Hello everyone! I am trying to add steering wheel controls to my 2006 Silverado 1500 WT. I've installed a new steering wheel, new buttons, new clockspring, and a new clockspring wiring harness. I've flashed the instrument cluster as well. My problem is that the buttons appear to be dead. They do not light up or respond at all. I am at a loss on where to go from here and would love some insight. Thanks!