2024 GMC Sierra 2500HD AT4 Duramax 4WD for Sale in Longmont, CO

Looking for a powerful used diesel truck in Longmont, Boulder County, or Northern Colorado? This 2024 GMC Sierra 2500HD AT4 delivers the heavy-duty capability, towing strength, premium comfort, and off-road performance Colorado truck owners demand. Finished in Titanium Rush Metallic, this Sierra 2500HD AT4 combines rugged 4WD capability with upscale technology and a refined interior, making it equally at home on the jobsite, towing, commuting through Longmont, or heading into the Colorado mountains.

Key Features & Equipment:

ACCIDENT-FREE CARFAX
Duramax 6.6L V8 Turbodiesel
10-Speed Automatic Transmission
4WD / 4X4 / Four-Wheel Drive
AT4 Off-Road Package
TOW PACKAGE
Adaptive Cruise Control
Blind Spot Monitor
Apple CarPlay & Android Auto
Bluetooth® Hands-Free Connectivity
Navigation / GPS
Heated & Ventilated Leather Front Seats
Heated Steering Wheel
Heated Exterior Mirrors
Rear Backup Camera
Rear Parking Sensors
Rear Cross Traffic Alert
Forward Collision Alert
Automatic Emergency Braking
15-Inch Head-Up Display
Touchscreen GMC Infotainment System
Wireless Charging
SiriusXM Satellite Radio
Power-Retractable Running Boards
Spray-On Bedliner with AT4 Branding
Keyless Entry & Push Button Start
USB Connectivity
Electronic Stability Control

Under the hood, the Duramax 6.6L V8 Turbo-Diesel engine delivers the strength and torque expected from a heavy-duty GMC pickup. Paired with a 10-speed automatic transmission and four-wheel drive, this Sierra 2500HD AT4 is engineered for demanding work, towing, hauling, rough roads, and Colorado adventures.

The GMC Sierra 2500HD AT4 adds serious off-road capability with an AT4-tuned suspension, 4WD system, all-terrain capability, and aggressive styling. The Titanium Rush Metallic exterior is complemented by bold AT4 design elements, gloss-black accents, power-retractable assist steps, and a practical spray-on bedliner.

Inside, you'll find a premium cabin designed for long drives and hard work. Leather-appointed seating, heated and ventilated front seats, a heated steering wheel, navigation, Apple CarPlay, Android Auto, wireless charging, and the GMC touchscreen infotainment system keep you comfortable and connected. The 15-inch Head-Up Display puts important driving information where you can easily see it.

Advanced driver-assistance technology adds confidence with Adaptive Cruise Control, Blind Spot Monitoring, Forward Collision Alert, Automatic Emergency Braking, Rear Cross Traffic Alert, a rearview camera, and rear parking sensors.

If you're searching for a GMC Sierra 2500HD, Duramax diesel truck, heavy-duty pickup, 4WD truck, towing truck, or off-road truck near Longmont, Boulder, Erie, Lafayette, Louisville, Niwot, Loveland, or throughout Northern Colorado, this 2024 GMC Sierra 2500HD AT4 is worth a closer look.

Visit Fowler Longmont Honda in Longmont, Colorado, to see this Sierra 2500HD AT4 in person and take it for a test drive. Browse our website for current inventory, pricing, financing options, and more quality used trucks, SUVs, and cars in Longmont and Northern Colorado.