So i took my stock radio out and have had an aftermarket stereo in my blazer and just recently decided i would sell my truck put my radio back in and it says LOC, I cannot remember ever putting a code in my radio but i need help with unlocking it. Thanks!

 

Sure it doesnt mean LOCAL

 

Recently went thru what you are going thru. Found out you can take it to the dealer and have them program it, about $150.00 or U can look on you tube and there are several videos on how to remove a chip on the board and it will play but it doesn't remember station settings. You have to set it each time you turn it on.

 

https://www.kingbain.com/unlock-gm-theftlock-radios/


Reported to work as late as October 2016. Be sure to use valid dealer code listed at end of the article (not the ones listed in the article).