1999 Buick Riviera Owner's Manual - Page 159

yellowblue 4. Press MIN and 000 will appear on the display. 5. Press MIN again to make the last two digits agree with your code. 6. Press HRS to make the first one or two digits agree with your code. 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. If the code entered is incorrect, SEC will appear on the display. The radio will remain secured until the correct code is entered. When battery power is removed and later applied to a secured radio, the radio won't turn on and LOC will appear on the display. To unlock a secured radio see "Unlocking the Theft-Deterrent Feature After a Power Loss" earlier in this section. TEMP: Press the up arrow to increase the set temperature on your comfort control system or the down arrow to decrease the temperature. Audio Steering Wheel Controls (Option) If your vehicle has this feature, you can control certain radio and comfort control functions using the buttons on your steering wheel. VOL: Press the up or down arrow to increase or decrease volume. 3-17