2026 GMC Sierra 2500HD AT4

From the store

Call us at 512-954-9290

- Duramax 6.6L V8 Turbodiesel with 470 hp and 975 lb-ft of torque

- 10-Speed Automatic transmission with 4WD and 2-Speed Active Transfer Case

- AT4 Preferred Package and AT4 Premium Plus Package

- Gooseneck/5th Wheel Prep Package for serious towing capability

- X31 Off-Road Package with off-road suspension and hill descent control

- Technology Package with advanced camera systems and connectivity

- Bose Premium 7-Speaker Sound System with SiriusXM 360L trial subscription

- Wireless phone projection and Apple CarPlay/Android Auto compatibility

- Multicolor 15" diagonal head-up display

- Heated and ventilated front seats with 10-way power adjustment

- Power sunroof with deep-tinted glass

- Bed View Camera with trailer camera provisions and viewing software

- HD Surround Vision with rear cross traffic alert and ultrasonic park assist

- Spray-on pickup bedliner with GMC logo

- 20" high gloss black aluminum wheels

This 2026 GMC Sierra 2500HD AT4 is built for those who demand capability and refinement in equal measure. The legendary Duramax 6.6L turbodiesel engine delivers the power and torque needed for serious work, while the sophisticated ten-speed automatic transmission ensures smooth efficiency whether you're on the highway or tackling challenging terrain. With 4WD and the 2-Speed Active Transfer Case, you have the control to handle virtually any condition.

The AT4 packages transform this truck into a premium work and adventure vehicle. Off-road suspension, hill descent control, and the X31 Off-Road Package prepare you for unpaved terrain and steep grades. The gooseneck/fifth-wheel prep package and in-vehicle trailering system provide the infrastructure for professional-grade towing operations.

Technology seamlessly integrates into every aspect of your driving experience. The fifteen-inch head-up display keeps critical information in your line of sight. Multiple camera systems including bed view, trailer cam provisions, and HD surround vision eliminate blind spots and make maneuvering intuitive. Wireless charging, wireless phone projection, and SiriusXM with a 360L trial subscription keep you connected and entertained.

Comfort extends throughout the cab with heated and ventilated front seats, heated second-row outboard seats, and a power sunroof. The premium leather-appointed seating and premium Bose sound system create an inviting environment for long drives. Dual-zone climate control and memory seat functions ensure personalized comfort for each occupant.

Safety systems work continuously to protect you and your passengers. Automatic emergency braking, forward collision alert, lane departure warning, and rear cross traffic alert provide multiple layers of awareness. The safety alert seat and OnStar services add additional security and peace of mind.

This truck is finished in silver, displaying the clean lines and commanding stance that define the Sierra 2500HD. The twenty-inch high gloss black wheels complement the bold exterior, while the spray-on bedliner with GMC logo demonstrates attention to detail and durability. Every element has been thoughtfully designed for those who refuse to compromise.

Call us at 512-954-9290 Price includes: $2000 - GMC Bonus Cash. Exp. 11/30/2026 $2500 - Buick & GMC Consumer Cash Program. Exp. 11/30/2026