Crux Radio Replacement Wiring Harness with SWC Retention for '14-'19 GM LAN 29 Bit v2 with LIN BusThe Crux Radio Replacement Wiring Harness with SWC Retention is designed for aftermarket radio installs in 20142019 GM LAN 29 Bit v2 vehicles using LIN Bus, preserving steering wheel controls and ensuring a reliable interface between the head unit and the vehicles data network. Compatibility: Designed for 20142019 GM LAN 29 Bit v2 vehicles with LIN Bus. SWC Retention: Maintains steering wheel control functionality after radio replacement. Radio