Fuel System Pressure Release
WARNING: This page is about a different car, the 2002 Oldsmobile Intrigue and 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
Turn ignition off. On Aurora, remove rear seat cushion to access battery. On all models, disconnect negative battery terminal. Loosen fuel filler cap. Remove mounting the 2 mounting nuts from the injector sight shield (top engine cover). Lift the injector sight shield off the mounting studs by lifting at the front of the cover. Install Fuel Pressure Gauge (J-34730-1A) to fuel pressure connector of fuel rail. Wrap shop towel around pressure connection when installing fuel pressure gauge to absorb fuel leakage. Install gauge bleed hose into an approved container. Open bleed valve to bleed fuel pressure.