Where is the fuel pressure regulator located on a 1998 Chevy van?

On a 1998 Chevy van (assuming a common engine like the Vortec V8 or a 4.3L V6), the fuel pressure regulator is typically integrated into the fuel rail. This means it's not a separate component; it's built into the part that distributes fuel to the injectors. You'll find the fuel rail on the top of the engine, near the intake manifold.