Replicates factory warning chimes & provides a data-bus generated 12V accessory power output that is fully compatible with GM's retained accessory power system which keeps the radio powered after key-off Issues data commands that maintain a health system status to other vehicles systems Retains all warning chimes including back-up chimes, memory seats, low fuel, door/hatch ajar & others Includes +12V accessory wire Retains RAP system when key is turned offradio 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 amplifier removed or bypassedcustom wiring is required Buzzer is built into the interface 05-06 Cobalt, 04-07 Malibu, 05-07 G6