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...


Paul

 

First I've ever heard of this.

 

That's really wierd, I have the same truck and have never heard of this either. I wish I had some advice for ya man, I have no idea.