Fill Valve: Removal

WARNING: This page is about a different car, the 2003 GMC Sierra and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Natural gas is stored under high pressure. If a leak occurs, the high pressure could cause a personal injury. In order to prevent Compressed Natural Gas (CNG) fuel leaks, always replace the CNG fuel system "O" rings during service.

NOTE: Combustible Gas Detector (J-45878) is required for this procedure. See Figure .

Release fuel pressure. See FUEL SYSTEM PRESSURE RELEASE . Disconnect the negative battery cable(s). Raise and support the vehicle. Remove the truck body or side panel as required on RPO ZW9 equipped vehicles in order to gain access to the fill valve. Disconnect the fill line at the fill valve.
Remove the bolts from the mounting plate. Remove the fill valve mounting nut. See Figure . Remove the fill valve from the vehicle.