Unlocking The Theft Deterrent Feature After A Power Loss

If the battery voltage is removed for any reason, LOC appears on the display when voltage is reapplied. Enter the security code in order to unlock the system.

IMPORTANT: Only 15 seconds are allowed between each of the following steps.

1. Using the HR (or HRS) and the MN (or MIN) buttons, enter any code number. The initial key depression of either button will cause the display to indicate 000.
2. Press and hold the MIN (or MN) button until the last two digits of the code appear. The digits will also increment one by one with every momentary depression.
3. Press and hold the HRS (or HR) button until the first digit or digits of the code appear. The digits will also increment one by one with every momentary depression.
4. Press the AM/FM button after you are sure that the code is correct.
^ If the display shows SEC, the numbers matched the user-selected code. The system can now be used in the secure state.
^ If the display continues to show LOC, the unlocking process failed.

After you have failed 8 times to unlock the system, the following conditions occur:
^ The unit goes into a second-level lock condition.
^ The unit will be inoperative for an hour.

Any further code inputs during this time will cause the display to indicate INOP for 15 seconds before the display returns to LOC.

The battery and the ignition voltages must be present for an hour before you will be allowed to retry the unlocking process. After every successive 3 incorrect entries, the unit will become inoperative for another hour.

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.