Built by General Motors under the GMC brand, the 2023 Sierra 1500 AT4X features a standard 3.0L Duramax diesel or available 6.2L V8. It includes a factory-installed Multimatic DSSV damper system, electronic locking front and rear differentials, and underbody skid plates. The AT4X sits 2 inches higher than the standard AT4 and offers a 4-inch lift kit option. Interior highlights include a 13.4-inch infotainment screen, 15-speaker Bose audio, and a ventilated ProGrade Trailering system. GMC’s MultiPro tailgate provides six functional positions for versatile worksite and outdoor use.
