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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 688 (Engine Cooling System) >> Repair Instructions >> Water Outlet Tube Replacement (6.6L Engine) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Loosen the outlet duct clamp at the upper intake manifold cover.
  2. Remove the upper intake manifold cover from the outlet duct.
  3. Remove the upper intake manifold cover.
    4. Fig 1: Upper Intake Manifold Cover
    G01658042Courtesy of GENERAL MOTORS CORP.
  4. Drain the engine coolant. Refer to Draining & Filling Cooling System .
  5. Remove the radiator inlet hose from the water outlet tube.
    Fig 2: Radiator Inlet Hose From Water Outlet Tube
    G01658043Courtesy of GENERAL MOTORS CORP.
  6. Remove the bolt and wiring harness bracket at the thermostat housing.
  7. Disconnect the turbocharger coolant hose from the turbocharger bypass valve.
    Fig 3: Turbocharger Coolant Hose From Turbocharger Bypass Valve
    G01658045Courtesy of GENERAL MOTORS CORP.
  8. Remove the turbocharger bypass valve and sealing washer from the water outlet tube.
    Fig 4: Turbocharger Bypass Valve
    G01658046Courtesy of GENERAL MOTORS CORP.
  9. Remove the 2 bolts retaining the water outlet tube to the left valve rocker arm cover.
  10. Remove the bolt retaining the water outlet tube to the thermostat housing.
  11. Remove the water outlet tube.
    12. Fig 5: Water Outlet Tube
    G01658047Courtesy of GENERAL MOTORS CORP.
  12. Remove and discard the O-ring seal.
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