Question about 2007 GMC Envoy Denali

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My gas cap keeps loosening up on my 2007 envoy denali

Light comes on frequently because of the fuel cap loosening.
I have had the dealer check and it still comes off. What a pain!!!

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  • kevin carpenter May 11, 2010

    have you tryed replace the cap . i would replace the cap with a oem cop

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  • GMC Master
  • 6,674 Answers

Anybody tried rubbing a sticky substance on the "O" ring of the cap? I don't care if it's a candy from a kid, it's worth a try. Clean threads of filler with alcohol real good before too. I'd try taking the cap off, and roughing the threads up with rough sandpaper too, just to give it more bite. Blow threads off good after.

Posted on Dec 19, 2008

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Posted on Jan 02, 2017

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