The CRUX SOOGM-15 is designed to allow for the installation of aftermarket radios while retaining OnStar functionality with Bose Amplified & Non-Amplified Systems, while also retaining Chime & Accessory features in a wide range of General Motors Class II Data-bus vehicles
Crux SOOGM15 Onstar Radio Replacement Interface For Select Gm Class Ii W/swc