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2024 Chevy Silverado HD ZR2, Bison ZR2 – 5 things you need to know


Chevrolet is adding to its roster of factory off-road trucks, and the 2024 Chevy Silverado HD ZR2 takes the 2500 to places it hasn’t gone before.

With the HD ZR2, there are now a total of three ZR2 models for the brand. These trucks include the Colorado ZR2, Silverado ZR2 and now the HD ZR2. Each adds much of the same hardware and exclusive styling, and these changes allow them to stand out on the sales lot as well as go over difficult terrain with barely breaking a sweat.

Plus, there will be a Bison version from American Expedition Vehicles.

Equipment and off-road mode debut

This new Chevy HD ZR2 will be no slouch on the trail with additional capability thanks to new equipment and a new drive mode.

This equipment includes:

  • Specific front upper and lower control arms and specific steering knuckles
  • Multimatic DSSV Dampers
  • Larger steel transfer case skid plate and front aluminum skid plate
  • Rear e-locker
  • 35-inch Goodyear Wrangler Territory MT tires mounted on 18 x 9-inch aluminum wheels

Then, there is the new Off-Road mode, which adjusts various vehicle calibrations for the terrain. For example, it adjusts the anti-lock brakes, traction control and stability control. Plus, it alters the throttle progression and transmission shifts to avoid spinning out or hunting for gears. The locking rear axle is also engaged in this mode, and there is no speed limitation.

Also, ground clearance, approach, break over and departure angle have improved and are as follows:

Ground Clearance
(in. / mm):11.6 / 295 (ZR2)
11.8 / 299 (ZR2 Bison)

Approach Angle (deg.): 32.5 (ZR2)
29.8 (ZR2 Bison)

Departure Angle (deg.): 25.7 (ZR2 & ZR2 Bison)

Breakover Angle (deg.): 21.2 (ZR2)
22.6 (ZR2 Bison)

Cab and engine choices

For the HD ZR2, it will be offered in the 2500 model with a crew-cab, standard-bed configuration only. This means no 3500, extended cab or long-bed option.

Powering the truck will be either the 6.6-liter V-8 gasoline engine or the optional 6.6-liter V-8 Duramax Turbo-Diesel. The Duramax diesel produces 975 pound-feet of torque at just 1,600 RPMS along with 470 horsepower. For the base 6.6-liter gas engine, it produces 401 horsepower and 464 pound-feet of torque with max torque coming at 4,000 RPMs.

Both are mated to a 10-speed automatic transmission. The 6.6-liter gas has a 3.73 rear axle ratio while the 6.6-liter Duramax diesel has a 3.42 rear axle ratio.

2024 Chevy Silverado HD ZR2 styling

On the exterior, the HD ZR2 stands out as different from stock models.

First, it has the same ZR2 grille the Silverado and Colorado use. It also has unique wheel opening moldings featuring integrated mud guards, ZR2 badging on the grille bar and a higher stance with the suspension raised 1.5 inches, front and rear. Both the ZR2 and ZR2 Bison have the “flow-tie” emblem design allowing air flow to go through the logo.

On the inside, the HD ZR2 and ZR2 Bison feature the new 2024 Silverado HD redesigned interior. This interior has dark trim accents with Jet Black and Graystone leather-appointed surfaces making it simple to clean off trail dust. They also have the 13.4-inch diagonal infotainment screen with Google’s Android Automotive operating software. The driver gets a 12.3-inch diagonal configurable dash along with an available 15-inch heads-up display, which includes an off-road inclinometer.

Finally, it comes with the GM HD Surround Vision which uses a variety of cameras to create an overhead image of the area around the truck. This is pretty handy when trying to avoid or specifically wanting to climb over rocks without using a spotter.

HD ZR2 Bison raises the truck to another level

The HD ZR2 Bison is yet another collaboration between GM and the AEV team. Prior collaborations have brought a Colorado ZR2 Bison and Silverado 1500 ZR2 Bison to the market. Like the Colorado and the Silverado, the HD ZR2 Bison adds a variety of upgrades and styling changes.

First, there are exclusive gloss black, 18-inch AEV wheels, new stamped-steel front bumper with integrated recovery points and a winch provision. Next, this package adds stamped-steel cut rear bumper with recovery points, stamped steel underbody skid plates, steering rack, exhaust and transfer case. There are Bison exterior badges and the AEV logo on the front-seat head restraints to further help it stand out versus the HD ZR2.

Chevy says production of the 2024 Chevrolet Silverado HD ZR2 and ZR2 Bison begins later this summer, at General Motors’ Flint Assembly plant in Michigan. Pricing will be announced closer to the start of production.

Payload and towing

The HD ZR2 is still a 2500 truck and has some of the towing capability you’d expect. Starting with hauling things, the maximum payload rating is 3,397 pounds for the gas engine with the Duramax diesel not far behind at 3,193 pounds.

For towing, Duramax diesel equipped trucks will be rated at 18,500 pounds while the gas returns 16,000 pounds for conventional trailers. When using a fifth-wheel or gooseneck setup, the max towing for the diesel is 18,100 pounds and the gas is 18,070 pounds.

For the HD ZR2 Bison, maximum towing and payload drops by a few hundred pounds when compared to the HD ZR2.

The bottom line

The world of off-road and overlanding has boomed in recent years with more stock factory models coming equipped for these adventures than ever before. While critics will point out the lack of a front e-locker, a standard winch or a disconnecting front sway bar for more ground clearance that other rivals offer, the Chevy Silverado HD ZR2 should be plenty for most consumers.

Tim Esterdahl

Automotive Journalist Tim Esterdahl has been a lover of trucks and SUVs for years. He has covered the industry since 2011 and has pieces in many national magazines and newspapers. In his spare time, he is often found tinkering on his '62 C10 pickup, playing golf, going hunting and hanging out with his wife and kids in Nebraska.

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1 Comment

  1. Gene April 13, 2023

    But can you put in a slide in camper? If this rig is made for overlanding,t needs to be able to carry a camper.


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