The off-road specialists at AEV (American Expedition Vehicles) have taken the steel rear bumper from the Chevy Silverado 1500 ZR2 Bison and the GMC Sierra 1500 AT4X AEV Edition and made it ...
Before Sierra became a full-size truck model of its own in 1988, the name was used to describe an available trim on other GMC trucks ... gave the 2012 Sierra 1500 rear-wheel drive model a 4 ...