GM Service Manual Online
For 1990-2009 cars only

Water Pump Cleaning and Inspection 3.5L V6 LX5

Removal Procedure

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Object Number: 293990  Size: SH
  • Clean the water pump mating surface.
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  • Clean the water pump.
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  • Inspect the water pump shaft for looseness.
  •    • 
  • Inspect for a loose impeller on the water pump shaft.
  •    • 
  • Inspect for a loose hub on the water pump shaft.
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  • Inspect for coolant leakage from the water pump shaft.
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  • Inspect for coolant leakage from the water pump shaft bearing.
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  • Inspect the water pump impeller vanes for damage.
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  • Inspect the water pump impeller for corrosion.
  •    • 
  • Inspect the water pump mating surfaces for nicks.
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  • Inspect the water pump housing for corrosion.
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  • Inspect the water pump housing for porosity.
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  • Inspect for coolant leakage from the water pump weep hole.
  •    • 
  • Repair or replace the water pump as necessary.
  • Water Pump Cleaning and Inspection 3800 V6 L36

       • 
    Object Number: 187022  Size: SH
  • Clean the water pump mating surface.
  •    • 
  • Clean the water pump.
  •    • 
  • Inspect the water pump shaft for looseness.
  •    • 
  • Inspect the water pump vanes for damage.
  •    • 
  • Inspect the water pump mating surfaces for nicks.
  •    • 
  • Repair or replace the water pump as necessary.