Discover the latest lineup of new GMC trucks and SUVs at Red Rock GMC. From the rugged Sierra to the versatile Acadia and luxurious Yukon, you'll find Professional Grade capability, advanced technology, and exceptional comfort in every model. Our team is here to help you find the right GMC with a straightforward, hassle-free buying experience.

- Duramax 6.6L V8 Turbodiesel with 470 hp and 975 lb-ft of torque
- 10-Speed Automatic transmission with 4WD
- Gooseneck/5th Wheel Prep Package with hitch platform
- Technology Package with Rear Camera Mirror and 15" Head-Up Display
- AT4 Preferred Package including universal home remote and power rear window
- Off-Road Suspension with 2-Speed Active Transfer Case
- HD Surround Vision and Trailer Side Blind Zone Alert
- Multicolor 15" Head-Up Display with advanced driver information
- Bose Premium 7-Speaker Sound System with SiriusXM 360L
- Heated and ventilated leather front seats with 10-way power adjustment
- Wireless charging and Apple CarPlay/Android Auto compatibility
- Automatic Emergency Braking with Front Pedestrian Braking
- OnStar One service for three years
- 220-Amp Alternator and Engine Block Heater

This 2026 Sierra 2500HD AT4 arrives in striking white exterior paint, ready to handle demanding work and weekend adventures. The Duramax diesel engine delivers impressive torque for towing and hauling, while the advanced transfer case and off-road suspension provide capability on varied terrain. The truck features a spray-on bedliner with GMC logo and a black sport step for convenience and style.

Professional-grade technology enhances your driving experience through the intuitive infotainment system with wireless phone projection and multiple USB charging ports. The rear camera mirror and surround vision system provide confidence during maneuvers, while trailer-specific features including camera provisions and side blind zone alert make towing management straightforward. Steering wheel audio controls keep your focus on the road.

Inside the cab, you'll find comfort designed for long days. Heated and ventilated front seats with power lumbar support, heated steering wheel, and automatic climate control create an inviting environment regardless of season. The overhead console and floor-mounted center console provide organized storage for your essentials.

Safety systems work quietly in the background to protect you and your passengers. Automatic emergency braking, forward collision alert, rear cross traffic alert, and ultrasonic park assist represent the comprehensive approach to modern truck safety. Electronic stability control and hill descent control provide stability in challenging conditions.

The AT4 Preferred Package adds thoughtful amenities including a universal home remote and illuminated entry lighting for practical daily convenience. Whether you're managing a job site, towing a fifth wheel, or simply commuting with confidence, this Sierra 2500HD AT4 delivers the Professional Grade performance and features GMC owners expect.

We invite you to visit our showroom to experience this capable truck firsthand. Our team is prepared to answer your questions and discuss how this Sierra 2500HD AT4 fits your needs and lifestyle.

Select Shield includes a 3-month or 3,000-mile limited warranty on select vehicles, valid in all 50 states. New vehicles receive coverage beginning after the manufacturer's basic warranty ends. Excludes as-is, tax, tow, salvage, or lemon law vehicles. Vehicle information, options, and features may vary. Verify all details with the dealer. See dealer for complete details.