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Chevrolet Suburban 2500 Check Engine Light Due to Gas Cap Issue

 
Chevrolet Suburban 2500 Problem
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Model Years Affected: 2007, 2008, 2009, 2010

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

  •  Rookie

    On vacation in Florida, 1200 miles from home. Check engine light illuminates and I was lucky enough to be in an area where there was a dealer who stayed open later in the evening. The gentleman at the entry gate ran the code and it came back as a gas cap failure. Purchased and installed new cap and dealer reset computer. This seemed to be a cheap and easy fix. Approximately 800 miles into my return trip I recieved the same code via On-Star. I have replaced the cap 3 times with OEM equipment. Problem still exists. No problems with performance but I live in an area that requires emission inspections and now the code returns before the 100 mile requirement for the state regualated equipment will allow my inspection.

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