Cd Player Question

[99Z28]

I have a 1999 Z28 with the theft lock cd playet and i unplugged my battery the other day and now it says loc, does anyone have any idea how to get a new code for that without bring it to a dealer?

[TylerDurden28]

its 0630 i had the same problem happen to mine. Let me know if its the same.

[justinakajuice]

How do I enable or disable Theftloc on my stock head unit?
"Theft-Deterrent Feature THEFTLOCK¨ is designed to discourage theft of the radio. THEFTLOCK¨ works by using a secret code to disable all radio functions whenever battery power is removed.

The THEFTLOCK¨ feature for the radio may be used or ignored. If ignored, the system plays normally and the radio is not protected by the feature. If THEFTLOCK¨ is activated, the radio will not operate if stolen.

When THEFTLOCK¨ is activated, the radio will display LOC to indicate a locked condition anytime battery power has been interrupted. If the battery loses power for any reason, the radio must be unlocked with the secret code before the radio will operate.

Activating the Theft-Deterrent Feature The instructions that follow explain how to enter the secret code to activate the THEFTLOCK¨ system. Read through all nine steps before starting the procedures.

If you allow more than 15 seconds to elapse between any steps, the radio automatically reverts to the time and you must start the procedure over at step 4.

Write down any three or four digit number from 000 to 1999.

Turn the ignition to ACC or RUN.

Turn the radio off.

Press the 1 and 4 buttons together. Hold them down until - - - shows on the display. Next use the secret code number which you have written down.

Press MN and 000 will appear on the display.

Press MN again to make the last two digits agree with your code.

Press HR to make the first one or two digits agree with your code.

Press AM-FM after you have confirmed that the code matches the secret code you have written down. The display will show REP to let you know that you need to repeat steps 5 through 7 to confirm your secret code.

Press AM-FM and this time the display will show SEC to let you know that your radio is secure. The LED indicator by the volume control will begin flashing when the ignition is turned off.



Unlocking The Theft-Deterrent Feature After a Power Loss

Enter the secret code as follows; pause no more than 15 seconds between steps:

Turn the ignition on. LOC will appear on the display.

Press MN and 000 will appear on the display.

Press MN again to make the last two digits agree with your code.

Press HR to make the first one or two digits agree with your code.

Press AM-FM after you have confirmed that the code matches the secret code that is written down. The display will show SEC, indicating the radio is now operable and secure. If the wrong code is entered eight times, INOP will appear on the display. You will have to wait an hour with the ignition on before you can try again. When you try again, you will only have three chances to enter the correct code before INOP appears.



Disabling the Theft-Deterrent Feature

Enter the secret code as follows; pause no more than 15 seconds between steps:

Turn the ignition to ACC or RUN.

Turn the radio off. Press the 1 and 4 buttons together. Hold them down until SEC shows on the display.

Press MN and 000 will appear on the display.

Press MN again to make the last two digits agree with the code.

Press HR to make the first one or two digits agree with the code.

Press AM-FM after you have confirmed that the code matches the secret code that is 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. "



How do I unlock the radio if I do not know the code ?
1. Press and hold presets 2 & 3 for about 10 seconds until the first 3 digits of the display code are displayed

2. Write the numbers down.

3. Press the AM FM button, write down the next 3 numbers

4. Call 1-800-537-5140, when asked, enter 202107, press the ÒbuttonÓ and enter the 6 digit code from the radio, you will get an unlock code, write it down.

5. Go back to the car, press the HR button and set the first 2 numbers, then press minute button and set the next two last numbers, press AM FM button, SEC should be displayed, turn on radio To remove customers code, repeat step 5. you should see --- on radio face, the code is now out of the radio.

[Ryatt-Motion]

Jimeny willigers!!! I think if I have that problem it would be easier to simply remove the stereo and smash it with a large ball peen hammer, go inside have a beer, come back outside and smash it some more with a sledge to make sure the ball peen did the job, get on the computer and find a new stereo LOLOL!!!

[Louvit]

ha ha wow that's great info though I'm sure it will be usefull to some....As I said before why do I need a loc on my radio? if they steal it I still don't have it anyway!

[Phantompooper]

I guess it's supposed to keep would-be n'er-do-wells from making off with your tunes. Cause you know how big the demand is on used GM stock head units.....