Hi all, I recently purchased an 05 Silverado 3500 crewcab longbox, I absolutely love the truck and the power but theres 2 things I've noticed. The first is once you hit around 60 - 70 mph you can hear / feel a vibration which sounds like its coming from the back of the truck, though I can't tell where for sure. Once you are over 70 mph its barely noticable though, and under 60 its not there at all. It's much more noticeable too pulling a trailer as opposed to driving around unloaded.

The other thing I've noticed is since it's gotten cold outside the transmission fluid cooler line has started leaking transmission fluid. I can see where it's leaking around the metal piece on the hose. Has anyone had this problem and repaired it on their own? How difficult of a job and how long to replace the hose?

Thanks,

Brian