GM Developing New Silverado HD ZR2 And Sierra HD AT4X

Mar. 26, 2022 7:58 AM ET by Sebastian Cenizo Trucks / Comments

Watch out, Ford and Ram.

General Motors has been expanding its development of electric vehicles and recently teased its first all-electric Equinox, which followed the news that an all-electric Blazer is coming too. At the same time, we're looking forward to the GMC Hummer EV and the Silverado EV, but it'll be a while yet before GM gives up on combustion-powered vehicles altogether. In fact, it is working on some exciting new trucks that should have Ford and Ram worried. According to exclusive information obtained by Muscle Cars & Trucks, GM is currently developing a Chevrolet Silverado HD ZR2 and a GMC Sierra HD AT4X to take on the Ford Super Duty Tremor and Ram HD Power Wagon.

Chevrolet

GMC

Chevrolet

The new vehicles will allegedly arrive for the 2024 model year, so it'll be a long time yet before we can expect to see the new trucks in the metal. The current Silverado HD and Sierra HD have been on sale since 2020, so although new trims have been added as part of updates, the range may be more comprehensively updated before the ZR2 and AT4X are launched. With that said, we can expect some aspects of the vehicles to follow a certain recipe. Small front bumpers, skid plates, Multimatic DSSV dampers, locking differentials, larger tires, greater ground clearance, and a greater rear departure angle are all sure to be included.

CarBuzz

GMC

Chevrolet

The report goes on to state that the tire size of these heavy-duty trucks will be increased too, with the 33-inch Goodyear Wrangler Duratec AT tire to be replaced by a 35-inch Goodyear Wrangler Territory MT tire. Both new trucks are said to be arriving with the L8T 6.6-liter pushrod gasoline V8 and the L5P Duramax diesel V8 of the same capacity, and each will share similar suspension hardware with unique tuning. The AT4X will be the more comfortable of the two while the ZR2 will be a touch more focused on performance. Expect more luxury in the GMC and a higher price to boot, but with these trucks set to be among the last of the combustion era, getting one at MSRP is sure to be tricky. We'll report back once more information becomes available.