In the throttle body.
It is in the throttle body.
it is located right in front of the fuel rail going to your fuel injectors.....follow the tubing from your fuel filter mounted on the drivers side firewall....this tubing leads right into the regulator.
A new fuel pump helped my 93 G20. Plus try a full tune-up.It could possibly be the fuel pressure regulator or clean or replace your injectors, or replace the O2 sensor.
It is fuel injected.
In the fuel tank.
Take off the upper intake, the regulator is on the backside of the fuel injector unit spider.
The fuel relay on a 1992 Chevy G20 5.7 liter, 350 is under the hood attached to the firewall at the top, just under the wind screen
You need to lower the fuel tank to get at it.
The fuel filter for a 1986 Chevy G20 should be mounted on the frame under the van. The filter is an inline type and should be easy to change.
The 1990 G20 Chevrolet Van fuel relay switch is located on the front of the fuel tank. The relay switch is next to the fuel pump.
I don't think there were any carburetors on the 1995 G20's so it is an electrical fuel pump inside the tank.
35 p.S.i.