shank
New member
low mileage C6 a high pitch noise has appeared suddenly . Varies with RPM water pump? alternator? What's common?
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Update: i shot the tensioner pulley with a bunch of WD-40 and let it sit over supper. Started and the noise was gone.low mileage C6 a high pitch noise has appeared suddenly . Varies with RPM water pump? alternator? What's common?