Welcome to the forum. Attaching a basic GFCI outlet schematic example which has two downstream common outlets wired to the GFCI Load terminal in order to also ground fault protect them. Of course you could have more than two downstream outlets which sounds perhaps like what you have.
Do you have more than one GFCI outlet (with the reset/test buttons mounted on it/them) in your coach? If yes, then as TurnerFam says you may have more than one GFCI circuit protecting some of the other dead outlets in your coach too. Check all 120VAC breakers are not tripped and that all GFCI receptacles are reset. Breakers can sometimes trip but still look like they are on/up.....if in doubt click them off then on again.
Can you clarify the following:
What did you mean by “I replaced and then removed the replacement wiring direct”
“I show voltage and amperage at these outlets but they will not power the device that is plugged into the out”. Do you mean you can measure 120VAC across the line and neutral terminals of a “dead outlet”, but when you plug a TV into that outlet, the TV won’t work?
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