The trailer brake controller allows brakes to be applied on to the trailer at the same time as the truck. It also lets you control the sensitivity of the brake or how hard it the stopping power will be applied. Programming is necessary after installation and will require the vehicle to be connected to a computer to do so. Additional hardware and software maybe required to connect the computer to your truck and activate the trailer brakes for the module to work. Fits the Following Vehicles: 2016-2018 1500 2016-2018 2500 2016-2018 3500 2019-2023 1500 Classic Replaces Part Numbers: 82215040, 82215040AC, 82215040AB, 68105206AC, 68105206AB This is a compatible replacement part manufactured by AA Ignition. This trailer brake module kit is NOT a genuine OEM part. Vehicle makes and their associated vehicle models and part numbers are used in this listing only to identify the vehicles this trailer brake controller kit fits.