2015 GMC Yukon developed weird noise

By Raydeherrera
November 23, 2019 in Troubleshooting & Recalls

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Raydeherrera

Posted November 23, 2019

Hello all i have a 2015 yukon 5.3l with about 36k miles on it. All the sudden it has developed what seems to be like a serpentine pulley squeal but it’s not coming from the pulley it’s self. Seems to be under the valve covers some where? The noise is only there between 1400-2000 rpm when cold than goes away in total after it warms up? Will try an post a video thanks

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