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  1. Duramax Sixth Generation: 2017-2019 (L5P)
    Has anybody ever had this noise before? I can hear it the best under the truck. It’s a 2018 Chevy 2500. I have sprayed the belt with some PB Blaster to see if it makes a difference and no change. Thanks
  2. Duramax Sixth Generation: 2017-2019 (L5P)
    I have a 17 Crew with 44k on it , truck just started squealing. Dealer has changed belt and all moving pullys. They say it's not the fan either... They have scoped everything for the noise, they can duplicate it, but it goes away to quick. I have a video of it , not sure how to add it. Any help...
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