Ok everyone I did a trans fluid and filter change. It went well and the reason for doing this was the pan gasket was leaking. Sense I have changed that I have a large leak coming from the passenager side of the transmission and it is just above the pan about an inch or so up. What is this and why is fluid leaking out of it? It is round and of a different metal then what the transmission is made out of. I don't know what to do to fix this last night I am sure it leaked about 1/2 qt.