Axxess GMRC-LAN-01 GM Non-Onstar Non-Amplified Interface Harness that Retains Door Chime GM Non-Onstar, Non-Amplified Interface Harness for Select 2006-2008 GM Vehicles Retains door chimes and accessory with included speaker Retains warning chimes through the on-board speaker of the adapter Retains RAP feature if equipped This adapter will provide a 12 volt accessory output for the aftermarket radio