Car Problem Reports

GMC Sierra Denali Check Engine Light Due to Gas Cap Issue

GMC Sierra Denali Problem
10 Reports
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Model Years Affected: 2002, 2003, 2004, 2005, 2006, 2010

Average Mileage: 110,500 mi (86,500 mi - 135,000 mi)


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

  • Visitor, , 110,000 mi

    check engine light comes on. tighten gas cap and goes off for awhile. replaced gas cap but still happens.

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