Question about 1999 Chevrolet Venture

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How do I reset the radio? Had to disconnect the

How do I reset the radio? Had to disconnect the battery, now radio shows LOC..

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Use the code in the ownres manual to reset it

Posted on May 09, 2010

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I replaced my starter on my 2002 GMC Savannah and when I go to start the van the words LOC come up on the radio. What is wrong?


You obviously disconnected the battery, your radio has to be re-coded. Loc means the radio is locked and needs a code to re-instate, did you buy the vehicle new? If not, maybe a different radio was fitted by the previuos owner

Aug 17, 2015 | GMC Cars & Trucks

1 Answer

Radio display is showing Loc, had problems with battery cables arking causing anti theft loc to lock up radio causing radio not work.


Try following the directions posted at How To-

http://www.ehow.com/how_5960487_unlock-gm-radio.html

Be sure those cables are fixed. You can get new terminal ends at any parts storre if the originals are rotted away. They install without soldering.

Sep 07, 2010 | 1998 Buick LeSabre

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

3 Answers

I can't turn on my radio the dispaly says THEFT


I'm guessing that you disconnected the battery recently! but if you contact your dealer they can pull the code for you, you may have to take it to them so they can connect the scan tool and get the code that way!

Mar 30, 2010 | 2001 Chevrolet Blazer

2 Answers

Radio Wont Play after I replaced Battery!


thats because its a key code security device once you disconnect its power source the radio will automatically lock itself to prevent theft but you can take it to a shop that sells radios and they can reset it for you but its impossible to diy because you need a computer to programme the microchip so take it to a shop m8 otherwise it wont work mine did the same hope i helped :)

Oct 25, 2009 | 1994 Oldsmobile Cutlass Supreme

1 Answer

Changing battery 2001 Lumina and radio lock up.


someone (hopefully you) set the 3 or 4 digit security code on the radio. when power is disconnected, like if someone steals your radio, the radio locks and cannot be used. the code can be from 000 to 1999. the hour and minute buttons are used to enter the numbers. 2000 choices - good luck
to unlock the system:
1 turn on ignition - LOC will appear
2 press MN and '000' will appear
3 press MN again until you see the last 2 digits of the code you want to try
4 press HR until you see the first 1 or 2 digit of the code you want to try
5 press AM FM
6 SEC will appear if you got it right - LOC will show if you got it wrong
good luck

Sep 26, 2009 | 2000 Chevrolet Lumina

2 Answers

Radio


You can drive to the dealer and have them help you enter the code since they are alway's connecting and disconnecting battery's, The instructions are in the manual and the codes might be written in the front or back page. If no codes were programed try 0000 and see if that works. IF the dealer wants to charge you a crazy amount, you can get your codes here on www.radio-code.com Good luck and hope this helps.

Jun 03, 2009 | 1993 Chevrolet Astro

2 Answers

Radio locked after disconnecting battery


In your manuel there is instruction to unlocking the radio and you may have the code's written in the back. If it does ask for a code try 0000 and if that does not work try logging on to www.radio-code.com.
They can give you the instruction and codes you need to reset your radio. If you have a good relationship with the dealer they may be able to help you out too since they are always disconnecting and changing batteries.
Good luck and hope this helps.

May 28, 2009 | 2002 GMC Sierra 1500HD

1 Answer

2001 Buick radio Locked after battery change


Most likely there is an anti-theft code for the radio and you must enter that code to enable the radio. This will happen when the is battery is disconnected. If you do not know the code or the procedure for entering it consult your manual. If you do not have the manual or code you will need to have the dealer reset it for you.

Apr 10, 2009 | 2001 Buick LeSabre

1 Answer

1997 Z24 Cavaliar RADIO WONT UNLOCK!


you need to leave key on for 30 minutes and it will go back to loc and let you input code

Nov 20, 2008 | 1997 Chevrolet Cavalier

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