GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2004 🢒 Park Avenue 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T65-E 🢒 Transmission Fluid Pump Assemble

    Object Number: 893334 Size: SH
  1. Inspect the oil pump for:
    2. • Worn, scored or gouged pump slide (214)
    • Cracks, wear or damage to the rotor (210) or the vanes (211)
    • Cuts or damage to the seals (212, 213, 220, 221)
    • Broken priming springs (222, 223)
    • Damaged oil pump drive shaft bearing (208) - the bearing is not serviced separately from the rotor.

    Object Number: 1774843 Size: SH
  2. Inspect the oil pump body (228) and the base (229) for:
    3. • Porosity
    • A worn, scored or damaged pump pocket
    • Interconnected oil passages
    • Damaged machined surfaces
  3. Inspect the pump outlet screen assembly (219) some models, for damage or debris.
  4. Inspect the oil pump cover (201) for cracks, wear or gouges from the pump vanes.

    5. Object Number: 1774844 Size: SH
  5. Insert the pump outlet screen assembly (219) some models, into the pump base (229).
  6. Install the pump pivot pin (228).
  7. Install the pump body (227) onto the pump base (229).
  8. Install the pivot slide pin (215).
  9. Insert the pump slide seal (221) and the pump slide seal (220) into the pump slide (214).
  10. Insert the pump slide (214) and the slide pivot pin (215) into the pump body (227).
  11. Install the outer and inner priming springs (222, 223) as an assembly into the pump body (227).
  12. Install the first vane ring into the pump body (227).
  13. Insert the pump slide O-ring seal (213) and pump slide seal ring (212) into the pump slide (214).
  14. Insert the rotor (210) into the pump body (227).
  15. Install the pump vanes (211) into the rotor (210). The pump vane must be flush with the top of the rotor.
  16. Install the second vane ring (209) onto the top of the rotor (210).

    17. Object Number: 893338 Size: SH
  17. Install the oil pump assembly (200) onto the control valve assembly (300).

    18. 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.

  18. Install the two pump body to case bolts (230) and the nine pump cover to case cover bolts (231).

    19. Tighten
    Tighten the bolts to 12 N·m (106 lb in).