Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: If the fuel pressure regulator is to be reinstalled, inspect the filter screen for contamination. If the filter screen is contaminated, replace the regulator.

Lubricate the NEW O-rings with clean engine oil.
Assemble the following NEW parts to the fuel pressure regulator:
- Backup ring (7)
- Regulator seal O-ring (8)
- Regulator (9)
- Regulator seal O-ring (10)
Install the fuel pressure regulator with the vacuum tube pointing down.
Install the fuel pressure regulator retainer clip (5).

Fig 1: View Of Fuel Meter Body Assembly Components

Courtesy of GENERAL MOTORS CORP.

Install the upper manifold. Refer to Intake Manifold Replacement - Upper in Engine Mechanical-4.3L.
Tighten the fuel fill cap.
Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure (Single Battery) or Battery Negative Cable Disconnect/Connect Procedure (Auxiliary Battery) in Engine Electrical.
Inspect for leaks.
1. Turn the ignition ON, for 2 seconds.
2. Turn the ignition OFF, for 10 seconds.
3. Turn the ignition ON.
4. Inspect for fuel leaks.