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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1023 (Engine Mechanical - 6.6L (Lb7) (Repair Instructions 1 Of 4)) >> Repair Instructions (On-Vehicle & Off Vehicle - Part 1) >> On-Vehicle Repair Instructions >> Oil Pan Replacement - Lower >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Place a suitable container under the engine in order to drain the oil.
  3. Remove the oil drain plug.
    4. Fig 1: View Of Engine Oil Drain Plug
    GM660296Courtesy of GENERAL MOTORS CORP.
  4. Drain the engine oil.
  5. Remove the oil pan skid plate bolts and plate.
    6. Fig 2: Identifying Oil Pan Skid Plate
    GM309158Courtesy of GENERAL MOTORS CORP.
  6. Remove the crossmember bolts and crossmember, 2-wheel drive (2WD) vehicle shown.
    7. Fig 3: View Of Crossbar Bolts & Bar (2WD)
    GM328107Courtesy of GENERAL MOTORS CORP.
  7. Remove the crossmember bolts and crossmember, 4-wheel drive (4WD) vehicle shown.
    8. Fig 4: View Of Crossmember Bolts & Bar (4WD Only)
    GM487521Courtesy of GENERAL MOTORS CORP.
  8. Disconnect the oil level sensor electrical connector.
    9. Fig 5: View Of Oil Level Sensor Electrical Connector
    GM660316Courtesy of GENERAL MOTORS CORP.
  9. Remove the lower oil pan bolts and nuts.
  10. Separate the lower oil pan from the lower crankcase.
  11. Remove the lower oil pan.
    12. Fig 6: View Of Lower Oil Pan & Bolts
    GM660319Courtesy of GENERAL MOTORS CORP.
  12. Remove the oil level sensor (1) and clip (3).
  13. Clean the lower oil pan. Remove any sludge or other deposits.
  14. Clean the lower oil pan mating surface (4).
    15. Fig 7: View Of Oil Level Sensor, Clip, Bolt & Oil Pan Mating Surface
    GM663624Courtesy of GENERAL MOTORS CORP.
  15. Inspect the lower oil pan for dents or distortion.
  16. Inspect the lower oil pan mating surface for damage.
  17. Replace the lower oil pan if any damage is found.
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