I have the same question about what is needed for a 2019 truck ???
Hi there! Our SL1s are compatible with the Low Beam on the 2019 2500 (link below)! We have had some reports of the 2500 needing Anti-Flickers module, so we do recommend getting those as well! Unfortunately, the SL1 isn't compatible with the high beam due to a clearance issue with the housing. Let us know if you have any other questions!