My 2010 has a clunk when the liftgate gets to the upper stop. I did not notice the clunk when it was new but maybe it was there. It is the same clunk you get if it encounters an object that prevents it from opening. I don't think it is the same issue as the liftgate TSB that states it falls a couple of inches and then closes. Mine stays open, just clunks or pops when it reaches the upper travel limit. I suspect the sensor or switch that tells the motor to stop at its upper limit is malfunctioning or do they all do this? Any ideas? Thanks in advance.