GMC redefines the off-road space by introducing the all-new 2019 Sierra AT4. For the first time ever, the Sierra AT4 delivers a unique formula of authentic off-road capability and innovative technology paired with premium refinement and a bold appearance expected from GMC.
The Sierra AT4 has a unique look driven by dark exterior finishes and modern detailing. The front and rear bumpers and the grille surround are finished in body color, while the bold grille finished in black chrome set off by the C-shaped LED lighting signature. Additional accent details such as the LED fog lamp bezels and fender trim continue the use of black chrome, while a premium high-gloss black finish is applied to the window trim, mirror caps and skid plate. Touches of red complete the package.
The interior also carries AT4-specific darkened trim, including dark-tinted and textured aluminum finishes on the steering wheel, center stack and sill plates, as well as a unique Jet Black/Kalahari color accents in the seats and live stitching. Leather-appointed seating with embroidered AT4 badging on the headrests and all-weather floormats are standard.
Sierra AT4 Performance with three available engines
Sierra AT4 features new versions of the proven 6.2L and 5.3L V-8 engines along with all-new Duramax 3.0L inline-six turbo-diesel engine. The available 6.2L and 3.0L engines are paired with a 10-speed automatic transmission.
The 5.3L and 6.2L engines feature stop/start technology and new Dynamic Fuel Management that enables the engine to operate on one to eight cylinders, depending on demand, to optimize power and efficiency.
Authentic Off-road Capability including Rancho monotube shock absorbers
Sierra AT4 comes standard with a factory installed 2-inch suspension lift that provides additional ground clearance and four-wheel drive with a two-speed transfer case that includes low-range four-wheel-drive gearing for extremely tough conditions.
Sierra AT4 also includes standard off-road tuned Rancho monotube shock absorbers, a locking rear differential and Hill Descent Control, a driver assistance feature that leverages the anti-lock braking system to enable smooth, controlled descents on steep grades. The locking rear differential directs engine power equally to both rear wheels for the greatest traction on slippery or uneven terrain.
Traction Select System allows the driver to choose from preset drive modes that have been tailored for different terrain or weather conditions. Selecting one of these modes adjusts Sierra’s transmission shift points, throttle mapping and StabiliTrak to optimize performance for the situation at hand.
All-new ProGrade Trailering System with Trailering App offers a connected, comprehensive suite of trailering technology that brings more confidence to the towing experience than ever before in a Sierra.
Groundbreaking Cargo Box Capability and Materials
Debuting first on the 2019 Sierra Denali and SLT, the all-new Sierra AT4 also comes standard with the industry-first MultiPro Tailgate — the segment’s most innovative tailgate ever. The MultiPro Tailgate features six unique functions and positions, offering enhanced second-tier loading and load-stop solutions, a standing workstation mode and easier access to items in the box.
Later in the model year, the 2019 Sierra AT4 will offer an available GMC exclusive and industry-first carbon fiber box. It replaces the standard steel inner panels and floor with a lightweight, purpose-designed carbon fiber composite.
When it comes to the space and storage vital to truck customers, the 2019 Sierra AT4 delivers innovative solutions. The cargo boxes offer best-in-class cargo volume of 63 cubic feet (1,784 liters) on the short box and continues to be made of roll-formed, high-strength steel, yet a revised alloy offers 50 percent more strength than the current model.
Available GearOn accessory rails within the box allow for bike racks, kayak carriers and other accessories to be installed or adjusted quickly and easily. The rails’ integrated position makes cargo more accessible and frees up space in the rest of the box.
The rear seat backs open to reveal two 10-liter rectangular storage spaces large enough for tablets, tie-down cords or other personal accessories, as well as a large 24-liter storage tray under the second-row seat that can secure all your gear while you’re on the go. The GMC Sierra AT4 goes on sale this fall.
SHARE THIS ARTICLE