Remove J 24459-5 and J 43770 .

Torque Converter Housing/Oil Pump Cover Assembly


    Object Number: 1207567  Size: SH
  1. Position oil pump assembly (2) on the work table so that the rear of the pump is facing up.
  2. Align the locating pin holes in the separator plate (1) with the locating pins (3) in the pump body.
  3. Make sure the bolt holes in separator plate (1) align with the bolt holes in the oil pump body (2).
  4. Install the separator plate (1) onto the oil pump assembly (2).

  5. Object Number: 1207584  Size: SH
  6. Position the oil pump cover assembly (5) on the work table so that the stator shaft (4) is facing up.
  7. Align, as a unit, the oil pump assembly (1) and the separator plate (3) so that:
  8. •  Oil pump locating pins (2) align with their holes in the oil pump cover assembly.
    • The oil pump assembly bolt holes align with the bolt holes of the oil pump cover assembly.
  9. Install, as a unit, the oil pump assembly (1) and the separator plate (2) onto the oil pump cover assembly (5).
  10. Install five bolts (6)
  11. Tighten
    Tighten the bolts to 27 N·m (20 lb ft)


    Object Number: 1207713  Size: SH
  12. Align the tangs of the thrust washer (5) with the slots at the base of the oil pump cover assembly rear hub.
  13. Install the thrust washer (5) onto the oil pump cover assembly. The thrust washer snaps into place.
  14. Install three new overlap seal rings (6) onto the oil pump cover assembly rear hub.
  15. Install a new overlap seal ring (2) onto the middle of the stator shaft (3).
  16. Install a new overlap seal ring (1) onto the front of the stator shaft (3).

  17. Object Number: 1332674  Size: SH
  18. Position oil pump cover module (5) on the work table so that the stator shaft is facing up.
  19. Align the bolt holes of the converter housing/separator plate gasket (2) with the bolt holes in the separator plate (4).
  20. Apply Transjel® or an equivalent lubricant to the gasket face nearest the separator plate.
  21. Install the gasket onto the separator plate.
  22. Apply Transjel® or an equivalent lubricant onto the outside diameter (OD) of the oil pump assembly (3).

  23. Object Number: 1235367  Size: SH
  24. Install two M10 x 1.5 guide bolts (2) into the oil pump cover module (3).
  25. Align the converter housing bolt holes with the bolt holes in the oil pump cover module.
  26. Install the converter housing onto the guide bolts and onto the oil pump cover module.
  27. Remove the guide bolts from the oil pump cover module.

  28. Object Number: 1207880  Size: SH
  29. Inspect bolt seals (2) for nicks or other damage. Replace damaged seals.
  30. Install seals (2) onto ten bolts (1).

  31. Object Number: 1207885  Size: SH
  32. Install ten bolts (1) into the converter housing to retain the oil pump cover module.
  33. Tighten
    In a criss-cross pattern, tighten the bolts to 56 N·m (42 lb ft).


    Object Number: 1235611  Size: SH
  34. Align oil seal assembly (2) with the oil pump body so that the double edges face the pump body hub.
  35. Using J 43772 , install the oil seal assembly into the pump body hub.
  36. Seal Specification
    Make sure the seal is installed flush to 0.25 mm (0.010 in) below the oil pump body surface.