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Old 12-06-2018, 09:53 AM   #29
barnesbr
 
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Drives: 2018 ZL1 10 spd
Join Date: Jul 2011
Location: Tampa, FL
Posts: 87
So, I just noticed this on my ‘18 recently. I’ve been trying to diagnose it driving and it’s been getting proressively worse. Opened the hood with the car running and put my ear next to the upper pulley, definitely the culprit. Guess it’s time for a dealer trip ��
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