The engine had a life threatening malfunction. Currently, there are arrangements being made to move the truck to my insurance company's property. I'm sure my insurance company would allow and arrange a site visit to inspect the truck. It happened so fast and without warning, we were blessed that we were able to escape the truck without losing our lives or getting severely burned. Anyone who helped or passed by was put at risk due to the fire or possible explosion that could have accrued from the truck fuel tank or trailer propane bottles. The fire inspector and insurance company have conducted there preliminary inspections and are in the process of writing up their reports. There was no warning lamp, message or symptom of a engine problem or failure prior to the engine bursting into flames, but the only warning that accrued after the engine caught fire, was the engine was being shut off.