Now I do not know if your rig is Gas or Diesel but my comments apply to both so it does not matter.. My daughter had that happen to her in her car (Gas).
Seems she had a common RV problem.
Now.. A non-Joke.. (I will explain) Many RVers have a few screws loose,, And I might add, more than a few loose Nuts in RV's as well.
Why that's not a joke:
The problem was a ground connection,, This is eitehr a screw (loose) or a stud (With a loose nut) It shut her car down HARD. She called me, We called AAA and the local Dealer, I responded faster than AAA, strung triangles (By the way there is a proper way to do those, Get a copy of the Commercical Driver's Manual from your local Driver's License folks.. In Michigan that is SOS, and the book is "What Every Commercial Driver Must Know" It describes proper use of Triangles.. Something dang few Commercial drivers know how to do).
They had to replace the entire wiring harness to fix it.
But it's more likely a loose screw somewhere. GOOD LUCK.
