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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Controls - 4.3L - Introduction (2 Of 2)) >> Description and Operation >> Fuel System Description >> Fuel Fill Pipe

Fuel Fill Pipe

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The fuel fill pipe has a built-in restrictor in order to prevent refueling with leaded fuel. Once the fill vent is obstructed, fuel backs up the fill pipe and trips the dispensing nozzle. The fuel tank vent valves are connected and route to the canister to collect hydrocarbon emissions during operation of the vehicle.

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