Bonneville, LeSabre, Park Avenue 2000-2005

Oil Pan

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Removal & Installation



3.8L Engine

WARNING
The oil level sensor, located in the oil pan, must be removed prior to removal of the oil pan. If the oil pan is removed first, damage to the oil level sensor may occur.

  1. Before servicing the vehicle, refer to the Precautions section.

    Click image to see an enlarged view

    Fig. If equipped, be sure to remove the oil level sensor before removing the pan

  2.  
  3. Drain oil into an approved container.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable
     
    Right engine mount bracket, if necessary
     
    Flexplate cover
     
    Oil level sensor
     
    Oil filter
     
    Torque axis mount bracket bolts, if necessary
     
    Oil pan bolts
     
    Oil pan
     
    Oil pan gasket
     

  6.  
  7. Clean the oil pan and cylinder block mating surfaces.
  8.  

To install:

  1. Install or connect the following:

    Oil pan with a new gasket and torque the bolts to 125 inch lbs. (14 Nm)
     
    Torque axis mount bracket bolts, if removed
     
    Oil filter
     
    Flexplate cover
     
    Oil level sensor
     
    Oil drain plug and torque the plug to 30 ft. lbs. (40 Nm)
     
    Right engine mount bracket, if necessary
     
    Negative battery cable
     

  2.  
  3. Refill the crankcase.
  4.  
  5. Run the engine and check for leaks.
  6.  

4.6L Engine
  1. Drain the engine oil.
  2.  
  3. Remove the front exhaust manifold pipe.
  4.  
  5. Disconnect the electrical connector from the engine oil level sensor.
  6.  
  7. Remove the engine oil level sensor  from the oil pan.
  8.  
  9. Remove the oil pan bolts.
    NOTE
    The oil pan gasket is reusable unless damaged. Do not remove the gasket from the oil pan groove unless replacement is required.

  10.  
  11. Remove the oil pan.
  12.  
  13. Clean and inspect the oil pan.
  14.  

To install:

Click image to see an enlarged view

Fig. Oil pan bolt torque sequence-4.6L engine

  1. If required, install a new oil pan seal using the following procedure:
    1. Clean any residual oil from the seal groove.
    2.  
    3. Work the seal into the pan groove in both directions around the pan.
    4.  

  2.  
  3. Position the oil pan to the crankcase. Install the oil pan retaining bolts. Tighten the oil pan bolts to 89 inch lbs. (10 Nm) in the sequence shown.
  4.  
  5. Install the engine oil level sensor into the oil pan. Tighten the engine oil level sensor to 15 ft. lbs. (20 Nm).
  6.  
  7. Connect the electrical connector to the engine oil level sensor.
  8.  
  9. Install the front exhaust manifold pipe.
  10.  
  11. Fill the engine oil.
  12.  
  13. Inspect for oil leaks after engine start up.
  14.  

 
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