2007 3500 no start

Hi, my friend has a 2007 3500 HD hemi 6-speed that sputtered and died. The gascap light has been on for a while. He has replaced the gascap to no avail. We checked the fuel pressure and it is zero. It seems odd for the fuel pump to go out so soon and with only 55,000 miles on it. Any help will be most appreciated.