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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 907 (Engine Cooling System) >> Repair Instructions >> Engine Oil Cooler Hose/Pipe Replacement (2WD) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise and the support vehicle. Refer to JACKING AND LIFTING in General Information.
  2. Remove the engine oil cooler lines support clamp bolt.
    Fig 1: Removing Engine Oil Cooler Hose/Pipe
    G01978136Courtesy of GENERAL MOTORS CORP.

    Important:  Have a drain pan ready for the engine oil to drain into.

  3. Remove the bolt attaching the engine oil cooler lines to the oil filter adapter.
  4. Hold the cooler lines below the bottom of the radiator to drain the engine oil.
  5. Remove the discard the seals.
    Fig 2: Removing Engine Oil Cooler Lines
    G01978137Courtesy of GENERAL MOTORS CORP.
  6. Lower the vehicle.
  7. Remove air cleaner assembly.
  8. Remove the engine oil cooler line retaining rings from the engine oil cooler line quick connectors at the radiator engine oil cooler inlet and outlet. Follow the next 2 steps for the proper retaining ring removal procedure.
  9. Using a bent-tip screwdriver or equivalent, pull on one of the open ends of the retaining ring in order to rotate the retaining ring.
  10. Rotate the retaining ring around the quick connector until the retaining ring is out of position and can be completely removed.

    Discard retaining rings.

  11. Remove the engine oil cooler lines from the quick connectors at the radiator engine oil cooler inlet and outlet.

    Pull the lines straight out from the connectors.

  12. Clean all of the components in a suitable solvent, and dry them with compressed air.
    Fig 3: Removing Engine Oil Cooler Lines
    G01978138Courtesy of GENERAL MOTORS CORP.
  13. Inspect the fittings, the connectors, the cooler lines, and the cooler for damage, distortion, or restriction. Replace parts as necessary.
  14. Flush the engine oil cooler and engine oil cooler lines with the same type of engine oil normally circulating through the engine.
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