Boot Pin Location

[Road]

Anyone know or willing to share where the boot pin is located on the 15+ E86b ecm is so it can be read out with Ktag? I have contacted my Alientech rep and he don't seem to know either. Thanks

[DURAtotheMAX]

As far as I know, Ktag doesnt support the E86b (slightly different/newer TC1797 processor)

[Road]

As far as I know, Ktag doesnt support the E86b (slightly different/newer TC1797 processor)
Alientech said they are working on the seed and they will have it supported. How are the 86b stock file being imported?

[Snipesy]

Debatebly legal means...

But I think it's a moot arguement. What's the difference between jtaging out some memory versus just taking it directly from GM? It's kind of like copying a CD versus filming it with a camera.

[GMPX]

As you all know we have the Alientech import option for the E86A (the three memory chunks), not sure why the E86B isn't supported by them but when it is we will be able to do the import of those as well.

[Road]

As you all know we have the Alientech import option for the E86A (the three memory chunks), not sure why the E86B isn't supported by them but when it is we will be able to do the import of those as well.
Care to elaborate how the stock files are created and imported currently?

[GMPX]

It is an option in V8 under F8:Tools.
Just point to the three files Alientech reads (MPC, FLS and EPR) load them in and done, you can save it as a .ctz then. Of course make sure the three files are from the same ECM!

[Road]

It is an option in V8 under F8:Tools.
Just point to the three files Alientech reads (MPC, FLS and EPR) load them in and done, you can save it as a .ctz then. Of course make sure the three files are from the same ECM!
Yes I have been using that feature for the 86A but Ktag doesn't support 86B. I would like to know how the 86B file (MPC, FLS and EPR) are being acquired being Ktag don't support it?

[Snipesy]

Yes I have been using that feature for the 86A but Ktag doesn't support 86B. I would like to know how the 86B file (MPC, FLS and EPR) are being acquired being Ktag don't support it?

People get cache files I am guessing from the GM flashing software. Probably in %appdata% somewhere under the name of the tool. Maybe %temp% or the program directory. Not sure how it works, I dont own any of their overpriced junk. They're not encrypted (this will probably change at some point, but who knows).

[Road]

People get cache files I am guessing from the GM flashing software. Probably in %appdata% somewhere under the name of the tool. Maybe %temp% or the program directory. Not sure how it works, I dont own any of their overpriced junk. They're not encrypted (this will probably change at some point, but who knows).
How ever it is done it is not being shared. There is probably a good reason for not sharing too....

[Snipesy]

How ever it is done it is not being shared. There is probably a good reason for not sharing too....

You should be able to figure it out with that. I know it can be done... If you decide to do it.

The problem is if people share everything is A. It can open up legal troubles. and B. It can turn the industry into a bunch of wolves fighting over a piece of meat. How would you feel if I could just use a tool to convert your tunes into a .bin? You made this? I made this.

[Road]

You should be able to figure it out with that. I know it can be done... If you decide to do it.

The problem is if people share everything is A. It can open up legal troubles. and B. It can turn the industry into a bunch of wolves fighting over a piece of meat. How would you feel if I could just use a tool to convert your tunes into a .bin? You made this? I made this.
I would just like to know the way to aquire base files. Obviously it's not done with Ktag.

[Snipesy]

I would just like to know the way to aquire base files. Obviously it's not done with Ktag.

I'm not sure what you're implying. It sounds pretty easy to do if you have a GM subscription and an MDI. Just need to find where the files are cached (shouldn't take too long) and follow my guide here https://forum.efilive.com/showthread.php?27234-Making-a-bin. I'm not gonna sit here and really question if its legal or not, up to lawyers on that one.

Otherwise... Only other method is to use a separate tool to snoop on network traffic. Intercept the flash as its being transmitted and record it on a computer. Haven't tried that but that would be pretty cool (and allow stealing tunes, which isn't cool).

[Road]

My guys over at Alientech have it covered now.:good:

[GMPX]

My guys over at Alientech have it covered now.:good:
That will make some people happy and annoy others :lookaround:

[DURAtotheMAX]

and annoy others :lookaround:

:rotflmao:

[Road]

As you all know we have the Alientech import option for the E86A (the three memory chunks), not sure why the E86B isn't supported by them but when it is we will be able to do the import of those as well.
Is this still going to be added in?

[GMPX]

I don't know, nobody has submitted an Alientech read from an E86B. It won't be added as a priority though if we do get the files.

[Road]

I don't know, nobody has submitted an Alientech read from an E86B. It won't be added as a priority though if we do get the files.
Ok I will send some reads to support.

[GMPX]

No worries, but there is LOTS going on right now so like I said it won't be looked at as a priority sorry.

[hatemi]

Hi. My first post here and I'm searchin for help with problematic 2012 model LGH Express van.

The deal is this. I did not find 100% same file from databases so I did not dare to write random file with few different parts with Flashscan without boot mode back up.
I removed ECM from the van and read it with Ktag. Reinstalled the ECM to the van and it would not start. For some reason it had lost the serial number and BCC fields and new Serial was just 1.
I removed the ECM again and read the ECM again. MPC and Flash were identical but Eeprom had some blank areas compared to the original read.
I then wrote it again and same result. Flashscan identifies TCM and ECM just fine but car wont start and the serial has changed to 1 again.
Then I noticed this thread and used Flashscan to write the original Ktag read files to the ECM and Viola! After that the serial was not 1 but at least full length code but after first ignition on cycle the freaking was again 1 and no start.
Van occasionally cranks for half a turn but usually the key just does nothing. Instruments light up some times and some times they dont seem to do anything. The glow plug and check engine light light up but are very dimm when the ignition is on.

Is there any procedure I should use or is the ECM or some other module in the van now dead? I can read, wrtie and ID the ECM just fine but for some rason it erases the Eeprom file.

[hatemi]

I gave up for tonight and left the van with batteries disconnected. I will try to measure all fuses and relays tomorrow. If I measured correctly the lift pump fuse did not have any power to it (no pump sound either) so at least part of the problem might be just blown fuse or some other 0.1$ fault. Hopefully.

Apparently I could have just written the calibration file with Flsashscan even tough System and Engine diagnostics had one number difference on both files between what is in the ECM and what was in the database file. I just didnt dare to try without full backup and now I'm left with a Van that does not run, In a town 300km from home and 400km from nearest proper Chevy dealership. Live and learn I suppose.

[modpcm]

Provide your VIN

[GMPX]

I removed the ECM again and read the ECM again. MPC and Flash were identical but Eeprom had some blank areas compared to the original read.

FYI, EFILive never writes to the EEPROM area (actually, it can't be done via OBD-II, only via JTAG).
I think your only option is to try to get the KTAG to write back exactly what it read out to the EEPROM area.

[hatemi]

Hi. The VIN is 1GCWGFCL3C1202604.

I allready tried writing the original EEprom with Ktag but after the ECM was used in the van the same area of the eeprom was blank. I re read it after write but before it was connected to the ECM harness and the data was not changed at that point yet. Just after it was connected and ignition turned on it got funky.

[hatemi]

I measured the fuses and part of the relays. For some reason Fuel pump relay has 12v but the fuse does not have 12v on either sides of it. Does anyone know where the power to the fuelp pump fuse should come from? It was nr 24.

[hatemi]

I re read the ECM again. MPC and FLS are the same but EPR is missing first part again. What the heck can erase the data when the ECM is connected to the rest of the van?

[GMPX]

That I don't know, but I remember on the LMM Bosch supplied ECM they used to self erase that part of the memory, GM even released an update for it. I know that isn't your issue here.

[Road]

I re read the ECM again. MPC and FLS are the same but EPR is missing first part again. What the heck can erase the data when the ECM is connected to the rest of the van?

That would be a question you should ask Alientech. They may be able to fix the file for you.

[modpcm]

Hi. The VIN is 1GCWGFCL3C1202604.



PM me if you still need help

[hatemi]

Email sent :)

We did not solve this problem yet. Alientech tells that the car erases the eeprom area when the ignition is turned on and they cant do anything to help in that matter. I had to leave the Van sitting at the garage for few days. I hope I can get back there in few days to continue working on it again.

[hatemi]

Van has been at the dealers for few days now. Their diagnose is that the ECM is toast and needs replacing. Do you know If I can just source ECM for Express van and get it working with that? How critical is to use a unit with exact same version (SW and HW numbers) or are they generally exchangeable? At least same genereation (EDC17) ECMs on Euro cars need the exact same numbers and even then it might not be possible to code used ECM to the vehicle.
One problem I have is that the original Ktag read was somehow corrupted so I cant make full recovery using Ktag to new ECM. Is it possible to use dealer tool to pair a used ecm to the vehicle?

If anyone has a 100% working solution or used ECM let me know.

[Road]

Ben might have a used drop in ecm for you. Might try him. https://www.facebook.com/BTDWorks/?ref=br_rs

[GMPX]

Their diagnose is that the ECM is toast and needs replacing.
Well that is annoying but at least they aren't too expensive. I am sure plenty of people use Alientech on those ECM's without this issue so hopefully it was just a once off or it might be something odd with the Van programs.