Auto123 test drove Chevrolet’s toughest ZR2 off-road trucks – the Colorado ZR2 Bison and the Silverado 1500 ZR2 -- at the new ...

Last year at SEMA, we saw a fairly radical Chevy Colorado ZR2 concept ... mounted on the passenger-side A-pillar. While the concept was based on the Crew Cab version of the ZR2, this prototype ...