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Chevrolet Debuts The Silverado ZR2 Bison And New Duramax Diesel Engine

HotCars 8/16/2022 Dave Goldberg
© Provided by HotCars

A never-ending battle among pickup manufacturers continues as Chevrolet releases its latest competitor. A YouTube video from The Fast Lane Truck highlights these efforts with the launch of the Silverado ZR2 Bison and a reworked Duramax diesel engine. While special edition trims help target specific buyers, the release of the new powerplant broadens the Silverado’s appeal. Now that Ford is without a diesel in its half-ton lineup, the truck wars just got a bit more interesting.

RELATED: 2022 Chevrolet Colorado ZR2 Bison Review: Immense Athletic Ability

Borrowing From The Chevy Colorado ZR2

Replay Video

Chevy’s endeavors to upgrade the already top-tier Silverado ZR2 stem from the success of the 2019 Colorado ZR2 Bison, which the brand developed with American Expedition Vehicles (AEV). As Chevrolet tells it, the Bison version of its mid-sized truck became a bestseller among Colorado ZR2 variants.


The automaker again turned to AEV to expand the Silverado ZR2’s capabilities. “The Chevrolet Silverado ZR2 Bison is the ultimate half-ton truck for backcountry adventures,” said AEV CEO and Founder Dave Harriton in a Chevy news release.

RELATED: 10 Things We Now Know About The 2022 Chevrolet Silverado ZR2

Unique Silverado ZR2 Bison Capabilities

AEV and Chevrolet's engineers improved the Bison’s approach and departure angles for smoother off-roading travels while keeping ground clearance at 11.2 inches (the same as the base ZR2). A series of hardened-steel skid plates, reportedly three-and-a-half times stronger than traditional steel plates, provides additional underbody protection for the Bison.

Other features include exclusive AEV-designed wheels, 33-inch Goodyear tires, unique front and rear bumpers, suspension upgrades, front and rear e-lockers, and a one-pedal rock crawling mode. Power comes from the same arrangement used in the standard Silverado ZR2, a 6.2-liter V8 making 420 horsepower and 460 lb-ft of torque. A ten-speed automatic gearbox is standard. Availability for the ZR2 Bison kicks in with the 2023 model year for the Silverado.

Duramax To The Max

TFL Truck also reveals that a revamped Duramax diesel engine, first teased earlier this year, will make its way in the 2023 Silverado. The turbocharged 3.0-liter inline six gets a substantial boost in the output department. Power rises to 305 hp, a 10% boost from the 277 figure in the current generation, and torque jumps from 460 lb-ft to 495 lb-ft, a 7.6% rise.

According to Chevrolet, the second-generation Duramax benefits from new steel pistons, a returned turbo compressor, revised fuel injectors, and better temperature control. Now using the ZL0 order code, the new powerplant will be available on many Silverado trims including the Custom Trail Boss, LT, RST, LT Trail Boss, LTZ, and High Country. The ZR2 is not on the list, however.

Sources: YouTube/TFL Truck, Chevrolet


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