Get the aftermarket car audio system you want without sacrificing original features using the Scosche GM3000 Select 2004-Up GM LAN Stereo Replacement with Chime. This radio interface kit allows you to replace the factory stereo and still retain all the warning and safety chimes that are present in certain 2004 and later GM models. It communicates with your vehicle's ECM (Electronics Control Module), maintaining a "healthy" status for internal diagnostics. This GM3000 stereo connector is also compatible with OnStar and Standard Bose. It includes a wiring connector for seamless installation.