PAC C2R-GM11 11-Bit Interface for 2007 GM Vehicles with No OnStar System: * Data-controlled rap accessory output * Antenna or amplifier turn on output wire * Dimmer or illumination output wire * Steering wheel control output wire * Retains all factory warning chimes and audible turn signal indicators * Compatible with or without factory-amplified audio systems * For 2007 Cobalt, 2006 - 2007 HHR, 2007 Pontiac G5, 2006 - 2007 Solstice and 2007 Saturn Aura and Sky