2021 GMC Sierra 2500HD

About this GMC Sierra 2500HD

This 2021 GMC Sierra 2500HD AT4 is listed at $60,999 with 54,253 miles on the odometer. Powertrain: 6.6L V-8 Diesel Turbocharged, Automatic, 4WD. Finished in Onyx Black, this Pickup Truck is well suited to daily driving and longer trips. Available at O'Neil Nissan in Warminster, PA. Contact the dealer directly through Carlify to schedule a test drive or request more photos. Looking at other diesel options? Use the related links below to compare similar listings on Carlify.

SUPER RARE DIESEL FIND – 2021 GMC Sierra 2500 AT4 – Only 54,253 Miles! This is not your average heavy-duty truck — this is the 2021 GMC Sierra 2500 AT4 Diesel, fully loaded and ready to dominate both the worksite and weekend adventures. Under the hood? A legendary 6.6L Duramax Turbo-Diesel V8 paired with a 10-speed Allison transmission, delivering incredible torque and towing power. With a GVWR of 11,350 lbs, this truck is built to haul, tow, and take on anything you throw at it. But power is just the beginning — this AT4 is loaded with luxury and cutting-edge tech, featuring: Technology Package – Heads-Up Display, Rear Camera Mirror, HD Surround Vision. Driver Alert Package I & II – Lane Departure Warning, Rear Cross Traffic Alert, Forward Collision Alert, and more. Premium Plus Package – Ultimate comfort and premium interior finishes. Preferred Package – Convenience features that make every ride smoother. X31 Off-Road Package – Off-road tuned suspension, skid plates, and hill descent control. Power Running Boards – Sleek, automatic access with a bold look, And SO much more! This diesel-powered beast is in excellent condition — a rare find in the pre-owned market. Trucks like this don’t last long, especially when they’re this clean, this capable, and this well-equipped. Why Buy from O’Neil Nissan in Warminster, PA? No Hidden Fees – Ever Top Dollar for Your Trade Clear, Upfront Pricing – No Surprises 5-Star Customer Experience – Start to Finish Whether you're chasing trails, towing heavy, or just want to ride in rugged luxury — this 2021 Sierra 2500 AT4 Diesel is the truck that checks every box. 👉 Don’t miss your chance — schedule a test drive today at O’Neil Nissan before it's gone!

Inspection summary

Inspection scores are estimates based on title status, accident history, and frame condition. Schedule a third-party inspection before purchase.