I have had my 01 Chevy Silverado 2500HD LT 8.1L for about 3 years now and it has always had this high pitched popping/squeaking noise. My friend and I replaced every pulley we could, as well as the alternator, and swore the squeaking would stop. It never stopped and stopped immediately as soon as I poured some water on the bottom of the strap. I noticed this belt in a YouTube review and what you know aren't tweets anymore. THIS PRODUCT WORKS =-)
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