upgrading to cd player ~ 2005 Silverado

I have a 2005 silverado with just an AM/FM radio in it with no fancy steering wheel controls. I would like to replace it with a factory gm cd player. is this possible or does the radio have to be programmed to the vin number for security reasons..my current radio says nothing about anti theft system. I also saw factory cd player on gm parts direct for same price as a new after market..I just want to go with factory for thieves won't steal them but they will a after market even if its only worth 5 dollars..thanks...