CPI (4.3L VIN W)

Fuel system is under pressure, which must be relieved before servicing fuel system. Fuel pressure may be relieved by one of the following methods.

• Disconnect fuel pump at rear body connector. Start and allow engine to run until it stalls. Crank starter 3 seconds to remove remaining fuel from fuel lines. Reconnect rear body connector.
• Install Fuel Pressure Gauge (J-34730-1) on fuel pressure connector of fuel rail. Wrap shop towel around pressure connection when installing fuel pressure gauge to absorb fuel leakage. Place gauge bleed hose in container. Open bleed valve to relieve fuel pressure.