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Anyone have any suggestions? I don't know where else to start from. This problem is baffling me.

I have a 2007 Tahoe LT, normal gas and it is having some really bad issues right now. Little back story, it has punched a lifter in cylinder 1 and that was fixed a few years ago. Then it happened again so I replaced the engine with a Jasper long block. The truck has 170K miles on it and runs...