I just purchased a '24 2500 Duramax and have about 1400 miles on it. I towed a cargo trailer yesterday(about 5500 lbs but a tall trailer) and while the truck pulled well I was disappointed in 2 things.
1. There is a noticeable vibration/shudder at around 1200 RPM when under load. Anyone else experience anything like that?
2. Also, I had gotten 19+MPH on the trip in to get the trailer but got around 9MPH coming back. That seems pretty low although I did have a stiff head/quarter wind for a good while.
Just curious if anyone has any thoughts.
Thanks!