CRUX OnStar Radio Replacement Interface for Select GÇÖ00-11 GM Class II with SWCCRUX OnStar Radio Replacement Interface is a dedicated adapter designed to replace the factory radio in select GM vehicles from 2000 through 2011 that use a Class II data bus and steering wheel controls. It provides a streamlined path to upgrade your vehicle's radio while keeping essential data bus connections and control interfaces intact. Compatibility: Select GM vehicles (20002011) with Class II data bus and steering wheel controls (SWC). Product