2025 GMC Sierra 3500HD AT4

The 2025 GMC Sierra 3500HD AT4 4WD in Sterling Metallic combines heavy-duty performance with premium off-road capability, powered by the formidable Duramax 6.6L V8 Turbodiesel paired with a 10-speed Allison automatic transmission. Outfitted with the AT4 Preferred Equipment Group 5SA, this truck features distinctive black chrome exterior accents, red recovery hooks, and exclusive AT4 badging. The Technology Package adds a 15-inch head-up display, rear camera mirror, and HD Surround Vision, while the X31 Off-Road Package enhances its rugged capability with skid plates, hill descent control, off-road suspension, and twin-tube Rancho shocks. Inside, the cabin offers premium materials, a large digital infotainment system, wireless Apple CarPlay and Android Auto, heated and ventilated front seats, and advanced trailering technologies.

Clean CARFAX.

Visit us at ClearShift.com for more details! Or call us at (720) 390-7910 for our Highlands Ranch location or (970) 251-1063 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.


Sierra 3500HD AT4, 4D Crew Cab, Duramax 6.6L V8 Turbodiesel, 10-Speed Automatic, 4WD, Sterling Metallic, Jet Black With Kalahari Accents Leather, 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, 3.42 Rear Axle Ratio, AT4 Preferred Package, AT4 Premium Plus Package, Auto-Dimming Inside Rearview Mirror w/Camera, 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 Rain-Sensing Wipers, Gloss Black Header & Grille Insert Bars, Gooseneck/5th Wheel Prep Package, HD Surround Vision, Heated 2nd Row Outboard Seats, Heated Driver & Front Outboard Passenger Seats, Hill Descent Control, Keyless Open & Start, LED Cargo Area Lighting, LED Smoked Amber Roof Marker Lamps, Manual Tilt-Wheel/Telescoping Steering Column, Multicolor 15" Diagonal Head-Up Display, Off-Road High Clearance Step (LPO), Power Front Windows w/Passenger Express Up/Down, Power Sliding Rear Window w/Defogger, Power Sunroof, Preferred Equipment Group 4SB, Prem Front Floor Liners w/Removable Carpet Insert, Prem Rear Floor Liners w/Removable Carpet Insert, Push Button Start, Rear Cross Traffic Alert, 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 Camera Provisions, Trailer Side Blind Zone Alert, Ultrasonic Front & Rear Park Assist, Unauthorized Entry Theft-Deterrent System, Universal Home Remote, Ventilated Driver & Front Passenger Seats, Wireless Charging, Wireless Phone Projection, X31 Off-Road Package.