help just got a 2007 dodge ram 1500 slt bighorn 4x4 and the gas cap light comes on we changed the cap same thing dealer changed the fuel tank out no change anybody have a answer for this ? going back to the dealer on friday and the check enigine light came on about 2 days later thanks for any help

 

Gas cap light?

 

Gas cap is a problem. I have had my truck since new and I am on my third cap. When I fill up I twist the cap three good turns and then back it it off the the tight spot. Most of the time this works, If I get a light I crank it a couple of times again and it usually goes out. It all started a long time ago with a back fire on a cold start after the truck had sat for a week. It was the only time it backfired and may not be related but that was when I got my first light. I have gone over everything and haven't found the problem. Good luck...

 

^^^^^ ditto

 

thanks

 

Same thing here...I took the cap off and put it back on. Obviously your problem is a little more difficult than mine...

 

well they got it fixed they put in a new fuel tank and two new sensors one under the hood and one down by the tank . pressure tested the system all is good