I just replaced fuel tank, sending unit and fuel

Do you have spark coming from the plugs? if yes, how did you replace the fuel pump, remove the bed or drop the tank? If you removed the bed make sure that you tightened the ground wire on the frame at the rear near the taillight plug. If the ground is not tight or is broken the fuel pump will not work. If you didn't remove the bed, check the relay and fuse up front on the drivers side inner fender fuse box. I'd double check the ground wire at the rear as well just to make sure it's good.