Does not compatible with diesel engine model. Not compatible with crew cab (4 full-size doors). Yes, those running boards are compatible with 2007-2018 Chevy Silverado/ GMC Sierra 1500 2500hd 3500hd double cab, 2019 silverado /sierra 2500hd 3500hd, 2019 silverado 1500 ld and 2019 sierra 1500 limited double cab with 2 narrow rear doors.
Item Tag: 78 x 4 x 4.7 inches
07-19 Chevy Silverado GMC Sierra Double Cab 3″ Running Boards Side Step Down
(07-19 Chevy Silverado GMC Sierra Double Cab 3″ Running Boards Side Step Down 4.7″ with 2007-2018 Chevy Silverado/GMC Sierra 1500 Double Cab, 07-19 Silverado/Sierra 2500HD 3500HD. 2007 Classic Model), 2007-2019 Silverado/Sierra 2500HD 3500HD, 2019 Silverado 1500 LD, 2019 Sierra 1500 Limited with 2 Narrow Rear Doors.