I believe the seam between the Differential housing and the transmission is leaking on my 2001 GP with this 4t65e tranny. I am planning to remove the housing and inspect but I'd like to find a replacement "o ring " or gasket before I pull it off. I've spent some time trying to find one but I cannot. Can someone provide some insight on this ? Is it a gasket or an "o ring" and where can I get one? This is not an HD housing. I like to resolve this leak this weekend.
Thanks!