never seen that problem
That also can happen if the vent is plugged..I know, I haven't either. Usually if the tranny is overfilled it will come out the breather.
You will need an internal wiring harness to fix this.Well I have a 02 GMC that leaking in the same area. It looks to be at the electric connection into the trans to me. It started as a drip at about 190K and has gotten worse from there.