Car Problem Reports

GMC Sierra 2500 Check Engine Light Due to Gas Cap Issue

GMC Sierra 2500 Problem
8 Reports
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Model Years Affected: 1999, 2000, 2001, 2002, 2003, 2004

Average Mileage: 145,500 mi (112,000 mi - 179,000 mi)


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

  • Visitor, , 179,000 mi

    Emmisiions light on for months, was told to live with it, I brought it in for other work and they replaced the gas cap...light is off....hmmm go figure.

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