I got a 2020 Sierra 1500 AT4 CarbonPro with Duramax 3.0L inline 6 back in Feb. It worked out to be a good deal at the time, although that was before the current state of the economy. Oh how much has changed in a few weeks.
Anyway, I’ve been meaning to write a little review here and answer some questions. What would you like to know about the new GMC Sierra 1500 AT4 CarbonPro Duramax? How can the name be just a little longer? The CarbonPro has the carbon fiber composite bed, which should still be intact long after the truck is dead. The new Duramax 3.0 inline 6 is very good paired with the 10-speed auto. A new engine is a little scary, and the new diesel emissions equipment is also a bit worrisome but it has a 100k mile powertrain warranty.
The best MPG I’ve gotten is 30.7 mpg over 50 miles according to the onboard computer. I have not towed anything with it yet but reports are it does pretty well towing too. The mini-Max 3.0 diesel makes 460 ft-lbs of torque and 1250rpm, the same torque as the 6.2 V8 but at a lower RPM. It feels really strong at low speeds, It does run out of breath at 3500 or so, but the 10-speed trans is a good match and shifts fast to keep the engine in the power band.
Overall I’m really impressed with the truck. The engine is very smooth and quiet. At idle in the cab it is really hard to tell it’s running. The trans shifts really well and it responsive.
I don’t have any real complaints yet. Maybe the adaptive cruise logic could be better - it seems slow to pickup speed once it has a clear path. I have had a couple times where collision alert flashed on the HUD and there was nothing in front of me. I think it picked up some shadows or glare on the camera.