Fill Valve & Fill Line
WARNING: This page is about a different car, the 2003 Pontiac Sunfire, 2003 Pontiac Grand Am, 2003 Oldsmobile Alero, and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
The fill valve receives fuel from the fill nozzle at the CNG dispensing station. The fill valve seals to the dispensing nozzle with an "O" ring. The "O" ring must be inspected and replaced if missing or damaged prior to re-fueling. The fill valve contains an internal 380 micron filter element designed to trap contaminants. This filter must be periodically inspected and cleaned. The fill valve mounting location varies with vehicle model. Refer to the owners manual supplement for fill valve location and fuel tank filling procedures. The fill line is constructed of stainless steel line. The fill line connects the fill valve to the fuel tank and is sealed to the fuel tank with an "O" ring.