The new 2019 Chevrolet Silverado 1500 funneled into dealerships last year, but this summer, the pickup will offer a light-duty diesel engine for the first time in over a decade—and it earns bragging rights for topping Ford and Ram. Chevrolet confirmed this week that the 2019 Silverado's upcoming 3.0-liter Duramax inline-6 turbodiesel makes...