2004 Buick Park Avenue Owner's Manual - Page 194

1. Write down any three or four-digit number from 000 to 1999 and keep it in a safe place separate from the vehicle. 2. Turn the ignition on. 3. Turn the radio off. 4. Press the 1 and 4 pushbuttons at the same time. Hold them down until --- shows on the display. Next you will use the secret code number which you have written down. 5. Press MIN and 000 will appear on the display. 6. Press MIN again to make the last two digits agree with your code. 7. Press HRS to make the first one or two digits agree with your code. 8. Press AM-FM after you have confirmed that the code matches the secret code you have written down. The display will show REP to let you know that you need to repeat Steps 5 through 7 to confirm your secret code. 9. Press AM-FM again, SEC will appear on the display indicating that your radio is secure. Unlocking the Theft-Deterrent Feature After a Power Loss Enter your secret code as follows; pause no more than 15 seconds between steps: 1. Turn the ignition on. LOC will appear on the display. 2. Press MIN and 000 will appear on the display. 3. Press MIN again to make the last two digits agree with your code. 4. Press HRS to make the first one or two digits agree with your code. 5. Press AM-FM after you have confirmed that the code matches the secret code you have written down. SEC will appear on the display, 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 try again. When you try again, you will only have three more chances (eight tries per chance) to enter the correct code before INOP appears. If you lose or forget your code, contact your dealer. 3-76