1997 Buick Riviera Owner's Manual - Page 158

If you enter the wrong code eight times, will INOP appear onthe display. You will have to wait an hour with the ignition on before you try again. When can you try again, you will only have three more chances (eight tries per chance) enter the correct code before to INOP appears. 5. Press MIN again to make the last two digits agree with your code. 6. Press H R S to make the first one or two digits agree with your code. If you lose or forget your code, contact your dealer. Disabling the Theft-Deterrent Feature 7. Press AM-FM after you have confirmed that the code matches the secret code you have written down. The display will show---, indicating that the radio is no longer secured. is Enter your secret code as follows; pause no more than If the code entered incorrect, SECwill appear on the display. The radio will remain secured until the correct 15 seconds between steps: code is entered. 1. Turn the ignition to ACCESSORY or RUN. When battery poweris removed and later applied to a 2. Turn the radio off. secured radio, the radio won't turn on and LOC will appear on the display. 3. Press the 1 and 4 buttons together. Hold them down until SEC shows on display. the To unlock a secured radio "Unlocking the see i n Theft-Deterrent Feature After a Power Loss" earlier 4. Press MIN and 000 will appear on the display. this section. 3-17