Avalanche 2500 4WD V8-8.1L VIN G (2003)
1. Install the following onto the fuel pressure regulator (8).
1.1.
A NEW small O-ring (13)
1.2.
Regulator filter (12)
1.3.
A NEW large O-ring (11)
1.4.
Backup ring (10)
2. Lubricate the fuel pressure regulator large O-ring and the small O-ring with clean engine oil.
3. Push the fuel pressure regulator into the housing on the fuel rail.
4. Install a NEW fuel pressure regulator retainer (9).
5. Install the fuel pressure regulator vacuum line.
6. Install the engine sight shield.
7. Install the fuel fill cap.
8. Connect the negative battery cable.
9. Use the following procedure to inspect for leaks:
9.1.
Turn the ignition ON, with the engine OFF, for 2 seconds.
9.2.
Turn the ignition OFF for 10 seconds.
9.3.
Turn the ignition ON, with the engine OFF.
9.4.
Inspect for fuel leaks.
