how do I know when my fuel pump has gone out on 1999 Buick LeSabre

car not turning over sounds like out of gas but is not out of gas

Asked by for the 1999 Buick LeSabre
The proper test would be to check for fuel pressure using a pressure gauge. If the fuel pressure is low the next step is to check for power and ground to the fuel pump, if that is ok chances are the fuel pump has failed.