My wife has a 2005 JGC (that she loves by the way). While working on my son's car she pointed out that the passenger side carpet was very wet. I went to look, expecting to see water, but instead it was wet ( about 9 inch circle ) with what appears to be dirty transmission fluid. Red, a little tinged with brown. How the hell did that get there? Could this be an ominous sign? I assume there are no transmission cooler lines running inside the cabin...and I am not sure how that could have gotten into the heater core. OR if it is even a heater core issue. I have limited time so I doubt I can repair the Heater core myself if that is the issue. I would like to get some idea from someone more knowledgeable first before I decide to tear into it or take it to a mechanic shop.