Fuel Tank on 1997 Ford F-250

My front fuel tank is 3/4 full and my truck will not start. My rear tank works fine. Is there a selector switch proble or a fuel pump problem?

Asked by for the 1997 Ford F-250
Both tanks have their own pump, So either the front tank isn't getting power from the selector switch or the pump itself has failed.
1 more answer
if this truck has two fuel pumps. Suspect faulty front fuel pump.