Update.
I met a guy who stooped to use the dump station who lives nearby. He knew a guy who works on everything. So I got a hold of this guy named John who said he doesn't work on motorhomes. I told him I have plenty of room in mine as I can sit on the engine unlike most diesel pushers. He still was very reluctant, again saying he doesn't work on motorhomes. Again, I told him of the ease of working on mine. He was still trying in a very kind way to say no. I then told him of the other facilities refusing me and practically begging he said he would try and stop by later today. Well about 2 hours later he showed up, I walked him through my situation then he went to his truck, grabbed some tools and went to work. He performed a couple test the other tech did but took some readings at the ECM wire clusters for 2 voltage sources and 2 grounds, not sure which pin numbers. 1 ground seemed curious and led him to believe that the ECM is bad. But now he went a step further, he has several ECM's in his truck. He had one that wasn't exact but when we tried it the CAT data ports wnet hot. BINGO bad ECM. He ordered a new one from his supplier in OKC who also "flashes" then with the correct data. I told him I had nothing else to do and if needed I could drive wherever needed, I'd even get him lunch. So now just waiting to hear.
This guy doesn't advertise or selicit work, he doesn't work on motorhomes, has more work than he can handle ( his son gave him a hard time for coming ), and yet he came to help me. Someone is watching out for me today, Thankyou!!
Hopefully my next post will be on the road.