GM Service Manual Online
For 1990-2009 cars only

Assembly Procedure

Tools Required

J 21882 Oil Suction Pipe Installer

    Important: Replace the pressure relief valve spring when you reuse the oil pump.


    Object Number: 30401  Size: SH
  1. Install the following items:
  2. • The pressure regulator valve
    • The pressure regulator spring
    • The retaining pin

    Object Number: 5278  Size: SH
  3. Coat the drive gear, the driven gear and the housing gear surfaces with clean engine oil.
  4. Install the drive gear and the driven gear into the pump body. Align the matchmarks on the gears. Install the smooth side of the gear toward the pump cover.

  5. Object Number: 5277  Size: SH
  6. Install the pump cover.

  7. Object Number: 5276  Size: SH
  8. Install the cover bolts.
  9. Tighten
    Tighten the bolts to 9 N·m (80 lb in).

  10. Inspect the pump for smoothness of operation by turning the oil pump driveshaft by hand.
  11. Install the oil pump screen.
  12. 7.1. If removed, replace the oil pump screen. The oil pump screen must have a good press fit into the oil pump body.
    7.2. Mount the oil pump in a soft jawed vise.
    7.3. Apply sealer to the end of the pipe.
    7.4. Use the J 21882 and a soft-faced hammer in order to tap the oil pump screen into the pump body. The screen must align parallel with the bottom of the oil pan when it is installed.

    Object Number: 5274  Size: SH
  13. Install the shaft and the retainer.