New guy here, Recently purchased a tahoe with a avic z2, after getting the tahoe home and checking out the radio I discovered that the c/d player doesn't work, it just say's unreadable disc when I put in a c/d {original copy } I asked a at a few car stero places around town and a few of the people said to try removing the hard drive then see it it resets the unit. So I try this today and removed the hard drive by turning on the unit, pressing the tilt button, turning off the key, then remove the two screws on the cover plate, grabed the ribbon and pulled out the hard drive I then waited a few