Hi bpatmon and ron,
The buzz somewhat sounds like winding chain or spring?
I have the sound for about 2 sec. when I shift to D from N or P.
I have it when I shift to R as well, but shorter, like only 1 sec.
I don't hear it if I am inside the car with door and window closed, but if I am in indoor garage with window open, I can clearly hear it.
Are we talking about the same noise?
Mine is 2008 wrangler.