New 2026 GMC Sierra 2500HD AT4 4WD

Call us at 512-954-9290

The 2026 GMC Sierra 2500HD AT4 delivers professional-grade capability built on proven engineering. This Red truck arrives equipped with the Duramax 6.6L V8 Turbodiesel engine producing 470 hp and 975 lb-ft of torque, paired with a 10-speed automatic transmission and full-time 4WD. With just 5 miles on the odometer, this is virtually a brand-new truck ready for work or adventure.

- Duramax 6.6L V8 Turbodiesel with 470 hp and 975 lb-ft of torque
- 10-Speed Automatic transmission with 4WD
- AT4 Premium Plus Package with off-road suspension and 2-speed active transfer case
- Gooseneck/5th Wheel Prep Package for serious towing capability
- Technology Package with wireless phone projection and wireless charging
- X31 Off-Road Package featuring Hill Descent Control
- Multicolor 15" Head-Up Display for critical driving information
- HD Surround Vision and Bed View Camera with trailer camera provisions
- Bose Premium 7-Speaker Sound System with SiriusXM 360L trial
- Spray-on pickup bedliner with GMC logo protection
- Heated and ventilated leather front seats with 10-way power adjustment
- Trailer Side Blind Zone Alert and Ultrasonic Park Assist
- 20" High Gloss Black aluminum wheels
- Remote Vehicle Starter System and Push Button Start

The AT4 designation marks this as a serious work truck designed for demanding conditions. The off-road suspension and 2-speed active transfer case provide the foundation for genuine capability, while the gooseneck prep package positions this Sierra for heavy trailer work. The spray-on bedliner protects your investment, and the bed view camera system with trailer provisions simplifies everyday towing and backing operations.

Modern technology enhances both comfort and function. The wireless charging pad, wireless phone projection, and comprehensive camera system including HD Surround Vision keep you connected and aware. The Bose audio system, heated and ventilated seats, and power sunroof create a premium cabin environment. Dual-zone climate control and heated steering wheel add refinement to your daily drive.

Safety features are comprehensive and built-in standard. Automatic emergency braking, forward collision alert, and lane departure warning work together with your awareness. The rear cross traffic alert and trailer side blind zone alert systems address real-world scenarios you'll encounter. Occupant sensing airbags and a full array of stability control systems protect your passengers.

This Sierra 2500HD AT4 represents the full package—a diesel workhorse with the technology and comfort you expect in a premium truck. The combination of authentic capability, proven engineering, and modern conveniences makes this an exceptional value. Come see this truck in person and understand why the Sierra 2500HD continues to lead the segment.

Call us at 512-954-9290 Price includes: $1000 - Buick & GMC Consumer Cash Program. Exp. 09/30/2026 $1000 - GMC Incremental Consumer Cash Program. Exp. 09/30/2026