Thank you guys I appreciate it. We do have 4.10 gear and a 2013 2500hd. It says 13900 tow rating but truck dealer say 16900. We do this all the time. We had a dakota and bought a 30 ft tt . Towed ok but whute knuckle. We bought a tacoma and bought 34 ft tt. Towed it but talk about white knuckle. We bought tge one we have now with a chevy 1/2 ton. Towed fine but really worked truck. Now we have hd2500 and we are maxing it out. Thank god I put 70k a year minimum on my trucks and trade every other year or less.