What can I pull with a 6 cylinder Dodge Nitro?

According to the Dodge towing guide the Nitro's towing capacity is 2000-5000 pounds depending on equipment. Like was said previously it appears the Nitro is about the equivalent to a Jeep Liberty. So, depending on equipment her Nitro may be able to handle a little more than a small popup. I'd suggest doing a search here on Jeep Liberty towing to get more opinions on how these do as tow vehicles.