Yukon XL 4WD V8-5.3L (2011)
8. Remove the caps from the fuel rail and EVAP line.
9. Connect the EVAP line (1) quick connect fitting to the chassis line. Refer to Plastic Collar Quick Connect Fitting Service See: Fuel Line
Coupler/Service and Repair/Plastic Collar Quick Connect Fitting Service.
10. Connect the fuel feed line (2) quick connect fitting to the fuel rail. Refer to Metal Collar Quick Connect Fitting Service See: Fuel Line
Coupler/Service and Repair/Metal Collar Quick Connect Fitting Service.
11. Install the fuel fill cap.
12. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection See: Starting and Charging/Battery/Battery
Cable/Negative/Service and Repair/Battery Negative Cable Disconnection and Connection.
13. 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.
14. Install the intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement See: Engine, Cooling and
Exhaust/Engine/Intake Manifold/Service and Repair/Upper Intake Manifold Sight Shield Replacement.