07/17/2026
Not your average heavy-duty truck.
This 2025 GMC Sierra 2500HD AT4X pairs a 6.6L Duramax Turbo-Diesel with 470 horsepower and 975 lb-ft of torque—then adds the off-road hardware, towing preparation, technology, and premium interior to handle far more than the workweek.
Highlights include:
• Gooseneck / 5th-wheel prep package
• AT4X off-road suspension and 4WD
• Full-grain leather with heated and ventilated front seats
• HD Surround Vision and bed-view camera
• 15-inch multicolor head-up display
• Bose premium 12-speaker audio
• Wireless Apple CarPlay, Android Auto, and charging
GMC Certified with only 9,955 miles.
DM “AT4X” for current price and availability.