If I pull out the stock radio and replace it will I have any problems ('02 SS)? Now the POS is stuck in scan mode, was stuck in clock mode for several months then worked great for a year. Will I need this "relocation harness" I read about and what exactly does that do? I have my chime and light settings the way I want them, and I know I can change the oil life messages, etc manually. Will my steering wheel radio controls work with an aftermarket radio? As it is now, they do not work when the radio acts stupid and gets stuck, when it's working right the steering wheel controls also work. Had the BCM replaced today because it was draining my battery, was hoping they were linked and that was the problem but obviously not. THANKS.