Chevrolet Silverado HD (2011)
Deep relied on the Chevrolet Silverado's new, smart exhaust brake system to slow the truck / trailer combination on descents, Helping PROVE the new system is Suitable for the most demanding conditions. It was a drive across the heart of the Rocky Mountains and Some of the interstate system's steepest grades, with altitudes ranging from Denver's approximately 5.000 feet (1.525 m) to More Than 11.100 feet (3.400 m) at the Eisenhower Tunnel.