2007 - 2010 How to VIN Unlock Salvage Yard GM Radio w/ Tech2 OR Manually Programming its EEPROM
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- เผยแพร่เมื่อ 12 มิ.ย. 2024
- In this video I show you TWO ways to UNLOCK an used salvage yard Delphi / Delco Electronics showing LOCKED on the display for 2007 up thru 2010 designs. Shown by using the GM Tech2 scan tool OR instead by using an inexpensive CH341a EEPROM programmer to manually update the VIN stored inside the radio. Both methods do NOT involve any soldering (for this part number), hacking, destruction, or damaging of the radio circuit board or its chip(s) and thus preserve 100% of the functionality as originally designed by GM - while still clearing the VIN Theftlock correctly. However, to perform the remedies in this video you need to either have access to a GM Tech2 scan tool and CANDi module, or alternatively a GM MDI scan tool with a paid Tech2Win subscription at www.acdelcotds.com, or an EEPROM programmer capable of programming for a SOIC8 24C08 EEPROM (marked 09400464 by Delphi).
NOTE: Some radio models have a circuit board design that is incompatible with in-circuit programming, and for these a test clip WILL NOT work. You will have to instead desolder and remove the EEPROM chip if you are having problems reading it in circuit (e.g., getting all 00s). I can only confirm this particular salvage Delphi radio with GM part 25834576 will work in-circuit.
I illustrate both procedures using a benchtop test harness constructed out of a salvage 2009 Chevrolet Cobalt Body Control Module (BCM). The video is an exact match for unlocking the radio on a 2007, 2008, 2009, or 2010 Chevrolet Cobalt or Pontiac G5 with the US8 radio head unit GM part 25834576 and BCM 25928052. This video is NOT going to apply to older vehicle Theftlock style radios, and is somewhat different than the previous generation RDS radios too - I have other videos for both of those - check my playlist. I make no claims this videos approaches are applicable at all if you're outside these particular GM model years.
The eBay and Amazon search links below are paid links, for which I may be compensated and earn a commission, if you choose to buy the parts and tools shown in this video thru them:
If you're looking to buy your own GM Tech2 scan tool and CANDi module: ebay.us/B4HXc8
Chipquik SMD1 desoldering product if you find you have to remove the EEPROM chip to program it: ebay.us/Gg3Eyp or amzn.to/2L9C92c
You may find the type of official GM service manual I showed for the Chevrolet Cobalt and Pontiac G5: ebay.us/3PiBB2
And finally if you are looking to purchase one of these CH341A USB EEPROM programmers (be sure to pick a Black Edition by photo): ebay.us/m7WlFS and amzn.to/3eizca2
If I've saved you some $$ here, consider some coins for the coffee tip-jar! ko-fi.com/drshock
2007 2008 2009 2010
Chapters:
0:00 - Problem Overview
0:23 - Radio Identification
0:57 - Radio Removal from Vehicle
4:18 - Building a Bench-top BCM Radio Harness
11:15 - Demonstrating the Bench-top Harness Operation
13:37 - Unlocking the Radio using a Tech2
16:40 - Radio Disassembly
23:21 - Circuit Board EEPROM Location
25:08 - Microscope Inspection
26:40 - Unlocking the Radio using an EEPROM Programmer
#drshock #cobalt #pontiacg5
Disclaimer: DrShock, the alias for the human content creator for this TH-cam channel, is not responsible for any damages, injuries, losses, or liabilities associated with any repairs, upgrades, or maintenance performed on yours, or any other, vehicle whatsoever. No warranty, express or implied, is made as to the accuracy or completeness of any information provided within this channel. Viewing and using the “as-is" information of this channel is totally at your own risk. Always wear personal protection equipment and follow appropriate vehicle manufacturer service manual guidelines with original manufacturer parts only when performing any repairs, upgrades, or maintenance upon any vehicle. - ยานยนต์และพาหนะ
I don’t know if you have time to do an experiment while it’s on the bench, could you try to leave the vin field blank F and see if the bcm writes the correct numbers in.
Thank you for asking this. I had meant to show that in this video, it's a very common question. Writing 0xFF to the six VIN plus the seventh checksum memory positions, will both result in an unlock and the BCM automatically updating the VIN and checksum values in the EEPROM. I believe this is close to the state a brand new radio from GM would be in, but haven't looked at a new ones virgin EEPROM image to confirm. In fact, once the BCM has _seen_ the radio, you can write pretty much any string of 6 digits and it will auto correct it for you. I don't know if this is limited to the bench setup, where the BCM perhaps is aware of the radio serial number like it is with a TPMS module, or if it would work in the wild the same way.
Thanks
I wonder if the same way for w body bcm?
Very much appreciated DrShock. My original deck had an intermittent display. The replacement deck was of course locked when received. I assumed the EEPROM would be located on the display face circuit board, but your video helped correct my assumption. You saved me $150 from the dealer because my fix was to swap display faces between original and replacement decks ... no programming necessary. Thank You.
You are the man... One of my family members had the radio stolen from their 09 Pontiac G6. The only salvage radio we could get a hold of was a similar Delphi unit from a 2010 G6. The connectors were different, but using some good wiring schematics it was easy enough to solder in the new ones. The dealership charges $150 to reflash the radio, so I ordered one of these chip programmers for $10. It worked like a charm and the radio is working great. Thanks for the video.
You can find units on ebay between $25-$60 depending on condition. There are some that are 150+ but there is no difference. So saying the ONLY salvage radio you could find seems a little ridiculous..
This is the best video I’ve seen for this issue all the others have somebody taking a needle nose pliers to the eprom and tearing it out.
Just used this to unlock a 2011 Delphi /GM radio I got from the salvage yard! Very excited. I am a complete novice in this area. Didn't know what an EEPROM was before researching.
Donor car was a 2011 Chevy HHR and receiving car is a 2008 Chevy HHR. 😁Thank you @drshock
This was the most helpful video of all the others on TH-cam. Thank you!!!!!
Thanks for this!! I had a blast doing this to my Sierra's replacement radio.
Thank you for doing. This stuff it helped me from not having to putting after market. in been down that rode be for whey to much money you are the bomb much respect
Thank you so much, I was wanting to put one if those radios into my 2005 chevy blazer and now I can thanks
Hey thank you for taking a picture of the fuse itself . Only reason I found it !
watching it for a 2nd time this is a good one
Well, I would like to thank you DrShock because upon watching the video I decided to follow your advice with the EEPROM and even tho it took me a while to find the latest version of the asProgrammer, I was finally able to download the 2.2 version from a simple google search. For that, I downloaded WinRAR (free version) and after finding the downloadable file, I extracted the files in the desktop, and I was able to execute the program with no issues. The radio I got had a different motherboard, but I found the chip (almost had the same numbers as the one you showed in the video). The problem I had was that the EEPROM was not reading it and I was getting all 00 and FF values. After reading all the comments, I decided to go ahead and desolder the chip and this time I was able to edit the information. Now, I am waiting for my soldering kit to arrive so I can solder it back in place. I hope that I don't mess it up 🤣. If you don't have the program, download it and also download the 2 drivers needed so the computer can recognize the device. Once you open the asProgrammer, make sure that you are using the correct hardware description (under Hardware select CH341a and not UsbAsp) because this will give you a connection error like I was getting. I will keep you guys posted about how things went when I put the whole thing back together.
Glad I could help.
Your video was very well presented even thou I understood it only in theory and am not able to do what you have done. My expertise in radio repair allowed me to take the vibrator out of the radio in Dad's 41 Buick, remove the cylindrical metal cover, file the points using Mom's fingernail file and being proud of myself when it started to play. The problem I am having with the unit in my 09 Silverado is a beligerant CD player. It works when it feels like it and that is generaly not when I want it to. It will play some CDs very well and others with backrground noise or won't load them at all. Most of what I keep in my truck are CDs I burnt from my collection. Have a good one. OH and by the way I like your work shirt. I have several like it.
That's a great LAN11 setup you did, could you master up one for the LAN29 radios as well?
So I pulled apart 6 different GM Delco radios made from 07-10 with varying corresponding part numbers and NONE of them had EEPROMS. Some with and without CD players and aux. All that was visible onboard was various microcontrollers, FETs and a couple other IC packages. A couple of them had rectangular metal shielding boxes soldered to the board and without looking at each specific diagram not sure what specifically was underneath but certainly not an EEPROM.
Every Delphi sourced radio from that period has an EEPROM, hands down that's how they store the VIN, calibration, and user settings. But, I have come across a couple of designs that do not use SOIC8/SOP8 packaged EEPROMs but rather a serial EEPROM in the tiny 3 pin SOT23-3 packaging. If the radio was made by Delphi, or Delco Electronics, the EEPROM is there, but likely a tiny 3 pin device instead of an 8 pin if the latter isn't on the board design.
I have a panasonic radio. Do I need to remove the eeprom and program it that way? The best I can tell is the pinout of the eeprom is a little different than the clip so I would have to use jumper wires between the programmer and the board to get the right pinout. I have another aftermarket radio But I would need the mounting hardware and harness adapter.
I have a few of these videos covering different years and radios. Not all, but enough of a mix to cover most Chevrolet models. The one I did for the Cruze is of a Panasonic sourced radio, for example. Yes the Delphi and Panasonic models may use different circuit board designs and different EEPROM types. Whether you needed to make a jumper adapter for the pinout would depend on your EEPROM programmer, some come with support for setting up their pins in their software, others need adapter. It's typically the less expensive ones, which may only support 24XXX type chips by default.
Can you show how to rewrite a 2012 danali style radio with a full infotainment system including the rear video screens
Hello DrShock what a great video! Congrats!!!
Please just help to understand if i could unlock my 2011 Chev Captiva Sport V6 3.0 MyLink doing the same as you did? I saw some people doing the same for some MyLink versions, so i did the same with mine.
The problem is, I put the clip in the EEPROM, and tried ALL possibilities but the software sais it´s blank!
How can i correctly identify the EEPROM number? The Board needs to be with powered with 12v?
Thanks a lot!
You definitely do not power up the board. The power is to the specific EEPROM chip only, and supplied by the EEPROM programmer thru the attachment between it and the chip.
However, only a few circuit designs can have the chip read without desoldering and removing it from the board. It's far more common that this isn't possible, and this can vary even with the same radio across different years and models. Before having to remove the chip, be sure that your testclip is correctly attaching. The cheaper Chinese made clips give out their spring tension very fast. Also check that you have the orientation of the clip correct for pin 1 of the chip as indicated by its datasheet (each eeprom type has a different pin out).
Have you ever used the EEPROM programmer on a 13-17 Traverse/Acadia/Enclave MyLink radio? Just curious, as there aren't any videos out there for that particular radio. I purchased a Traverse MyLink radio from a boneyard ~3 years ago and tried using the CH341a to erase the VIN from it. There was only one chip on the entire board that resembled an EEPROM (no markings on it, however) and all I was able to glean from it was gibberish. Ended up taking it to a stereo shop to have the VIN cleared when I failed with the programmer. Wish I had the foresight to look up the mobo schematics using the serial number!!
No, haven't had a need to look into the MyLink radios. But I will be posting a 2011-2015 Cruze series radio unlock vid in a few weeks.
@@DrShock The cool thing about the Traverse MyLink is it's a LAN29 radio. I installed one in my '12 Impala, connected a backup camera, and wired into the VCIM to enable bluetooth calling and voice commands (you can stream music just by plugging it in without wiring into the VCIM.) It's all plug and play with any LAN29 vehicle.
Looking forward to the Cruze radio unlock. I have a 2016 2nd Gen Cruze with the 7" base MyLink, but it doesn't have XM. Have been tossing around the idea of swapping in a stock 7" radio that has XM, but I'm not 100% sure it'll be a plug and play operation. I believe the 8" radios have an HMI module to contend with, but from what I've seen the 7" radios do not. I should just bite the bullet and buy a knock-off MDI and get an Alldata subscription!!
Unlocked 20935459 but found out there's a difference between UQ3 vs UQA and wondering is it possible to program UQ3 to UQA?
I bought one of these radios a while back. My plan is to put it in my 97 GMC suburban. I do not need to worry about it being locked right? Thanks for sharing.
These radios won't work in a pre-2003 vehicle as-is. They all require a handshake with the BCM just to power on. That's why I have a BCM in the bench setup. There are aftermarket boxes you can get that supply the power on signal though.
Depending on what vehicle you get the radio out of, you can get it to function with a PAC "LAN11ON" module or a "LAN29ON" module to mimic the proper BCM signal. LAN11 would be for a radio from lower level models like the Cobalt, Malibu, etc. LAN29 would be upper level models like Tahoe, Impala, etc...
Boa noite !
O meu malibu queimou a saída de áudio traseira esquerda e o meu rádio é igual a esse. Você saberia dizer qual CI é responsável pelo defeito?
With the reman cardone. How will it. Know my mileage? Will I have to go to a dealer anyway for them to program it? I guess just confused a bit about plug and play. Cardone said no programming required but needs to configure rpo thanks
I haven't used Cardone before. But they advertise their remanufactured BCM as _plug and play_ - no programming required. So they should be asking for your VIN to setup your regular production options (RPOs) before sending it out to you I would think. You probably want to call back and confirm if the mileage is stored in the instrument cluster or the BCM for your 2001 Impala. I don't have any technical info on 2001, but 2003 and up thru 2009 the mileage for an Impala is stored in the instrument cluster module not the body control module. So not asking for mileage on those years for a BCM replacement would make sense. Perhaps 2001 was the same, you would have to call them to confirm. Unfortunately GM adopted different methods of storing mileage across models and years so every car is a technical data investigation on this topic of BCM replacement.
great video. I bought a silverado with the stereo locked... when I opened the stereo found out that somebody had removed the EEPROM. now I'm stuck. could I buy a blank chip and write the data from other image file?
Yes, you could do that. It was unfortunately a common _hack_ to physically rip the chip off the board to unlock the radio, which is what prompted me to create the series of videos on doing the unlock non-destructively. Sometimes folks just cut the power pin to the device which is easier to repair too. Hopefully the solder pads are still intact on your circuit board so you can repair the damage done.
@@DrShock thankfully the pads are intact. it should be a 24c08, shouldn't it? is there any possibility for you to upload a copy of that hex file? if it's not much trouble. it would be very much appreciated.
Yes, for the model in this video it's a 24C08 family. It is not always though, later radios have a different device e.g. First choice I would look for a busted radio at your local LKQ or other pull-a-part type salvage yard. You can often walk out with just the circuit board for $5 from an otherwise collision damaged radio unit and just move the chip on that damaged board to yours. Since the chip contents are copyright General Motors, a source for the bin image by itself would be checking on www.mhhauto.com or www.digital-kaos.co.uk which are both sites outside the USA.
@@DrShock Do you have a tutorial on the destructive method?
DrShock, thank you for this video. I'm appalled at the audacity of GM for making this process, for seemingly an extra revenue stream. I just purchased the same programmer as you have, in order to unlock a friend's radio - I can't remember the model, but it is a Delphi radio like the one you show, just with a USB port.
I have an odd question for you about the state of these locked radios. When I installed the salvaged radio for my friends 07 Cobalt, it showed locked, and the signal chimes/door chimes did not work. Does this sound right? When the radio is locked, it does not even allow chimes to pass through the speakers? I want to make sure there isn't something further wrong with their vehicle.
Again, thank you.
A 2007 Cobalt would *not* have had the USB radio type from the factory. The USB style came out much later, 2008/2009, and is not compatible to back service with the AUX style. Speakers are different, usually a separate amplifier unit was involved/required to hear anything, and all controlled by calibration programming not available in prior model years. BCM communications _may_ differ as well (which may be why it still is locked if the 2007 BCM isn't finding the data it expects from the radio).
The USB type radio is calibrated to work *only* in the vehicle year and model it was originally installed in. In years past a GM Tech2 tool could redo this radio speaker/chime calibration if the right speakers/amp were also installed, but GM started blocking any kind of used module reuse in their tooling software around 2009 (which is why I did this EEPROM level video in the first place).
You should be able to unlock and install the AUX type radio the Cobalt originally had no problemo, but you cannot upgrade it to the USB type from a later model year without alot of hassle and drama. Sometimes you can get lucky with a Panasonic built version (as opposed to the Delphi) which has a radio keypad sequence to reset the chime volume. You can replace the speakers with the ones that came from the salvage yard USB model car as well as the amplifier (tho not all would use an amp). But the unlocking part with the dissimilar BCMs you'll have to play around with alot more to get past the drama (make sure the VIN is in the 2007 BCM format not the later year format, if applicable).
Dr. This is all new to me- so the quickest idea ur video gave me / is to un-solder the Original EEprom & solder it correctly on to the matching donor radio...
I was able to use a Tech 2 to reset the VIN on a salvage radio for my '09 Traverse. There is no relearn menu for that platform, but there's enough similarity between vehicles, that I was able to select a different one and use it. Here's what I selected (may not be the right menu set or even work at all for your vehicle):
2009 (model year)
Passenger Car (Traverse is actually a light truck, but we're picking a different vehicle)
Chevrolet
W (this is the Impala)
Body (vehicle system area we're interested in)
CJ3 .... (this is one of two options available at this menu, and I just picked the first)
Radio
Module Setup
VIN Relearn
After the Tech 2 process, I had to go through several cycles (four, I think) of turning the key on, shutting it off, opening the door, then close it again. After that, the radio was unlocked and works fine.
So I have a 2010 HHR same radio and purchased a pristine used one same look from a guy's pull.
Am I correct in that I can either plug the tech2 into my car's OBD port and pair the used radio to the car. Or cheaper than buying a tech2 use the eprom programmer with the vin number of my car?
Thanks,
John K
Right, that's the jist of this video. Two methods. Though you have to be careful with the Tech2 route as after 2009 GM started to block the ability to do the VIN relearn (i.e., block letting dealers unlock used radios). GM wants you to purchase a new radio from their parts department, not pull one from salvage unfortunately.
So I would definitely poke around forums and such to be sure the HHR is like the Cobalt shown here, otherwise the EEPROM route would be the only option.
Hey I want to know how did you identify the op amps in the radio? I want to know so I can find the op amps in mine to swap them for superior ones.
The numbers silkscreened onto the top of the chips are _sometimes_ left the same from the manufacturer. That was the case with this particular radio. When that's the case you can match them over google with their use in other products using google. If Delphi or Panasonic paid to have them stamped with their own in-house number though, then you're out of luck unless you find a forum post where someone who worked there might have shared some details.
Ok so I have a 2011 Chevy Silverado radio that came out of my old truck and I’m trying to put it in a 2007 Chevy impala and I pulled that chip and when you plug it in it will work for a few seconds then say no vin the go to locked any ideas as to why?
A "NO VIN" error is different than "LOCKED". In this case the radio is saying it has no VIN at all, so it will go into a non-functional mode on these Delphi type radios until the VIN is programmed/found. The radio can get into this state when the chip's VIN contents are lost for whatever reason. Normally a few power cycles and the BCM will reprogram it - like a brand new radio.
But when you say you "pulled" the chip, I hope you didn't mean you completely removed it from the circuit board. That could explain the error, as the chip is a necessary component in 2011+ designs.
If I want to unlock a couple to leave on the shelf for when needed I can just plug them in and the vehicle will populate it. Do I use 00 or FF in the place of vin. The dot or V after vin do I need to do something there too? Thanks
You can do that, it varies by radio model what is considered _virgin_ for the memory area. You can do some trial and error to see which it likes, either 0x00 or 0xff. Leave any other characters alone. Many of these radios do _not_ use the complete VIN but rather a partial.
How were you able to reference or determine the Delphi internal part number was a microchip 24xxxx? I am interested in reading and modifying other devices in my gm cars. been googleing for hours 😅
So this is a combination of trial and error, and just having multiple examples to review. Later years Delphi stopped using house numbers so you begin to connect the dots on their house numbers and normal stock numbers. And once you can read the device, you can figure out the size which is all that drives the XXX part of a 24XXX part number.
So I got a CH341A EPROM programmer from amazon and it came with a lot of parts and pieces.
For us dummies who don't ever do this stuff I wonder if you could explain how to hook up the parts onto the programmer to make it work right? I have configured the one I bought to the way you have it in the video - visually that is. And I hope it's correct and I don'ts blow something up when I connect the clip.
Also the programmer instruction that came with it have instructions for a 24 series chip amd a series 25 chip. Any difference as far as this procedure is concerned?
Thanks much and I'll try to do this in the next few days.
There's another video linked in the upper right of this one that may help. Also linking it here th-cam.com/video/hPKckby54uA/w-d-xo.html
In your answer to one of these questions, you reference writing 0xFF to the six VIN positions and the check-sum position after it, in order to clear the VIN so the BCM will re-write it. That seems like a better way to go. You don't need to bother with getting the VIN each time. However.... could you figure out a way to do that through the plug on the back of the radio so the radio does not need dis-assembled? There is a data wire in the plug that can be used. I have seen companies using/selling devices that do this. (They are not using a Tech2 or MDI. It's something custom-built. And there was no BCM in the set-up. Just a little programmer about the size of your CH341, powered with 12v, a ground wire, and a wire going to the data pin on the radio plug.) I am just wondering how hard it would be to build something like that? It would be a lot easier to do the clearing if you did not have to open the radio up. As for the hardware, pinned radio plugs are easy to get and the little device itself was merely powered from a 12v bench converter. Thanks in advance.
These videos are meant for a DIY situation, where one always has the VIN of their vehicle and so it's no big deal if I share with you what chip to edit and where in its memory the VIN format lives. What you're looking for is a more commercial solution, and they are not trivial to develop and I'll explain why. You have to duplicate the messaging protocol used by the Tech2 scan tool during the VIN relearn, which is also the protocol used by Delphi on the manufacturing line to write the serial number of the radio. There are groups of vehicle models, and groups of radio models, which are all slightly different (that's why I have several of these videos showing the Tech2 and each is a different menu path for a VIN relearn). So there's no one tool solution to fit them all, which makes it commercially unviable to produce such a product unless its for your own radio unlock business to recoup the investment. I did get into how this would be done via the radio bus with an Arduino here though - th-cam.com/video/OJg6czxvJ2I/w-d-xo.html
@@DrShock By chance do you know if the VIN number is at the same address on a touchscreen?
No, each of the radio generations is going to have a different memory layout inside the chip. There may also be differences in how the VIN is recorded (some are full VIN, some are partial VIN, etc).
I’m looking to replace my father’s 2012 traverse radio/cd player(almost identical to this model). I found a seller on eBay that wants my v.i.n number in advance to “unlock” the radio so I can just p,up and play. Does all that sound correct or is there more I will have to do?
That's typical, asking for your VIN, so that they can perform one of the procedures I outline in this video on your behalf. If you're looking for a plug and play OEM radio replacement outcome, that's the way to go.
@@DrShock thanks
Hi I have a 2007 cadillac srx that needs a replacement radio (blew during a car battery change). I have a radio and am trying to read a 24c256n ATMEL eeprom in board and gettiing a read error. Do I need to remove the chip to reprogram the new VIN or is it even possible on the cadillac?
You could use the Tech2 or MDI scan tool for a 2007. If not, you can go the EEPROM route but I'm not familiar with the Cadillac radio boards to know the EEPROM chip type or its location on their board. If you are sure you have the right chip, you can try to read in circuit first but most likely you'll have to desolder it and program it off board then resolder it back on. Take care to note pin 1 of the chip for both steps.
Would you have any idea if this would work on my saab 2009 9-3 radio? They were owned by gm at the time. The radio itself looks pretty similar, at least faceplate wise. I was able to disassemble it and locate the eeprom but it looks totally different than the eeprom in the video.
It's likely possible to take the same EEPROM level approach, but I do not have any board experience working with Saab radios. You could verify the EEPROM contents by desoldering the chip from the board and then searching for the VIN in its memory, and if found just swap the chip between radios. As long as the Delphi/GM part number on the white label matches exactly, they _should_ have the same circuit board design to facilitate the approach.
Can the factory programmed bcm and factory upgrade modules (fog lights , heated seats, maybe even (remote start, power locks) from the same vehicle be used standalone in a different vehicle? Does the bcm need to Communicate with ECM pcm etc for it to function properly?
The BCM needs to be married to the vehicle VIN, plus the mileage has to be maintained (USA laws). The BCM also will have to learn the security code for the vehicle from the PCM, or the vehicle will no longer start. With some GM models this can be done using either the Tech2 scan tool, or the MDI scan tool, and GMs Techline Connect SPS2 system (all for a fee of course).
With some other GM models the BCM once used cannot be reprogrammed, so only new or factory remanufactured BCMs can be installed.
Sorry, let me clarify, the original married factory bcm is still functioning as primary on lt Malibu receiving Transplant Factory upgrade features from a Complete Ltz donor vehicle Instead of having to reprogram the BCM on the receiving vehicle, can the BCM from the Donor vehicle be transplanted with their respective components As a secondary controller dedicated only to the parts that it comes with?
Not without additional work to marry the replacement BCM to the vehicles existing PCM. Or even if you replace that as well, to marry the VIN of the vehicle to the whole shebang. Along with maintaining the mileage, again state and federal laws require this step to be performed, odometer reading wise. I'm not familiar with whether the donor Malibu BCM can simply be reprogrammed using GMs SPS2, or whether you would have to replicate those options manually at the EEPROM chip level (SPS will typically disallow options that do not match GMs international VIN database of how the vehicle was originally built).
I have a 2012 GMC Acadia with identical looking radio will this procedure work, Also going to acquire a radio from the salvage yard
If it looks the same faceplate wise yeah this approach will work. But the boards did vary across makes and model years so the eeprom chip may be in a different spot. Should be the same number though. GL
I know it's been a while since you made this video, but I hope you see this question.
Is there any way to unlock these radios, and run them "stand alone", like on a bench, or even in an older (non CANBUS) vehicle? Sure would make a nice addition to my 80s Pontiac.
Thanks!
By the year range radio this video covers, no that would not be _easily_ done. The reason being has nothing to do with the security VIN lock feature. But rather that all more recent / more modern since the 1980s GM radios require communications over the bus with the body control module (BCM) to power on. Without a BCM network connection they just will not power on, which is why I had to use one on the bench for this video.
Hi, great video.
I have a 2013 Chevy suburban that has the UUI unit, and bought a UYS unit that I would like to install instead. what tool do you use to unlock the UYS? Im sure it lock on me once I attempt to install it and power it on.
It will definitely come up VIN locked if it's coming from another vehicle. If you bought it as a new GM part it won't. And if you bought it from a radio shop or reseller, you can often get them programmed to look like a virgin brand new one without the lock as well. But if it's used from a salvage yard, you need a Tech2 scan tool for the years this video covers.
Your 2013 is a bit too new for this video though, and you usually have to drop down to editing the contents of the EEPROM chip on the radio's board instead for anything newer than 2011 or so DIY wise. You might be able to get the local GM dealer to do it, but it would have to be the exact same radio that was available for a 2013 Suburban. Otherwise the dealer tools won't allow it to be programmed.
@@DrShock thank you for the prompt response, but what do you mean by "it would have to be the exact same radio that was available for a 2013 Suburban. "?
my truck is 2013, and the radio I bought came from a salvage yard from 2013 suburban, new radio is a touch screen, vs the old one which is identical to the one you have in the video.
would I still be able to program the radio from the salvage yard and work in my truck? Im ok going to a dealer.
thank you
So what you describe is the right path. What I meant previously was when you do a GM radio _upgrade_ , and need to still have it work with the dealer scan tools and software updates, you need to use a radio that you could order/buy new back in 2013 on a Suburban. So you have that and are gtg there and that's all ok.
But given you stepped up to a navigation type radio, there _may_ be additional work required to get that working in a truck that only came with the non-touch setup. There may be other wiring harness parts, other modules that need programming to complete that configuration. But idk those details as I'm not familiar with the 2013 touch screen radio option used in trucks. I do know on the GM cars of that same year, with the MyLink upgrade, you can't just swap in the touch screen radio alone and have it work. They have a different harness.
You may have to research this upgrade a bit, just to be sure you have all the piece parts. Once you do, and get it all cabled up and installed, yes I think _some_ GM dealer could then handle the VIN unlock part. Most dealers won't touch something that didn't come shipped from the factory originally, but some will. You may have to shop around. Hope that helps.
@@DrShock excellent information, thank you very much! I’ll find out more once I receive the new radio
I have an 08 radio, it’s very different from this one. Not sure which chip to remove to disable the eprom/vin
Unfortunately there are a few different circuit boards GM used inside the radio, even when the faceplate design looks the same. If the chip has the same number I show in this video, then it's location isn't really important. But if you do not find a chip with that number, then it's one I haven't personally worked on yet to identify.
Hey , thanks for the great video
I have a question ,
can this procedure be done with a Chinese MDI or only the tech 2 ?
Will a knock off mdi or tech 2 have these functions also ?
Thanks and I appreciate you taking the time to put these videos up .
You could use an MDI, or an MDI 2, or a clone, to run Tech2Win. I have not personally looked into this, as I have a physical Tech2, but the same VIN relearn function for the years this video covers should be there. Later years I don't believe Tech2Win retained the VIN relearn option anymore.
Most of your videos recommend a MDI tool for 2008+ programming. I have read about VCX nanos as well.
I have a 2009 Silverado hybrid with nav screen I am simply trying to enable the backup camera on. In 2023 what would be your preferred device for this?
VCX nanos are cheap, but as with anything else in that get what you pay for category. When GM rolled out their new Techline Connect software, the nanos were completely incompatible with it at launch. The MDI clones on the other hand, remained 100% compatible from day one.
Personally, I rely on two tools for all GM vehicle work. For vehicle models that initially came out in 2008 and earlier (that includes some models that went up thru 2013 like the Chevy Avalanche) I use the Tech2 clone and TIS2000 for SPS prior to 2008 only. For anything that launched after 2008, I use the MDI clone using Techline Connect for both GDS2 and SPS2 (previously I'd use TIS2Web and SPS1). Never have had any compatibility problems with either and wouldn't recommend any other tool for a GM vehicle other than perhaps the genuine original versions if you have that kind of coin to spend.
You have to keep in mind what it would cost you to pay the GM dealer, or even an independent service center, to do this reprogramming and factor those savings into what you are going to purchase. Next you have to factor in how often you might need to use this tool. For a one time programming event, I'd suggest to pay someone to do it. But for on-going needs, I'd buy my own tool(s).
@DrShock Thanks for the thorough reply. I'll avoid the Nano! As for my use case.. the head unit to flash is a 2009 Silverado Hybrid. We also have 2 - 99 Silversdo 1500s but I suspect the MDI will have limited use there. I also have a 2014 Silverado, which I would like to upgrade the 4" screen to larger. If the MDI is capable of that it would be worth the cost.
I
The MDI clone can handle the older models using GMs Tech2Win emulator. It's basically a software implementation of the Tech2 that runs on a Windows PC or laptop. No support for Apple Macs though.
The only other point is the cost of the software. Whether it be an MDI clone, or any other J2534 compatible interface like even the nano, GM sells access by subscription at www.acdelcotds.com by VIN. You may want to check out those prices too before deciding whether to own the tool, or just pay someone else to perform the programming.
@DrShock I will do that!! Thank you. So good of you to reply to so many individuals. Repetitive I'm sure, but everyone thinks their own use case is special (kind of like me).
Watched video a few times removed the chip from my radio, plugged it in said no vin then changed to locked right away. Un plugged it did it again radio worked for a few seconds then locked what do I do?
So if you're removing the chip from the circuit board (be sure it's the correct EEPROM btw), you still need to do the reprogramming of the chip with the correct VIN so that handshake with the body control module (BCM) can read what it expects to see there. Then resoldering the EEPROM back to the circuit board. Or using a Tech2 scan tool/Tech2Win emulator to perform a VIN relearn is the other alternative approach I showed of course.
I have a similar radio. Its from a 2008 Saturn Sky with multi-disk changer. The mother board seems to be more complex but I did find an EEPROM. Its an ATMEL 24C128 (quite a bit more cells than the 24C08). I did not see another EEPROM so I assume that this is the one that handshakes with the BCM. Do you know if the location for the VIN is similar to the one that you dissected? Does it have the "V" next to it? I just ordered an EEPROM read/write module to change the VIN word. Any help would be greatly appreciated.
I have not worked on that model, but it sounds similar to the 2011 one I did here th-cam.com/video/iBXLnHlbnDo/w-d-xo.html with that particular eeprom size. The good thing about clearly marked eeproms is you know what you have, and can safely try and read it (just be sure you align pin one on the test clip/socket correctly). These are all very similar, if made by Delphi, and all seem to use a 24XXX chip of some capacity. When it's marked with a Delphi part number, is when it gets harder to locate. Plus some board designs do not use an 8-pin chip, there are some with only a 3 pin chip.
@@DrShock I read the EEPROM and the VIN came up as 0G8MG35X19Y104638. The "0" at the beginning puzzled me. I changed all of the place holders (including the leading 0) to ff. I havent tried it in the vehicle yet but if it doesnt work, Ill turn the first character to a 0. Any thoughts?
@@dpray3725 Some models don't use the country of manufacture digit (what would usually be the 1 (NA) or 3 (Mexico) as the first digit. You should leave that the value you originally found it, sounds like 0 in this case. Your Saturn (a different kind of car an all right) might be different for this time period. If you see Chevrolet from 2011 onwards th-cam.com/video/iBXLnHlbnDo/w-d-xo.html that I did you might see a more recognizable VIN format to the Sky.
@@DrShock Thank you for all of the great information. I will be swapping out the radio in my Sky today. On another note, my old radio has an issue that pops up once in a while. The display goes weird and a couple of the menu buttons won't work. After the car has been off for a while and I restart it, the display is normal and the buttons work. I was thinking that maybe the pins that connect the front panel to the unit may be dirty. Does that sound like a common issue with these radios?
@@dpray3725 Haven't seen that one before. Doesn't sound like a connector issue given the display being affected, but rather internal to the board inside the radio. Perhaps a heating up related fault on the board, perhaps due to surface corrosion. Really impossible to say without opening up the radio and eyeballing it. I'd just swap out the circuit board from another radio of the same part number if I saw anything amiss.
would a stereo from a 2007-2008 Acadia have problems with the VIN relearn and reprogram with a tech2 if it is being installed in a 2011? the part numbers are different but the Pins on the back are the same.
Thanks.
The Tech2 is going to read the VIN from the PCM, or BCM, not the radio. It may attempt a different approach for 2011. If it fails, try building the vehicle as a 2008 or 09 instead.
@@DrShock thank you so much for the reply,i am going to try and get the eeprom programmer in your video. The tech2 is not avilable anymore.
Is this strictly with just the Tech 2? Or did you have to gain security access after purchasing?
You can unlock the radio on these years solely with a Tech2, for _certain_ vehicles. Around this time GM was transitioning to blocking the use of used radios, and so started to remove this VIN relearn feature from the Tech2 (and Tech2Win). If the menu item does not show for your make/model/year, then you have to go the EEPROM chip edit route instead.
@@DrShock Thank you! I have a 2007 SAAB 9-3 & I’m looking to purchase a Tech 2!
This makes me wonder if it's just as efficient to swap the faceplate and cd player rather than the entire radio. Because that's the issues with mine
That won't do anything about a VIN lock, which was the subject of this video. But that could be a repair approach for issues with the keypad or display.
Can the radio work if the chip remove from Circuit?
Will the lock go away
Removing the chip will remove the VIN lock because the BCM can no longer make a compare. But along with that you would lose the ability to ever update the radio with new programming. And removing the chip will also remove the ability to retain some user settings.
I change out the bcm 2010 hhr mileage is wrong and radio locked, how can I fix both ?
I have only Teck 2 and autel 806 scanner
Thanks
This video covers the radio unlocking, and shows how you can do that with the Tech2 (you'll likely also need a CANdi module for the 2010 HHR). The mileage being wrong is likely the result of someone installing an used BCM (or possibly instrument cluster), this cannot be corrected using any scan tool with GM vehicles.
Instead, you usually have to replace the used BCM with a new or remanufactured BCM from GM. The Tech2 will allow inputting the mileage when using a virgin BCM, but not allow this step with an used one that has already been programmed. You might also try using SPS2 to overwrite the calibration of the used BCM, but that route is often hit or miss with an used BCM. SPS2 does not support using the Tech2 so you will need an MDI (or similar J2534 interface).
Is it possible to unlock and use a newer radio(from 2009 with a USB on front) in a 2007 G5? I am installing the amp,and all speakers as well. I was wondering if i could remove the EEPROM from the original 2007 radio and put it in the 2009 unit?
These radios have different circuit board designs in them depending on whether they were OEM by Delphi or Panasonic. You would have to have the same manufacturer to swap chips due to content differences between them. Also on those 2009 radios, the amp/speaker setup will vary depending on whether they are Panasonic or Delphi as well (Delphi radios only work with the 8 speaker setup). And the backlighting varies by make (i.e., Chevrolet is blue, Pontiac red, Saturn orange, etc) even in the same year. GM did not intend their gear to be broadly plug and play, but rather very make, model and year specific. So when you try and mix and match you have to navigate a variety of these issues.
all right...ill open it up and have a look...the 2009 radio came out of a G5 and the 2007 i have is a G5...and im intending to use all the speakers and amplifier that came with the 2009 radio...was hoping it would work with the 2007 bcm ...kind of an oem upgrade for the sound system in the 07 on the cheap from wreckers...lol...thanks for the response!! love your videos...the tinkering is awesome and i love to learn new stuff thats a challenge!
@@DrShock
Here's a really good blog post on what you're trying to do that may help, I had to dig thru my bookmarks to re-find it - www.christopherprice.net/upgrading-your-mid-2000s-general-motors-radio-with-a-usb-port-2773.html
@@DrShock update: got the ch341 and a driver for it.worked like a charm! changed the VIN through the EEPROM on the Delphi 2009 G5 USB radio that was locked to the VIN on my 2007 G5...didnt need to modify the programmer for 5V as it worked as was shipped...thank you so much for the replies and the video!! much cheaper than purchasing a TECH2 !!
Hey just watched your video on 2007 - 2010 How to VIN Unlock Salvage Yard GM Radio w/ Tech2 OR Manually Programming its EEPROM and you said you modified the CH341 for 5volt automotive use, How did you do this?
There's a link in the top right of the video, one of those TH-cam cards, to another video I walked folks thru that on - th-cam.com/video/hPKckby54uA/w-d-xo.html
I reviewed the link, do you need the conversion the small board to read an write to a 09400464 chip? I have modified the CH341A mini programmer 5 volt and lifted the terminal of U1 as shown in the video.
@@robertwilson8510 It's the voltage that is typically the problem doing the writing. In general, if you can read a chip you don't need an adapter. For that particular 09400464 as I mentioned in this video it's a 24C08 type chip, which does not need an adapter anyway. The adapters mentioned in the linked video are for 93XXX type chips, which you might find in an instrument cluster or BCM not a radio.
NICE 👍 PENCIL ✏️ LOL 😂 AND THANKS FOR THE INFO. DO YOU KNOW WHAT TO USE FOR AN ANTENNA FOR MY CAR RADIO 📻 I AM USING IN MY HOUSE SO I CAN GET AM & FM I TYPE IN ALL CAPS BECAUSE OF MY BAD EYESIGHT
Thanks. Rather than a pencil, that's actually a black nylon tool called a spudger. Best bet for an antenna for indoors is to get what's called an extension cable. Your local NAPA auto parts should have something like this to fit the GM radio. You can use that to reach a regular vehicle antenna outside a window, or splice it into an outside TV antenna.
Hey I am using the TL866 but have a terrible time trying to get the chip to in circuit. I did upgrade to the new clip you recommended. Tonight it came up with no errors and read but the table had no info. I had to take it off to get it to read. I just cut the cheap clip off and added the new one to that adapter but always have trouble. Is there an adapter you would recommend to use with TL866 programmer? Thanks
The TL866II+ (only one I'm familiar with) has a over current protection feature which renders it pretty useless for in-circuit automotive work. Basically anything you try to clip on to will draw too much current, and generate overcurrent related errors (sometimes randomly). For the TL866II+, I always desolder the chip and read/write it outside of the circuit.
@@DrShock which one would you recommend for in circuit programming?
@@michaelbox7285 For automotive work, where there is not going to be some sort of standard in-circuit connection or bus, then I'd prefer something CH341a based like the one linked in the video description. There's absolutely no over current checking on such simple programmers. So you have to be alot more careful. Note though that there are going to be *many* module circuit boards that cannot be read in-circuit still, their designs will cause too many other chips to be powered on by the testclip creating bus contention. So in those situations you'll have to desolder and work with the chip out of circuit anyway.
@@DrShock What software do you use with it?
@@michaelbox7285 It's in the description of that video that you can tap the white circle _i_ icon in the upper right on from this one. It's called AsProgrammer.
Any advice for a unlocking the Panasonic version on the bench? Found an AT24C128 on the board and it gad similar data. 6 digits followed by a K (checksum?) then the radio serial. I changed the 6 digits to current VIN last 6, cleared the K and left the serial alone. Still locked.
I've not worked on the Panasonic models. But if you are sure you have the correct chip (with the partial VIN stored in the chip matching the donor vehicle being the best test of that) try leaving the "K" and just going with 0xFF for the partial vin. Leaving everything else as found in memory.
Also scroll thru the entire memory to be sure there are not muliple copies of the VIN, I've seen that approach employed with some modules as well.
@@DrShock Thanks for the reply! I think I figured it out. I unfortunately do not have the donor VIN so it wasn't clearcut. I noticed the 6 digits I had assumed were the old VIN that precede the serial are actually the first 6 digits of some kind of bar code on the SIDE of the case. The sticker has the GM part number just like the main sticker on the top, but underneath is a long string of characters that begins with (20T). There's no indication what this number is... but the 6 digits I thought were the VIN are right at the beginning.
So I reflashed ori.bin, left that K alone and kept searching the dump. I found a 17 digit number nearby... however, it starts with a 0 which is why my eye didnt catch it the first time. The 0 is followed by GNDA23P66etc. 0 isnt a proper country code for a VIN, but using the 9th digit (check digit) I was able to figure out it should be 3GNDA23P66... which comes back to a Canadian Chevrolet HHR which is in fact the donor vehicle.
However, Im unsure whether I should 0xFF the whole string or leave the 0 and fill in the rest with the new VIN. This is a favour for a friend so I dont have the vehicle here to connect and try both ways.
I'll gamble on filling in the new VIN rather than FFs and report back so anyone searching will have the answer.
Thanks again!
Many of the newer radios omit the VIN position, so if it still gives grief I would restore the original value in this position and only edit the rest of the VIN.
@@DrShock Confirmed working. Edited the 16 digit partial VIN to the new VIN leaving out the first digit. Kept the 0 same as it was originally. Memory device is an Atmel 24C128. Read in circuit with Orange5
Thanks for the video!
Hi, great video. What happens if we just remove the eeprom? Would it still work ?
Some old models, like this one, will only lose preset values and customizations that are also stored in the memory chip. Some newer and more modern models will no longer function at all.
I have one of these cars but the stereo is silent, no audio comes out the speakers, also, no locked message. I was told it's because of the antitheft thing, so I was wondering if I get an after market stereo would it work or does the power signal comes from the computer or something like that? Supposedly the previous owner hit a rough pothole and it stopped working since. The radio turns on, everything seems to work, clock, radio presets, volume, etc. but it's silent, no sound comes out. Any help would be appreciated.
Power message on these model years is over the computer communications bus yes. If you go aftermarket, you'll need one compatible with that architecture.
If the OEM radio were in antitheft mode, it would say locked on its screen. If it doesn't, that's not the problem you have. No audio at all could be a blown out amplifier, what do you get from the aux-in jack on the front face plate?
@@DrShock Ah why didn't I think about the aux?... yeah no audio from the aux jack either so I guess the amp is blown right? Thanks for the prompt reply.
Presuming of course the radio has power (the display indicates AM/FM stations and AUX-in when selected as the source, etc) it's either inside the radio or it could be a wiring harness issue. Before condemning the radio, I'd pull the dash cover and look behind the radio to inspect the connectors and the wiring harness condition for shorts or opens.
@@DrShock I'll do that this weekend, hopefully it will be something like that, thanks!
Do you need to do the 5-volt mod to the ch341 programmer to be able to program the 24C08 IC?
Depends on the chip manufacturer, but usually all automotive EEPROMs require the full 5 to program successfully.
I am trying to program a GM radio. I will do the mod and try again. Thank you!
I managed to program the 24C08 in my GM radio without the 5-volt mod. Thank you for your help!
I've watched a few of your vids and scoured the internet. I'm wondering if my 6 cd changer 2006 trailblazer radio is the eeprom you have to desolder, radio pn 15234935. I have completely disassembled this thing and there's only (1) 8 pin chip on it. pn 1001375
That radio part number will be one that has a VIN lock eeprom chip. Though the style is more similar to this video th-cam.com/video/ZIRefUhyJOQ/w-d-xo.html instead. I haven't worked on your model radio before, and that number from the chip doesn't come up anywhere. If you are sure that's the only chip of that type, I would try first to just carefully desolder it and see what happens. If it was something else, the radio would stop functioning. This kind of experimentation is what I end up doing anyway when I get a new type of radio.
@@DrShock Thanks. I started at that video, but I thought I'd check the newer model to see if anything changed in the concept. I'm not set up to desolder chips but I'd like to practice. I need to get one of those heat gun style stations.
@@DrShock Alright got the chip removed, read, vin edited and resoldered. It actually works. Can’t believe I pulled that off. Thanks for your vids.
Great video I have a 2007 Tahoe which I replaced the original radio that looks like the one in the video with a navigation radio. When I use my tech 2 and go to radio as shown in the video it does not have a f5 module set up choice. Can you tell me why that would be?
The Tech2 is going to be aware of what options were available in a given model year which is why you build the vehicle in the menus. While there was a navigation radio available from GM in this model year for the Tahoe, it has to be that _exact same one_ and not a later one from say 2010. I'm not familiar with the nav models from these years. But it's possible that the nav model either did not support a VIN relearn action in its firmware, that you're missing the wiring harness for the GPS leg of its circuit, or that you don't have a 2007 radio installed in your 2007 Tahoe.
There was an obsolete service bulletin at one time, PIT4007D, that suggested a workaround of building the vehicle as a 2006 Monte Carlo instead. You could try that, but it only will work with a physical Tech2 tool _NOT_ the Tech2Win emulator:
F0: Diagnostics
2006
Passenger Car
(1) Chevrolet
W
WN Monte Carlo LTZ
F6: Body and Accessories
Entertainment
F5: Module Setup
F0: Radio
F0: VIN Relearn
When prompted to erase the theft data: "select yes".
I have tried the 06 Monti trick and it does not behave as I have seen in videos. The radio is supposedly from a 2007 Tahoe and my understanding is it should work 07-09. The navigation radio has spaces for two more plugs and one more antenna jack for the GPS . One of the others is for the vss voice the other I'm not sure about. There is a kit available that contains both plugs and wires. Is it possible that I need to have these other connections made to be able to make this work?
GM makes it very problematic to retrofit options into their vehicles where they were not originally assembled with them. You will not, for example, be able to update the firmware on a non-original nav radio because the GM service system is driven off the _as-built_ VIN association with RPOs (regular production options). This is why a GM dealer cannot unlock many of these radios, leaving only the circuit board level EEPROM chip editing as an option in such cases where the Tech2 is unable to perform the VIN relearn for whatever reason. I doubt the missing GPS harness is affecting the lack of a Tech2 menu for this, but it will affect operation of the nav unit once unlocked.
Thank you so much for your very fast replies. I don't know if it is worth the time or money to invest in the equipment needed to go directly to the eprom. I'm not sure I can even find the eprom in there. If I could find it at this point I would probably pull it out. I bought the radio not really caring about the navigation part. The original radio is showing a couple codes and I like the touch screen. I think I will try to locate the eprom and pull it.not sure how but its in there somewhere. Thanks again for all you help.
Dear Sir , Thank you for your sharing the best video in advance. Would you like to explain to us the last part of the key code for unlocking the radio ?How do you know that input 4444? I am grateful for that if you reply me . Thank you so much ~
What is the time index of the video you are asking about here?
@@DrShock Dear DrShock，Firstly tks for your feedback. I know it had been a long time since your video uploaded,Sorry for my interruption. I just begin to play this car radio and i like this delco model,therefore i wanna see if any luck i could unlock this car radio and make him alive at home. Thank you so much.
Thank you
Is it me or is it so hard to attach the clip to the eeprom chip? Or maybe mine doesn't want to attach at all. I tried and tried countless times but could never seem to get it to read; however I got it to read one time but only half of its data was shown. I removed the chip the most crude way possible to get it to read, yet nothing and I cannot seem to get the chip soldered in easily. I have the file saved when I got it to read.
The test clips are usually more trouble than they are worth, especially the cheapo Chinese ones. I almost always just use Chipquik (link in the description) to desolder the chip and read/write it off the board. Or if not, a pogo-pin adapter instead of a test clip. Only a few Delphi boards will work with the testclip approach anyway (what happens on most is the +5V from the testclip then powers up other devices on the board conflicting with the bus you want to R/W on so you end up with all zeros or missing data). But I show a testclip in the videos where I know it _can_ work since I recognize most viewers are not comfortable working with soldering.
Wanted to ask a question about another one of your videos if possible?
Umm, sure. But why not as on that video? ;-)
I'm new to these salvage yard radios with vin # locking capabilities. I figured I have one, going as far back as
2002 Pontiac Bonneville Deleco radio # 25721601 has 2 rows (in 1 connector of 16 pins). each of the 2 rows
of pins is labeled with 1 - 16 and pins 1& 2 in the bottom row wires are purple and marked ( i brought up the radio
wiring harness wiring diagram for SE trim level) says those 2 purple wires are for computer data line system.
I take it, it's what your talking about. All I see is the clock . so it won't power up with out data
So if I understand u correctly, I have to go back to the junkyard get the fuse area stuff- the data reading port under the dash- the module ( I'm uncertain what module) and add a switch and and buy scan tool with the screen and learn from
the demonstration on info from a shop manual to wire it all up I can play and test these newer digital turn on radios
in my basement at my radio bench. and I will have to get the vin number of the car I got it from, off the windshield lower left or where ever it' written . WOW there's no there way to use these in your house for a garage radio?
Without being able to communicate with a body control module (BCM), the radios remain inoperative.
@@DrShock thank you, so it's true, I need the body control module, thanks for confirming it will not turn on with out it.
I have what appears to be the same radio on the outside. Internally, it is not the same board. this board only has two 8-pin chips. How can I tell which to remove. My radio is a Delphi P/N 280 76188, manufactured date 03/08/07.
Yeah there are several different PCBs used, depending on the GM vehicle it came out of. They are cosmetically the same, but as you're seeing they are not electrically the same. I'm not familiar with that board, but the EEPROM for that year should have the same number on it as what I go over in the description text.
This is my question. about the video titled: "2003 04 05 Cavalier Sunfire Salvage yard BCM...." I understand that if you put a junk yard BCM in, then you will get the wrong mileage and the radio will lock. In my case, have a chevy impala 2001 base 3.4 Liter. Now, if i put in this junk yard BCM for this particular car, i will get a locked radio and the mileage will change to the one in the junk BCM. I,m sure i will mess up any soldering. But what else will happen. It's an old car and will probably get rid of it in a year. I can live w/o the radio and the correct mileage for now. I just need the car to run w/o clicking all the time in the warm weather, lights flashing uncontrollably and draining my battery every couple of days. If I can fix this part, and just run the car normally, i would be happy. but question is, is that the case.? will there be other troubles coming up too.? thanks alot for any help you can give. Jumbo Doorock means big idiot in russian. And sorry, i know, not really related too much to this video. or is it.
You might consider posting on that BCM video next time, as perhaps others will chime in as well. But, for a 2001 era BCM, presuming you get _exactly_ the same GM part number as the original BCM, then you would face _at least_ two other issues on top of incorrect odometer readings and a VIN locked radio and XM receiver. Any differences in powered options between the two vehicles controlled by the BCM would be disabled. An example might be (not all vehicles had this in the BCM) cruise control or fog lights. Another difference would be the theft security system that controls fuel flow to the engine. I would expect the security light on the dash to come on due to using an used BCM, but this you should be able to do a relearn on that manually w/o a scan tool. If you're not comfortable working at the circuit board level to move the EEPROM from the old unit to a replacement, and don't have a suitable scan tool, I would suggest getting a remanufactured BCM where it can be pre-programmed to be plug and play instead (e.g., CARDONE 730320). There are also some outfits online where you can send your old BCM and they will pre-program the reman unit for you to be plug and play. Still cheaper than going into a shop in person locally.
Did we just watch Dr. Shock steal a radio? Lol just another day at the office
hello I am trying to unlock my radio. the radio is for my 2007 corvette and the radio is from a 2008 corvette. i did the 3,3 to 5v swich and a am getting an error saying error connecting Ch341(-1)
Sounds like a USB connectivity issue, you might want to recheck your drivers and programmer software setup to be correct for where the CH341a is connected.
@@DrShock where can i find the most up-to-date drivers
I include a link in the description for the particular board I had. Unfortunately there are several different flavors of these CH341a programmers, but if yours appears identical to what I have in the video the linked ones should be correct. They are from the actual chip manufacturer.
The autel scanner will also clear theft lock from radio. No programming required
a special function?
I am trying to unlock and use a salvage yard radio in 2009 Suburban using Tech2Win. Tech2 menu options doesn’t show F5: Module Setup, it only shows options F0 through F4. Is there a way I can get option F5 in order to rewrite the vin?
Yeah, GM removed the radios VIN relearn option around 2006. Both the Tech2 and on TIS2Web with the MDI tool. There was a temporary work around in service bulletin #PIT4007B that applied thru 2008. It might still work for your 2009. Try building the vehicle in the Tech2 menus as a 2006 Monte Carlo instead to reveal the menu option:
- F0: Diagnostics
- 2006
- Passenger Car
- (1) Chevrolet
- W
- Monte Carlo LTZ
- F6: Body and Accessories
- Entertainment
- F5: Module Setup
- F0: Radio
- F0: VIN Relearn
@@DrShock I just tried it as Monte Carlo LTZ and “F5: Module Setup” is not an option.
Is there anything at all in the menu for Radio there?
@@DrShock Under Entertainment, there is F0: Diagnostic Trouble Codes
F1: Data Display
F0: Digital Radio Receiver
F1: Radio
F2: Special Functions
F0: Radio
F0-F3: (speakers)
F3: Snapshot
F0: Radio
F4: Module ID information
F0: Digital Radio Receiver
F1: Radio
Under F2: Special Functions, so you see nothing for a VIN relearn there either then. Yeah, this is why I did these videos in two sections, some of the 2009-2010 like the Cobalt or G5 still have the Tech2 menu entries. Others like the Suburban had it removed after 2006. The only option in those situations, is to go to the board level and unlock it at the chip level.
Have a replacement radio that shows lock when installed. Pulled the radio, cleared the old vin, and put in the new vin to my vehicle. Install the radio back in truck and now all it displays is the time. Pressing the power button on the radio does nothing. Are there any other changes that need to be made in the eeprom? Radio is a Delphi 28246867
GM would make changes from time to time in the communications bus protocol used by the radio. So it's important that you only use a radio that would have come with the truck originally. You can be off by model year salvage donor wise, but not radio model. Your situation sounds like the radio is incompatible / cannot communicate with your years body control module (BCM). So it never get's the ok to power on signal message.
@@DrShock If I leave the vin area blank and plug the radio back into the truck, it automatically writes the vin to the eeprom, so it must be communicating with the BCM somehow?
Hmm, yes that would suggest that there is some level of comms then. Are you sure this replacement radio is not defective? I presume the original radio still works fine?
@@DrShock Original radio does work, has some bad speaker outputs, guessing internal amp was going bad, so grabbed a replacement radio to put in and try. Was said to be in working order when I purchased it. If I load the original file back to the replacement radio, the word locked appears back on the screen.
If all you're doing is changing the VIN, and leaving the rest of the EEPROM contents alone, and know it's a good radio, I'd have to suspect it's not fully compatible with your model year. You can google the GM part number and see what years/vehicles it was originally installed in by GM when new. And then determine if your vehicle falls into that range or not.
So great video thank you for posting - So I tried this but keep getting " Connecting error CH341 (Not found) IC not responding - I have a GMC PN 20935121 Delphi radio, the eprom chip is labled 09400464 I/SN1033 3DE M (microchip) and I have NeoProgrammer v 2.2.0.10 - from your links I purchased the AiTrip CH341A 24 25 Series EEPROM Flash BIOS USB Programmer + SOIC8 Clip - I'm not sure if I have to make any of the changes to the CH341A or what I'm doing wrong but thanks for the post again - I may just byte the bullet and purchase an unlocked one but had to try this first.
That sounds mostly likely to be a problem where the particular circuit board is powering up other chips (via the SOIC8 clip) and preventing you from reading the EEPROM. I don't use NeoProgrammer software though, but if everything else has been verified OK that's all it could be.
It's a common situation, you will have to desolder and remove the chip from the board first and read it that way. Be sure you've eliminated the easy stuff first though like clip not correctly aligned with pin 1 of the chip, USB drivers not installed correctly, etc.
@@DrShock thank you sir, what software are you using?
I use AsProgrammer, from the link in my CH341 mod video. I believe that video is linked from here in the upper right corner (the little _i_ in a circle icon).
@@DrShock Thank you again and I did see that video too and I purchased that same CH341 and wondered if I still had to mod for 5 volts but let me try that software - and again thank you so much for taking the time to respond - I will donate for sure
I understand how you built the bench, but do you have a video breaking it down showing what wires get plugged where? I understand 90% of it, but there is a slight amount I'm not getting. Thanks
I did walk thru this in the video, using the service manual wiring diagrams. You'll need to connect those numbered pins I go over exactly as I say during the video. You have a group of B+, and ground of ground, a group of lan, and a group of switched ignition.
@@DrShock What program did you use for the EEPROM programmer? Or is that the Tech2Win program?
For some vehicles, there is a VIN relearn function built into the Tech2 (or the Tech2 Windows Emulator tech2win). But not all have this. For those that don't, you have to edit the EEPROM directly. For that any software that can read/write the particular EEPROM chip type will do. I am using AsProgrammer (see the description and linked CH341a video).
So can I just remove the chip and put it all back together and would it work?
On this particular radio, that hack approach is an option but you may lose some preset radio station functionality. You may also lose XM receiver functionality (some folks have had issues with that but its second hand info). But not all GM radios will allow removing the chip, some will simply no longer function if it is removed. If you do not have the right equipment to desolder the surface mount chip, you can permanently damage the circuit board which may render the radio inoperative. So if you're going to go this route, only lift off the power pin not the entire chip.
The correct repair is to either use the Tech2 or Tech2Win tools to relearn the VIN, or to _edit_ the chip with an EEPROM programmer to change the VIN string manually.
Does the usb programmer have instructions on where to find the software to install the drivers
If you tap and follow the TH-cam card in this video (white circle _i_ icon in the upper right) it will take you to another of my videos on the CH341a EEPROM programmer. The description for that other video has info on where to download the software and drivers.
Thanks.
1. I want to say how much I appreciate your videos, there is a severe lack of GM vehicle programming in my area in terms of private shops and capable/willing dealerships so your videos help me fill in.
2. There is another way, I had a 2008 Silverado work truck and the customer swapped radios which locked it. I had no option with a tech two to do a vin relearn for some reason (perhaps you can elaborate?). I poped into sps (because I had to re learn the cluster anyway) originally I had tried to just reprogram the radio with the same configuration which would not take in just errored out then after digging around for a little bit it dawned on me that obviously this was from another truck and I reprogrammed it with the appropriate calibrations that would have came on that trucks radio and voila it unlocked it and the radio works perfectly fine.
Thanks. Around 2008 was when GM started blocking the VIN relearn feature from models. It wasn't just radios, they wanted to prevent the reuse of used modules in general (allegedly for security reasons). As you discovered, for awhile you could SPS around it, but nowadays even that will not work and you either work at the chip level or spend the coin on a new module. Plus SPS costs money, as it's been a cloud subscription service ever since the 2009 model years (no TIS2000 DVDs anymore). So I find it cheaper, and faster, to just swap EEPROMs.
@@DrShock Thanks for the clarification & For reference this was done in SPS2, so it still works HOWEVER there is nothing about or a procedure to do a Vin relearn, the reprogramming just happens to work.
Try it on a 2012 or newer ;-)
Just wondering. Why can’t we just swap-out the entire board (from the ‘locked’ radio), which has the EPROM, with the original board from the original radio?
That is certainly an option, but _only_ if the GM/Delphi part numbers on the white label match _exactly_ as internal programming and circuit board differences are often what drives a change in part number.
@@DrShock good to know 👍
Another great video, the other radio unlocked no problem. But now figured out it needed a factory nav. I have that one apart now but having trouble finding the eprom on this one. Any clue on one of those. Factory 2007 model GM nav.
Haven't had to work on a nav model yet. But typically there will be a long _part number_ silk screened on the chip by Delphi that highlights the SOIC8 package EEPROM. Though the Delphi XM receivers use a SOT23-5 package EEPROM so worth looking for that type there too.
Ok think I found the eprom 95640wp but I am not sure what chip to choose in my programmer. It seems like looking at the data sheet that pin 1 is opposite of the 2408 family.
You need a programmer that natively supports the 95xxx EEPROM family, at 5V as an automotive grade device. You can convert an inexpensive one, and couple it with the software to handle those - th-cam.com/video/hPKckby54uA/w-d-xo.html
@@DrShock Yeah figured it out and is now working. The few that I have done only have like the last six, this nav unit had all but the first digit.
Thanks for the help.
That's the approach you'll see me go over in another week or so for the 2011 - 2015 base radios from Cruze and Camaros. It's the full VIN without the country of manufacture digit now. GM also removed the VIN relearn functionality that was in the Tech2 from GDS2.
So here's an interesting one. My idea was to take the old "uplevel" radio (like you have in the video) from my 12 impala and install it in place of the "Alarm Clock" radio in my stepson's 09 Impala. I had just purchased a VCX Nano and used that along with Tech2Win to attempt to program the 09's VIN to the 12's radio. Followed your instructions to a "T", however on the Radio menu, there is no "F5 Module Setup" option in the menu (it just ends at "F4 Module ID Information." I went back and tried setting the vehicle up as a W-Body every year from 06 to 13 and no such luck! I guess this begs the question, is this a limitation of the bootleg Tech2Win software, or am I just going to have to bite the bullet and subscribe to ACDelco TDS?
I wouldn't expect it to be a limitation of a Chinese hacked copy of Tech2Win. It's very likely the same as the TDS subscription one.
GM removed the VIN relearn capability for most models starting in model year 2011. I did another video about that here th-cam.com/video/iBXLnHlbnDo/w-d-xo.html so I would expect the 2012 Impala to similarly not have the feature and either Tech2Win communicates with the radio and determines that, or GM has modified Tech2Win for the new policy. Pure speculation based on your experience. I don't think you would have any luck with an SPS subscription on TDS either, as SPS is most likely going to do a VIN lookup and find that the radio part number wasn't valid for 2009. For $40 I couldn't see taking a chance on that outcome.
For this kind of non-factory original setup, you might have to go the route of removing the chip from the radio circuit board to unlock it. I don't usually suggest that route as you'll lose some other features like presets and factory amp support, but can't think of any other route here.
@@DrShock Appreciate your advice! I might just try the CH341a method and see if that works, as it's not worth the trouble if I have to resort to removing the EEPROM to get it to work.
@@DrShock I found a workaround. I downloaded and installed a BIN file for the Tech2Win software that rolls the firmware from 33.004 back to 30.004. At that point, after initialization, you set the vehicle as a 2006 Monte Carlo LTZ and you're able to access the VIN relearn function. Tried it and it worked like a charm!!
Ah that version must be before GM blocked this functionality with the dealers. Thanks for sharing.
Can you just call GM and have them unlock it or they can give a special code???
No, that code based system was called Theftlock from Delco Electronics and it's been long gone for awhile now. The last year a radio had codes was 2002. Ever since then the GM radios are dynamically coded with the VIN of the vehicle they originally are installed into.
Hello Dear can i to remove the eeprom to unlock te radio?
Yes, but with a loss of channel presets and on some models a persistent "CAL ERR" message at power up will result on the display from the loss of this device from the circuit board.
If I send you a radio can you unlock it?
Would it work if you just removed the microchip?
On an old model radio like the one in this video, that sort of hack of removing a component from the circuit board _usually_ can remove the VIN lock, with perhaps only the loss of the station presets feature. On some more modern / newer model radios though, that particular hack approach can cause the radio to become inoperative.
What software version is on the Tech 2? It is my understanding that it must be 30.004 or older to work.
I can only run the latest, older software doesn't work with newer vehicles that I often am working on in the shop. EEPROM swap is 10X faster than screwing around with Tech2 firmware downgrades. Note that I only use a physical Tech2, the Tech2Win subscription costs at www.acdelcotds.com are just not economic for frequent use.
@@DrShock Interesting; I'm trying to unlock a 2014 Chevy MyLink radio that I installed in my 2013 Impala. I found the "trick" on TH-cam on how to unlock it using a Tech2 or Tech2Win. The problem is trying to downgrade my PCMCIA card from 33.004 to 30.004. I found a bin file but apparently Tech2Win bin files are different than bin files for the actual Tech2 tool. Thankfully I was able to find my 2003 vintage HP laptop that has an old-school PCMCIA card reader that does the old voltages and I used Memory Card Explorer (MCE) to re-flash a legit Tech2 33.004 bin onto it. If I could only get a clean copy of a PCMCIA bin that was 30.004 or earlier. I've been to the MHH Auto website but its cosmic over there too.
I doubt a Tech2, would communicate with that 2014 vehicle, even with a CANDi module. The Tech2 would be way too slow over a modern 2014 CAN bus. The MDI tool took over around 2008 and is what GM would support for servicing a 2014. While Tech2Win would ride on the MDI hardware wise, it's still an obsolete tool for trying to communicate with a 2013+ BCM/Radio setup. The correct modern software setup for a 2014 would be Techline Connect and SPS2. But unfortunately Techline Connect usually blocks attempts to unlock an used module, especially one that didn't match the VIN/original factory build database. Hence why the EEPROM approach just skips all manner of drama/lost time around this problem.
Note that the firmware cards in a Tech2 are not PCMCIA type memory cards, they are a unique type of RAM chip hardware design using _linear flash memory_ chips. They have the same PCMCIA connector, but have to be written to with a dedicated utility in order for the Tech2 to reliably R/W them. I would suspect this is why the .bin images are different than for the Tech2Win emulator.
Oh, I know it will work as I have seen it done in front of me. With the older Tech2Win revision 30.004, you actually make it think my 2013 Impala is a 2006 Monte Carlo. Then it allows you to do a radio VIN relearn. It only takes one minute to do this without having to remove the radio. The impala “classic” uses the Tech 2 up to the 2016 (and final) model year of the 2006 W body style Impala. The 2014-2016 models were only sold to fleets for police/taxi or rental use. Installing a modern MyLink radio (UQ4) allows a easy way to get touchscreen functionality with Bluetooth streaming amongst other functions. Some people have even installed the nav versions.
Ah yeah, there's no trick there. GM issued a service bulletin back in 2008 or so specifically instructing dealers to plug in 2006 Monte Carlo LTZ for some vehicles where the VIN learn was lost during a calibration programming event.
It's been withdrawn by GM since, but used to be bulletin PIT4007D. It will not work on all GM radios. But given your vehicles still carrying that older design makes sense it would still work there.
do i need to use the 25xxx to 93xxx adapter or do i need just the 3.3 to 5v
you need both for a 93xxx device type. You only need the voltage change for a 95xxx device type.
@@DrShock how would i know if it a 93 or a 95 it is a Delphi radio from a 2008 corvette
If it's the same radio as I show in the video, it's neither as we go over that in the vid. All of the videos I've done on Delphi radios have had a 24XXX of some type. That 95XXX and 93XXX info in the linked vid are more for BCMs or IPCs.
@@DrShock so would you still need the 5v for the 24xxx
Yes, but I think you might be getting these two vids confused. The only reason for linking that CH341a programmer vid is it's a very entry level inexpensive one for folks who might just be doing this the one time to unlock a radio. You can actually use _any_ EEPROM programmer as long as it supports the 24XXX series devices to unlock the radio covered here (and the generation before it, and the generation after it). So, for example, if you had access to a TL866 II+ programmer, that is a fine choice as well. You do not have to use the one mentioned. Make sense?
is there any way to use the radio whitout bcm?
No, modern GM radio modules require communications bus handshaking with the BCM in order to function. It's been like this since around 2001 or so.
Can Tech2 scammer tool unlock a theft Lock on swap auto FM AM radio CD player on a 2007 Cadillac CTS ?
I haven't worked on a Caddy radio before, so no first hand experience but I would expect the Tech2 to handle those since it can do that for any 2007 Chevrolet or Pontiac radio. You might want to google around Cadillac forums for success stories first though.
Thanks dear for the great video
I tried that with my GMC Yukon 2007 but the option to relearn is not there
Could you help me by giving me a dump of your card software
Or if it is difficult just give me the version number and I will try to find the bin file to install on my tech2
Thanks in advance and sorry for bothering you with this long story dear
There is only one supported Tech2 firmware for North America since around 2013, and it's version 33.004.
@@DrShock
Thanks a lot dear you are really the best
I will try to find a working bin file online and I will try again
Thanks again dear master ❤️❤️❤️
I just erased the eeprom and it worked. Mine has a different motherboard. My radio is out of a 2007 Chevy Cobalt.
Is the only way it locks is if it’s been in a wreck?
No, it locks anytime it's moved (it detects a different VIN)
Those radio presets look familiar. Are you in Southwestern Ontario area. Also the Canadian tire light which I have 3 of, great lights.
just 000000 it out when installed in the car it will write original vin automatically
Couldnt you just remove the chip from the other radio and put it into the new one?
Sure, you could do that too. As long as both radios had the _exact_ same GM and Delphi part numbers.
@@DrShock what is DELPHI numbers
@@wirynet Delco Electronics became Delphi when GM spun those divisions off. Delphi would, probably still do, buy a large order of blank EEPROM chips from a given supplier and have the supplier put their own number on the silkscreen instead of the suppliers more widely known part number. If you buy enough chips, you can get whatever you want printed on there ;-)
What if I pull the chip .?
It sounds very complicated.. easy to pull the chip . 2014 camar with panasonic radio. What you think..
Thanks for your help
@@wirynet GM is a kinda cheap, nothing is installed that isn't absolutely required ;-) There's more than the VIN stored in the chip, probably the radio presets at a minimum. Idk what else. But yes, just desoldering the power pin would also unlock the radio, with a loss of whatever minor functionality that would go with that. But trying to physically pull the chip physically off the board - you're more likely to cause collateral damage to the circuit board. If you don't have the right tools and experience to desolder the chip, then just cut the power pin rather than risk causing irreparable damage.
Also, this video isn't applicable to 2014 radio designs, more likely this one is - th-cam.com/video/iBXLnHlbnDo/w-d-xo.html
OK. I got everything hooked up and finally learned how to read the chip under "operate" and comes up as a blank chip. Wow! so either I completely erased it by accident or where I bought the radio from erased everything. I guess my only next solution is to unsolder the chip from the old radio and swap to the replacement , or copy the eprom data from the old radio and copy the file to the replacement radio. OR just give up - which is not part of my DNA
Thanks for your help to date
JK
When you read all zeros, this is usually a problem with some circuit boards trying to read in-circuit because the test clip is powering on other chips at the same time inadvertently. I would try desoldering the chip and reading it off-board instead. That way you can be sure you have a good programmer setup and can make a backup copy of the chip contents.
@@DrShock Well,, at least I learned a lot . If I could paste a screen shot of my laptop here I would. The software wanted me to select the eprom chip which I did find a Microchip MIC24C08B and I also tried a generic 24C08, both with the same results. When I get time I'll unsolder the chip and try it again. Looks like only three of the pins are actually connected to the motherboard.
Dear which tool we match this checksum & script modify
What is the chip number for chevy colbalt car stero 07 08 g5. PLEASE
It's in the video, for this particular radio. Also some info in the description.
萨博93的CD跟这个一样，我不知道是否能通用？
有一些 GM 收音机在面板上看起来很相似，但内部电路板不同。我建议先尝试 Tech2 VIN 重新学习。 EEPROM 方法类似，但与此处所示的电路板不同
@@DrShock 电路板不同就可能用不了，我发现汽车的CD、大屏就像电脑一样，硬件+软件，看是否通过刷系统来实现匹配？这只是我的个人猜想
较新的通用汽车收音机将通过闪光灯重新校准来完成。但是这些老款，就是Tech2的VIN relearn特殊功能。或者，手动编辑 EEPROM 内容。
I just replaced my stereo and it shows locked. I am clueless to all of this. Help please.
Depends on the year for how to unlock it, if you're commenting on this video we go over how to unlock it for 2007 thru 2010 only. Other videos cover other year ranges as GM made design changes along the way. Basically from 2003 and up GM programmed the vehicle VIN into the radio so it will only work with that particular vehicle. To use the radio in a different vehicle than originally manufactured, you have to re-write the VIN in the radio. This can only be done with a GM scan tool doing a VIN relearn function, or by editing the chip on the board directly, or by physically swapping the chip between radio circuit boards. Since 2012 GM has blocked the VIN relearn function, so we're only left with directly programming the chip or replacing it on the board.