Why does the front driver door sound ajar when driving/turning at slow speed over gravel?

you could have a bad cab mount also look under carpet or mat look for rust on floor pan.

You might ask the dealership to check if the proper insulation and weatherstripping are present. Problems like these are hard to diagnose & repair for dealer techs, so be patient with them as they help you figure out how to solve the problem. Another option would be to wait a few months and contact them again -- often with the newer vehicles the engineers need time to find a fix for problems that are occurring. We had a large number of 2007 Dodge Caravans with a squeak/creak noise. People came into the dealership describing the exact same way -- "it squeaks/creaks!" It was not until August of this year that the engineers found the problem -- a mounting tab on a bolt inside the front frame rail could be improperly touching the frame rail and causing the sound. An official bulletin was then released by Chrysler and we fixed them. :)

hollow or like a small tapping? i know the end bearing on steering columns start making a noise and normally over bumps or turning steering wheel