Hummer H2 Problem Report

Hummer H2 Check Engine Light Due to Gas Cap Issue

(13 reports)

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

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. -
Check engine light went on after awhile and not only was realized that putting in gas and attendant did not seal correcty. -
still does it...and dealer won't fix -
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 ! -
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. -
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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