Automotive News says that these trucks will accomplish this with a diesel engine. According to the AN report, the next-gen Colorado and Canyon will offer a small, four-cylinder Duramax turbo ...

Of the three United States automakers that offer diesel-powered heavy-duty pickup trucks, only two of those diesel engines are V8s. Those V8 diesel engines are the 6.6 Duramax found in offerings ...

up to the 6.6L V-8 Duramax diesel sold in full-size vans, heavy duty pickups and medium duty trucks in the U.S. GM first introduced the Duramax diesel 6.6L V-8 in the U.S. in the 2001 model year ...