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2007 Chevrolet Cobalt Question: Check engine light stays on, but car rides and operated fine??????? not gas cap

 

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Dee2007, Saint Paul, MN, August 19, 2013, 16:50
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I've checked the gas cap, air filter, and coolant levels. All of these are fine, so could it be from gasoline with a high level or grade of octane?

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