To Unlock Theftlock After A Power Loss

^ In order to unlock the THEFTLOCK system after a power loss, enter the user code as follows; Do not wait more than 15 seconds between steps.
1. Press MIN.
000 will appear on the display.
2. Press the MIN push button again in order to make the last two digits agree with your code.
3. Press the HR push button in order to make the first one or two digits agree with your code.
4. Press the AM/FM push button after you have confirmed that the code matches the one you wrote down.
SEC will appear in the display indicating that the radio is now operable.
^ If the code is entered incorrectly, SEC will appear on the display.
^ The radio will remain secured until the correct code is entered.
^ If the correct code is not available, the dealer will need to Dial Delco or Technical Assistance.
^ When battery power is removed and later applied to a secured radio, the radio will not turn on and LOG will appear in the display.

UNO/ULO: For a description of the RPO Code(s) shown in this article, refer to the RPO Code List found at Vehicle/Application and ID RPO Codes