Question about 2004 Chevrolet Suburban

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Having difficulty filling gas tank of my 2004 Suburban at gas station. The gas pump constantly clicks off. Cannot fill at normal speed. I have recently had the check engine light appear -- stating that the gas cap is off. Can you advise what may be wrong.

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  • Anonymous Mar 12, 2014

    Cannot get gas to fill. Pump constantly clicks off.

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You may have a fuel tank vent valve that isn't working. This valve lets air into and out of the fuel tank as fuel is added to the tank and then later used by the engine. If the valve won't open or is plugged with dirt/dust/debris then it's becomes very difficult to add fuel to the tank. This problem would also cause the EVAP system to fail a self test and turn on the check engine lamp with a related service code. Often there is more than one reason a particular code like this can be set, a loose fuel cap being just one of them, and it takes a bit of testing to determine the exact cause. A good service facility should be able to test the system and determine what is wrong fairly easily on this one. Good luck, hope this helps.

Posted on Aug 06, 2010

Testimonial: "Thanks so much, finally a straight forward repsonse."

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