Question about 2005 Chevrolet Silverado

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Radios were swaped between 05 chevy trucks now radios are locked and will not release codes even following all the code release items i could find

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  • Master
  • 600 Answers

You probably need to swap ecu's as well as they are coded together.

Posted on Aug 31, 2010

Testimonial: "help was great now i need to know where the ecu's are to complete the problem"

  • shoerrich Aug 31, 2010

    sorry but what is the ecu and where is it?
    thanks

  • Chris Edwards
    Chris Edwards Sep 01, 2010

    ECU is short for electronic control unit, mines behind the battery with a large bunch of wires coming from it, you can only swap them if the 2 trucks have the same unit, maybe your dealer will answer that one. This might be a big pain but it is why they are no good to steal any more. I will try and research more.

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  • Chevrolet Master
  • 2,019 Answers

No, the radios are not at all related to the vehicle they are installed in. This would have happened if you disconnected the battery long enough in the same vehicle. The radio and ECU do not have any connections between them that would allow for any reading of each other's codes. They would have to share some sort of data buss. If you want to be sure, swap one of the radios back again and try the code again. If it works then, I am wrong. But if it does not work then, you simply do not have the right code and never did.

But all you have to do is to have the code reset, by anyone who installs that brand of radio. They can't tell you what the old code was, but can tell you what they reset it to. It is supposed to be free. CarToys will probably do it.

Posted on Sep 01, 2010

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1 Answer

How to how to unlock car radio 2008 Chevy Impala


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.


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 ignnition on before the radio returns to LOC mode.

Aug 14, 2015 | Cars & Trucks

1 Answer

How to unlock 2006 Chevy Impala radio


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.

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 ignnition on before the radio returns to LOC mode.

http://www.impalaforums.com/chevy-impala-8th-gen-discussion/270328-how-to-reset-gm-theft-lock-radios.html

Jun 05, 2015 | 2006 Chevrolet Impala

2 Answers

2005 chevy cobalt.radio don't work.change int.fuse.isthere another fuse


Check the cigarette fuse, Sometimes it's the memory of the clock on the radio and if you pop that from a cell phone your radio won't work..

Jun 04, 2015 | 2005 Chevrolet Chevrolet Cobalt Base

1 Answer

Cd Code need code for am fm / CD /cassett player purchased at junk yard out of a 2000 Suburban and putting it into my 2010 Chevy Colorado which has only basic am / fm radio? How do I get past "locked"...


That is a security "feature" on GM radios to deter theft. The following instructions has had sucess with other GM vehicles. If not, only a dealer has the equipment to get past lock screen.

This works on vettes with theftlock. Try it on the tahoe and let us know....




The following procedure will give you a new code that you can use instead of your personal code. Using this new code, you can "unlock" your radio and then "re-lock" it with a new code if you wish. Prerequisites: The radio must be in LOC mode NOT in INOP mode. Let me explain. If you have activated the Theft-Deterrent feature of your radio and loose power, the radio goes
into LOC (theftlock) mode. With the ignition on, you must use the MN and HR buttons to enter you personal code in order to unlock it (The instructions are on page 3-27 in your Y2K Owner's manual). If you fail to enter the correct code eight (8) times, the radio goes into INOP
mode. You have to wait an hour with the ignition on before the radio returns to LOC mode (go for a long drive somewhere).

Procedure: 01. Turn the ignition ON (The radio displays LOC)

02. Hold down the Radio Presets 2 and 3 buttons for six seconds

03. The radio display changes from LOC to a three-digit number. Write this number down. Don't take forever, fifteen seconds max before the next step.

04. Press the AM/FM button

05. The radio display changes to another three-digit number. Write this number to the right of the first one.

06. You now have a six-digit number, the first three digits are from STEP 03 and the last three digits are form STEP 05

07. Call 1 800 537 5140

08. Press 1 then # (pound). You'll hear "Invalid Code, try again"

09. Press 139010 then # (pound). You will be asked to enter your four or six digit code followed by * (start)

10. Enter the number from STEP 6 then * (star)

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. The Theft-Deterrent feature is STILL active! If you want to disable it, use the instruction on page 3-27 in your Y2K Owner's manual. Use the code from STEP 11 instead of your personal code. Note: This tip originated from LOTZAHP, Austin TX (credit must be given where credit is due). I verified it on an Y2K C5 with a locked radio - mine.
http://chevroletforum.com/forum/tahoe-suburban-25/help-radio-locked-8220/

Aug 19, 2013 | Chevrolet Cars & Trucks

1 Answer

I have an 05 chevy malibu ls and the radio is on lock mode . How do i unlock it?


In your manual there should be a unlock code. If you are unable to find it or dont have one you will have to contact your local chevy dealer

Aug 21, 2011 | 2005 Chevrolet Malibu

1 Answer

05 gmc dmax radio locked when installing superchip


Your local chevy dealer has the unlock code[s]. Your local mechanic can get the codes from his chevy dealer parts guy.

Apr 17, 2010 | GMC C2500 Cars & Trucks

3 Answers

2000 chevy s-10 4 digit code for the radio, its locked


this did not work it says code 139010 is invalid to I cant get past step 8 or 9 my number from step 3 is 702 and step 5 is 706 someone please help Im going crazy

Nov 05, 2009 | 1998 Chevrolet S-10 Pickup

1 Answer

HELP ME PLEASE


This may be worth a try... works on some of these... 01. Turn the ignition ON (The radio displays LOC) 02. Hold down the Radio Presets 2 and 3 buttons for six seconds 03. The radio display changes from LOC to a three-digit number. Write this number down. Don?t take forever, fifteen seconds max before the next step. 04. Press the AM/FM button 05. The radio display changes to another three-digit number. Write this number to the right of the first one. 06. You now have a six-digit number, the first three digits are from STEP 03 and the last three digits are form STEP 05 07. Call 1 800 537 5140 08. Press 1 then # (pound). You?ll hear ?Invalid Code, try again? 09. Press 139010 then # (pound). You will be asked to enter your four or six digit code followed by * (start) 10. Enter the number from STEP 6 then * (star) 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. The Theft-Deterrent feature is STILL active! If you want to disable it, use the instruction on page 3-27 in your Y2K Owner?s manual. Use the code from STEP 11 instead of your personal code.

Jun 08, 2009 | 1998 Chevrolet Venture Cargo

1 Answer

Radio locked


I had the same problem with my 1999 Sonoma. try this:
(You must be in your truck with a cell phone handy)

01. Turn the ignition ON (The radio displays LOC)

02. Hold down the Radio Presets 2 and 3 buttons for six seconds

03. The radio display changes from LOC to a three-digit number. Write this number down. Don’t take forever, fifteen seconds max before the next step.

04. Press the AM/FM button

05. The radio display changes to another three-digit number. Write this number to the right of the first one.

06. You now have a six-digit number, the first three digits are from STEP 03 and the last three digits are form STEP 05

07. Call 1 800 537 5140

08. Press 1 then # (pound). You’ll hear “Invalid Code, try again”

09. Press 139010 then # (pound). You will be asked to enter your four or six digit code followed by * (start)

10. Enter the number from STEP 6 then * (star)

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. The Theft-Deterrent feature is STILL active! If you want to disable it, use the instruction in your Owner’s manual. Use the code from STEP 11 instead of your personal code.

Hope it helps.

Sep 10, 2008 | 2000 Chevrolet S-10

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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