Meet the 2025 GMC Sierra 2500HD AT4 in White, a premium heavy-duty truck engineered to deliver capability and refinement for demanding work and purposeful driving. This truck combines the strength of the legendary Duramax 6.6L V8 Turbodiesel engine with the sophisticated appointments of GMC's AT4 lineup, creating a vehicle that performs as well as it looks.

- 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
- Engine Block Heater and 220-Amp Alternator for cold-weather reliability
- Premium Bose 7-Speaker Sound System with SiriusXM 360L
- Apple CarPlay and Android Auto compatibility
- Heated and ventilated leather front seats with 10-way power adjustment
- Heated rear seats and dual-zone automatic temperature control
- HD Surround Vision and Bed View Camera with trailer provisions
- Automatic Emergency Braking and Forward Collision Alert
- Ultrasonic Front and Rear Park Assist with Surround Vision
- Wireless phone charging and wireless CarPlay/Android Auto projection
- Off-Road Suspension with Hill Descent Control and X31 Off-Road Package
- 20-inch high-gloss black aluminum wheels with all-terrain capability
- Spray-on pickup bedliner with GMC logo

The Sierra 2500HD AT4 delivers the torque and towing capacity professionals expect from a heavy-duty truck, while the Duramax engine provides exceptional efficiency and reliability. The 10-speed automatic transmission is paired seamlessly with 4WD and a 2-speed active transfer case, giving you command over any terrain. Whether you're navigating challenging jobsites or remote mountain passes, this truck responds with authority.

Inside, you'll find an environment that mirrors the truck's premium positioning. The perforated leather-appointed front seats heat and ventilate to keep you comfortable across seasons, while the 10-way power adjustment ensures your ideal driving position. The dual-zone automatic climate control, heated steering wheel, and heated rear seats create a cabin that rivals luxury SUVs in refinement.

Technology is seamlessly integrated throughout the cabin. The premium GMC infotainment system connects with Apple CarPlay and Android Auto, while wireless phone charging keeps your devices ready. The HD Surround Vision system, Bed View Camera, and Ultrasonic Park Assist take the guesswork out of maneuvering this substantial truck in tight spaces. Trailer guidance with hitch view simplifies hookup, and the in-vehicle trailering app puts essential information at your fingertips.

Safety features reflect GMC's commitment to protecting you and your passengers. Automatic Emergency Braking, Forward Collision Alert, and Rear Cross Traffic Alert work together to enhance awareness. Lane Departure Warning and IntelliBeam automatic high beams add another layer of protection during varied driving conditions.

The AT4 package distinguishes this Sierra with purposeful styling and genuine off-road capability. The X31 Off-Road Package pairs off-road suspension with Hill Descent Control, while the gloss black header grille, heated door mirrors, and 20-inch high-gloss black aluminum wheels give the truck a commanding presence. The spray-on bedliner with GMC logo protects your cargo investment while maintaining the truck's refined appearance.

This 2025 GMC Sierra 2500HD AT4 represents a significant investment in capability, comfort, and confidence. We invite you to experience how this truck elevates the heavy-duty standard.