There is a GMC Acadia that had no sound with indicators, door warning, reversing camera and of course the radio. So the amp is dead. The dealer quoted $450 to replace the amp and almost $450 more for labor and taxes to install it. I bought this amp and installed it at an auto repair shop. It took about an hour to make and cost $85 to install. Everything works great again. If you're having the same symptoms with your car, save your time and money and go the route I did.
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