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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 144 (Engine Mechanical - 4.3L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Oil Pan Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnect/Connect Procedure .
  2. Raise the vehicle.
  3. Remove the oil pan drain plug and drain the engine oil into a suitable container.
  4. Remove the oil filter.
  5. Remove the oil filter adapter. Refer to Oil Filter Adapter Replacement .
  6. If equipped with AWD, remove the front differential carrier. Refer to DIFFERENTIAL CARRIER ASSEMBLY REPLACEMENT .
    Fig 1: Removing Oil Pan Drain Plug
    G02077877Courtesy of GENERAL MOTORS CORP.
  7. Remove the bolt holding the bracket for the starter wire and the transmission cooler pipes.
  8. Remove the crankcase position (CKP) sensor wiring harness from the retainer.
  9. Remove the starter. Refer to STARTER MOTOR REPLACEMENT (4.3L) or STARTER MOTOR REPLACEMENT (4.8L, 5.3L & 6.0L) .
    Fig 2: Removing Starter Wire & Transmission Cooler Pipes Bracket Bolt
    G02077878Courtesy of GENERAL MOTORS CORP.
  10. Remove the transmission cover.
    Fig 3: Removing Transmission Cover
    G02077879Courtesy of GENERAL MOTORS CORP.
  11. Remove the access plugs for the oil pan rear nuts.
    Fig 4: Removing Access Plugs For Oil Pan Rear Nuts
    G02077880Courtesy of GENERAL MOTORS CORP.
  12. Remove the transmission to oil pan bolts.
    Fig 5: Removing Transmission To Oil Pan Bolts
    G02077881Courtesy of GENERAL MOTORS CORP.

    Important:  The low oil level sensor is not reusable. Use a NEW low oil level sensor.

  13. Remove and discard the engine oil level sensor, if applicable.
    Fig 6: Removing Engine Oil Level Sensor
    G02077882Courtesy of GENERAL MOTORS CORP.
  14. Remove the oil pan bolts and nuts.
    Fig 7: Removing Oil Pan Bolts & Nuts
    G02077883Courtesy of GENERAL MOTORS CORP.
  15. Remove the oil pan.
    Fig 8: Removing Oil Pan
    G02077884Courtesy of GENERAL MOTORS CORP.
  16. Remove the oil pan gasket.
  17. Discard the oil pan gasket.
  18. Clean all sealing surfaces on the engine and the oil pan. Refer to Oil Pan Cleaning and Inspection .
    Fig 9: Removing Oil Pan Gasket
    G02077885Courtesy of GENERAL MOTORS CORP.
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