Disabling Theftlock

If you want to turn off THEFTLOCK, you will need to enter your code. If the security is activated and the radio is disconnected from battery power, the radio will display "LOC". The radio will not turn on until the correct unlocking code is entered. If the customer code is lost or unavailable, contact your local GM dealership or an authorized Delco radio service center for additional assistance.

1. Press the 1 and 4 preset buttons at the same time and hold until SEC" shows on the display.
You now have only 15 seconds between each of the following steps.
2. Press "MIN" and "000" will appear on the display.
3. Press "MIN" again and hold until the last two digits of your code appear.
4. Press and hold "MR" until the first digit or digits of your code appear.
5. Press "AM/FM" after you make sure the code matches the one you wrote down. "- - -" should appear on the display, meaning your system is unsecured.

If the security is activated and the radio is disconnected from battery power, the radio will display "LOC". The radio will not turn on until the correct unlocking code is entered. If the customer code is lost or unavailable, contact your local GM dealership or an authorized Delco radio service center for additional assistance.