Re: Towing with 2004 grand cherokee
You're going to need some form of weight distributing system. There are a bunch of different options and I would Google them to find what you want. Basically, it's a system that's going to keep the back end of the vehicle from sagging down like it does on a standard ball hitch.
Personally, I would say you are definitely pushing the limits of your Jeep with that trailer. You have a 4.0L Jeep w/out a towing package and I would question it's ability to stop and control that load.