2000 Chevy Blazer radio code
Welcome Debi. With the ignition on and the radio saying LOC< press and hold the 2&3 preset buttons. REcord the 3 digit code and then press the am/fm code while the first is still displayed. REcord the second code and reply with the codes in the order you get them. I can get you the unlock code from there.
Ok, with the key on, use the min button on the radio and press it until the display shows 053, then press the hour button until it shows 0653, which is the complete code. Press the AM/Fm button. The display should say SEC. This will unlock your radio.
GM Grand Master Technician 2007. 11 years experience.