I am trying to install the HD cooling transmission cooler on our 08 expy, and it has some sort of compression fitting that I can't figure out how to get off. It is sort of like the fuel filter or air conditioning fittings, but the tool for that application won't work. What I need to do is unplug the original lines in order to plug the new ones in. Is this a special tool that I need, or does anyone have an idea of how to get them loose?

Of course then I have another problem, which is that the transmission doesn't have a dipstick. So how do I get more fluid in it? Thanks.

Rod