First-Ever Chevrolet Silverado HD ZR2 Debuts to Tow, Haul and Tackle the Trails

Photo: GM

Chevrolet unveils its big bad off-roader the 2024 Silverado HD ZR2. When Chevy fans hear ZR2, they know it means one thing–rugged. Elevating the Silverado HD’s off-road credentials to even further heights, the 2024 Silverado HD ZR2 Bison also debuts as part of the Chevy trucks family.

Chevrolet will offer three brand new off-road performance pickup trucks for off-road enthusiasts in  Colorado ZR2, Silverado 1500 ZR2 and the first-ever Silverado HD ZR2.

Both the HD ZR2 and HD ZR2 Bison bring race-proven technologies and enhanced off-road capability to the refreshed 2024 Silverado HD lineup, with the specialized ZR2 Bison featuring unique equipment from premium off-road aftermarket manufacturer American Expedition Vehicles, for those seeking the ultimate capability in their adventures.

Photo: GM

“The all-new Silverado HD ZR2 and HD ZR2 Bison provide the off-road performance our customers have come to expect from a ZR2, with the towing and payload capabilities our HD customers demand,” said Michael MacPhee, director of Chevrolet Trucks Marketing. “They also expand the Silverado HD lineup, offering more choices for customers to find the perfect truck for work and off-road adventure.”

Offered exclusively in the 2500 Crew Cab configuration — with the standard 6.6L gasoline engine or available 6.6L Duramax Turbo-Diesel — the Silverado HD ZR2 and HD ZR2 Bison leverage Chevrolet’s off-road racing success with a defined set of upgrades built from proven off-road prowess. Whether that’s crawling trails, tackling tough terrain or towing adventure toys on the weekend, the Silverado HD ZR2 and HD ZR2 Bison can handle it all.

The Silverado HD ZR2 does this without sacrificing on-road comfort or heavy-duty truck capability, embracing the same hallmarks that make the Silverado 1500 ZR2 a winning combination.

Photo: GM

As for capability, the max payload for the Silverado HD ZR2 is 3,397 pounds2 (gas engine), while the max trailering rating is an impressive 18,500 pounds3, when equipped with the available Duramax Turbo-Diesel to ensure owners don’t have to leave behind any part of their adventure – big or small – when hitting the trail.

“The Silverado HD ZR2 is for those who want it all: For when you need to haul equipment to the jobsite during the week, then the camper and family off the beaten path on the weekend,” said Sahar Nasif, program engineering manager, Silverado HD ZR2. “It’s for those who want their tow rig to be just as cool as the toys it’s hauling.”

The HD ZR2 is instantly recognizable with the ZR2 family’s front grille, which represents the expressive styling the ZR2 family of trucks values. Unique wheel opening moldings featuring integrated mud guards, ZR2 badging on the grille bar and a higher stance further strengthen HD ZR2’s image. Both trucks also wear the “flow-tie” emblem. The suspension is raised approximately 1.5 inches (38 mm), front and rear, compared to other Silverado HD 4WD models.

Its off-road-capable features and content also include:

  • 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.

HD ZR2 also includes a new Off-Road Mode, which incorporates learnings from the Colorado ZR2 and Silverado 1500 ZR2. When engaged, it adjusts various vehicle calibrations, such as the anti-lock brakes, traction control and stability control, to optimize their performance for off-road driving. In addition, Off-Road Mode alters throttle progression and transmission shifts, and the locking rear axle does not have a speed limitation.

Type: Crew Cab Standard Bed (4WD)

Type: 6.6L V-8 gasoline
Bore & Stroke (in. / mm):
4.06 x 3.86 / 103.25 x 98
Block Material:
Cast iron with nodular iron main caps
Cylinder Head Material:
Cast aluminum
Compression Ratio: 10.8:1
Valvetrain: Overhead-valve, two valves per cylinder, variable valve timing
Fuel Delivery: Direct fuel injection

(hp / kW @ rpm): 401 / 299 @ 5200 (SAE certified – gasoline)

Torque(lb.-ft. / Nm @ rpm): 464 / 629 @ 4000 (SAE certified – gasoline)

Type: Duramax 6.6L V-8 Turbo-Diesel

Bore & Stroke (in. / mm): 4.05 x 3.89 / 103 x 99

Block Material: Cast iron

Cylinder Head Material: Cast aluminum

Compression Ratio: 16.0:1

Valvetrain: Overhead-valve, four valves per cylinder

Fuel Delivery: Common-rail direct fuel injection

Horsepower (hp / kW @ rpm): 470 / 350 @ 2800 (per SAE J1349)

Torque (lb.-ft. / Nm @ rpm): 975 / 1322 @ 1600 (per SAE J1349)

Gear Ratios (:1): Allison®️ 10L1000 10-speed automatic

First: 4.54
Second: 2.87
Third: 2.06
Fourth: 1.72
Fifth: 1.48
Sixth: 1.26
Seventh: 1.00
Eighth: 0.85
Ninth: 0.69
Tenth: 0.63
Reverse: 4.54
Final Drive Ratio: 3.73 (6.6L gas)
3.42 (6.6L diesel)

Front Suspension: Short long arms independent front suspension with torsion bars

Rear Suspension: Semi-elliptic, two-stage, multi-lead springs

Steering Type: Hydraulic power-assisted recirculating ball

Brake Type: Hydraulic power-assisted Hydroboost brake booster, four-wheel disc brakes with ABS and Stabilitrak electronic stability assist
Brake Rotor Size (in. / mm): Front: 14 x 1.6 / 355 x 40
Rear: 14.1 x 1.3 / 360 x 34

Wheel Size: 18 x 9-in. aluminum
Tire Size: LT305/70R18 MT

Fuel Tank (gal. / L): 36 / 136 (gas and diesel)


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