What would cause my dash lights and my fuel pump to shut off and not start after

What is your question?

My car will suddenly shut off,dash lights will shut off and fuel pump will shut off as well then when i attempt to restart nothing happens for either a short or a long period of time then it suddenly will come back on but sometimes shuts back off immediatly

How long has your 1998 Cadillac Seville had this problem?

1 year