Meet the 2021 GMC Sierra 1500 Denali—a premium truck built to deliver capability, comfort, and confidence on every drive. With just over 53,000 miles, this Cayenne Red Tintcoat beauty has been meticulously maintained by its original owner and backed by a clean Carfax report showing no accidents. You're looking at a well-preserved truck that has plenty of years ahead.

This Sierra is equipped with features that matter:

- 3.0L I-6 Diesel Turbocharged Duramax Engine with 277 hp and 460 lb-ft of torque
- 4WD capability for confident handling in any condition
- Denali Ultimate Package with premium styling and technology
- Power sunroof for an open-air driving experience
- GMC MultiPro Power Steps for easy entry and exit
- 22 polished aluminum wheels with LPO bright chrome options
- Adaptive Cruise Control with Forward Collision Alert and Automatic Emergency Braking
- Lane Keep Assist with Lane Departure Warning
- HD Surround Vision with trailer view cameras
- Multicolor 15 Head-Up Display
- Power-adjustable heated and ventilated front seats with lumbar support
- Premium Bose 7-speaker sound system with SiriusXM and navigation
- Wireless charging and dual USB ports throughout
- Integrated Trailer Brake Controller with in-vehicle trailering app
- Chrome recovery hooks and bed-mounted 120-volt power outlet

The efficiency speaks for itself with an EPA rating of 22 city and 26 highway MPG. The 3.0L turbocharged diesel engine provides the balance of power and efficiency that truck owners appreciate. Towing capability is paired with the ProGrade Trailering System and hitch guidance technology, making connections straightforward and safe.

Inside, the Denali cabin reflects meticulous craftsmanship. Heated and ventilated bucket seats with genuine leather trim accommodate you in comfort, while the 10-way power adjusters with lumbar support ensure your driving position is personalized. The genuine wood console and door panel inserts add warmth to the cabin, complemented by the ambient lighting and overhead console storage.

Technology integration extends throughout the truck. Apple CarPlay and Android Auto connectivity keep you linked to your devices, the 4G LTE Wi-Fi hotspot keeps passengers connected, and OnStar services provide added security and convenience. The automatic high-beam feature and tire pressure monitoring system highlight GMC's attention to everyday practicality.

This truck has been cared for and is ready for its next chapter. It represents the perfect combination of proven diesel reliability, premium appointments, and modern safety features that allow you to drive with confidence whether you're managing daily responsibilities or weekend adventures.

Proudly serving O'Fallon, IL and nearby communities like Shiloh, Belleville, Fairview Heights, Collinsville, and the greater St. Louis Metro East, our dealership is committed to delivering exceptional customer service and high‑quality vehicles at fair, competitive prices. From sales to service, our family‑owned team is driven by integrity, value, and a passion for automotive excellence. When you're searching for a trusted dealership near O'Fallon, Illinois, you can count on us to provide a transparent, community‑focused experience you'll feel confident recommending for generations to come.