How do you replace a fuel pump in 1997 cadillac deville?

To replace the fuel pump in a 1997 Cadillac DeVille, first, disconnect the negative battery cable and relieve the fuel system pressure by removing the fuel pump relay and starting the engine until it stalls. Next, lift the vehicle and remove the fuel tank, which may involve disconnecting various lines and straps. Once the tank is out, access the fuel pump by removing the fuel pump assembly from the tank, replace the pump, and reassemble everything in reverse order. Finally, reconnect the battery and check for leaks before starting the engine.