Question about Pontiac Grand Prix
Hello: This code indicates a problem with the evap system vent valve. A stuck closed vent valve will affect the fueling, if air can,t get out of the tank while fueling you will have a hard time filling the tank. You didn't say what year/model you have so the valve may be near the fuel tank or inside the tank. This problem should not affect fuel mileage.
Posted on Mar 28, 2011
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Posted on Jan 02, 2017
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