question about gas cap
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New User
Joined: Jul 2008
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question about gas cap
I have a 2003 Supercrew Lariat, last summer and now again this summer, I'm having issues with my gas cap. After a fill up with a full tank of gas, about 30 miles of driving or sitting a day, the gas cap comes loose to where my gas cap light comes on. I have even replaced the locking cap with the original cap and the same thing happens. Is pressure in the tank, due to the summer heat doing this? Is there a tank vent line that might be blocked? Any help would be greatly appreciated...P
Get the codes read and post the DTC back here in a reply to this thread. we can help you from there. Good luck! 
Posting Guru
Joined: Oct 2005
Posts: 2,209
Likes: 1
From: Louisville, Kentucky
The gas cap light is a form of the CEL, just dedicated to the cap problem. the computer will still have a DTC stored. Get it read and post it here so we know more about what is going on. Good luck! 
