I have a 2020 GMC SLT 4x4 with the 3.0 Duramax. Bought Oct 29 and driven only in the cold Canadian fall/winter weather. I have driven mostly diesel vehicles over the last 20 years, but the ride was getting too harsh in the 2500 series. This is a pleasant to exceptional ride and handling vehicle. It starts very well in the cold, as low as -25 Celsius (-13F)without being plugged in. I have 4000Klm so far and economy from day one averages 11.1 L/100KM (22.1 miles to US gal.) Best 100 KLM is 8.3L/100KM (28.3 miles to US gal)
This is the best truck I have had in my time driving. I recommend it be considered by most everyone needing full size towing, comfort and economy.
