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2016 2300 with 300hp Volvo. Just died while underway. Did not sputter and no alarms. Shut off instantly. Kill switch is attached and I have gas. New fuel filter, new spark plugs, great pressure high and low. Cranks does not start.
Sorry for being ignorant on this...is this an ironhead 5.7L/350cid V8 or based on the aluminum head 5.3L Gen3/Gen4 V8 engine?
Without knowing more I'd suggest something related to crank position is the issue, not having the reference available to fire the spark. Also checking various fuses and the keyed ignition switch's connections would be a good idea.