Are there any mechanics in the house!?!?!?

I am not a mechanic but ran a big plant and did lots of troubleshooting...My bet is on the fuel system just like Charles has already said...If the truck was running fine before then it is a no brainer that it faulted when the gas went empty...might have to clear some sensors that probably came on when the gas tank went empty...And the sea foam is some of the best but it could of loosened some sludge in the gas tank and fouled your fuel system even more...probably fuel filters and fuel pump and possibly fuel injectors are sludged up/dirty...but a good mechanic should figure this out easily and use a process of elimination starting with the cheapest and easiest place to look and/or the most probable and work from there...this dude is having to make a house payment or something...cause he should know better...I know enough to not get screwed around...