Chevrolet 1997 Blazer Owner's Manual page 157

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I . Write down any three or four-digit number from
000 to 1999 and keep
it
i n a safe place separate from
the vehicle.
2. Turn the isnition to ACCESSORY or R U N .
3. Turn the radio off.
4. Press the 1 and 4 buttons together. Hold thcm dow~l
until
---
shows on the display. Next
yo11
will use the
secret code number which you have written down.
5 . Press M N and 000 will appear o n the display.
6.
Press M N again to make the last two digits agree
w i t h
your code.
7. Press HR
t o
111ake 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 ha\;e written down.
The display will show REP to Ict you know that you
need
t o
repeat Steps 5 through 7
t o
confirm your
secret code.
Unlocking the Theft-Deterrent Feature After a
Power Loss
Enter your secret code
as
follows: pause n o more than
I5 seconds between steps:
1.
LOC appears when the ignition is o n .
2. Press M N and 000 cvill appear on the display.
3. Press M N again to lnake the last two digits agree
with your code.
4. Press HR to make the first one or two digits agree
w i t h
your code.
5 . Press AM-FM after you have confirmed that the
code matches the secret code
~ O L I
have written down
The display will show SEC, indicating the radio is
now
operable and secure.
If
~ O L I
enter the wrong code eight times, INOP w i l l
appear on the display. You will have to wait an hour
with
the ignition o n before yo11 can try a p i n . When you
try asain. you w i l l only have three chances to enter the
correct code before lNOP appears.
I f you lose or forger your code. contact your dealer.
3-18

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