Skip to main content
2020 GMC Sierra 2500 HD Denali

GMC's trucks continue to get bigger, brawnier, and more luxurious with the introduction of its 2020 Sierra Heavy Duty model range. The trucks will boast a number of new technologies that include a ProGrade Trailering system that has 15 available camera views including one that makes the trailer transparent so you can see right through it. It will also be the first in its segment to boast a massive 15-inch head-up display that gives you trailering information, vehicle speed, navigation info, and an inclinometer. 

For massive towing power, GMC will offer a Duramax 6.6L turbo-diesel engine that produces 445-hp and 910 lb-ft of torque. That's coupled with a 10-speed automatic transmission, which is a first in the heavy-duty truck segment. Towing capacity is rated at 30,000+ lbs, which is a huge increase over previous models. Gas engine options will be announced in the near future. 

Available in late summer, the truck will be available in Sierra HD, Sierra HD Denali, and Sierra HD AT4 trims.

Related Articles


GMC reveals its design-focused Sierra Elevation

The truck combines bold design and off-road utility.


GMC ups the luxury with the Sierra Denali Ultimate

The company unveils a new flagship luxury truck.


GMC announces an all-electric Sierra Denali

The truck will be built on GM's Ultium platform.