is there a to raise the fuel line preassure or is it just a new fuel pump needed on 1998 Pontiac Bonneville

Car died when shut off. wasn't getting fuel, replaced fuel pump & sock,still didnt run mech said the new fuel pump was defective, replaced it again still wont workwont run

1 answer
Verify fuel pressure or lack of with a fuel pressure tester. Then verify injector pulse with a noid light.