Fuel Pressure Check Valve: Service and Repair

Fuel Rail:

TOOLS REQUIRED
J34730 Fuel Pressure Gauge

REMOVAL PROCEDURE
1. Clean the area around the fuel pressure connection with GM X-30A or equivalent.
2. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure. Service and Repair
3. Remove the fuel pressure connection cap (3).
4. Remove the fuel pressure connection valve using a standard valve core removal and installation tool.

INSTALLATION PROCEDURE
1. Install the fuel pressure connection valve assembly using a standard valve core removal and installation tool.
2. Install the fuel pressure connection valve cap (3).
3. Tighten the fuel filler cap.
4. Reconnect the negative battery cable.
5. Inspect for leaks.
5.1. Turn the ignition switch ON for 2 seconds.
5.2. Turn the ignition switch OFF for 10 seconds.
5.3. Turn the ignition switch ON.
5.4. Check for fuel leaks.
6. Reinstall the fuel injector sight shield.