Well it's been a loooooong winter and spring, but the rv is out of the shed and back on the road!! The problem with the gauges not working was a broken wire somewhere between the VDC and the MC. I researched it all winter and even had the Freightliner tech support on the phone for over an hour while we (a friend) and I tried checking continuity and voltages on all terminals and in all locations. I finally broke down a couple of weeks ago when we got it out of the shed and took it to Freightliner. They looked for 5 hours and found the broken wire. Repaired it and we're back on the road.
I certainly know more about the electrical system in our Coachmen Cross Country than I did before. But I guess that's a good thing.
It wasn't as bad as it could have been, so we are grateful for that. Oh yea, total bill $600.00.