Crank but no Start 2008 silverado after battery replacement.
 

Hello iv got a head scratcher I'm trying to figure out. I bought a 2008 Chevy Silverado 1500 5.3 4x4 at auction and it had a bad battery. I jumped it and it ran fine I pulled it out of the yard and everything died. Tried jumping it again and all power was back and will crank but will not fire. Replaced battery and same issue. Everything works power wise and will crank but will not fire pump runs and you can smell the fuel too. It's like something is not letting it start but there is no security light on the dash staying on so I am at a loss. Any help would be greatly appreciated. Thanks