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Why does the serpentine belt on a 1994 GMC Conversion van make noise?

April 26, 2017BELT conversion GMC noise serpentine Van

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Why does the serpentine belt on a 1994 GMC Conversion van make noise?

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It could be the belt or pulley bearing but also could be a pulley that is not level to the belt. The belt tensioner/pully could be out of angle by a few degrees or as in a lot of dodge caravans the main braket assembly/plate that holds the tensioner/pulley is warped and results in the entire tensioner to bolt on with a few degress more slant/level than proper and thus thus belt is always climbing/traveling or moving back and forth on the non grooved/flat/ portion support pullies…. usually being the tensioner pully which results in the squeeking noise..