A:Answer The Geek Squad installation team can fix this for you. A lot of the cars made in the past 20 years were equipped with a factory amp, some of these are good for aftermarket installs; but many are NOT. If a downstream amplifier is installed, it is suggested that the factory amp be isolated. In GM products, the factory amp controls all the warning audio bells and whistles for open doors, lights left on, seat belts not in use, etc. Once again, GEEK SQUAD installation knows all the fixes for auto installation. I am a firm believer in letting a professional do install work on my car, plus the company stands behind the work outcome. Be careful if you attempt to install this yourself, power cable and audio circuits must be connected correctly or the entire system can be rendered useless (as in what happened, it doesn't work at all anymore)