Yukon XL 2500 2WD V8-8.1L VIN G (2004)
18. Refill the fuel tank.
19. Install the fuel fill cap.
20. Connect the negative battery cable.
21. 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.