Buick Repair Questions? Ask a Mechanic for Answers ASAP
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When you are having trouble fueling the vehicle, this is most commonly due to a problem in the EVAP Vent System. This condition could be caused by a damaged EVAP vent Solenoid, a temporary blockage at the EVAP canister vent solenoid valve inlet, or a pinched vent hose. The Vent Solenoid is mounted to the EVAP Canister which is located at the top of the fuel tank. The tank will need to be removed to gain access (click here for image location: http://goo.gl/j1UQl9). Carefully inspect the electrical connector and wire harness for any loose, broken or damaged wires. Inspect the lines (rubber and plastic) for any cracks, holes or disconnections. If the visual inspection checks ok, suspect a faulty Vent Solenoid. Replacement should solve the problem. If you found this answer helpful, please help me by leaving a rating using the "stars" at the top of the page or click 'accept'.Rating or accepting my answer does not cost you extra. It allows me to be credited for answering your question.
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