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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1619 (Engine Mechanical - 4.8L, 5.3L & 6.0L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Oil Pan Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. If equipped with four wheel drive (4WD), remove the inner axle housing nuts and washers from the bracket.
  2. Support the front drive axle with a suitable jack.
    Fig 1: Removing Inner Axle Housing Nuts & Washers
    G02106741Courtesy of GENERAL MOTORS CORP.
  3. If equipped with 4WD, remove the differential carrier lower mounting bolt and nut.
    Fig 2: Removing Differential Carrier Lower Mounting Bolt & Nut
    G02106742Courtesy of GENERAL MOTORS CORP.
  4. If equipped with 4WD, remove the differential carrier upper mounting bolt and nut.
  5. Lower the front drive axle.
    Fig 3: Removing Differential Carrier Upper Mounting Bolt & Nut
    G02106743Courtesy of GENERAL MOTORS CORP.
  6. Remove the transmission cover bolt.
    Fig 4: Removing Transmission Cover Bolt
    G02106744Courtesy of GENERAL MOTORS CORP.
  7. If equipped, remove the oil pan skid plate bolts.
  8. Remove the oil pan skid plate.
    Fig 5: Removing Oil Pan Skid Plate & Bolts
    G02106745Courtesy of GENERAL MOTORS CORP.
  9. Remove the crossbar bolts.
  10. Remove the crossbar.
    Fig 6: Removing Crossbar & Bolts
    G02106746Courtesy of GENERAL MOTORS CORP.
  11. Remove the transmission cover bolt and cover.
  12. Drain the engine oil and remove the engine oil filter.
  13. Re-install the drain plug and oil filter until snug.
    Fig 7: Removing Transmission Cover & Bolt
    G02106747Courtesy of GENERAL MOTORS CORP.
  14. If equipped with the 4L60-E automatic transmission, remove the transmission bolt and stud on the right side.
    Fig 8: Removing Transmission Bolt & Stud On Right Side
    G02106748Courtesy of GENERAL MOTORS CORP.
  15. Remove the bottom bolt on the left side.
    Fig 9: Removing Bottom Bolt On Left Side
    G02106749Courtesy of GENERAL MOTORS CORP.
  16. If equipped with the 4L80-E automatic transmission, remove the transmission converter cover bolts.
    Fig 10: Removing Transmission Converter Cover Bolts
    G02106750Courtesy of GENERAL MOTORS CORP.
  17. If equipped with a manual transmission, remove the two bottom bellhousing bolts.
    Fig 11: Removing Bottom Bellhousing Bolts
    G02106751Courtesy of GENERAL MOTORS CORP.
  18. Disconnect the oil level sensor electrical connector (6).
    Fig 12: Disconnect Oil Level Sensor Electrical Connector
    G02106752Courtesy of GENERAL MOTORS CORP.
  19. Remove the battery cable channel bolt.
  20. Slide the channel pin out of the oil pan tab.
    Fig 13: Removing Battery Cable Channel Bolt
    G02106753Courtesy of GENERAL MOTORS CORP.
  21. Remove the following from the positive battery cable clip:
    • Engine wiring harness clip
    • Positive battery cable clip
    Fig 14: Removing Engine Wiring Harness Clip & Positive Battery Cable Clip
    G02106754Courtesy of GENERAL MOTORS CORP.
  22. Remove the engine oil cooler lines from the positive battery cable clip.
  23. Remove the positive battery cable clip bolt and clip.
    Fig 15: Removing Positive Battery Cable Clip & Bolt
    G02106755Courtesy of GENERAL MOTORS CORP.
  24. Remove the oil pan bolts.
  25. Remove the oil pan.
    Fig 16: Removing Oil Pan & Bolts
    G02106756Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: DO NOT allow foreign material to enter the oil passages of the oil pan, cap or cover the openings as required.
  26. Drill (3) out the oil pan gasket retaining rivets (2), if required.
  27. Remove the gasket (1) from the pan.
  28. Discard the gasket and rivets.
  29. If required, clean and inspect the engine oil pan. Refer to Oil Pan Cleaning and Inspection .
    Fig 17: Drill, Gasket & Retaining Rivets
    G02106757Courtesy of GENERAL MOTORS CORP.
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