Envoy 4WD V8-5.3L VIN P (2004)
Fuel Return Line: Description and Operation
FUEL FEED AND RETURN PIPES
The fuel feed pipe carries fuel from the fuel tank to the fuel rail assembly. The fuel return pipe carries fuel from the fuel rail assembly back to the fuel
tank. The fuel pipes consist of 2 sections:
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The rear fuel pipe assemblies are located between the top of the fuel tank and the chassis fuel pipes. The rear fuel pipes are constructed of nylon.
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The chassis fuel pipes are located under the vehicle and connect the rear fuel pipes to the fuel rail. These pipes are constructed of steel with
sections of rubber hose covered with braiding.
