GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Venture Ext. 🢒 Engine 🢒 Engine Mechanical - 3.4L 🢒 Oil Pump Replacement

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

    2. Object Number: 187030 Size: SH
  2. Remove the oil pump bolt.
  3. Remove the oil pump and oil pump drive shaft.

    4. Object Number: 187031 Size: SH
  4. Remove the crankshaft oil deflector nuts.
  5. Remove the crankshaft oil deflector.
  6. Inspect the oil pump driveshaft at both ends for rounding of the corners.

Installation Procedure

    Object Number: 187031 Size: SH

    Important: Rotate the oil pump driveshaft as necessary in order to obtain the engagement with the oil pump drive.

  1. Install the crankshaft oil deflector.

    2. 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.

  2. Install the crankshaft oil deflector nuts.

    3. Tighten
    Tighten the nuts to 25 N·m (18 lb ft).


    Object Number: 187030 Size: SH
  3. Install the oil pump and oil pump drive shaft.
  4. Install the oil pump bolt.

    5. Tighten
    Tighten the bolt to 41 N·m (30 lb ft).

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