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Thread: Cold Start Only LS1 Water Pump Squeak...Bad Pump?

  1. 11-06-2012 04:58 PM #1
    LS1GMCTruck
    LS1GMCTruck is offline Senior Member
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    Question Cold Start Only LS1 Water Pump Squeak...Bad Pump?

    Squeaking LS1 water pump only when cold. Its definately the water pump. Not leaking or anything else. Is this how they begin to fail?
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  2. 11-06-2012 07:12 PM #2
    CHEVROLADE
    CHEVROLADE is offline Senior Member
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    Some of them begin to squeak (worn bearings) and some leak through lil pin hole. Replace it soon , I seen some get loose with lots of shaft play lol
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