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GMC Yukon XL 1500 Check Engine Light Due to Gas Cap Issue

 
GMC Yukon XL 1500 Problem
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Model Years Affected: 2004, 2007, 2008, 2009, 2010

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

  • Visitor, , 120,000 mi

    Engine light code indicated loose gas cap - replace. I have replaced it 3 times parts store caps and oem caps. Still get light about every 6 months. When I open gas cap, gas tank is pressurized!

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