C 1500 Truck 2WD V6-4.3L VIN X (2003)
1. Lubricate the new O-rings with clean engine oil.
2. Install the regulator seal backup ring (15).
3. Install the regulator seal upper O-ring (16).
4. Install the regulator assembly filter (17).
5. Install the regulator seal lower O-ring (18).
6. Assemble the regulator with the vacuum tube pointing down into the regulator retainer clip.
7. Install the fuel pressure regulator retainer clip (13).
8. Install the upper manifold.
9. Tighten the fuel fill cap.
10. Connect the negative battery cable.
11. Inspect for leaks.
11.1. Turn the ignition ON, for 2 seconds.
11.2. Turn the ignition OFF, for 10 seconds.
11.3. Turn the ignition ON.
11.4. Inspect for fuel leaks.
