September 21, 2018 VOTW: ZR2 Diesel Share Primal Outdoors took a week to beat the crap out of a 2018 Chevy Colorado ZR2 diesel off-road, and you should check it out. Subscribe to our weekly newsletter colorado zr2 diesel, diesel zr2, kibbetech duramax, kibbetech zr2, overland zr2, Primal Outdoors, primal outdoors youtube, running4tacos, running4tacos.com, zr2 diesel