The 2026 GMC Sierra 1500 AT4 is a rugged and capable off-road pickup that's ready to take on any adventure. With its powerful EcoTec3 6.2L V8 engine, 10-speed automatic transmission, and 4-wheel drive, this Sierra AT4 delivers impressive performance both on and off the pavement.- LPO, ALL-WEATHER FLOOR LINERS, 1ST AND 2ND ROWS (includes AT4 logo)- ACTIVE EXHAUST, DUAL, SPORT-MODE ENABLED- MOBILE SERVICE PLUS - 1 year of convenient mobile service, pick-up/delivery, and loaner vehicleInside, you'll find a premium Bose 7-speaker sound system, dual-zone automatic climate control, and a suite of advanced technology features including wireless Apple CarPlay/Android Auto, a Wi-Fi hotspot, and a navigation system. The spacious cabin offers heated and ventilated front seats, heated rear outboard seats, and a power driver's seat with memory.For enhanced off-road capability, the Sierra AT4 is equipped with an off-road suspension, an auto-locking rear differential, hill descent control, and recovery hooks. The spray-on bedliner and trailering package make this truck ready to haul your gear, while the suite of advanced safety features, including automatic emergency braking and lane keep assist, provide added peace of mind.Experience the perfect blend of rugged capability and premium comfort in the 2026 GMC Sierra 1500 AT4.This vehicle is equipped with the Preferred Equipment Group 4SB, which includes a trailering package, heated and ventilated front seats, a heated steering wheel, and more.