Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
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Unfortunately on this model and year the radio has to be programmed by a GM dealer to unlock it.The radio for the 04 and 05 are not like the old ones where you could input a code.Unfortunately a dealer has to unlock it with their computer plugged into their scan tool which will be plugged into your vehicle.
A dealer will usually charge anywhere from a half hour to an hours labor to do this.
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