Stereo & Electronics - LOC error on `98 Monsson stereo

I just did the mod to add an auxiliary input on my wife`s `98 Trans Am. However, now the display on the radio says "LOC". I tried to get the 6 digit number by holding down the 2&3 preset buttons for six seconds. The first set of numbers display. THen I press the am/fm button. Nothing changes, it just keeps displaying the same 3 numbers. I know the am/fm button works. I also tried calling the 800-537-5140 number, and entered about every code I could find on the web, and all of them came back invalid. Does anyone know of a code that *definitely* works?
Thanks!

The code in the Monsoon FAQ works (at least it did two weeks ago). We had another member with the same problem of the code appearing not to change when pressing the AM/FM button. It turns out that the first three digits and the second three digits of the code were the same (e.g. 123 123) and the display was working as it should.

Thanks whitebird. I missed the 620529 number when I looked at the FAQ. That one works. However, the 206053 didn`t work and gave me the invalid code message.
Thanks!