Your 1500 is different-you are right, I hated my 2017 GMC 1500 6 speed transmission and only drove it 2100 miles in 2 1/2 years. They set that 1500 up for fuel economy and torque management and the only thing that would make it better is a programmer. With that said the new gas in the HD trucks with the 6 speed is a lot smoother. It could use a couple more gears. Ford has the 10 speed and Ram has the 8 speed. I drove the Ram and the trans was slick. Also with the new HD gas GM didn't install all that crappy fuel economy stuff like deactivation cylinders, torque management among others. I just love the small block 400 and V8 technology from 1955!!