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noise from under hood

Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by springtb, May 16, 2013.

  1. springtb

    springtb New Member

    my belt is squeaking and the water pump pulley has some vibration. 2000 chevy 1500. my question is would replacing the pulley be a fix or would i need to replace the whole water pump
  2. Pikey

    Pikey Moderator Staff Member ROTM Winner 1000 Posts

    Chances are that the vibration is due to a bad bearing in the pump not a bad pulley. I don't know that I have ever seen a water pump pulley go bad.
  3. springtb

    springtb New Member

    yea after some reading that what i came up with. so now the water pump needs replacing
  4. j cat

    j cat Active Member 1000 Posts


    remove the belt and check all pulley bearings , also before going to buy the parts .
  5. K15 Blazer Guy

    K15 Blazer Guy New Member

    noise under hood= awesome american V8

    .... if you can wiggle the fan, the whater pump is shot. sounds like it is.
  6. springtb

    springtb New Member

    Sorry for never updating on the post. turns out that is was the water pump because it went out that afternoon a block from the house. Replaced it that night now it runs like a champ!!!!!!

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