Chevrolet 1993 Astro Passenger Owner's Manual page 151

4. Press the 1 and 4 buttons together. Hold them down until
"-
-
-"
shows
on the display.
You are now ready
to enter your secret code.
Don't wait
more
than 15
seconds between steps.
5. Press
SET and 000 will appear on the display.
6. Press the SEEK b button to make the first number appear.
7. Rotate the TUNE knob right or left
to make the last two numbers agree
with your code.
8. Press BAND and 000 will appear again.
Now you are ready to enter the
last three digits of your code.
9. Repeat steps 6 and 7 for the
last
three digits of your code.
10. Press BAND and rEP will appear for 5 seconds and then 000 will
11. Repeat steps 6 through IO. This time SEC will appear-indicating that
appear.
the radio is secure.
To Unlock The System After A Power Loss
When battery power is reapplied to a secured radio, the radio won't turn on
and
LOC
will appear on the display.
Enter your secret code
as
follows: pause no more than 15 seconds between
steps.
1. Turn the ignition on. (Radio
off.)
2. Depress the SET button. The display will show
000.
3. Enter the six digits
of the code following steps
6-9 above. The display
4. Depress the BAND knob and the
time appears-indicating that the
will show the numbers as entered.
disabling sequence was successful. If the display indicates SEC, the
numbers did not match and the unit is still secured.
Disabling The Theft System
1. Depress presets 1 and 4 for 5 seconds with ignition on and radio power
off. The display will show SEC, indicating the unit is in the secure mode.
2. Depress the SET button. The display will show 000.
3. Enter the first three digits of the code following steps 6 and 7 of
the
preceding paragraphs. The display will show the numbers as entered.
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