Yukon/Denali 2WD V8-5.3L VIN Z Flex Fuel (2005)
4. Connect the fuel composition sensor fuel lines.
5. Install the fuel line retainers (1).
6. Connect the fuel composition sensor electrical connector.
7. If equipped, install the transfer case shield.
8. Lower the vehicle.
9. 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.
