What Makes the GMC Sierra AT4 Model the Ideal Off-Road Pickup?
Some Pennsylvania drivers need more than routine capability in their truck. That's what the GMC Sierra's AT4 model is for. This off-road variant to GMC Sierra 1500 and GMC Sierra Heavy Duty pickups is just as powerful and even more rugged. Take home a new GMC Sierra AT4 truck from Thomas Buick GMC today!