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Serpentine belt

669 views 21 replies 6 participants last post by  Annalove11  
You either have the belt routed incorrectly or the wrong tensioner. Just because it’s a 5.3L V8 and AutoZone or another box store says it fits, that doesn’t make it correct for your oddball engine. The belt routing is completely different from the 5.3 in ‘16 Sierra. From what I can see though in very few diagrams, it looks much simpler than my engine and pretty straight forward. And your using the same belt so it should stretch/flex much easier than a new belt would