Has anyone here heard about a thumping that you can feel in the floorboards? I can feel it at 45+ while cruising. It feels like a balance problem, but I just had my tires rotated & balanced and the same thing. It does not effect the steering wheel, so not sure where it's coming from. I have about
28k miles on it.

Thanks for any help.

 

do you have steps on your truck. my dad had the same problem. his step was loose and when you hit any size of a bump it makes a thump in the floorboard. just a thought.