PAC aPAC-GM11B Dual Auxiliary Audio Input for 2006&iquest;2008 GM 11-Bit Vehicles with Blue 24-Pin Integrates aux audio input directly into factory radio for maximum sound quality Ideal for MP3 players, portable DVD players, laptops, gaming systems and more Includes vehicle harness and 2 audio cables For 20062008 GM 11-bit vehicles with blue 24 pin