Help / Stranded / RV will not start /Road Service is no help

I know nothing about your vehicle but I do know that some vehicles use the same part number/identical solenoid for many different functions. The solenoid is just a switch and how it is wired determines what it controls.
In any case, if you have a couple of the SAME IDENTICAL solenoids on your coach you may try switching their positions to see if your symptoms change. If each of your solenoids have different part numbers, then forget this advice.