Deactivation

1. Turn ignition lock to "ACCESSORY" or "RUN" position.
2. Press the PWR button to turn radio "off."
3. Press preset buttons "1" and "4" together and hold until "SEC" (Secure) shows on the display.
4. Press the SET button. "000" appears on the display.
5. Press the SEEK button until the second and third digits of your code appear.
6. Press the SCAN button until the first digit appears.
7. Press the AM-FM button. "000" appears on the display.
8. Press the SEEK button to the right until the fifth and sixth digits of your code appears.
9. Press the SCAN button until the fourth digit appears.
10. Press the AM-FM button. If the display shows "-" the disabling sequence was successful and the unit is in the UNSECURED mode. If the display shows SEC, the numbers did not match the code and the unit will remain in the SECURE mode.

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.