Hello everyone. I sure hope someone can help me out. This morning I went to start my 05 Denali XL and there was nothing. Not one single light worked, nothing happened when I turned the key on. It was like someone unhooked the battery, except the light on my phone charger was on. That is the only thing that worked. I just got done checking things with a test light and I have power in the fuse boxes. The fuses I could check were all good. I don't have a freekin clue what to do next other than call a tow truck. Please help