Fill Valve and Fill Line

WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. 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. Refer to Fill Valve Filter Replacement for filter inspection and cleaning procedures. The fill valve mounting location varies with vehicle model. Refer to the owner's 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.