Electrical Issue

That's confusing. If the C/B are `on' but there is no voltage going to the GFCI that doesn't necessarily mean there is something wrong with the GFCI.
How are you checking the voltage to the GFCI? Did you take it out of the wall?

Yes. I took the GFI out and replaced it. Then I got the volt meter out. NOTHING!. So it's not the GFI, but I can't figure out what it is.

read this and it might help.

http://www.thecircuitdetective.com/gfis.htm

Check the circuit breakers on your inverter itself. These are different than the circuit breakers in your main electrical panel.

I checked the CB on the inverter... All in.

Just looking at circuit breakers don't mean they are really on.
Turn all the circuit breakers off applying light pressure toward off. Then turn main breaker on, followed by branch breakers one at a time.
Verify that the fuses and circuit breakers are good in the inverter. Check fuses for inverter with meter. Reset the circuit breakers in the inverter. make sure the inverter is powering up and is on.

First question: Did you have power to the bad GFI prior to messing with the electrical?

IF the second GFI is connected to the first one, you may not have the neutral connected properly. Start there and check your wiring. If that checks out then you'll have to start at the bad GFI and work backwards. Test each receptacle until you find a 'live' one. This is assuming you know all the plugs on that circuit. Once you've found that live one, turn off the circuit breaker and check for a loose wire in that box. Remember each circuit has two wires, the white neutral wire, which goes to the silver screw, and the hot, which can be any color other than white or green. That one attaches to the gold screw..your power travels out from the elec panel through the black wire and returns through the white one, completing the circuit. Any break in that system will cause any outlets downstream to stop functioning.....Dennis

Ok... still no good. I can tell you the GFI (over the bathroom sink) has nothing coming out. That means it only protects itself. There is no electric going in. Wires are cold. Three other plues are also dead. All on the same side of the coach.

Are the bad receptacles on a slide?

yes