I will be comparing apples to crab apples but bear with me. Our 08 HR with a 2500 Allison had an issue of losing the converter lock up but only did it after heavy rain. I finally located the primary harness connector and it had water in it. Disconnected it, sprayed it with brake spray, blew it out with compressed air and then waterproofed (plastic bag and good electrical tape) the connector after reconnecting. You may have a loose wire in your main connector or possibly water and your RV is reacting the opposite of mine. Did you run through any heavy rain or deep water prior to this happening? Ours would usually act up the following day .
Randy
