Question about 2003 GMC Yukon XL

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2003 Yukon Idler keeps making a noise that sounds like and Impac

My Yukon idler started making this noise like an impact wrench when ever I run the air conditioner.. I had it replaced and the next day it started doing it again. I drove it for 7 months making that noise and finally the idler and belt broke. I took it to another mechanic and he replaced belt and idler and said maybe that was just a bad one. I drove my Yukon home and it was fine, the next day I went about 5 miles and it started making the same noise again. It messed up this idler. What could be messing up the idlers?

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The Vibration Damper

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