2026 GMC Sierra AT4X

Ready for Montana roads, this 2026 GMC Sierra 1500 AT4X 4WD with the rugged 3.0L Turbo-Diesel inline-6 delivers premium capability and efficiency. Finished in a durable exterior with the AT4X off-road package, this GMC Sierra combines advanced suspension, off-road-tuned shocks, and skid protection to handle gravel, snow, and backcountry trails around Sidney, MT. Inside, leather-trimmed seating, heated and ventilated front seats, and a driver-focused cockpit with a large infotainment touchscreen keep comfort and connectivity on long hauls.

Under the hood the 3.0L diesel provides strong low-end torque for towing and passing, paired with a smooth automatic transmission for confident highway and trail performance. Safety tech includes adaptive cruise control, blind-spot monitoring, lane-keeping assist, and a 360-degree camera system to make every drive safer and more relaxed.

This GMC Sierra 1500 AT4X is competitively priced — we’re offering the best price in the area for this model. Located in Sidney, MT, it’s ready for immediate test drives and local delivery. Don’t miss a chance to own one of the most capable half-ton trucks with diesel efficiency and true off-road readiness. Contact us today to schedule a viewing or to get a personalized offer.