First breakdown in our 2000 Holiday Rambler Imperial. Cummins ISC 350 with 47,000 miles. On our way home and two lights erupt on the dash. WARNING and STOP ENGINE. Obviously I stop the engine . After looking for anything obvious, I restart the engine. WARNING and STOP ENGINE light again. Not overheated, shows good oil pressure, everything seems O.K. but lights persist. Call Good Sam ERS and instead of a tow to a competent service center, I get a service call from totally imcompetent provider. After 48hrs (Yes 48 hrs.) they replace the oil pressure sensor. Warning light persists. I am forced to call Cummins service assistence as these clowns can't even tell me if its safe to drive. Suprise, its now drivable but needs to go to Cummins to be reprogramed to run properly.
Moral of the story. Insist that you be towed to a shop with certified and competent diesel mechanics.