Fits These Vehicles: 2015-2018 Chevy Silverado 2500 HD Without Z71 Package, Not for High Country Model(Not For Z71 Package and High Country Model)/2019 Chevy Silverado 2500 HD LTZ Without Z71 Package/2015-2018 Chevy Silverado 3500 HD Without Z71 Package, Not for High Country Model(Not For Z71 Package and High Country Model)/2019 Chevy Silverado 3500 HD LTZ Without Z71 Package… Installation Type: BOLT OVER/OVERLAY/BOLTON (DRILLING REQUIRED)