Fuel Pressure Service Valve Replacement for GMC Truck Yukon - 2WD 2001

1. Remove the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement in Engine Mechanical.
2. Relieve the fuel system pressure. Refer to Fuel Pressure Relief .



3. Clean the area around the fuel pressure connection with GM X-30A or equivalent.
4. Remove the fuel pressure connection core (24) using a standard valve core removal and installation tool.

1. Install the fuel pressure connection core assembly (24) using a standard valve core removal and installation tool.
2. Tighten the fuel filler cap.
3. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
4. Use the following procedure in order to inspect for leaks:

4.1.	Turn ON the ignition, with the engine OFF, for 2 seconds.

4.2.	Turn OFF the ignition for 10 seconds.

4.3.	Turn ON the ignition, with the engine OFF.

4.4.	Inspect for fuel leaks.

5. Install the fuel pressure connection valve cap (23).
6. Install the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement in Engine Mechanical.



7. Install the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement in Engine Mechanical