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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1219 (Engine Mechanical - 4.2L 6-Cylinder (Unit Repair)) >> Repair Instructions >> Water Pump Cleaning and Inspection

Water Pump Cleaning and Inspection

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove all sealing material from the sealing surface.
    2. Fig 1: Water Pump Cleaning And Inspection
    G01706579Courtesy of GENERAL MOTORS CORP.
  2. Inspect the water pump impeller for damage.
  3. Inspect the water pump shaft for looseness.
  4. Inspect the threads for damage.
  5. Replace the water pump if necessary.
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