I have been towing with my sig pic truck from new in 07. I agree that payload will be the first thing you'll run out of. I've been up against my numbers every trip, 35', 8500 lbs and 1100 lb tongue weight, 16,000 GCVWR. The truck handles it fine as far as braking, handling and ride/stability. It's the power and gearing I run short on. Entrance ramps are a hope and pray strategy, and I'm always waiting for it to accelerate. Once up to speed it does pretty well around home's rolling hills and short mountains. Being a dinosaur 4 speed, I spend a lot of time between 4000-5000 RPMs, so the noise factor is a consideration as well. Nothing serious has happened inside the warranty or extended warranty period, so I'm glad I saved the money on that. I did have the cam phasers, chains and guides changed about 3 years ago and a cooling issue which was mainly my fault cost me some dough. Otherwise, rust is now the enemy after 13 years and 201,000 miles. Next time, It's super duty and 7.3 gas monster. I agree, it's going to depend on the specific truck whether you're comfortable with it or not.
