Question about 2004 GMC Envoy

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Radio locked I got a factory radio from the junk yard to replace my broken one got it in and it played for about 10 sec. then went to lock mode. Can I unlock it or do I have to take it to the dealer.

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Take it to the dealer and he'll have it unlocked in no time. I have done it in the past and it was quick enough that they didn't even charge me for it.

Posted on Feb 02, 2009

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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

2002 pontiac grand was purchased with no radio inside brought a factory radio from a junk yard put it in and it says locked do anyone have the unlock code


The dealer does. They have to call to get the code and disarm it before they can get in. Junk yard should have told you this. Costs about $50.00

Jun 28, 2011 | 2002 Pontiac Grand Am

1 Answer

Thebestplayert@269My Factory Radio display has stop working.But it still plays sound.Can i replace this with an aftermarket stereo or do i need to buy the same stereo that is in it now?


First make sure the key is pushed all the way in the ignition, I have had other cars that if the key was not pushed in all the way the radio display would not work. If this is not the problem, I would replace the radio with an updated aftermarket radio/cd/mp3 player. I have a newer Grand Marquis and the radio went out so I priced used replacement radios and they cost as much as an aftermarket radio. You can find these at any car salvage yard (junk yard). A used radio would be easier to install as you would just have to plug it in using the same cables in the back. To install an aftermarket radio you will need one or two adapter cables and will require splicing wires. I have installed quite a few radios and I opted to do it myself. You can have the radio installed by a dealer but installation cost run from $75.00 to $125.00 depending on type of car and radio. If choosing an aftermarket radio make sure the look will fit the car. You may not like the look of something with widly glowing LED lights a few month down the road. I am very pleased with the unit I purchased as it looks more like an OEM radio and doesn't shout steal me at car thieves. I can play mp3's and plug in both ipods and other compatible electronics.

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Mar 04, 2011 | 1999 Lincoln Town Car

2 Answers

Default code to unlock factory radio in a 2000


How to Reset GM Theft lock Radio's
Article Disclaimer: This article is meant to be used by Delco Radio owners to reset there radios. In no way is it meant to be used for any unethical or unlawful ways.

Purpose
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.

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.

To Read the original article or read similar articles please visit kingbain.com/how-to/unlock-gm-theftlock-radio-s

Good luck (remmeber comment and rated this).

May 05, 2010 | 2000 Chevrolet Silverado

1 Answer

Radio stopped working today in my 2002 Impala. The radio says SCAN and will not play any music. The radio also stays on after the car is turned off. The car has been sitting for 7 hours and the radio is...


Replace the radio. The head unit is probably bad if this is the factory radio. Get one from a junk yard or ebay. This is not very common but also not unheard of with Delco radios. Another head unit should cure the problem.

Apr 27, 2010 | 2002 Chevrolet Impala

1 Answer

How do i unlock my 01 gmc factory radio ????


How to Reset GM Theft lock Radio's

Article Disclaimer: This article is meant to be used by Delco Radio owners to reset there radios. In no way is it meant to be used for any unethical or unlawful ways.

Purpose

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 *<star>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.

Mar 07, 2010 | 2004 GMC Sierra 2500

1 Answer

I have a radio, factory, AM / FM / Cassette. The


I would think it's a fluke thing,radios just quit,it's their thing.A new radio shoud fix your problem.

Jan 12, 2010 | 1998 Dodge Ram 1500 4WD

1 Answer

Radio is locked on chevy cavalier


I replaced the radio on a similar car with an identical junk-yard radio/cd player. of course it was locked. I went to the dealership and they were nice enough to plug a hand-held computer under the dash and unlocked it for free. Took about 5 min. Hope this helps.

Jan 26, 2009 | 2005 Chevrolet Cavalier

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