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GMC Launches Off-road AT4 Brand With Sierra

Nanjing Huiguang Lighting Co.,Ltd | Updated: Mar 27, 2018

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NEW YORK -- GMC is launching a new off-road brand -- AT4 -- with the redesigned Sierra pickup.


Just as the Denali subbrand has helped GMC lure more upscale buyers, the brand is counting on the new AT4 subbrand to draw off-road enthusiasts who might not consider GMC or defect to another light-truck brand, notably Jeep.


GMC on Monday introduced the 2019 Sierra AT4, which features darker exterior elements of the redesigned pickup with several off-road features. They include a 2-inch factory-installed suspension lift, standard four-wheel drive with a two-speed transfer case, locking rear differential and skid plates.


"The 2019 Sierra AT4 is designed for the customer who wants an elevated presence on the road and the capability to venture off life's beaten path," said Duncan Aldred, vice president of GMC.


Over the next two years, Aldred said, each vehicle in GMC's lineup will include an AT4 model.


General Motors, since discontinuing Hummer in 2010, has hinted at plans to increase its lineup of off-road-capable vehicles to better position its brands against Jeep. It has launched Z71 and ZR2 variants of the Chevy Colorado and recently unveiled new Trialboss versions of the 2019 Chevrolet Silverado.


Like the Denali subbrand, the AT4 lineup is expected to be priced higher than standard GMC models and generate fatter profits.



The Sierra AT4 -- available in the fall -- comes standard with a 5.3-liter V-8 engine with an eight-speed automatic transmission. As with the Silverado, available 6.2-liter V-8 and 3.0-liter inline-six turbodiesel engines will be paired with a 10-speed automatic transmission.


The V-8 engines feature stop-start technology and GM's new Dynamic Fuel Management that enables the engine to operate on one to eight cylinders, depending on demand, to optimize power and efficiency.


Other standard AT4 features include off-road-tuned Rancho monotube shock absorbers, a locking rear differential and Hill Descent Control, a driver-assistance feature that leverages the antilock braking system to enable smooth, controlled descents on steep grades without the driver having to touch the brake pedal under certain conditions.


The locking rear differential directs engine power equally to both rear wheels for the greatest traction on slippery or uneven terrain. Eighteen-inch wheels with all-terrain tires are standard. Mud terrain-rated Goodyear Wrangler DuraTrac tires or 20-inch wheels with all-terrain tires also will be available.


Like the Sierra SLT and Denali models, which GM unveiled this month in Detroit, the AT4 features a larger, more durable cargo box and six-way MultiPro tailgate.


Later in the model year, a carbon-fiber composite bed that GM calls the CarbonPro will be available. It replaces the standard steel inner panels and floor with a lightweight carbon-fiber composite that is 62 pounds lighter than the steel version.


GM has not released pricing or performance specifications for the Sierra, which will be built at plants in Fort Wayne, Ind., and Silao, Mexico.


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