Bad squealing.... - Chevy and GMC Duramax Diesel Forum
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Old 12-06-2012, 07:47 AM   eBay Motors  #1 (permalink)
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Bad squealing....

I hear bad squealing after I turn the truck on. 08 3500HD Sierra. Keeps on squealing loud for a few minutes, then gets quieter, but I still hear it. Belts? What to look for? New to diesel. Thanks.
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Old 12-06-2012, 08:08 AM   eBay Motors  #2 (permalink)
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I had the same problem recently. Was doing it for a few weeks, hoping it would go away. I changed the belt, and now I'm squeak free.
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Old 12-06-2012, 04:04 PM   eBay Motors  #3 (permalink)
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I'd say belt, but you can check by just putting a dab of break fluid on the inside of the belt after it has run and with the truck turned OFF, then start it again, if it calms the noise you need a new belt.
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Old 12-06-2012, 04:15 PM   eBay Motors  #4 (permalink)
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Pulleys or belt
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Old 12-06-2012, 09:44 PM   eBay Motors  #5 (permalink)
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Quote:
Originally Posted by dirtymaxxx03 View Post
I had the same problem recently. Was doing it for a few weeks, hoping it would go away. I changed the belt, and now I'm squeak free.
Xxx2
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Old 12-07-2012, 03:56 AM   eBay Motors  #6 (permalink)
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If you do replace the belt, always include a new tensioner and idler pulleys as well. They're cheap, belts aren't.
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Old 12-25-2012, 05:19 PM   eBay Motors  #7 (permalink)
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I'd say belt, but you can check by just putting a dab of break fluid on the inside of the belt after it has run and with the truck turned OFF, then start it again, if it calms the noise you need a new belt.
^^^How does this tell you you need a new belt???
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Old 12-26-2012, 12:24 AM   eBay Motors  #8 (permalink)
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^^^How does this tell you you need a new belt???
Brake fluid works as an anti slick compound and causes it to grip, so if you put that on the track lines of the belt it's going to grip, if it makes a difference is the belt, if it still maintains the noise is a pulley.
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Old 12-26-2012, 09:05 AM   eBay Motors  #9 (permalink)
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Resolution to the problem. It was a belt. Got new one on and all squealing gone.
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