This is a terrible week for my Yukon. Now the display in the rear entertainment system is out. I checked the info fuse #45 in the engine fuse compartment and its good. I have removed the unit and took it apart, examined the circuit boards and no signs of anything burned out.I do have the button illuminating after removal and reinstallation. however I do not have a display to see what going on. The rear A/C buttons to work, the heated seats dont, or anything else please help. I am hoping I dont have to purchase a new unit. the unit is like $250
