Onstar interface for GM 24-pins replaces the factory radio in 2003–2006 GM SUVs and trucks while retaining Onstar.
In-Wall / In-Ceiling System2-Way Stereo Sound SpeakersIncludes (2) 6.5-inch Speakers1/2'' High Compliance Polymer TweeterPolypropylene Cone with Rubber EdgeMounts Flush on Walls or CeilingsBuilt-in Electronic Crossover NetworkEnvironmentally Friendly ABS Construction