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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 674 (Engine Cooling System) >> Repair Instructions >> Engine Oil Cooler Hose/Pipe Replacement (4WD) >> Removal Procedure

Removal Procedure

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The optional oil cooler is either an integral part of the radiator or a separate unit placed in front of the radiator. The cooler lines and hoses are serviceable.

    Fig 1: View Of Engine Oil Cooler Quick Connect Fittings
    GM367011Courtesy of GENERAL MOTORS CORP.
  1. Disconnect the engine oil cooler quick connect fittings. Refer to Engine Oil Cooler Pipe/Hose Quick Connect Fitting .
  2. If equipped with a 5.3L or 6.0L engine, perform the following:
    1. Open the oil cooler hose clip located on the lower fan shroud.
    2. Remove the oil cooler hoses from the clip.
    3. Fig 2: View Of Oil Cooler Hoses
    GM721990Courtesy of GENERAL MOTORS CORP.
  3. If equipped with a 8.1L engine, remove the oil cooler hoses from the clip.
  4. Raise and suitably support the vehicle. Refer to LIFTING & JACKING THE VEHICLE .
  5. Place jack or utility stands at the rear of the vehicle.
  6. If equipped, remove the engine protection shield. Refer to ENGINE PROTECTION SHIELD REPLACEMENT .
  7. If equipped, remove the front differential carrier shield. Refer to SHIELD REPLACEMENT .
    8. Fig 3: View Of Inner Axle Housing Nuts
    GM834241Courtesy of GENERAL MOTORS CORP.
  8. Place an adjustable jack under the front differential carrier.
  9. Remove the inner axle housing nuts and washers from the bracket.
    10. Fig 4: View Of Differential Carrier Upper Mounting Bolt
    GM834276Courtesy of GENERAL MOTORS CORP.
  10. Remove the differential carrier upper mounting bolt and nut.
  11. Pivot the differential carrier forward and down on the lower mount bolt while it is being supported by the adjustable jack.
  12. Secure the differential carrier to the jack.
    13. Fig 5: View Of Differential Carrier Lower Mounting Bolt
    GM834278Courtesy of GENERAL MOTORS CORP.
  13. Remove the differential carrier lower mounting bolt and nut.
  14. Lower the jack 4 to 6 inches.
    15. Fig 6: View Of Oil Cooler Hose Bracket Bolt & Adapter Bolts
    GM688324Courtesy of GENERAL MOTORS CORP.
  15. If equipped with a 5.3L or 6.0L engine, perform the following:
    1. Remove the oil cooler hose bracket bolt (1).
    2. Remove the oil cooler hose adapter bolts (2).
    3. Remove the oil cooler hose assembly and gasket. Discard the gasket.
    4. Inspect the fittings, connectors and cooler hoses for damage or distortion.
    16. Fig 7: Identifying Quick Connect Fittings
    GM721991Courtesy of GENERAL MOTORS CORP.
  16. If equipped with a 8.1L engine, perform the following:
    1. Remove the oil cooler hose bracket bolt.
    2. Disconnect the quick connect fittings (1) at the engine.
    3. Remove the oil cooler hose assembly. Discard the gasket.
    4. Inspect the fittings, connectors and cooler hoses for damage or distortion.
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