Open the bleed valve of your fuel filter housing on top of engine to see if fuel is flooding when your engine is running. If not, your OPS is shot, or your lift pump - even new - is in trouble.
Though, I would vote for a faulty PMD, or extension if any.
1994 full size BLAZER aka Caramel (sold)
... but still linked to 6.5l world
Last edited by matuva; 10-24-2017 at 05:59 PM.