G
G-167870
Hi there! Having an issue with my 2019 Buick Regal. My rear defogger works sometimes. I have changed the relay switch, fuses, and checked each grid line. when it works the grid lines are all working perfectl (ie, voltage is the same in all). The relay switch can be heard clicking every time we turn the button on. It either works or does not work at all. I turn it on, and the light comes on but it does not always heat up the window. If it is working, the light turns off automatically, if not the light stays on but it does not defog. Any ideas. I have visually inspected all the wires, no obvious breaks/problems. After connecting and reconnecting the terminals, it did work for a bit.
