I have been towing a travel trailer weighing about 2,200 lbs + about 400-500 lbs. of supplies and equipment with my '04 Unlimited with no problems. I have the 4.0 and automatic. I live in the Appalachian Mountains and have to drop it into 2nd gear to bring it up the hills but can do it well enough. Some of the guys on this web site recommended trying to hold it in 2nd at 3500 RPMs which I do. It will take me down to about 50 MPH on some of the step climbs, but that's okay. Hope this helps.