[Capri306]

If it's on the outside of the transmission, I would venture to say a vehicle speed sensor could be the problem. I'm not entirely sure on an AOD-E that there's not hydraulic pressure sensors or anything of that sort (I just haven't had the luxury of having to deal with one), though. Sounds like a problem that might be in a technical service bulletin somewhere, since a few of you have it. Maybe worth looking into???