GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Caution: Before servicing any electrical component, the ignition and start switch must be in the OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures. If a tool or equipment could easily come in contact with a live exposed electrical terminal, also disconnect the negative battery cable. Failure to follow these precautions may cause personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable from the battery.
  2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Drain the crankcase.

  4. Object Number: 173182  Size: SH
  5. Remove the oil pan from the engine block. Refer to Oil Pan Replacement .

  6. Object Number: 173183  Size: SH
  7. Remove the bolt that attaches the oil pump to the rear crankshaft bearing cap.
  8. Remove the following components:
  9. • The oil pump
    • The driveshaft
    • The retainer
  10. Separate the following components:
  11. • The oil pump
    • The driveshaft
    • The retainer
  12. Discard the driveshaft retainer.

Installation Procedure

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


    Object Number: 180863  Size: SH
  1. Inspect for properly installed oil pump locating pins.

  2. Object Number: 173183  Size: SH
  3. Assemble the following components:
  4. • The oil pump
    • The driveshaft
    • A new retainer

    Object Number: 173183  Size: SH
  5. Install the oil pump to the engine block.
  6. 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.

  7. Install the bolt attaching the oil pump to the rear crankshaft bearing cap.
  8. Tighten
    Tighten the bolt to 88 N·m (65 lb ft).


    Object Number: 173182  Size: SH
  9. Install the oil pan to the engine block. Refer to Oil Pan Replacement .
  10. Lower the vehicle.
  11. Fill the crankcase with engine oil. Refer to Approximate Fluid Capacities in Maintenance and Lubrication.
  12. Connect the battery negative cables.