GMC has introduced the all-new Sierra AT4. Based on the 2019 Sierra, the AT4 is an off-road focused model which comes equipped with a 2-inch suspension lift, Rancho monotube shock absorbers and exclusive 18-inch alloy wheels with all-terrain tires. 

The truck has also comes standard with four-wheel drive, a locking rear differential and skid plates. Other off-road features include red recovery hooks, hill descent control and a traction select system which has preset drive modes that adjust the “transmission shift points, throttle mapping and StabiliTrak to optimize performance for the situation at hand.”


The designers installed body-color accents on the grille surround, door handles and bumpers. The truck has also black chrome accents and a MultiPro Tailgate which has six unique functions including a standing workstation mode and an egress mode which acts as a step and a seating position.

Interior changes are limited but the truck has two-tone leather seats with embroidered AT4 badging on the headrests. Drivers will also find contrast stitching, all-weather floor mats and “dark-tinted and textured aluminum finishes.”


An assortment of different options will be available including a color head-up display, a rear camera mirror and the GMC-exclusive CarbonPro bed. It is constructed out of a purpose-built carbon composite material which enables the bed to be 28 kg lighter than its steel counterpart while also providing “best-in-class dent, scratch and corrosion resistance.” Buyers should also opt for the 20-inch wheels as the standard 18-inchers look positively tiny.

Power comes from a 5.3-liter V8 engine which has a Dynamic Fuel Management system that enables it to operate on one to eight cylinders. Customers will also be able to order an optional 6.2-liter V8 engine or a 3.0-liter Duramax turbodiesel inline-six.


The 2019 GMC Sierra AT4 will go on sale this fall and pricing will be announced closer to launch.