My 97 2500 gmc with a 350 in it the feul pump went bad I changed it and the truck fires but won't start help please

I did not change the relay because the new pump is working I did change the filter though I have good pressure coming up to the intake manifold

Is it possible that there could be air trapped in the line ?

I will check that and see I hope it is right but with my luck I will have to go through and pull the tank all over again Lol thank you for your advise I will let you know what I find out

Not a bad idea