Check Engine Light Due to Gas Cap Issue on Chevrolet Impala SS

A Loose or worn gas cap may cause Check Engine Light to illuminate.

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Average mileage: 110,233 (68,700–145,000)
6 model years affected: 1996, 2004, 2006, 2007, more2008, 2009
13 people reported this problem
2 people shared problem details
If I do not make sure my cap click and is on tight I get a check engine light.
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y is da check engine light coming on? when i drive on da highway (fast) no light, buy when i dr...
I did replace the gas cap with a new one from auto parts store.
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