GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 LaCrosse 🢒 Engine 🢒 Engine Mechanical - 3.8L 🢒 Oil Pump Suction Pipe and Screen Assembly Replacement

Removal Procedure

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

Installation Procedure

    Object Number: 153599 Size: SH

    Note: The oil pan gasket must be installed before the oil pump pipe and screen assembly.

  1. Install the new oil pump pipe and screen gasket.
  2. Install the oil pan gasket.
  3. Install the oil pump pipe and screen.

    4. Caution: Refer to Fastener Caution in the Preface section.

  4. Install the oil pump screen bolts.

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

  5. Install the oil pan. Refer to Oil Pan Replacement.

    6. Caution: Do not run the engine until the oil pressure is tested. Running the engine without measurable oil pressure will cause extensive damage.

    Caution: 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.

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