GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.
  2. Drain the crankcase. Refer toDraining Fluids and Oil Filter Removal .
  3. Remove the oil pan from the engine block. Refer to Oil Pan Replacement .
  4. Remove the oil pump retaining bolts from the oil pump.

  5. Object Number: 173183  Size: SH
  6. Remove the oil pump assembly from the engine block.

Installation Procedure


    Object Number: 173183  Size: SH

    Important: When installing the oil pump, always replace the retainer between the oil pump and the shaft.

  1. Install the oil pump to the engine block.
  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. Install the oil pump mounting bolts.
  4. Tighten
    Tighten the bolts to 88 N·m (65 lb ft).

  5. Install the oil pan to the engine block. Refer to Oil Pan Replacement .
  6. Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  7. Connect the negative battery cable.