Car Problem Reports

Hummer H2 Check Engine Light Due to Gas Cap Issue

Hummer H2 Problem
13 Reports
Me Too

Model Years Affected: 2003, 2004, 2005, 2006

Average Mileage: 91,064 mi (30,000 mi - 124,000 mi)


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

  • Visitor, , 70,450 mi

    Tighten feul cap warning.. replaced cap. Lasted 4 days then started again and now I have an engine light on.. gotta take it in to have it checked.

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  • Visitor, , 102,000 mi

    Check engine light went on after awhile and not only was realized that putting in gas and attendant did not seal correcty.

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  • Visitor, , 87,000 mi

    still does it...and dealer won't fix

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  • Visitor, , 104,000 mi

    the service garage said it was rust on filler neck ,they sanded it and it still happened. I discovered that the cap always felt loose and decided to replace it, in doing so , I found out that part of the rubber on the cap was missing . I hope this fixes the problem !

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  • Visitor, , 120,000 mi

    shop said to get a new gas cap. mine cap cover just snaped off one day. so i got out the super glue. but now the cap will not click when i try to tighten it. so know i will buy a new one.

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  • Visitor, , 124,000 mi

    this is a very common problem replaced 2 gas caps due to engine light also 2 times on my 2500 series

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