Tool Required

J 34730-1A Fuel Pressure Gauge

Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

1. Disconnect the negative battery cable.
2. Loosen the fuel filler cap.
3. Remove the left fuel rail cover.
4. Clean the area around the fuel pressure connection with a spray type engine cleaner, GM X-30A or equivalent, if necessary.
5. Remove the cap from the fuel pressure connection valve.
6. Relieve the fuel system pressure. Refer to the Fuel Pressure Relief .



7. Remove the fuel pressure connection valve assembly using a standard valve core removal and installation tool.

1. Install the fuel pressure connection valve assembly using a standard valve core removal and installation tool.
2. Tighten the fuel filler cap.
3. Connect the negative battery cable.
4. Inspect for leaks.

4.1.	Turn the ignition switch ON for 2 seconds.

4.2.	Turn the ignition switch OFF for 10 seconds.

4.3.	Turn the ignition switch ON.

4.4.	Check for fuel leaks.

5. Install the fuel pressure connection valve cap.



6. Install the left fuel rail cover.
7. Program the transmitters. Refer to Transmitter Programming/Synchronization in Keyless Entry.
8. Perform the idle learn procedure. Refer to PCM Idle Learn Procedure .