2021 Chevy Silverado Fuel Economy Ratings Fall for 5.3L V8
A global semiconductor chip shortage is wreaking havoc across the automotive industry. In many cases, the limited availability of microchips is delaying and reducing production, creating dealership inventory shortages. Now, General Motors has announced it will cost some 2021 Chevrolet Silverado and 2021 GMC Sierra pickup trucks in terms of their fuel economy ratings.
The situation forces GM to decide between slowing production or building some of its full-size pickups without the automatic cylinder deactivation systems that typically improve gas mileage. The technology deactivates a portion of the cylinders in the pickups' engines on the highway and when coasting down hills or to a stop, making them more fuel-efficient.