Take a look at these images of the 2020 GMC Sierra HD prototype truck caught testing in public. We can immediately see the GMC-specific LED headlight signature and the luxurious Denali-style grille. However, we also get a close look at the rear of the truck, which brings up question – is this an off-road version of the luxurious GMC Sierra HD Denali? Could there be a Denali AT4 or a Denali All Terrain model?
This prototype is a crew cab with the new towing mirrors, although the mirror-mounted lights are covered by tape. On the side, there are still the side steps and the new bed-step that the Sierra shares with the new Chevy Silverado HD.
In the back, the big turbo-diesel exhaust pipe is clearly visible. Chevrolet has said the latest V8 Duramax will have a rating of 910 lb-ft of torque and be mated to a new 10-speed automatic transmission. Will the GMC Sierra get the same torque rating and transmission? We will have to wait and see.
Why ask all the off-road model questions? It’s because Rancho off-road shocks are clearly visible on the rear axle. GMC and Chevrolet have been using Rancho shocks on their off-road packages for several years. This is why we are thinking that this prototype may combine the luxurious and popular Denali trim with the All Terrain (or new AT4) trim. There is one caveat. This prototype does not have very aggressive off-road tires.
We also get a unique look at the front LED signature and the blinker lights. Check it out!
Here is a detailed look at the 2020 Chevy Silverado HD, the brother truck to the upcoming GMC Sierra HD.