If youve had the tranny serviced at all, it could be a lose tranny pan. If not. You should drop the pan, change the filter, install a new gasket and tighten all the bolts to 144 in. Lbs I believe. Also you should get a rubber gasket. The cork ones are trash if ya ask me but thats just my opinion. I think the rubber ones are much easier to work with and wont tear.
Also check the lines running to your radiator or transmission fluid cooling system. Maybe its leaking there. If so, check to make sure theyre tight. Hope this helps.
CCB- Chevy Chix Brigade
Friday, October 10th, 2008 AT 9:27 PM