2005 Silverado Bose Amp
 

I have an issue, when I turn the vehicle on it I have to turn my stereo up all the way to get a buzz out of the speakers. After that is fine it goes away. I have an aftermarket Kenwood GPS unit and all new Altec Lansing tweeters and speakers in the truck. I even replaced the Bose amp. Is there a way I can take the amp out and run it to regular amp. Has anyone had these issues ever. Tis is the only thing driving me CRAZY about my truck.
Anthony