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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1443 (Engine Mechanical - 4.2L (Ll8)) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Water Pump Cleaning and Inspection

Water Pump Cleaning and Inspection

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Checking Water Pump
    GM637680Courtesy of GENERAL MOTORS CORP.
  1. Remove all sealing material from the sealing surface.
  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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