My 2004 6.0 turbo diesel is not starting. I have changed the oil filter, fuel filter... may have run it out of gas but it has gas now... what else can I do

This link should help:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-8.html#post1415281