General Motors has so many versions of the Chevrolet Silverado that it doesn’t even build all of them. The Silverado 4500 HD, 5500 HD, and 6500 HD are medium-duty Class 6 commercial trucks that share a platform and factory with the International CV Series. That unique arrangement is about to come to an end. According to TFL Truck, production of the Silverado MD models will end September 30, 2026. Transport Topics reports that GM opted not to ren…