2026 GMC Sierra 2500

Meet the 2026 GMC Sierra 2500HD AT4, a powerful crew cab built for serious work and adventure. This white beauty with jet black and kalahari accents leather interior combines rugged capability with refined comfort, powered by a 6.6L V8 engine and 10-speed automatic transmission to deliver dependable 4WD performance. Features Include: - Upfitter Switch Kit (5) - Technology Package - Heavy Duty Front Spring/Camper Package - AT4 Preferred Package - Body Color Wheel Arch Moldings - Hitch Package with Gooseneck/5th Wheel Prep - Off-Road High Clearance Steps - Heated and Cooled Leather Seats - Premium GMC Infotainment System with SiriusXM 360L The AT4's premium appointments include a Bose 7-speaker sound system, wireless phone projection, and a multicolor 15-inch head-up display. Advanced safety features like automatic emergency braking, lane departure warning, and HD surround vision keep you protected. The bed is equipped with a spray-on bedliner, LED cargo lighting, and multiple camera provisions for trailering confidence. Off-road capability shines with the 2-speed active transfer case, off-road suspension, and hill descent control ready for any terrain. Discover the Sierra 2500HD difference today at our showroom. Why buy from Greg Lair GMC? It's a great question with an even better answer! We've been a local fixture in the Panhandle for over 40 years, putting customers from Amarillo and the Panhandle first every single day. We set ourselves apart as the home of the FREE Lifetime Powertrain Warranty on all inventory under 100,000 miles. From our hassle-free buying process to our thorough multi-point inspections by Certified GM Technicians, we make sure your next vehicle is safe, reliable, and ready for the road. Stop by today and see the Greg Lair difference for yourself!.