GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2003 🢒 Century 🢒 Engine 🢒 Engine Mechanical - 3.1L 🢒 Oil Pump Drive Replacement

Removal Procedure
  1. Remove the upper intake manifold. Refer to Upper Intake Manifold Replacement .

    2. Object Number: 190512 Size: SH
  2. Remove the fuel pipe clip bolt and the clip.
  3. Remove the fuel feed and the fuel return pipes from the fuel injector rail. Refer to Fuel Injection Fuel Rail Assembly Replacement in Engine Controls - 3.1L

    4. Object Number: 190531 Size: SH
  4. Remove the oil pump drive bolt.
  5. Remove the oil pump drive clamp.
  6. Remove the oil pump drive.
  7. Remove the oil pump drive seal.

Installation Procedure

    Object Number: 190531 Size: SH
  1. Install the oil pump drive seal. Coat the seal or bore in the engine block with engine oil.
  2. Coat the drive gear on the oil pump drive with prelube GM P/N 1052367 (Canadian P/N 992869) or the equivalent.
  3. Install the oil pump drive.
  4. Install the oil pump drive clamp.

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

  5. Install the oil pump drive bolt.

    6. Tighten
    Tighten the bolt to 36 N·m (27 lb ft).


    Object Number: 190512 Size: SH
  6. Install the fuel feed and the fuel return pipes to the fuel injector rail. Refer to Fuel Injection Fuel Rail Assembly Replacement in Engine Controls - 3.1L
  7. Install the fuel pipe clip and the bolt.

    8. Tighten
    Tighten the bolt to 8 N·m (71 lb in).

  8. Install the upper intake manifold. Refer to Upper Intake Manifold Replacement .