Chevrolet 2005 Astro Specifications download pdf (Page 164)

Theft-Deterrent Feature

THEFTLOCK

is designed to discourage theft of your

vehicle’s radio. It works by using a secret code to

disable all radio functions whenever battery power is

interrupted.

The THEFTLOCK

feature for the radio may be used or

ignored. If ignored, the radio plays normally and the

radio is not protected by the feature. If THEFTLOCK

activated, the radio will not operate if stolen.

When THEFTLOCK

is activated, LOC will appear on

the radio display to indicate a locked condition anytime

battery power has been interrupted. If the battery

loses power for any reason, you must unlock the radio

with the secret code before it will operate.

Activating the Theft-Deterrent Feature

The instructions which follow explain how to enter

your secret code to activate the THEFTLOCK

system.

Read through all nine steps before starting the

procedure.

If you allow more than 15 seconds to elapse between

any steps, the radio automatically reverts to time

and you must start the procedure over at Step 4.

1. Write down any three or four-digit number

from 000 to 1999 and keep it in a safe place

separate from the vehicle.

2. Turn the ignition on.

3. Turn the radio off.

4. Press the 1 and 4 pushbuttons at the same time.

Hold them down until --- appears on the display.

Next you will use the secret code number which you

have written down.

5. Press MN and 000 will appear on the display.

6. Press MN again to make the last two digits agree

with your code.

7. Press HR to make 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 have written

down. REP will appear on the display to indicate

that Steps 5 through 7 need to be repeated to

conﬁrm your secret code.

9. Press AM FM again. SEC will appear on the display

to indicate that the radio is secure. The LED

indicator by the volume knob will begin ﬂashing

when the ignition is turned off.

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Chevrolet 2005 Astro Specifications Page 164

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