It doesn't have one. To test the fuel pressure an adapter has to be installed between a fitting at the fuel filter and the fuel filter, preferably the fitting feeding into the filter from the pump.
THE FUEL PRESSURE ON ALL CHEVY'S 95 AND UP IS 60 TO 65 PSI
No or low fuel pressure
It is located in the throttle body.
NO nothing hooks to it.
Take off the gas cap.
9 to 13 LBS. No more and no less.
Where to buy fuel line for 1994 Chevy 5.7 fuel line suburban?
YES. Bad fuel pump pressure can cause that problem too.
under hood, on fuel rail which is connected to each fuel injector there should be a valve that looks like a tire valve. That is the shrader valve, test fuel pressure there.
It is in the fuel tank .
55 to 62 LBS. No lower and no hayer or you will have starting are running problems.
It is inside of the fuel tank.