GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1997 🢒 Savana 🢒 Engine 🢒 Engine Mechanical - 7.4L 🢒 Oil Pan Replacement

Removal Procedure
  1. Remove the negative battery cable. Refer to

    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.

    in General Information.
  2. Remove the oil level indicator and the tube.
  3. Raise and suitably support the vehicle. Refer to General Information.
  4. Drain the crankcase. Refer to General Information.
  5. Remove the exhaust crossover pipe. Refer to Exhaust Crossover Pipe Replacement in Engine Exhaust.
  6. Remove the flywheel/torque converter inspection cover.
  7. Remove the oil filter.
  8. Remove the transmission oil cooler line retainer from the bracket.

    9. Object Number: 64546 Size: SH
  9. Remove the oil pan bolts.
  10. Remove the oil pan and the gasket.
  11. Clean the gasket surfaces on the engine and the oil pan.
  12. Inspect the oil pan gasket for damage. Replace if necessary.

Installation Procedure
  1. Apply the RTV sealer GM P/N 12345739 or equivalent to the front cover to block joint and to the crankshaft rear seal to block joint. Apply the sealant for about 25 mm (1 in) in both directions from each of the four corners.

    2. Object Number: 64546 Size: SH
  2. Install the oil pan gasket to the oil pan.
  3. Install the oil pan to the engine.
  4. Install the oil pan bolts.

    5. Tighten
    Tighten the oil pan bolts to 25N·m  (18 lb ft).

    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.

  5. Install the oil filter.
  6. Install the transmission oil cooler line retainer to the bracket.
  7. Install the flywheel/torque converter inspection shield.
  8. Install the exhaust crossover pipe. Refer to Exhaust Crossover Pipe Replacement in Engine Exhaust.
  9. Lower the vehicle.
  10. Install the oil level indicator and the tube.

    11. Tighten
    Tighten the bolt to 54N·m  (40 lb ft).

  11. Connect the negative battery cable.
  12. Refill the crankcase with the proper quantity and grade of engine oil. Refer to General Information.