Installing an aftermarket remote start in my new to me 2010 Silverado, ran across a couple wires that obviously were not stock. Started cutting zip ties to see if I could figure out what they went to and a little box that says "GPS this side toward sky" fell down on the floor board. After a little research seems like many dealers install these critters in case it gets stolen. Thing is you have no idea who is tracking you and why. That little box along with it's wiring is now in the trash can in my shop.