Only mid-sized pickup available with diesel power now gets factory steel bumpers, five skid plates, and front and rear locking differentials for off-road ability The Colorado ZR2 Bison joins Chevrolet ...

With new V-8 engines and bigger tires, Chevrolet's redesigned mud-lovin' trucks have finally debuted.

First, came the midsize Chevrolet Colorado ZR2. Then the Colorado ZR2 Bison. After that, Chevrolet added the full-size Silverado ZR2. And the Silverado ZR2 Bison. So it should come as no surprise that ...