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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1188 (Engine Mechanical - 5.7L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Oil Pan Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the front suspension crossmember. Refer to FRONT SUSPENSION CROSSMEMBER REPLACEMENT in Front Suspension.
  2. Remove the oil pan drain plug and allow the oil to drain.
    Fig 1: Removing Oil Pan Drain Plug
    G01970570Courtesy of GENERAL MOTORS CORP.
  3. Re-install the engine oil drain plug until snug.

    Important:  It is not necessary to remove the oil pan (lower) in order to remove the oil pan.

  4. If oil pan and/or gasket removal or replacement is NOT required proceed to step 10.

    If the oil pan (lower) gasket replacement is required proceed to the next step.

  5. If replacement of the oil pan (lower) gasket is needed, perform the following:
  6. Remove the oil pan (lower) bolt (1-15).
    Fig 2: Locating Oil Pan (Lower) Bolts
    G01970571Courtesy of GENERAL MOTORS CORP.
  7. Separate the oil pan (lower) (3) from the oil pan (1).
  8. Remove the oil pan (lower) gasket (2).
  9. Clean the oil pan (lower) gasket surface.

    For the oil pan (lower) installation, refer to step 13 in the installation procedure.

    Fig 3: Separating Oil Pan (Lower) From Oil Pan
    G01970572Courtesy of GENERAL MOTORS CORP.
  10. Remove the starter motor. Refer to STARTER MOTOR in Engine Electrical.
  11. Remove the left transmission cover bolt and cover.
    Fig 4: Removing Left Transmission Cover Bolt And Cover
    G01970573Courtesy of GENERAL MOTORS CORP.
  12. Remove the engine oil filter and allow the oil to drain.
    Fig 5: Removing Engine Oil Filter
    G01970574Courtesy of GENERAL MOTORS CORP.
  13. Re-install the engine oil filter until snug.
  14. Remove the automatic transmission fluid cooler line clamp bolt at the right transmission cover, if equipped.
    Fig 6: Removing Automatic Transmission Fluid Cooler Line Clamp Bolt At Right Transmission Cover
    G01970575Courtesy of GENERAL MOTORS CORP.
  15. Remove the automatic transmission fluid cooler line clamp bolt at the oil pan, if equipped.
    Fig 7: Removing Automatic Transmission Fluid Cooler Line Clamp Bolt At Oil Pan
    G01970576Courtesy of GENERAL MOTORS CORP.
  16. Remove the right transmission cover bolt and cover.
    Fig 8: Removing Right Transmission Cover
    G01970577Courtesy of GENERAL MOTORS CORP.
  17. Remove the bottom 2 flywheel housing-to-oil pan bolts.
    Fig 9: Removing Bottom Flywheel Housing-To-Oil Pan Bolts
    G01970578Courtesy of GENERAL MOTORS CORP.
  18. Disconnect the engine oil level sensor electrical connector (2).
    Fig 10: Disconnecting Engine Oil Level Sensor Electrical Connector
    G01970579Courtesy of GENERAL MOTORS CORP.
  19. Disconnect the engine oil temperature sensor (3) electrical connector.
    Fig 11: Disconnecting Engine Oil Temperature Sensor Electrical Connector
    G01970580Courtesy of GENERAL MOTORS CORP.
  20. Remove the oil pan bolts.
    Fig 12: Removing Oil Pan
    G01970581Courtesy of GENERAL MOTORS CORP.

    Important:  The original oil pan gasket is retained and aligned to the oil pan by rivets. When installing a new gasket, it is not necessary to install new oil pan gasket rivets.

    DO NOT reuse the oil pan gasket. When installing the oil pan, install a NEW oil pan gasket.

    Removal of the oil pan (lower) will not provide access to the crankshaft oil deflector, crankshaft, or other internal engine components.

  21. Lower the oil pan, rotate the pan until it can be removed from around the oil pump screen.
  22. Remove the engine oil filter.
  23. Clean and inspect the engine oil pan. Refer to OIL PAN CLEANING AND INSPECTION .
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