To locate it:
1. Open the hood: Access the engine compartment.
2. Locate the fuel rail: This is the horizontal pipe that runs along the top of the engine, usually near the intake manifold. It's where the fuel injectors are connected.
3. Identify the regulator: On the fuel rail, you'll see a component that is likely connected to a vacuum line (a small hose). This is the fuel pressure regulator. It's often integrated and not easily identifiable as a separate piece. You might see a small diaphragm or a vacuum port.
Important Note: Because the fuel pressure regulator is integrated into the fuel rail on this model, you can't easily replace just the regulator. If it's faulty, you'll likely need to replace the entire fuel rail assembly or find a rebuild kit specifically designed for that year's fuel rail.
It's best to consult a repair manual specific to your 1996 Chevy truck model (1500, 2500, etc.) for precise diagrams and locations. The engine size will also influence the exact location and appearance.