Sierra 1500 4WD V8-5.3L VIN Z Flex Fuel (2005)
17. Lower the vehicle.
18. Remove the caps from the fuel rail and EVAP line.
19. Connect the fuel feed line (1) at the engine.
20. Connect the EVAP canister purge tube line (2).
21. Install the fuel fill cap.
22. Connect the negative battery cable.
23. 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.
