2019 GMC Sierra AT4 Off-Road Test Drive. 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 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 Global GMC. “It’s also the beginning for the AT4 brand, which will be seen on every vehicle in our lineup in the next two years.”
Authentic Off-road Capability
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 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.
The Sierra AT4 boasts innovative technologies that optimize capability and elevate driver confidence.
– 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.
– Segment-first Multi-Color Head-Up Display projects key, customizable vehicle data, including an off-road inclinometer, on the windshield in a 3×7-inch display. The off-road inclinometer shows the fore-and-aft tilt, front tire angle and left-and-right tilt.
– Surround Vision is available on Sierra AT4 and provides the driver with a bird’s-eye view through an overhead image on the infotainment screen. It can prove useful when slowly maneuvering in tight quarters, be it within a parking garage or out on a challenging trail.
– 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.
Sierra AT4 Performance
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.
The GMC Sierra AT4 goes on sale this fall.
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