1997 GMC Jimmy Regulator in the Fuel pump?

I emailed yesterday about our car dying when we stop accelerating, after we replaced the fuel filter and fuel pump, you emailed me back with the following:

" Clean throttle plate on both sides with choke cleaner and check fuel pressure with a gauge if it's a V6 it should have 60-66 psi if not it may be a regulator. It should hold with in 5lbs for at lest 5 minutes. After key off."
My question: is the regulator in the fuel pump we just replaced or is the regulator a separate part we need to replace? The PSI checked at around 38 with the new fuel pump



Tiny

Hmac300