GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the timing chain. Refer to Timing Chain and Sprocket Replacement .

  2. Object Number: 236047  Size: SH
  3. Remove the five oil pump bolts.
  4. Remove the oil pump.
  5. Remove the oil pump gasket.

Installation Procedure


    Object Number: 236064  Size: SH

    Important: Engage the ridges of the oil pump drive rotor with the flat sections of the crankshaft.

  1. Install the oil pump. Use a new oil pump gasket.
  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.

  3. Use the five oil pump bolts in order to secure the oil pump.
  4. Tighten
    Tighten the oil pump bolts to 11 N·m (97 lb in).

  5. Install the timing chain. Refer to Timing Chain and Sprocket Replacement .