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: 47,500 (43,000–52,000)
11 model years affected: 2000, 2001, 2002, 2003, more2004, 2005, 2006, 2007, 2008, 2009, 2010
14 people reported this problem
1 person shared problem details
The gas cap was not on properly
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