Answer the call to adventure in Sierra HD AT4. Sierra HD AT4s unique adventure-ready styling and capability are made to take on off-road obstacles. Take on the trail with Rancho shocks, skid plates, an Eaton automatic locking rear differential and the choice of all-terrain tires or available mud-terrain tires. Go off-road with a max ground clearance of more than 10 inches, along with a max front-approach angle of nearly 27 degrees on select models.
Sierra HD AT4s durable yet refined cabin offers premium materials and advanced technologies for comfort and control. The Jet Black interior with Kalahari accents features a leather-wrapped heated steering wheel, 10-way power front seats with heated and ventilated leather seating surfaces, heated rear outboard seats and smart storage compartments.
Power comes from the 6.6L Duramax Turbo Diesel engine paired with an Allison 10-speed automatic transmission. Easily shift among multiple settings with the Traction Select System, including Off-Road mode to help improve traction and control on gravel or mud. The 2-speed AutoTrac transfer case with an active automatic 4WD setting provides seamless shifting between two- and four-wheel drive based on surface conditions.
This AT4 features 20 inch machined aluminum rims with high gloss black accents , power retractable assist steps and the Multi -Pro tailgate.
Edmunds saidThe Sierra 2500HD is a seriously capable heavy-duty truck. The large cabin fits passengers and cargo without issue. Hauling and towing capacities are strong, just as you'd expect from a truck in this class.