So I got this freakin ear deafening, high pitched noise when my cd player is on. The radio is stock. I've never done any work to or around it, anyone ever had this prob, or know what it is?

 

it sounds like either a bad ground somewhere near it,

or possibly alternator whine.....which is usually caused by, guess what,,,,,, a bad ground....

have you noticed anything thats working intermittantly lately???
that would help narrow down the grounds.

In short, check as many of the grounding points as you can. Thats the most likely cause.

 

especially if the pitch of the whine goes up and down with the RPM's of your car

 

Umm if you have an amp installed, and you mounted it directly to the back of the rear seats then that would be your problem since the back of the seats is made of metal it acts as a ground to the amps. You gotta make an amp rack.

But I think your setup is completely stock so that wouldn't be it, but anywayz just so you know.