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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 232 (Engine Cooling System) >> Repair Instructions >> Engine Oil Cooler Hose/Pipe Replacement >> 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.

  1. Disconnect the cooler lines. Refer to Engine Oil Cooler Pipe/Hose Quick Connect Fitting .
  2. If equipped with a 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. Gently, pull the oil cooler pipe fittings straight out from the radiator quick connect fittings.
    4. Raise and suitably support the vehicle.
      Fig 1: Removing Oil Cooler Pipe Fittings (6.0L)
      G02079135Courtesy of GENERAL MOTORS CORP.
  3. If equipped with a 8.1L engine, perform the following:
    1. Remove the oil cooler hoses from the clip.
    2. Gently, pull the oil cooler pipe fittings straight out from the radiator quick connect fittings.
    3. Raise and suitably support the vehicle.
      Fig 2: Removing Oil Cooler Pipe Fittings (8.1L)
      G02079136Courtesy of GENERAL MOTORS CORP.
  4. If equipped, remove the engine shield bolts.
  5. Remove the engine shield.
    Fig 3: Removing Engine Shield Bolts & Shield
    G02079137Courtesy of GENERAL MOTORS CORP.
  6. If equipped with the a 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.
      Fig 4: Removing Bolts, Oil Cooler Hose Assembly & Gasket (6.0L)
      G02079138Courtesy of GENERAL MOTORS CORP.
  7. 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.
      Fig 5: Removing Bolts, Quick Connect Fittings & Oil Cooler Hose Assembly (8.1L)
      G02079139Courtesy of GENERAL MOTORS CORP.
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