2018 Chevrolet Silverado 2500 HD; with Single Rear Wheels (SRW);. 2018 Chevrolet Silverado 3500 HD; with Single Rear Wheels (SRW);. 2018 Chevrolet Suburban 3500 HD;. 2018 GMC Sierra 2500 HD;. 2018 GMC Sierra 3500 HD; with Single Rear Wheels (SRW);.