Yukon/Denali 2WD V8-6.0L VIN U (2004)
15. Connect the EVAP purge solenoid electrical connector (1).
16. Connect the generator electrical connector (3).
17. Install the wire harness bracket nut (2).
Tighten the nut to 5 N.m (44 lb in).
18. Tighten the fuel fill cap.
19. Connect the negative battery cable.
20. Use the following procedure in order to inspect for leaks:
0. Turn the ignition ON, with the engine OFF, for 2 seconds.
1. Turn the ignition OFF for 10 seconds.
2. Turn the ignition ON, with the engine OFF.
3. Inspect for fuel leaks.