I spent the afternoon crawling around and under the truck looking, disconnecting and reconnecting.  I thought I had it.  The cables in the battery box had some corrosion inside the connectors, especially the ones the 14 gauge wires to the ECM went to. (see photo below)  I cut the wires, cleaned them up and soldered them to a new 3/8 ring terminal. Along with 3 other guys we looked and poked and prodded and decided maybe that was it.Truck fired up ... for maybe 2 seconds then died.

May I pause here and say grawlix was not the term used at this time.

One of our guys called a friend in Indy who is a diesel mechanic.  His suggestion is it sounds like a crankshaft sensor.  He says a camshaft sensor would probably let it run, just poorly.

We do not have the equipment to reade error codes.  We're more or less 50 miles to the nearest dealer.

Ideas?

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