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Whining noise

Discussion in 'Chevy Trucks' started by dlcs, Mar 29, 2006.

  1. dlcs

    dlcs 2000 Club Member
    Messages: 2,160

    Will a serpentine belt make a whining noise while driving at say 30-50 mph? My 99 Silverado with a 6.0 does this sometimes at about 35mph. I've been told that bad serpentine belts only whine at idle when there is no load on the engine. I hate to buy a new belt and not be the problem, actually the belt looks good.
  2. dirt digger

    dirt digger Senior Member
    Messages: 619

    seeming as this is happening in the winter i doubt your AC is on...but my serpentine belt whined at highway speeds when my AC was on, changed the belt, solved the problem