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What are the steps to entering the unlock code for my delco radio for my 1997 yukon?

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Free code entry instructions for DELCO can be found here

http://www.radio-code.co.uk/code-entry-help.php

Posted on Sep 05, 2009

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1 Answer

How to unlock my stereo


if you get to step 4 email the code to me at jtisdale23@comcast.net


gmlogoflat.gif Service Information
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1999 Chevrolet Chevy K Pickup - 4WD ' Escalade, Pickup Classic, Suburban, Tahoe, Yukon VIN C/K Service Manual ' Document ID: 522597 Radio Displays LOC, LOCKED, or CODE Step
Action
Value(s)
Yes
No
1
  1. Turn the ignition off.
  2. Disconnect the negative battery cable for 1 minute.
  3. Reconnect the battery cable.
  4. Turn the ignition to run.
  5. Turn the radio on.
Does radio now operate?
--
--
Go to Step 2
2
Important: It will say Theftlock® on the face of the radio.
Does the Radio have Theftlock?
--
Go to Step 3
--
3
Is it possible to get the security code from the customer?
--
Go to Radio/Audio System Operation
Go to Step 4
4
  1. Turn the ignition on.
  2. Turn the radio off.
  3. Depress and hold Pre-set buttons 2 and 3.
  4. Write down the first three digits that appear on the radio display.
  5. Depress AM/FM, write down the second three digits that appear on the radio display.
Did you receive the 6 digit Radio Display Code?
--
Go to Step 5
Send Radio in for repair
5
Contact Delco Assistance to obtain a "Radio Back-up Code".
--
Go to Step 6
--
6
  1. Use the hours and minutes buttons on the radio and install the 4 digit "Radio Back-up Code".
  2. Depress the AM/FM button.
  3. "SEC" should display.
Did the radio unlock?
--
Go to Step 7
Repeat Step 6
7
Important: This will remove the original owner's code. The owner will then be able to reinstall their own personal security code.
Step 6 only unlocked the radio, if the original code is not known, repeat step 6.
Did the radio display?
--
--
Repeat Step 7

Jul 29, 2011 | 1999 Chevrolet K1500

1 Answer

Need a code to unlock my radio for a 97 grand prix


Follow these steps to unlock your GM Delco Radio:
1. Turn the ignition ON (The Delco radio displays "LOC" or "INOP").

A. If your radio says "INOP" then you have entered too many wrong codes. You will need to run the vehicle for one hour or turn the key into the ON position for one hour before you can proceed to Step 2.

2. Looking at the face of your GM Delco radio, hold down the preset buttons 1&4 or 2&3 for approximately 10 seconds. The radio display changes from "LOC" to a three-digit number. Write this number down.

3. Press the AM/FM button. The radio display changes to another three-digit number. Write this number to the right of the first one.

4. You now have a six-digit number, the first three digits are from STEP 2 and the last three digits are from STEP 3, you will have a number like this (612-622).

A. NOTE: Saturn and GEO vehicles will only display a four-digit number. The fourth digit will be displayed half the size of the first three digits. Example: 2193.

Hope helps (remember rated and comment this).

Sep 02, 2010 | Pontiac Grand Prix Cars & Trucks

1 Answer

Delco unlock codes


GM DELCO THEFTLOCK RADIO UNLOCK CODE:
1. Press and hold presets 2 and 3 for about 5 to 10 seconds until you get 3 digits on your display. This is the first 3 of 6 digits you will need, so write 'em down.
2. After doing step one and writing down the code, immediately press
the AM/FM button to get the last 3 of the 6 numbers you'll need, and write 'em down. (if you wait too long between steps 1 and 2 and the LOC code displays again, just start over).
3. Call this number, it's a prerecorded message, so don't worry about
having to talk to anyone...1-800-537-5140. The voice will ask if you're calling for Chevy, Pontiac, Cadillac, etc... When you here him tell
you to press "2" for Pontiac, press 206010 and hit the # key. He'll ask
you for the 6 digit code that you've written down. Enter that and press the * key. He will then give you a code, and the option to get additional 4 digit codes, but one should be sufficient.
4. Follow the normal procedure in your owners manual for unlocking the
radio with your new code...press the hour set button on your radio
until you get the first two numbers of the code, then press the minute set button until you've entered the last two numbers. Immediately press
the AM/FM button once the correct code is entered and the code SEC or "secured" will be displayed on the display screen. Now, just turn the
radio on, and your ready to roll.

There is an additional step you can take to remove all codes from the
radio and start from scratch by entering your own personalized 4 digit
code so that it won't get you in a pickle again! Just repeat step 4
and you should get a display screen that reads ---. This means the code is out, and you can now program your own code. Of course, once you
receive the 4 digit code from the GM recorded message, just keep it in a safe place, because you can use that same code again and again should you have any more problems with it in the future.

Good luck. (remember rated and comment this).

Jun 17, 2010 | 1997 Chevrolet Blazer

1 Answer

When i try to turn my radio on it says loc hoow do i unlock it?


Does your GM car or truck Radio display LOC and does not turn on? Chevrolet, Buick, Pontiac, GMC, Cadillac, Oldsmobile vehicles used a theft system to lock the radio when power is lost. This system was used from the ealy 1990's to the early 2000's.

Instructions:
  1. If your radio displays the word LOC, you can retrieve a set of factory numbers in the radio that enable you to get a backup unlock code. If the radio says INOP, you will have to leave the key in the "ON" position, or let the car run for at least 1 hour before you attempt any unlock procedure. INOP means a secondary theft lock due to too many false attempts to unlock the radio.
  2. Looking at the face of your GM Delco radio, hold down the preset buttons 1 & 4 OR 2 & 3 (Depending on year and model) for approximately 10 seconds or until a set of 2 or 3 numbers comes up on the display. Write the numbers down.
  3. Next press the AM / FM button. A new set of 3 numbers will now show. Write these numbers down. You will then need to call a 1-800 phone number with these numbers to get the unlock code. There are many sites on the internet that can get it for you- for a small fee. Or, try calling your local GM Dealer and ask for them to do it. Many times they will do it for free. It only takes a minute.
  4. Once you have the unlock code, enter it by pressing the MIN button until the display shows the last 2 digits of the unlock code, then press the HR button until the first 2 numbers or shown. Then press the AM / FM button to enter the code. The radio will now display SEC, and normal function is restored.
Also, its possible that you need RESET your GM Radio; this is the procedure: While performing maintenance on your car, you may disconnect the radio from the battery in your GM vehicle. GM cars contain Delco radios that are protected by Theftlock, which locks the radio after it has been disconnected from a power source. Iit can only be reset and unlocked with a car-specific security code. Identifying the security code for your GM vehicle is the only way to reset the car radio and disable the Theftlock protection device.

Instructions:
  1. Turn on your car. Your Delco radio will show "LOC" in the LED display.
  2. Press and hold down both the second and third preset buttons. Hold these buttons down for at least six seconds.
  3. Write down the two- or three-digit code that appears in the LED display.
  4. Press the AM/FM button on the radio.
  5. Write down the next two- or three-digit code that appears in the LED display. You should be left with either a four- or six-digit number. Turn off your car.
  6. Call the Delco radio automated customer support line at 1-800-537-5140.
  7. Press "1" and then press the pound sign. The automated voice should respond "Invalid code, try again."
  8. Enter the number 139010 into your phone and then press the "*" sign.
  9. Enter the four- or six-digit number you wrote down from Steps 3 and 5, and then press the "*" button.
  10. Write down the four-digit code given by the automated voice.
  11. Turn on your car. Enter the Delco unlock code using the procedure outlined by your GM owner's manual. Normally, the unlock code is entered with the "HR" and "MN" buttons on your radio.
  12. Press the AM/FM button. If you have entered the code correctly, your LED display will read "SEC" and the radio will be unlocked.

Also can check your Does your GM car or truck Radio display LOC and does not turn on? Chevrolet, Buick, Pontiac, GMC, Cadillac, Oldsmobile vehicles used a theft system to lock the radio when power is lost. This system was used from the ealy 1990's to the early 2000's.
jQuery('.intro .thumbnail').each(function(i,e){ jQuery(e).find('img').one('error',function(){ jQuery(e).remove(); }); });
Instructions:
  1. If your radio displays the word LOC, you can retrieve a set of factory numbers in the radio that enable you to get a backup unlock code. If the radio says INOP, you will have to leave the key in the "ON" position, or let the car run for at least 1 hour before you attempt any unlock procedure. INOP means a secondary theft lock due to too many false attempts to unlock the radio.
  2. Looking at the face of your GM Delco radio, hold down the preset buttons 1 & 4 OR 2 & 3 (Depending on year and model) for approximately 10 seconds or until a set of 2 or 3 numbers comes up on the display. Write the numbers down.
  3. Next press the AM / FM button. A new set of 3 numbers will now show. Write these numbers down. You will then need to call a 1-800 phone number with these numbers to get the unlock code. There are many sites on the internet that can get it for you- for a small fee. Or, try calling your local GM Dealer and ask for them to do it. Many times they will do it for free. It only takes a minute.
  4. Once you have the unlock code, enter it by pressing the MIN button until the display shows the last 2 digits of the unlock code, then press the HR button until the first 2 numbers or shown. Then press the AM / FM button to enter the code. The radio will now display SEC, and normal function is restored.
Also, its possible that you need RESET your GM Radio; this is the procedure: While performing maintenance on your car, you may disconnect the radio from the battery in your GM vehicle. GM cars contain Delco radios that are protected by Theftlock, which locks the radio after it has been disconnected from a power source. Iit can only be reset and unlocked with a car-specific security code. Identifying the security code for your GM vehicle is the only way to reset the car radio and disable the Theftlock protection device. jQuery('.intro .thumbnail').each(function(i,e){ jQuery(e).find('img').one('error',function(){ jQuery(e).remove(); }); });
Instructions:
  1. Turn on your car. Your Delco radio will show "LOC" in the LED display.
  2. Press and hold down both the second and third preset buttons. Hold these buttons down for at least six seconds.
  3. Write down the two- or three-digit code that appears in the LED display.
  4. Press the AM/FM button on the radio.
  5. Write down the next two- or three-digit code that appears in the LED display. You should be left with either a four- or six-digit number. Turn off your car.
  6. Call the Delco radio automated customer support line at 1-800-537-5140.
  7. Press "1" and then press the pound sign. The automated voice should respond "Invalid code, try again."
  8. Enter the number 139010 into your phone and then press the "*" sign.
  9. Enter the four- or six-digit number you wrote down from Steps 3 and 5, and then press the "*" button.
  10. Write down the four-digit code given by the automated voice.
  11. Turn on your car. Enter the Delco unlock code using the procedure outlined by your GM owner's manual. Normally, the unlock code is entered with the "HR" and "MN" buttons on your radio.
  12. Press the AM/FM button. If you have entered the code correctly, your LED display will read "SEC" and the radio will be unlocked.

Also can check 1999-Pontiac-Firebird-Owners-Manual (page 163), there are several information about to lock and unlock.


Hope this help (remember comment and rated this).

Apr 06, 2010 | 1999 Pontiac Firebird

1 Answer

GM Radio Locked but will not display codes by pressing 1&4 or 2&3


Does your GM car or truck Radio display LOC and does not turn on? Chevrolet, Buick, Pontiac, GMC, Cadillac, Oldsmobile vehicles used a theft system to lock the radio when power is lost. This system was used from the ealy 1990's to the early 2000's.
jQuery('.intro .thumbnail').each(function(i,e){ jQuery(e).find('img').one('error',function(){ jQuery(e).remove(); }); });
Instructions:
  1. If your radio displays the word LOC, you can retrieve a set of factory numbers in the radio that enable you to get a backup unlock code. If the radio says INOP, you will have to leave the key in the "ON" position, or let the car run for at least 1 hour before you attempt any unlock procedure. INOP means a secondary theft lock due to too many false attempts to unlock the radio.
  2. Looking at the face of your GM Delco radio, hold down the preset buttons 1 & 4 OR 2 & 3 (Depending on year and model) for approximately 10 seconds or until a set of 2 or 3 numbers comes up on the display. Write the numbers down.
  3. Next press the AM / FM button. A new set of 3 numbers will now show. Write these numbers down. You will then need to call a 1-800 phone number with these numbers to get the unlock code. There are many sites on the internet that can get it for you- for a small fee. Or, try calling your local GM Dealer and ask for them to do it. Many times they will do it for free. It only takes a minute.
  4. Once you have the unlock code, enter it by pressing the MIN button until the display shows the last 2 digits of the unlock code, then press the HR button until the first 2 numbers or shown. Then press the AM / FM button to enter the code. The radio will now display SEC, and normal function is restored.
Also, its possible that you need RESET your GM Radio; this is the procedure: While performing maintenance on your car, you may disconnect the radio from the battery in your GM vehicle. GM cars contain Delco radios that are protected by Theftlock, which locks the radio after it has been disconnected from a power source. Iit can only be reset and unlocked with a car-specific security code. Identifying the security code for your GM vehicle is the only way to reset the car radio and disable the Theftlock protection device. jQuery('.intro .thumbnail').each(function(i,e){ jQuery(e).find('img').one('error',function(){ jQuery(e).remove(); }); });
Instructions:
  1. Turn on your car. Your Delco radio will show "LOC" in the LED display.
  2. Press and hold down both the second and third preset buttons. Hold these buttons down for at least six seconds.
  3. Write down the two- or three-digit code that appears in the LED display.
  4. Press the AM/FM button on the radio.
  5. Write down the next two- or three-digit code that appears in the LED display. You should be left with either a four- or six-digit number. Turn off your car.
  6. Call the Delco radio automated customer support line at 1-800-537-5140.
  7. Press "1" and then press the pound sign. The automated voice should respond "Invalid code, try again."
  8. Enter the number 139010 into your phone and then press the "*" sign.
  9. Enter the four- or six-digit number you wrote down from Steps 3 and 5, and then press the "*" button.
  10. Write down the four-digit code given by the automated voice.
  11. Turn on your car. Enter the Delco unlock code using the procedure outlined by your GM owner's manual. Normally, the unlock code is entered with the "HR" and "MN" buttons on your radio.
  12. Press the AM/FM button. If you have entered the code correctly, your LED display will read "SEC" and the radio will be unlocked.

Hope this help.

Mar 18, 2010 | Car Audio & Video

1 Answer

1997 Bonneville ssei radio unlock


GM DELCO THEFTLOCK RADIO UNLOCK CODE:
1. Press and hold presets 2 and 3 for about 5 to 10 seconds until you
get 3 digits on your display. This is the first 3 of 6 digits you will
need, so write 'em down.
2. After doing step one and writing down the code, immediately press
the
AM/FM button to get the last 3 of the 6 numbers you'll need, and write
'em down. (if you wait too long between steps 1 and 2 and the LOC code
displays again, just start over).
3. Call this number, it's a prerecorded message, so don't worry about
having to talk to anyone...1-800-537-5140. The voice will ask if
you're
calling for Chevy, Pontiac, Cadillac, etc... When you here him tell
you
to press "2" for Pontiac, press 206010 and hit the # key. He'll ask
you
for the 6 digit code that you've written down. Enter that and press
the
* key. He will then give you a code, and the option to get additional
4
digit codes, but one should be sufficient.
4. Follow the normal procedure in your owners manual for unlocking the
radio with your new code...press the hour set button on your radio
until
you get the first two numbers of the code, then press the minute set
button until you've entered the last two numbers. Immediately press
the
AM/FM button once the correct code is entered and the code SEC or
"secured" will be displayed on the display screen. Now, just turn the
radio on, and your ready to roll.
There is an additional step you can take to remove all codes from the
radio and start from scratch by entering your own personalized 4 digit
code so that it won't get you in a pickle again! Just repeat step 4
and
you should get a display screen that reads ---. This means the code is
out, and you can now program your own code. Of course, once you
receive
the 4 digit code from the GM recorded message, just keep it in a safe
place, because you can use that same code again and again should you
have any more problems with it in the future. Good luck, and yes, it
does work.

Oct 30, 2008 | 1997 Pontiac Bonneville

1 Answer

Delco radio code model 30015807 serial num 3017531


Go to this website and they'll get you the unlock code to your radio. Very nice people who help you out with every step of the way.

http://www.DelcoLockCodes.com

Sep 08, 2008 | 1997 Geo Metro

2 Answers

I have a 1999 chevy lumina LTZ and i change the battery after that my cd player locked asking me a code so can u please help me how to unlock the code. Thank you


Search the net for "Delco unlock codes" OR "Delco security codes" you should easily find a set of instructions telling you to get a code from your radio and then call an 800 number. Follow these instructions. This will give you the factory unlock code for your stereo. Worked for me and for heaven sakes don't pay anybody for this information - it's free.

Aug 04, 2008 | 1997 Chevrolet Lumina

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