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New Engine Belt Is Chirping

Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by McClintoc, Feb 17, 2014.

  1. McClintoc

    McClintoc ɹoʇɐɹǝpoɯ Staff Member 2 Years 1000 Posts Platinum Contributor

    This past September (about 6 months ago) I replaced my serpentine belt and tensioner. My OE belt was 13 years old and never made a sound. The past couple of weeks my new belt has chirping. It's not super loud but it is noticeable and it seems to be constant. Again, the belt and tensioner both are brand new. What could be causing this chirping? It's quite annoying and I don't like my truck making noises it shouldn't be, especially from brand new parts...:no:
  2. BurbanMan

    BurbanMan Member 1 Year 500 Posts

    What brand? I know with v-belts the new parts would chirp a little until broke in, but I'm not positive that still holds true to the serpentine belts. That's obviously not the case here though. After 6mo that belt better be broke in rofl. It's especially common with the value line at the parts house. My best guess is that you ended up with a defective part. Have you checked to see if the tensioner is bouncing?
    Last edited: Feb 17, 2014
  3. j cat

    j cat Rockstar 4 Years 1000 Posts

    put the old belt on ..
  4. RayVoy

    RayVoy Well-Known Member 2 Years 1000 Posts

    Clint, my suggestion as well. Then you can narrow it down to the belt, or some other part. Usually, it is the belt that makes chirping sounds, I think it must be a slip and it acts like a tire chirping when it gets too much gas.
  5. McClintoc

    McClintoc ɹoʇɐɹǝpoɯ Staff Member 2 Years 1000 Posts Platinum Contributor

    The belt is made by Dayco and I got it from Autozone.

    I can't put the old belt back on...it's in File 13 somewhere.
  6. PLATOKIDD

    PLATOKIDD New Member

    Had the same problem with dayco , got a gates and its problem solved for me.
    :yes:
    Last edited: Feb 17, 2014
  7. BurbanMan

    BurbanMan Member 1 Year 500 Posts

    Problem #1- dayco

    problem #2- dayco

    Take that darn thing back and throw it at them for no longer carrying gatorback. Then go to napa or oreillys and get a belt.
  8. McClintoc

    McClintoc ɹoʇɐɹǝpoɯ Staff Member 2 Years 1000 Posts Platinum Contributor

    Dayco was not the cheapest belt available. I thought I did OK going with it. Guess not. :(
  9. BurbanMan

    BurbanMan Member 1 Year 500 Posts

    sold them at pep boys and had nothing, but complaints from people. They definitely aren't cheap either. Really ticked me of because people were forking over $30+ for a flat, black turd that didn't come with Lube unless you purchased that at the same time for additional cost lol
  10. edsmagichands

    edsmagichands Member 1 Year 100 Posts

    Iv'e seen this before, recently on a 4.3L. aftermarket belt, no matter what brand,was slightly longer than GM belt. couldn't tell by looking but belt #s confirmed it. parts stores swear it was the correct belt. after numerous belts, and much frustration, put GM belt and no more squeaks. have also seen aftermarket tensioner with less travel than the factories compounding the problem. also, not very likely , but there have been some cases of the P/S pulley walking a hair and causing a belt chirp.

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