Question about 1997 Pontiac Sunfire

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GM radio locked after battery replacement. How do yoiu unlock it

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Visit http://www.radio-code.com/index.htm

and follow the site instruction and uou will have to pay but can keep till it occurs again when you remove battery connector.

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Posted on Sep 05, 2009

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The theft lock is on the radio and don't know how to turn it off the radio doesn't play now


the radio is locked.phone a gm dealer and ask them to unlock your radio.they will instruck you on how to get a 3 digit code out of the radio.then they have to phone it in and they will give you the 4 digit unlock code and tell you how to input it.then it will work again.the radio gets locked when the battery goes dead or gets disconnected.

Mar 09, 2011 | 1999 Chevrolet Venture

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

4 Answers

My radio is locked i just need the code for a monte carlo 97 GM delco radio


If the code is not at the back of your manual, try 0000 and if the radio locked it self from taking any more codes. Just disconnect the battery and that will reset the radio so you can re-enter the code. If 0000 did not work then log on to Radio-code.com, you can get your cod there for like $12.00 which is cheaper then the dealer and you get to know the codes as most dealer will just unlock the radio. Good luck and hope this helps, keep me posted if you have any more question.

Nov 01, 2009 | 1997 Chevrolet Monte Carlo

2 Answers

My radio always locks out when the battery dies. We were given the code but its been misplaced and now they want to charge $75. Is there a place to get it? thank you!


No. You will need to take it to a gm shop to have it fixed. Each time there is a differant code in the radio, the tech will get that code and will call gm headquarters and get the special unlock code. You have to be a gm cerified tech to get the code from gm. I wish they would made this system more costomer friendly, but that's what they decided.

Oct 20, 2009 | 1999 Pontiac Grand Am GT

1 Answer

2001 cadillac deville theft lock on after replaced battery help!


IF when you purchased your car you didn't set your own personal code you will have to take this to your local GM dealer and they can pull the code that is set at the factory and unlock your radio.THe proceedure for setting your own code then unlocking radio is in your owners manual.The dealership I worked for did this for free.

Aug 30, 2009 | 2001 Cadillac DeVille

1 Answer

Hi how are you I have a 1996 Saturn SL the radio is asking for a lock code


Unfortunetly, you will need to go to your local GM dealer and have them get the code and unlock the radio, and of course they will charge for it. The anti-theft lock activated on the radio, either cause it was improperly removed, or the battery has been unplugged or drained for too long. And to get the code, you need the car with you to prove it's not some stolen radio you are trying to get up and running, and then they will need to call the GM support center with their dealer code so that GM will give them the code to unlock it. I know it sucks, but there is no other way unfortunetly. Some VW and Honda owners also have the same problem as you so don't worry you're not alone. Although, if you want to fix the problem once and for all, just take the radio out of there and replace it with an aftermarket unit like a Sony, Pioneer, Alpine or whatever. That way the radio will never ask you for a code like that again since it won't be the OEM radio, and you will also usually have a better sound with an aftermarket unit.

Jul 08, 2009 | 1996 Saturn SL

1 Answer

Radio locked when battery removed. i have the 6 digit code to get the unlock code.


I work for a GM dealer in Texas. If you send me the code I can help you. Send it ASAP because I do not work weekends. Good Luck

May 21, 2009 | 1995 Chevrolet Tahoe

1 Answer

Radio Code


I believe you have another problem, because the radio will keep the calibration of the radio as long as it stays in your van. it will only lock if radio is swaped with another pontiac radio. to unlock it you will need a GM tech II to recalibrate the unit.

Dec 14, 2008 | 2001 Pontiac Montana

3 Answers

Radio Unlock Code


if you bought the car new then there should be writen in the manual the code for the theft lock system on the radio. if pre-owned then it might ,might not be in there. or if you dont have one at all. go to your nearest GM dealer and have them fix it by finding the code. make sure to have them write it down for you incase this happens again.

Jun 24, 2008 | 1997 Oldsmobile Cutlass Supreme

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