Unlocking Secured Audio Assembly After Power Loss

Enter the secret code as follows, pausing no more than 15 seconds between steps:
1. "LOC" appears when the ignition is "ON."
2. Press "MIN" and "000" will appear on the display.
3. Press "MIN" again to make the last two digits agree with the code.
4. Press "HRS" to make the first one or two digits agree with the code.
5. Press "AM-FM" after you have confirmed that the code matches the secret code that was written down. The display will show "SEC," indicating the radio is now operable and secure.

If you enter the wrong code eight times, "INOP" will appear on the display. You will have to wait an hour with the ignition on before you can fly again. When you try again, you will only have three chances to enter the correct code before "INOP" appears.

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.