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DESCRIPTION
AT4 Highlights Heavy-Duty Capability Off-Road Equipment: Built for tough terrain and work sites alike, typically featuring specialized off-road suspension tuning, an off-road mode, skid plates, and robust all-terrain tires. Heavy-Duty Power: Designed for serious towing and hauling, the 2500HD lineup pairs heavy-duty chassis engineering with robust powertrain options (such as the 6.6L V8 gas engine or the available 6.6L Duramax Turbo-Diesel V8 mated to an Allison 10-speed automatic transmission). Interior Technology: Combines premium materials (such as AT4-specific leather seating accents) with advanced trailering tech views, a large touchscreen infotainment system with Google built-in, and driver-assistance safety features. Upgrade to Professional Grade at Tucks Trucks GMC..