Sierra 2500

Spider

AWD4WD

8-Cylinder Turbo

Diesel

This 2025 GMC Sierra 2500HD AT4 in Thunderstorm Gray delivers serious heavy-duty capability with a bold off-road-ready attitude, powered by the Duramax 6.6L V8 turbodiesel paired to a 10-speed automatic transmission and confident 4WD. Equipped with Preferred Equipment Group 4SB, it offers a well-appointed interior with advanced technology, premium materials, and AT4-specific design details. The AT4 Premium Plus Package elevates comfort and convenience with high-end features and driver-focused upgrades, while the Max Trailering Package enhances towing confidence for demanding workloads. Overall, this Sierra 2500HD AT4 blends rugged performance, refined comfort, and exceptional towing capability in a purpose-built package. Clean CARFAX. Visit for more details! Or call us at for our Highlands Ranch location or for our Loveland location. This vehicle is guaranteed to include one key. Additional keys are neither guaranteed nor promised. ALL SALES FINAL: The equipment listed above and below is the configuration of the vehicle as originally sold. ClearShift makes every effort to provide accurate information, however, some features listed may vary due to features being added, changed or removed during previous ownership. It is the buyer's responsibility to verify all desired features and equipment are present prior to purchase. Odometer is 4199 miles below market average! Sierra 2500HD AAT4, 4D Crew Cab, Duramax 6.6L V8 Turbodiesel, 10-Speed Automatic, 4WD, Thunderstorm Gray, Jet Black w/Kalahari Accents w/Perforated Leather-Appointed Front Seat Trim, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 2 Charge-Only Rear USB Ports, 2 Charge/Data USB Ports Inside Center Console, 2 USB Ports, 2-Speed Active Transfer Case, AT4 Preferred Package, AT4 Premium Plus Package, Bed View Camera w/2 Trailer Camera Provisions, Bose Premium 7-Speaker Sound System, Deep-Tinted Glass, Electric Rear-Window Defogger, Floor-Mounted Center Console, Front Prem Floor Liners w/Removable Carpet Insert, Front Rain-Sensing Wipers, Gloss Black Header Grille &amp; Grille Insert Bars, Gooseneck/5th Wheel Prep Package, HD Surround Vision, Heated 2nd Row Outboard Seats, Heated Driver &amp; Front Outboard Passenger Seats, Hill Descent Control, Inside Rearview Auto-Dimming Rear Camera Mirror, Keyless Open &amp; Start, LED Cargo Area Lighting, LED Smoked Amber Roof Marker Lamps, Manual Tilt-Wheel/Telescoping Steering Column, Max Trailering Package, Multicolor 15 Diagonal Head-Up Display, Off-Road High Clearance Step (LPO), OnStar Services Capable, Power Front Passenger Windows w/Express Up/Down, Power Sliding Rear Window w/Defogger, Power Sunroof, Preferred Equipment Group 4SB, Push Button Start, Rear Cross Traffic Alert, Rear Prem Floor Liners w/Removable Carpet Insert, Rear Wheelhouse Liners, Remote Vehicle Starter System, Safety Alert Seat, SiriusXM w/360L Trial Subscription, Spray-On Pickup Bedliner w/GMC Logo, Steering Wheel Audio Controls, Technology Package, Trailer Cam Provisions &amp; Trailer Viewing Software, Trailer Side Blind Zone Alert, Ultrasonic Front &amp; Rear Park Assist, Unauthorized Entry Theft-Deterrent System, Universal Home Remote, Ventilated Driver &amp; Front Passenger Seats, Wireless Charging, Wireless Phone Projection, X31 Off-Road Package.

Used 2025 GMC Sierra 2500 AT4 w/ AT4 Premium Plus Package

Used 2025 GMC Sierra 2500 AT4 w/ AT4 Premium Plus Package Highlands Ranch CO 80126

AT4 Premium Plus Package

Max Trailering Package

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Some vehicles may be subject to manufacturer safety recalls. See if there are any open safety recalls for this vehicle. This does not include non-safety recalls. Recently announced safety recalls may not yet be posted and there may be a delay between the time a repair is made and before it is reported or posted to the website. Before purchasing, be sure to ask the seller for an up-to-date status on any recalls.

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Used 2025 GMC Sierra 2500 AT4 w/ AT4 Premium Plus Package for sale in Highlands Ranch, CO 80126: Truck Details - 770955968 - Autotrader