how do i take the fuel pressure sensor off my 2006 impala 3.5l v6? can i get to on 2006 Chevrolet Impala

two codes from a obd machine says po463 and po452. fuel lever sensor and evaportive emiss system pressure sensor.

Asked by for the 2006 Chevrolet Impala
they are both part of your fuel cell assm in fuel tank.there are sold as an assmembly. big $$$$$$$$$$$$$$$