2021 GMC Sierra 1500 AT4This low-mileage and capable 2021 GMC Sierra 1500 AT4 with just 36,593 miles is a full-size crew cab pickup finished in a premium exterior. Powered by a strong V8 engine with 4WD, this AT4 delivers off-road readiness, modern technology, and everyday versatility in a one-owner example that has been freshly serviced with new brake rotors and an oil change.Recent Service Highlights * Oil and filter changed (July 31, 2026) * Front brake rotor(s) replaced (July 31, 2026) * Rear brake rotor(s) replaced (July 31, 2026) * Pre-delivery inspection completed (July 2026) * Interior cleaned and vehicle detailed (July 2026)Key Features * AT4 Off-Road trim * V8 Engine * 4WD * MultiPro TailgateTechnology & Comfort * GMC Infotainment System * Premium Audio * Heated Seats * Available Ventilated SeatsPerformance & Safety * Off-Road Suspension * Hill Descent Control * Advanced Driver Assistance SystemsThis low-mileage one-owner 2021 GMC Sierra 1500 AT4 offers capability, comfort, and style for work or adventure.At Walser, you'll get an exceptional car-buying experience. Our streamlined process means you'll work with one dedicated customer specialist. Upfront Pricing ensures you'll get a great deal with no surprises. Buy with confidence backed by our Worry-Free Return & Exchange Policy.We include a complimentary WalserCare warranty on most used vehicles, every vehicle gets a comprehensive 190-point inspection, and you receive a free CarFax History Report. There's no better place to get a used performance vehicle.The best car-buying experience starts right here at Walser.