Looked into this a little further. I unplugged the recirculate actuator and the noise stopped, so I have narrowed it down to the recirculate actuator.
I pulled it off and let it free spin, it seemed to spin ok. Tried the doors, they were not bound at all. Put it back on and sure enough, click click click. At this point I tried the reset/learn cycle and it seems to have stopped, for now. Will report back when it comes back as I don't understand how it could just forget it's positioning programming
2005 WK Laredo. 4.7L Quadratrac-II (K&N)
1995 Camaro Z28 (too many mods to list)