The all-new 2019 Chevrolet Silverado features a fully boxed steel frame that is 88 pounds lighter than its predecessor, while offering 10 percent greater torsional rigidity. Eighty percent of the frame is made of high-strength steel varying from 2 to 5 millimeters in thickness, and every millimeter is optimized for performance using a variety of processes, including hydroforming, roll forming, conventional stamping and tailor-rolled blanking.