Step into the rugged and capable 2021 GMC Sierra 1500 AT4. This impressive truck is equipped with a powerful 3.0L I6 Duramax Diesel engine, delivering exceptional performance and efficiency. Outfitted with a range of premium features, the Sierra AT4 is ready to take on any adventure.<br/><br/>- Satin Steel Metallic exterior<br/>- 20" Machined Aluminum Wheels with Carbon Grey Metallic Accents<br/>- LT265/60R20 MT Blackwall Goodyear Wrangler Territory Tires<br/>- Lockable Rear Underseat Storage Compartment<br/>- Preferred Equipment Group 4SB<br/>- Trailering Package<br/><br/>Explore the Sierra AT4's advanced capabilities, including:<br/>- Steering Wheel Audio Controls<br/>- Electric Rear-Window Defogger<br/>- 120-Volt Bed-Mounted Power Outlet<br/>- Auto-Locking Rear Differential<br/>- Electrical Lock Control Steering Column<br/>- 170-Amp Alternator<br/>- Auxiliary External Transmission Oil Cooler<br/>- Heavy-Duty Air Filter<br/>- LED Cargo Area Lighting<br/>- ProGrade Trailering System<br/>- Spray-On Pickup Bed Liner with AT4 Logo<br/><br/>The Sierra AT4 also offers a wealth of premium comfort and convenience features:<br/>- Heated and Ventilated Front Seats<br/>- Keyless Open and Start<br/>- Power Door Locks<br/>- 4.2" Diagonal Color Driver Information Center<br/>- 4G LTE Wi-Fi Hotspot Capable<br/>- Rear Dual USB Charging-Only Ports<br/>- HD Rear Vision Camera<br/>- OnStar and GMC Connected Services Capable<br/><br/>Experience the uncompromising capability and refined sophistication of the 2021 GMC Sierra 1500 AT4. Schedule a test drive today and discover the perfect truck to elevate your adventures.