I've a 1997 pontiac grand prix and the radio is in the theft loc due to a caR BATTERY REMOVAL.Is there an override code to make the radio operational again?

The following instructions will allow you to reset any GM (General Motors), Cadillac, Oldsmobile, Buick, Pontiac theft lock radio.

Requirements: the theft lock radio must be in "LOC" mode.

Procedure:
1. Turn the ignition ON (The radio should display "LOC")
2. Hold down the Radio Presets 2 and 3 buttons for six seconds
3. The radio display changes from LOC to a three-digit number. Write this number down. You now have fifteen seconds to complete the next step.
4. Press the AM/FM button
5. The radio display changes to another three-digit number. Write this number to the right of the first one.
6. You now have a six-digit number, the first three digits are from STEP 03 and the last three digits are form STEP 05
7. Call 1-800-537-5140
8. Press 1 then # (pound). You'll hear "Invalid Code, try again"
9. Press 139010 or 106010 or 206010 or 202107 then # (pound). You will be asked to enter your four or six digit code followed by *
10. Enter the number from STEP 6 then *
11. Listen to the four-digit number and write it down. It will be repeated twice
12. Turn the ignition ON (The radio displays LOC)
13. Use the MN and HR buttons to enter the code from STEP 11
14. Press the AM/FM button. The radio display changes to "SEC". Your radio is now "un-locked" and usable.

If you fail to enter the correct code eight times, the radio goes into INOP mode. You have to wait an hour with the ignition on before the radio returns to LOC mode.

Hope this helps; keep in touch.

The LOC stands for locked
You will need a code to get this radio to operate.
You will need to have the code entered at any GM dealership & have proof of ownership with your ID
It is a theft deterrent system installed on all radios these days since the 90's

GM radio unlock procedures If you've ever had to disconnect the battery, or locked your stock GM radio by some other means and don't have the unlock code - here's what you need to do to get it unlocked. Sorry I don't have any photos, but if you can't find the radio - or any of the buttons...I'm not sure any amount of pictures would help you.

Press & hold the 2 & 3 buttons at the same time for about 10 seconds; a 2 or 3 digit code will appear, write this # down, press & hold the am/fm button for about 10 seconds: another code will appear, write this # down, then call 1-800-537-5140 and enter 202108 (this is a dealer code - you can use one of the others below, too) followed by the # key, then enter the numbers that you wrote down, followed by the * key.
The call will give you a 3 or 4 digit override code. Write this code down so you have it if you ever need it again. Enter this number into your radio following the instructions in your owners manual.

Note: If you get an override code that starts with 0, you drop the 0 when entering the code into your radio.

If you don't have an owners manual, then press & hold the hour button until the first 2 digits of your code come up, then press & hold the minute button until the last 2 digits show. Then press the am/fm button.
Repeat step #5 twice in a row it will disable the Theftlock and you will see "---". You will then be able to change to a new lock code.

IMPORTANT - Other dealer codes: 139010, 206053 and 620529 - these may be inactive by now; GM will remove them from time to time if they feel that they are "compromised".

Also - there are 2 modes to the TheftLock - "LOC" or "SEC" and "INOP". Once the anti-theft is activated, the radio display will show "LOC" or "SEC" - you then have 8 attempts to enter your code. If after 8 attempts you don't enter the correct code, the display will change to "INOP". It is only at this time that you will need to wait one hour, with the ignition ON; before you can retry. After that - you will have only 3 attempts before the radio enters "INOP" mode again.

the only way to get loc code is to get s/n off radio and call dealer because every code is good only to that car sorry for the bad news but thats it

Hello! You have done half of the work already! You can take the code, and the VIN to your vehicle; and call your local GM dealership. Tell them that you need the unlock code for the radio, and they will ask you for that information.

Also - there are 2 modes to the TheftLock - "LOC" or "SEC" and "INOP". Once the anti-theft is activated, the radio display will show "LOC" or "SEC" - you then have 8 attempts to enter your code. If after 8 attempts you don't enter the correct code, the display will change to "INOP". It is only at this time that you will need to wait one hour, with the ignition ON; before you can retry. After that - you will have only 3 attempts before the radio enters "INOP" mode again.

Hope this helps and good luck!

Dealer has codes...bring car and proof of ownership and they will help you.

If you bought the car used, you will have to contact the dealer or person that sold it to you. They have set a 4 digit code that must be used to clear the radio.
Good luck, let me know.
Regards,

I suffered the same problem. Turn your ignition key to the ON position for 1 hour. This will reset the double lock feature on the radio to prevent theft. Once you leave your ignition key on for 1 hour, turn the key to the off position. Remove the key. Then turn the ignition key back to the ON position. You should then see "LOC" instead of "InOp". Then try the steps to enter your code again. Three incorrect tries will enable the double lock feature again, and you will have to repeat these steps to reset it.

TRY CHANGEING THE BATTERY OR CHEK THE CILLONOID

go to GM Dealer: give them vin number,make of car and year.
That should solve your problem