Recently changed fuel pump,relay,and fuse,but still not getting fuel?

Indicative of a security system malfunction - security light in dash is telltale..

Turn key on , find security light on dash. Is it lit up or flashing or does it light up then go away? If it stays lit up or flashing there is a problem with the anti-theft. Either way the vehicle will need to go to a repair facility with the proper scan tool to "see" what is malfunctioning. Usually it is the ignition lock cylinder or wiring. After replacing lock cylinder it will need to be re-learned into the computer.