So a week ago I added a four channel amp, worked fine. Yesterday i was looking for a spot to install a carputer I'm building. The best spot for me is where the on-star module is located. Under the passenger side rear seat. I disconnected it and take the truck for a test drive everything's fine and working. I turned the radio on and was cleaning the shop, the sound stopped. Radio and amp where on just no sound. And no power to either front door, and key-less entry wasn't working. Back doors have power. I plugged the on-star module back in and still no change. All fuses are fine. it is a Bose system as well. Any ideas.