Fac­tory Fresh

2019 GMC Sierra AT4


GMC has dab­bled in off-road mod­els in the past, but the in­tro­duc­tion of the ’19 Sierra AT4 proves this com­pany is com­mit­ted to the dirty life­style. Based on the re­cently re­vealed ’19 Sierra 1500, the AT4 fea­tures a 2-inch sus­pen­sion lift, four-wheel drive with a two-speed trans­fer case, a lock­ing rear dif­fer­en­tial, am­ple skid­plat­ing, and cus­tom-tuned Ran­cho mono­tube shock ab­sorbers at all four cor­ners.

Off-road trac­tion is im­proved by 32-inch-di­am­e­ter Goodyear Du­raTrac off-road tires mounted on unique 18-inch wheels. Op­tional are 20-inch wheels, but those rollers come mounted on less ag­gres­sive all-ter­rain tires. The AT4 also in­cludes help­ful elec­tron­ics, such as hill-de­scent con­trol and GMC’s Trac­tion Se­lect Sys­tem.

A black chrome fin­ish on the fog­light bezels, fender sur­round, and grille in­sert adds to the truck’s sin­is­ter ex­te­rior styling. The bumpers, door han­dles, and grille shell are body col­ored, and a pair of ver­ti­cally mounted front tow hooks is painted red. The in­te­rior is spe­cific to the AT4 and falls be­tween SLT and De­nali grades,

mean­ing it’s up­scale and very well ap­pointed, with trim el­e­ments that add to the pickup’s youth­ful at­ti­tude. Seats are a unique mix of Jet Black and Kala­hari color ac­cents, with AT4 badg­ing em­broi­dered into the head­rests. Dark tinted and tex­tured alu­minum trim can be found on the steer­ing wheel, cen­ter stack, and sill plates.

Pow­er­ing the AT4 is an up­dated ver­sion of the com­pany’s leg­endary 5.3L V-8 en­gine, likely paired with an eight-speed au­to­matic gear­box. Op­tional are a new 6.2L V-8 or 3.0L I-6 Du­ra­max diesel, both mated to a 10-speed auto. De­tails about any of the ’19 pow­er­trains are scarce, so we’ll have to con­tinue wait­ing for power fig­ures.

Stan­dard on the AT4 is GMC’s new Mul­tiPro tail­gate. The Mul­tiPro tail­gate has six dif­fer­ent func­tions and po­si­tions, of­fer­ing sec­ond-tier load­ing, load-stop so­lu­tions, a bed step, and even a stand­ing work­sta­tion. GMC’s Car­bonPro car­bon-com­pos­ite pickup box will be available for the AT4 late in the model year, sav­ing weight with­out sac­ri­fic­ing strength, scuff re­sis­tance, or ap­pear­ance.

If it’s tech­nol­ogy you want, you don’t have to miss out just to have off-road per­for­mance. Available on the ’19 Sierra AT4 are a seg­ment-first, full-color, heads-up dis­play and rearview camera mir­ror. A 360-de­gree camera, ProGrade Trai­ler­ing, Side Blind Zone Alert, adap­tive cruise con­trol, and Front Pedes­trian Brak­ing are also available.

Over­all, we’re pretty ex­cited about the ’19 GMC Sierra AT4. Af­ter years of dip­ping a toe into the space, GMC fi­nally has a le­git­i­mate off-road–ori­ented ½-ton. Best of all, it’s a no-com­pro­mise blend of lux­ury, tech­nol­ogy, and off-road prow­ess. We’ll have to save final judg­ment un­til we get be­hind the wheel and ex­pe­ri­ence the AT4 for our­selves. And while the Ran­cho mono­tube shocks are cer­tainly an im­prove­ment, we re­ally wish this high-end off-roader were equipped with Mul­tiMatic’s DSSV dampers, found else­where on the Chevro­let Colorado ZR2. De­spite that one gripe, we love what GMC has done with the AT4 and feel it is a great ad­di­tion to its lineup.

The GMC Sierra AT4 takes its mod­ern styling from the all-new ’19 Sierra 1500, aug­mented with a 2-inch sus­pen­sion lift, more ag­gres­sive off-road tires, and a few new styling fea­tures.

Black leather with Kala­hari in­serts and con­trast stitch­ing set the AT4 apart from other Sierra 1500s. The AT4 also gets spe­cial em­broi­dery on the head­rests, all-weather floor mats, and dark-tinted alu­minum fin­ishes on the dash­board and steer­ing wheel.

The Sierra AT4’s front tow hooks and badg­ing are dipped in red for some added vis­ual punch. The look helps those ac­cents stand out on the all-black truck GMC showed at the 2018 New York In­ter­na­tional Auto Show, giv­ing the AT4 some ex­tra vis­ual ag­gres­sion.

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