I have a rear creaking noise that occurs whenever the car goes over an uneven surface and the car twists. It sounds like a squeaky spring or Styrofoam moving. The dealer tried adding some insulation to the Styrofoam under the floor behind the 3rd row to no avail. Bsoars said that it required a new spot weld to fix, but I was not able to find any description using search. The car is quiet except for this so I would like to get it fixed. Does anyone else have this noise? Has anybody had it fixed on the LWB? (or SWB?) Thanks for all the help I've received from this forum.