GM Service Manual Online
For 1990-2009 cars only
  1. Lubricate the following with clean engine oil.
  2. • The oil pump inner gear
    • The oil pump outer gear
    • The inside surface of the oil pump body
  3. Install the oil pump outer and inner gears to the oil pump body.
  4. Notice: Fill oil pump cavities with petroleum jelly prior to installation. This will ensure that there is oil pressure immediately on start-up and will prevent engine damage.

  5. Fill the oil pump with petroleum jelly to prime the oil pump.

  6. Object Number: 648663  Size: MH

    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.

  7. Install the relief valve (3), the spring (2) and the retainer (1).
  8. Tighten
    Tighten the retainer to 29 N·m (21 lb ft).

  9. Install the oil pump cover to the oil pump body. Secure the cover with 5 bolts.
  10. Tighten
    Tighten the bolts to 12 N·m (9 lb ft).