Can the new 2020 GMC Sierra HD Be a Denali and AT4 Off-Road at the Same Time? (Spied)

2020 gmc sierra 2500 hd denali at4 all-terrain
2020 GMC Sierra HD 2500 Denali

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. ┬áThere 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.