PAC RP5-GM32 Radio Replacement Interface With Built In OnStar Retention/Pre Programmed Steering Wheel Control Retention/Navigation Output for Select GM LAN Vehicles Radio Replacement Interface With Built In OnStar Retention, Pre-Programmed Steering Wheel Control Retention and Navigation Output Retains OnStar when the factory radio is replaced Retains Factory Bluetooth (2009+ model vehicles) Retains rear seat audio controls Retains all warning chimes (chime module included)