Car Problem Reports

Chevrolet Tahoe Check Engine Light Due to Gas Cap Issue

Chevrolet Tahoe Problem
23 Reports
Me Too

Model Years Affected: 1999, 2001, 2002, 2003, 2004, 2005, 2006

Average Mileage: 104,944 mi (18,000 mi - 243,336 mi)


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

  • Gas cap was lose

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  • Visitor, , 112,000 mi

    I had this problem for over a year. Dealer "fixed" it for two weeks and $700. After being entirely frustrated I put it up on ramps myself and took a look underneath the rear of the car by the gas tank. Sure enough a hose was unplugged, I cleaned the oring in the fitting and snapped it back together. Problem fixed. NO $$$

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  •  Rookie

    check engine came on and I went to my local O'reilly's and used there machine to diagnosis the problem. The issues was resolves after I took my Tahoe to the dealership to get repaired.

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  • Visitor, , 60,000 mi

    OMG, on going gas cap problem and engine light is going on. Way to expensive to pay a company to check the light and make the light go off. Really we need to buy a chip every time at $400. Any cheaper way to get this done??

    Please give me ideas.......

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  • Visitor, , 243,336 mi

    check engine light stays on. Throws four codes

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  •  Rookie

    YOu can tighten the gas cap and it goes away--this is the 3rd gas cap we've replaced.

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  • Visitor, , 86,000 mi

    Engine light on due to gas cap issue but we have not been able to fix it, switch cap several times, problem continues.

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  • Visitor, , 75,000 mi

    my i just unhooked light came on an the sensor throwing the code to get light off

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