PAC C2R-GM11B Radio Replacement Interface (2005-2006 Cobalt, 2004-2007 Malibu, 2005-2007 G6, No OnStar(R)). Replicates factory warning chimes & provides a databus-generated 12V accessory power output that is fully compatible with the GM(R) RAP system, Keeps the radio powered after key-off, Issues data commands that maintain a health system status to other vehicle's systems, Retains all warning chimes including backup chimes, memory seats, low fuel, door/hatch ajar & others, Retains RAP system when key is turned off--radio stays on for approximately 10 min or until the door is opened, Supplied wire harness to connect aftermarket stereo to factory speakers, Will work in vehicle that has the factory Bose(R) amp removed or bypassed--custom wiring is required, Buzzer is built into the interface, Includes +12V accessory wire, For non-OnStar(R) 2005-2006 Chevrolet(R) Cobalt, 2004-2007 Malibu, 2005-2007 Pontiac(R) G6;