How do i unlock my 01 gmc factory radio ???? - 2004 GMC Sierra 2500

GM DELCO THEFTLOCK RADIO UNLOCK info:

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: 1-800-537-5140. It's a prerecorded message.
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 jamb 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.

Note this only applies if the radio displays the "LOC" message. If it's
blank then there's either no power to it or the head unit is defective.

* The radio must be in LOC mode NOT in INOP mode.
* Turn the ignition ON (The radio displays LOC).
* Press and hold presets buttons 2 & 3 or 1 & 4 for approximately 10 seconds.
* The radio display changes from LOC to a three-digit number.
* Write this number down.
* You will then have fifteen seconds max before the next step must be performed.
* Press the AM/FM button.
* The radio display changes to another three-digit number.
* Write this number to the right of the first one.
* You now have a six or four-digit number, the first three digits are from STEP 3 and the last three digits are from STEP 5.
* If you have a four digit number, it will show all four digits at the same time.
* Example 4523.

If you have a rds radio the 1&2 of 3&4 presets wont work it has
to be hooked up to a hand held computer (tech2) at the dealer. It should say
rds on the face of the radio near the display .

If not you have to hold the pre-set buttons for a few seconds it had a
situation that it wouldn't work unless the vehicle was running. If you can get the code write it down

call 1800-537-5140 when the recording begins
press 106010 then * it will ask for your code
enter your code followed by *

It will give you your unlock code.

Should be able to access by pressing the minute button then 000 should appear.
Press the minute again to make the last two digits to your code # then
press the Hour button to make the first digits match your code.
After you entered you code press AM-FM and if done right SEC or something should be displayed.

This all has to be done with out more then 15 sec between steps. Also if you fail 8x entering the code, INOP will appear and you'll need to leave the key on for a hour to reset and try 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). "it's really *lol"
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.

Dealership Codes

* 139010
* 106010
* 206010
* 202107

Troubleshooting

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. GM DELCO THEFTLOCK RADIO UNLOCK info: 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: 1-800-537-5140. It's a prerecorded message. 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 jamb 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. Note this only applies if the radio displays the "LOC" message. If it's blank then there's either no power to it or the head unit is defective. * The radio must be in LOC mode NOT in INOP mode. * Turn the ignition ON (The radio displays LOC). * Press and hold presets buttons 2 & 3 or 1 & 4 for approximately 10 seconds. * The radio display changes from LOC to a three-digit number. * Write this number down. * You will then have fifteen seconds max before the next step must be performed. * Press the AM/FM button. * The radio display changes to another three-digit number. * Write this number to the right of the first one. * You now have a six or four-digit number, the first three digits are from STEP 3 and the last three digits are from STEP 5. * If you have a four digit number, it will show all four digits at the same time. * Example 4523. If you have a rds radio the 1&2 of 3&4 presets wont work it has to be hooked up to a hand held computer (tech2) at the dealer. It should say rds on the face of the radio near the display . If not you have to hold the pre-set buttons for a few seconds it had a situation that it wouldn't work unless the vehicle was running. If you can get the code write it down call 1800-537-5140 when the recording begins press 106010 then * it will ask for your code enter your code followed by * It will give you your unlock code. Should be able to access by pressing the minute button then 000 should appear. Press the minute again to make the last two digits to your code # then press the Hour button to make the first digits match your code. After you entered you code press AM-FM and if done right SEC or something should be displayed. This all has to be done with out more then 15 sec between steps. Also if you fail 8x entering the code, INOP will appear and you'll need to leave the key on for a hour to reset and try 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). "it's really *lol" 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. Dealership Codes * 139010 * 106010 * 206010 * 202107 Troubleshooting 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.