Detroit Diesel Power

1988 GMC 7000 with a 8.2L naturally aspirated Detroit. Truck shut off when driving and wouldn't re-start. Fuel filters were changed and still not so much as a puff of smoke out of the tail pipe.
I wasn't familiar with this particular engine so I pulled a service manual and educated myself.
Then it's just a process of eliminating potentials one step at a time, from easiest to intrusive.