This is a GM navigation unit that has come out of a 2013 GMC Sierra. I am including all of necessary harnesses to make this unit plug and play. I also have the amp for the non-Bose trucks (mine was a non Bose). The amp connects to the trucks body harness via a t harness (included). You will get everything I have in order to set it up. Will also fit Silverado's. Once the unit is installed, it will show a "locked" symbol. My local dealer unlocked mine for less than $100.