Digging this up from the grave. I think I have the same issue as described here. I have been hunting the noise near the rear seats by the driver see door for a month now and I think when plugging the seat belt in for my son I could duplicate the squeak when moving the seat belt in and out and swiveling the upper seat belt mount some. I'm going to try taking it out altogether tomorrow and see if that is it or if it is the window issue described earlier n this thread.
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