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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1537 (Engine Mechanical (Repair Instructions 1 Of 3) - 5.7L) >> Repair Instructions (On-Vehicle & Off-Vehicle - Part 1 >> On-Vehicle Repair Instructions >> Oil Pan Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Oil Pan Drain Plug
    GM74223Courtesy of GENERAL MOTORS CORP.
  1. Remove the front suspension crossmember. Refer to Crossmember Replacement - Front Suspension in Front Suspension.
  2. Remove the oil pan drain plug and allow the oil to drain.
  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. Fig 2: Lower Oil Pan Bolt (1-15)
    GM414783Courtesy of GENERAL MOTORS CORP.
  5. If replacement of the oil pan (lower) gasket is needed, perform the following:
  6. Remove the oil pan (lower) bolt (1-15).
    7. Fig 3: Lower Oil Pan, Gasket, Oil Pan & Bolts
    GM414785Courtesy 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.

    10. Fig 4: View Of Left Closeout Cover & Bolt
    GM178477Courtesy of GENERAL MOTORS CORP.
  10. Remove the starter motor. Refer to Starter Motor Replacement in Engine Electrical.
  11. Remove the left transmission cover bolt and cover.
    12. Fig 5: Engine Oil Filter
    GM63221Courtesy of GENERAL MOTORS CORP.
  12. Remove the engine oil filter and allow the oil to drain.
  13. Re-install the engine oil filter until snug.
    14. Fig 6: Automatic Transmission Fluid Cooler Line Clamp & Bolt
    GM71418Courtesy of GENERAL MOTORS CORP.
  14. Remove the automatic transmission fluid cooler line clamp bolt at the right transmission cover, if equipped.
    15. Fig 7: Automatic Transmission Fluid Cooler Line & Oil Pan
    GM651883Courtesy of GENERAL MOTORS CORP.
  15. Remove the automatic transmission fluid cooler line clamp bolt at the oil pan, if equipped.
    16. Fig 8: Right Transmission Cover & Bolt
    GM178480Courtesy of GENERAL MOTORS CORP.
  16. Remove the right transmission cover bolt and cover.
    17. Fig 9: Bottom Flywheel Housing-To-Oil Pan & Bolts
    GM651884Courtesy of GENERAL MOTORS CORP.
  17. Remove the bottom 2 flywheel housing-to-oil pan bolts.
    18. Fig 10: Engine Oil Level Sensor Electrical Connector & CKP Sensor Electrical Connector
    GM651885Courtesy of GENERAL MOTORS CORP.
  18. Disconnect the engine oil level sensor electrical connector (2).
    19. Fig 11: Engine Oil Temperature Sensor Electrical Connector & Ground Straps
    GM651886Courtesy of GENERAL MOTORS CORP.
  19. Disconnect the engine oil temperature sensor (3) electrical connector.
    20. Fig 12: Oil Pan Gasket & Engine Block
    GM702060Courtesy 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.
  20. Remove the oil pan bolts.
  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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