Chevy Colorado ZR2 Bison: Factory-Engineered Off-Road Performance for Construction Pros

When construction crews need to reach remote jobsites across harsh terrain, the right vehicle can mean the difference between staying on schedule and getting stuck before the workday begins. The 2019 Chevrolet Colorado ZR2 Bison, born from a collaboration between Chevy and American Expedition Vehicles (AEV), represents a factory-built solution for professionals who face landscape conditions that would stop standard trucks cold. As one test drive through Arizona’s rugged backcountry demonstrated, this mid-size pickup was purpose-built to take on terrain that resembles a moonscape. For contractors operating in similarly demanding environments, the lessons from Sweeping the Seasons in Arizona Contract Sweeping Strategies complement vehicle selection when planning desert operations where dust, sand, and rocky terrain present daily logistical hurdles.

The AEV Collaboration: Engineering Beyond Factory Standards

The ZR2 Bison is not simply a trim package with stickers and upgraded wheels. It represents Chevrolet’s first direct collaboration with AEV, a manufacturer known for building severe-duty off-road equipment for military and commercial applications. This partnership brought genuine off-road engineering to the factory floor, resulting in a mid-size pickup that ships with hardware most owners would otherwise need to source from the aftermarket, often voiding portions of the factory warranty in the process.

Boron Steel Underbody Protection

One of the defining features of the Bison package is the five-piece skid plate system constructed from hot-stamped Boron steel, one of the hardest materials used in automotive armor. Boron steel is typically found in military vehicle applications because of its ability to resist deformation under extreme impact loads. These skid plates protect the following critical undercarriage components:

• Engine oil pan, preventing catastrophic oil loss on rock strikes
• Fuel tank, shielding against punctures that could strand a crew in remote locations
• Transfer case, guarding the driveline component that distributes power to all four wheels
• Front locking differential, protecting the mechanism that enables maximum front-wheel traction
• Rear locking differential, ensuring the rear axle remains operational after hard impacts

During the Arizona trail evaluation documented by PickupTrucks.com, these skid plates produced frequent clangs and scrapes as the truck passed over rocks taller than the Bison’s ride height. The Boron steel absorbed impacts that would have caused significant damage to a standard pickup’s undercarriage, allowing the vehicle to continue without mechanical interruption. For a construction crew miles from the nearest paved road, this protection translates directly to reduced downtime and fewer emergency repairs.

AEV Bumper Systems and Recovery Hardware

AEV designed stamped steel front and rear bumpers that go far beyond appearance upgrades. The front bumper includes integrated winch provisions, allowing crew members to mount a recovery winch without fabricating custom brackets. Standard fog lights are integrated into the front bumper design for early morning or late evening jobsite access. The rear bumper incorporates dedicated recovery points for extraction situations when the truck becomes stuck or needs to pull another vehicle free.

These bumpers provide real, practical utility for construction crews who may need to self-recover or assist other vehicles on difficult jobsites. The recovery points eliminate the need for aftermarket tow hooks that often require frame drilling, and the winch provision means a winch can be added without voiding the factory warranty.

Drivetrain and Suspension: Purpose-Built for Severe Terrain

The ZR2 Bison duplicates the full equipment roster of the standard Colorado ZR2, which already represented Chevrolet’s most capable off-road chassis. The Bison package adds durability upgrades and armor without removing any of the ZR2’s mechanical advantages, creating a vehicle that is both more capable and more protected than its already impressive foundation.

Multimatic DSSV Damper Technology

The suspension system uses Multimatic Dynamic Suspensions Spool Valve (DSSV) dampers, a technology derived directly from motorsport applications including Formula 1 and endurance racing. These dampers use precision-machined spool valves instead of conventional shim stacks, providing consistent damping force across a significantly wider range of operating temperatures and suspension frequencies. For construction professionals, this means predictable handling whether the truck is empty, loaded with materials, or traversing rocky creek beds with a full crew cab.

The 45-minute trail drive leading to the Arizona moonscape demonstrated how effectively these dampers control body motion over repetitive impacts. Unlike conventional off-road shocks that lose damping effectiveness as they heat up during extended rough-terrain driving, the DSSV dampers maintained consistent control throughout the entire test route.

Locking Differentials Front and Rear

The Bison comes with electronically lockable front and rear differentials, a feature that remains exclusive among mid-size pickup trucks. When engaged, these lockers force both wheels on each axle to spin at the same speed, eliminating the traction loss that occurs when one wheel loses grip and spins freely. The Arizona test route included a 100-foot-long rubble-strewn wash filled with high, sharp rocks and boulders that would challenge anyone navigating on foot. The test drivers reported that only the rear differential lock was needed to navigate through the most difficult section, a testament to the available traction from the chassis and tire combination.

Powertrain Specifications and Performance

The 3.6L V6 provides adequate power for low-speed crawling, though test drivers noted that throttle response in Off-Road mode did not always correlate perfectly with pedal input. Engaging 4-Low on the transfer case resolved this issue, allowing the engine to deliver smooth, manageable power for technical rock navigation at crawl speeds. The 31-inch Goodyear Wrangler Duratrac tires completed the traction picture, with aggressive tread blocks that bit into loose rock surfaces and maintained forward momentum.

Real-World Testing: The Arizona Moonscape

The ForConstructionPros.com source article, originally reported by PickupTrucks.com, documented a 45-minute trail drive designed to evaluate how the Colorado’s off-road dampers handle terrain capable of halting any less-capable vehicle. The outbound drive traversed progressively more difficult trails that filtered out standard pickups and crossover SUVs, culminating at a landscape best described as a moonscape. This area featured extreme geological roughness, with no obvious visual path forward through the obstacle.

Traction and Tire Performance

The 31-inch Goodyear Wrangler Duratrac tires mounted on Bison-exclusive 17-inch wheels delivered what drivers described as astonishing grip. These tires represent a significant upgrade over standard all-terrain rubber, with aggressive tread patterns designed to bite into loose rock and maintain contact patch on uneven, inclined surfaces. Combined with the electronically locking differentials and the widened track width, the Bison maintained controlled forward momentum through sections where a stock SUV or standard pickup would have been stopped entirely.

Off-Road Driving Modes

The ZR2 Bison includes a comprehensive suite of off-road driving aids accessible through the vehicle’s drive mode selector. These systems work together to optimize vehicle behavior for extreme terrain:

1. Off-Road Mode adjusts throttle mapping, transmission shift points, and traction control calibration for low-speed crawling over uneven surfaces
2. Hill Descent Control maintains set speeds on steep downgrades without requiring brake pedal application, allowing the driver to focus on steering through obstacles
3. Auto-Locking Rear Differential engages automatically in low-traction situations when the manual lockers are not engaged, providing seamless traction management on moderately difficult terrain
4. 4-Low Transfer Case Setting provides maximum torque multiplication for technical rock crawling, steep ascents, and slow-speed navigation through extreme obstacles

During the Arizona evaluation, the combination of Off-Road mode and 4-Low allowed the Bison to crawl over every obstacle with minimal fuss. The driver reported that skid plate impacts were frequent and loud, but the Boron steel armor absorbed every strike without transferring damaging force to the components underneath.

Practical Considerations for Construction Fleets

While the ZR2 Bison was developed with recreational off-road enthusiasts in mind, its feature set has direct applications in the construction industry. Jobsite access remains one of the most frequently overlooked factors in project planning and scheduling. A vehicle capable of reaching remote locations under its own power can eliminate the need for dedicated site access improvements on certain projects, saving both time and capital that would otherwise be spent on temporary road construction.

Fleet Management and Warranty Advantages

The Bison is backed by a full factory limited warranty, which fundamentally differentiates it from aftermarket-modified trucks that may void portions of the vehicle’s original warranty coverage. For fleet managers, this factory backing simplifies procurement, reduces liability exposure in the event of component failure, and streamlines maintenance scheduling. The vehicle can be ordered through standard Chevrolet commercial vehicle channels and serviced at any dealership without requiring specialized aftermarket parts knowledge.

When a crew truck needs repairs, downtime costs money. A factory-built vehicle that can be serviced at any dealership eliminates the logistical challenge of finding a shop qualified to work on heavily modified equipment. This single factor can make the Bison a more practical choice for fleet applications than building an equivalent vehicle through aftermarket modifications.

Available AEV Snorkel for Dusty Environments

AEV offers a snorkel accessory compatible with all Colorado pickup variants, designed for improved air filtration on dusty trails. For construction applications in arid regions such as the Arizona desert where the Bison was tested, this accessory can extend air filter service life and reduce engine wear when operating in high-particulate environments. The snorkel is available through AEV and can be dealer-installed to maintain warranty coverage.

Feature Comparison: Bison Versus Standard Work Truck

For construction teams working where terrain dictates access feasibility, the ZR2 Bison offers a compelling balance of capability and fleet practicality. Articles such as Scott Young Takes the Helm At Conexpo Con highlight how the industry evolves toward more specialized solutions. Innovations in materials science such as those in High Temperature Concrete Takes Flight Engineering Durable Pavements demonstrate how specialized engineering transforms what construction teams can accomplish. Even finishing details, as discussed in Texture Takes Center Stage 2026 Tile Trends Report, reflect the industry’s broader movement toward purpose-engineered products that perform under real-world conditions.

The 2019 Colorado ZR2 Bison went on sale in January 2019, bringing AEV’s severe-duty engineering to a factory-built platform that requires no additional modification for serious off-road work. For construction professionals whose jobsites extend beyond paved roads, it represents a tool that arrives ready to work from the moment it leaves the dealership.