2020 GMC Sierra 1500 AT4: What You Need to Know
Sierra AT4 offers authentic off-road capability and innovative technology paired with premium refinement. It features a 2-inch factory suspension lift, standard 4WD with a two-speed transfer case, locking rear differential, skid plates, Rancho monotube shocks, 18-inch wheels with available Goodyear Wrangler DuraTrac tires (20-inch wheels available), Hill Descent Control, Traction Select System, MultiPro Tailgate, exclusive…