GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Chevy P12 Chassis 🢒 Engine 🢒 Engine Cooling 🢒 Oil Pan Replacement

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. Remove the oil level indicator and tube from the engine. Refer to Oil Level Indicator and Tube Replacement .
  3. Raise the vehicle and support with safety stands. Refer to Lifting and Jacking the Vehicle in General Information.
  4. Drain the crankcase. Refer to Draining Fluids and Oil Filter Removal .

    5. Object Number: 173182 Size: SH
  5. Remove the oil pan bolts from the engine block.

    6. Object Number: 173179 Size: SH
  6. Remove the oil pan from the vehicle.
  7. Remove the oil pan gasket from the engine block.
  8. Note the gasket condition. It may be reusuable.
  9. Clean the sealing surfaces. Refer to Engine Block Cleaning and Inspection .

Installation Procedure

    Object Number: 173179 Size: SH

    Important: The oil pan gasket is reusable. Only replace the gasket if it is damaged.

  1. Install the oil pan gasket on the oil pan.
  2. Install the oil pan gasket and oil pan to the engine block.

    3. Object Number: 173182 Size: SH

    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 pan bolts to the engine block.

    4. Tighten
    Tighten the bolts to 25 N·m (18 lb ft).

  4. Remove the safety stands and lower the vehicle.
  5. Install the oil level indicator and tube. Refer to Oil Level Indicator and Tube Replacement .
  6. Fill the crankcase with new engine oil. Refer to Draining Fluids and Oil Filter Removal .

    7. 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.