Thank you for visiting another one of Hall Buick GMC&39;s online listings! Please continue for more information on this 2026 GMC Sierra 1500 AT4X with 3,187mi. Quality and prestige abound with this GMC Sierra 1500 AT4X. When GMC created this vehicle with 4 wheel drive, they immediately enhanced the performance ability. Easily switch between two and four wheel drive to take advantage of the improved traction. The quintessential GMC -- This GMC Sierra 1500 AT4X speaks volumes about its owner, about uncompromising individuality, a passion for driving and standards far above the ordinary. The GMC Sierra 1500 AT4X will provide you with everything you have always wanted in a car -- Quality, Reliability, and Character.