Bestop 75626-15 PowerBoard NX Retractable Running Board Set for 2007-2018 Chevy Silverado/GMC Sierra 1500/2500/3500 Crew Cab (except 2011-2018 diesel engine models) Electrically powered running board hides stealthily underneath your truck when doors are closed and extends down to meet your foot when door opens No door wires are tapped and the interior of truck cab is not touched or altered as wireless components are placed in the door jambs which send wireless signal to central receiver that open or close the steps as needed Variable-mount LED light kit attaches to linkage or to body and illuminates board and ground below for easier access in and out of your vehicle more tools Patented high strength, die-cast aluminum linkages built to last in any climate with 600 pounds capacity per side Sturdy 6.25 inch wide aluminum running board features ultra-durable, non-slip, powder-coated surface