There is one more "AC DELCO GM 12561092 TENSIONER ASM. DRV BELT" for $25.99 shipped on eBay if anyone out there needs one.
F.Y.I.- I talked with Joe Heath (Heath Diesel) and he said that his heavy duty tensioner would cure the problem. I bought the AC DELCO tensioner before I heard back from him. Hopefully the new AC DELCO tensioner will cure the problem too