GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Notice: Remove the oil level sensor, located in the oil pan, before the oil pan is removed. The sensor may be damaged if the oil pan is removed first.

  1. Remove the oil pan. Refer to Oil Pan Replacement .

  2. Object Number: 153599  Size: SH
  3. Remove the oil pump screen bolts.
  4. Remove the oil pump pipe and screen.
  5. Remove the oil pump pipe and screen gasket.
  6. Clean the screen and housing with solvent, and blow dry.
  7. Inspect the oil pump pipe and screen, replace if necessary.
  8. Clean the gasket mating surface on the pipe flange and cylinder block.

Installation Procedure


    Object Number: 153599  Size: SH
  1. Install the new oil pump pipe and screen gasket.
  2. Install the oil pump pipe and screen.
  3. 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.

  4. Install the oil pump screen bolts.
  5. Tighten
    Tighten the oil pump screen bolts to 15 N·m (11 lb ft).

  6. Install the oil pan. Refer to Oil Pan Replacement .
  7. Notice: Do not run the engine until the oil pressure is tested. Running the engine without measurable oil pressure will cause extensive damage.

    Notice: Stop the engine and remove the oil pan if the oil pressure does not build up immediately. Check the oil pump pipe and the screen for a clogged screen, damaged pipe, or a damaged gasket. Running the engine without measurable oil pressure will cause extensive damage.

  8. Inspect and verify that the oil pressure is within specifications.