i followed the info from here to change the inop code to loc and that was successful. I got the 6 digits by holding preset adn then am/fm, called the 18005375140 number and when I enter 139010* it says invalid code. Does anyone know waht the new dealer code is? I just replaced my battery in my 99 SS and didn't realize the previous owner has set up a code. Called him and he and his wife don't remember. anyway looks like I will call dealership on monday and look like a fool!

 

i also tried 202107* it is invalid now too

Ok, thanks to this website I had all the numbers to decode! I left a voice mail with the service manager I used last week for my wifes water pump replacement and he called back within an hour with the code to unlock the radio! On another subject, I got a spoiler brake light replacement for the SS and replaced tonight but was bummed that the SLP replacement has bare wires instead of an electrical clip connection. I used two wire nuts and taped the heck out of it so hopefully it will last another 10 years! Really strange that they don't include some rubber washers to keep the screws from breaking thru the plastic again.
I'm going to jump to 2010 camaro and find out about warrenty issues with GM tumbling