The ad listing says its been unlocked. But not a big deal since I work for a dealership chain and can walk across the property to the GM side for a tech2 tool
Well it's installed today. It all works fine sounds even louder than before too. Though it's supposed to be am unlocked radio, it does flash up "calibrate" every time its turned on. Google search reveals nothing except ppl complaining of the message and they aren't getting any sound.