Mine did not either, but I would never trust the bumper and bought a hitch. I tow a 1000 lb trailer and 2 ATV's often (total 2K lbs with gear, etc.) and it does it okay. Leave it out of OD to save the tranny from "hunting" for gears and it'll cruise at 65 NP. 70 if you really are in a hurry

MPG gets bad (usually 14 for me), but nothing horrible. You can put it in OD if you are on real flat ground and the tranny is not hunting though.
Also I am going to get a trans temp gauge and a big trans cooler before I get tom many more miles on it. Mine is a V6, I would hate towing with the 4cyl and Auto. Actually I wouldn't even consider it lol