*Although every reasonable effort has been made to ensure the accuracy of the information contained on this site, absolute accuracy cannot be guaranteed. This site, and all information and materials appearing on it, are presented to the user "as is" without warranty of any kind, either express or implied, including but not limited to the implied warranties of merchantability, fitness for a particular purpose, title or non-infringement. All vehicles are subject to prior sale. Price does not include applicable tax, title, and license. Price excludes $490 documentation fee. Not responsible for typographical errors.
**The arrival timeline is an estimate. It may vary due to circumstances beyond Subaru’s or the retailer’s control.
Experience the pinnacle of rugged capability with this 2026 GMC Sierra 2500HD AT4. Engineered to conquer any terrain, this powerful truck is the ultimate off-road companion.
- AT4 Preferred Package
- Gooseneck/5th Wheel Prep Package
- Preferred Equipment Group 4SB
- X31 Off-Road Package
Brace yourself for an unparalleled driving experience, thanks to features like the Bose Premium 7-Speaker Sound System, SiriusXM with 360L Trial Subscription, and the convenience of Steering Wheel Audio Controls. Stay connected and entertained on every journey.
The Sierra 2500HD AT4 also boasts an impressive array of advanced technologies, including Electric Rear-Window Defogger, Front dual zone A/C, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, Push Button Start, and Remote Vehicle Starter System. Elevate your driving experience with the Universal Home Remote and Manual Tilt-Wheel/Telescoping Steering Column.
Conquer the toughest terrain with confidence, thanks to the Off-Road Suspension, Auto High-beam Headlights, Front fog lights, 2-Speed Active Transfer Case, and Gloss Black Header Grille and Grille Insert Bars. The LED Cargo Area Lighting and LED Smoked Amber Roof Marker Lamps ensure you're always well-lit, while the Rear Wheelhouse Liners and Spray-on Pickup Bedliner with GMC Logo provide durable protection.
Stay connected and in control with the Bed View Camera with Two Trailer Camera Provisions, 2 Charge-Only Rear USB Ports, 2 Charge/Data USB Ports Inside Center Console, 2 USB Ports, and the intuitive Floor-Mounted Center Console. The Front Premium Floor Liners with Removable Carpet Insert and Rear Premium Floor Liners with Removable Carpet Insert add a touch of refinement.
Enhance your driving experience with the HD Surround Vision, OnStar Services Capable, Rear Cross Traffic Alert, Rear Premium Floor Liners with Removable Carpet Insert, Trailer Cam Provisions and Trailer Viewing Software, Trailer Side Blind Zone Alert, Ultrasonic Front and Rear Park Assist, and Wireless Charging.
This 2026 GMC Sierra 2500HD AT4 is the ultimate expression of rugged capability and advanced technology. Experience the power and versatility that will elevate your driving adventures to new heights.
