Our diesel truck 2003 ram 2500 fires but not starting. Need help as travelling on 2003 Dodge Ram 2500

Please any advise. Our truck is having trouble starting. We changed air And fuel filters and seemed ok but now not starting Specially when it is hot. When we plugged it in It seemed to help although it is summer. Why that. Then even when cold it started but after longer cranking Now we are travelling and it had to be towed. Waiting for Shop to open to take it to. Anyone else have this prob???? It is diesel dodge ram 2500 2003. Any advise greatly Appreciated.

by in Sweet Grass, MT on August 16, 2014
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