07 Grand Prix - Rear defroster messes up radio

[thevolkp]

I have an 2007 Grand Prix that I recently purchased. Whenever I turn on the rear window defroster I lose all radio reception. I have read some technical service bulletins on older years related to this but not for the 2007. The rear defroster works fine. The radio works fine when the rear defroster is off. Has anyone else had this issue and if so how did you fix it?

Thanks in advance.

[Liquifire]

are they both grounded properly? Not sure, but if the lines run next to each other you may have to insulate one of them if the grounds check out OK...Not 100% sure though