Avalanche 1500 2WD V8-5.3L (2008)
12. Connect the chassis wiring harness electrical connector (1) to the fuel pressure sensor.
13. Lower the vehicle.
14. Remove the caps from the fuel rail and EVAP line.
15. Disconnect the EVAP line (1) quick connect fitting from the chassis EVAP line.
16. Disconnect the fuel feed line quick connect fitting (2) from the fuel rail.
17. Install the fuel fill cap.
18. Connect the negative battery cable.
19. Use the following procedure in order to inspect for leaks:
1. Turn the ignition ON, with the engine OFF, for 2 seconds.
2. Turn the ignition OFF for 10 seconds.
3. Turn the ignition ON, with the engine OFF.
4. Inspect for fuel leaks.
20. Install the intake manifold sight shield.
Evaporative Emission (EVAP) Hoses/Pipes Replacement - Engine
