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Chevrolet Express 3500 Check Engine Light Due to Gas Cap Issue

 
Chevrolet Express 3500 Problem
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Model Years Affected: 2003, 2004, 2010

Exhaust & Emissions Affected: Gasoline

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A Loose or worn gas cap may cause Check Engine Light to illuminate.

  • Visitor, , 110,000 mi

    check engine light came in driving in IL IN and KY. Went back out when I got back to TX where it was alot warmer. Happened twice on diffrent trips into a colder climate. Turned out to be a bad gas cap...

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