Picked up a 2020 Silverado 3500HD on Saturday and made the drive north about 400 miles, put a few on it driving around the city. We don't buy these for fuel economy, averaged 15.1 over the first 500. These miles consisted of city driving and Alaskan highway(generally two lane) with hills anywhere from 1-7% grade, highway average 65 mph. All and all I'm happy with the purchase, transmission shifts at just the right time and very smooth, contrast to my old 6.0 with the 6 speed transmission that seemed to either gain or lose speed up hills. The engine was very good with a surplus of power and did not need to shift much on hills. I've read that it wasn't a set you in the back seat when the pedal is pressed, true but was a very smooth roll up to cruising speed. I can't wait for spring to throw the 5th wheel on the back and see what it will do with a load.
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