Question about 2001 Chevrolet Silverado 1500

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Fuel line schematics for 2001 silverado 5.3? - 2001 Chevrolet Silverado 1500

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  • oldracerbill May 11, 2010

    If the truck is stock and uses factory fuel injection there are two lines that run along the frame rail. The larger line with the fuel filter in it is the high pressure fuel supply line. It runs from the fuel tank to the injection system. The smaller line that runs from the injection system to the tank is the fuel return line. It returns unneeded fuel from the injection system to the tank. There is a very small third line. It runs from the tank to the carbon canister at the front of the truck and vents the tank. When working with the supply or return lines take precautions to keep high pressure fuel contained. Good Luck.



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