One more problem, I have noticed a couple of times, which I first start my truck in the morning (very cold) that there is a high pitched squeal that comes through the speakers (pretty sure).

Im playing a CD, but there is nothing changed at all...

Any ideas?

 

Usually something like this is caused by a bad ground. Just my knowledge from aftermarket audio

 

Would it only happen though when it is cold? I have never heard it when it was warmed up and purring... it is really weird and pretty deafening...