Yukon XL 2500 2WD V8-6.0L VIN N (2006)
Tighten the bolts to 2.3 N.m (20 lb in).
17. Install the fuel tank filler housing to body TORX(R) screws (1) and retainer (2).
Tighten the screws to 2.3 N.m (20 lb in).
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.
