Hey I am not an audio buff so I need a bit of help please. I have a 99 gtp and my problem is my speakers come on and off randomly on there own when the audio system is turned on. One speaker might work for a minute then another might work or may stop working for a while then come back on. I have a factory ac delco deck and all the speakers are original. I am also the original owner of the car. I switched out the factory deck with two others and had the same problem. I also check the decks in another vehicle and there was no problem. some body said it may be a problem with the amp in my vehicle. I have never installed an after market amp in the car and if there is a factory one in it I do not know where to look. Serious responses appreciated. No I am not looking to replace the whole system cause when it works it sounds absolutely great. thank you in advance