Check Engine Light Due to Gas Cap Issue on GMC Yukon XL 2500

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

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Average mileage: 43,000 (43,000–43,000)
4 model years affected: 2007, 2008, 2009, 2010 more
5 people reported this problem
1 person shared problem details
The gas cap was not on properly
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