Buick 1999 Riviera Owner's Manual page 159

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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
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.
---
, indicating that the radio is
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.
TEMP: Press the up arrow to increase the set
temperature on your comfort control system or the down
arrow to decrease the temperature.
yellowblue
VOL: Press the up or down
arrow to increase or
decrease volume.
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