My truck recently had the fuel pump replaced, and about a month later the "check fuel cap" light (code P0457) came on. It appears that the Y connector for the fuel tank vent valve to the EVAP canister is broken on one side. My guess is that it was inadvertently snapped when the gas tank was removed to access the fuel pump. Any suggestions where I can order this part? Thanks!

 

Im having the same issue right now.