GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2007 🢒 Lucerne 🢒 Engine 🢒 Engine Mechanical - 3.8L 🢒 Oil Pump Cover and Gear Set Replacement

Removal Procedure

    Object Number: 153600 Size: SH
  1. Remove the engine front cover. Refer to Engine Front Cover Replacement .
  2. Remove the oil pump cover screws.
  3. Remove the oil pump cover.
  4. Remove the oil pump gear set.
  5. Clean and Inspect the oil pump. Refer to Oil Pump Cleaning and Inspection .

Installation Procedure

    Object Number: 153600 Size: SH
  1. Lubricate the oil pump gear set with petroleum jelly.
  2. Install the oil pump gear set.
  3. Pack the oil pump gears with petroleum jelly.
  4. Install the oil pump cover.

    5. Notice: Refer to Fastener Notice in the Preface section.

  5. Install the oil pump cover screws.

    6. Tighten
    Tighten the screws to 11 N·m (98 lb in).

  6. Install the engine front cover. Refer to Engine Front Cover 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.

  7. Inspect the oil pressure.
  8. Inspect for leaks.