Where is the fuel pump reset switch on 2003 Chevrolet Impala?

There is no fuel pump reset switch on a 2003 Chevrolet Impala (or virtually any modern car). If your fuel pump isn't working, the problem is almost certainly a more serious mechanical or electrical issue requiring professional diagnosis and repair. Things like a faulty fuel pump, a blown fuse, a problem with the fuel pump relay, or even a bad fuel pump control module are all possibilities. Don't try to reset something that doesn't exist; take it to a mechanic.