Yeahh...I dont think it is the fuel because I had the same thing on my previous 2009 Sport that did not have the 32 gallon tank.
It is almost like a delayed transmission crippled shift...
IDK...I am trying not to pay any attention because otherwise I will freak out and give it to the dealer to fix and we all know how "well" they fix things...
Will check my spare though -- thanks
Originally Posted by S.C. Express
Thumps... Do you have the 32 gallon fuel tank? If so that's your thump more than likely. It's fuel slosh... There are no internal fuel tank baffles to prevent this. Don't worry about it. Most report the problem is most noticeable between 1/2 to 2/3rds of a tank of gas. Another possibility... Spare tire is loose. I've seen a few rams with their spare swinging around quite violently. One more thing. Look around your interior, especially under the passenger seat. I found my factory wheel locks still in a plastic bag rolling around under there. These three things are are all fairly common.