Suspension & Steering. For GMC Sierra 3500 HD 2011-2019. For GMC Sierra 2500 HD 2011-2019. For Chevrolet Silverado 3500 HD 2011-2019. For Chevrolet Silverado 2500 HD 2011-2019. Heavy Duty - Front Differential Skid Plate is crafted from lightweight steel, ensuring optimal performance and durability.