Check Engine Light Due to Gas Cap Issue on Chevrolet Venture

Illumination of the Check Engine Light can be caused by a loose or worn gas cap.

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Average mileage: 100,394 (30,000–211,000)
9 model years affected: 1997, 1998, 1999, 2000, more2001, 2002, 2003, 2004, 2005
29 people reported this problem
6 people shared problem details
I replaced the cap with a new one and light did not go off.
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Gas cap was too loose. Tightened it up, problem solved.
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Check engine light stayed on for a few days, and my wife took vehicle to chevrolet dealer for service. The mechanic said there was a leak around the gas cap area and they fixed. I was charge for 1 hour labor plus tax.
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It's had the check engine light since
Used diagnostic code reader, and it gave me the problem "evaporative system leak". Auto parts store said change the gas cap. Got new cap, problem solved
Loose gas cap = "check engine" light. reset/replaced cap, no problem since.
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