downloading stock tune help!!!

[weettiddo007]

OK i just bought efi and ive posted this problem on dieselplace.com but i figured id put it on here too and see if i get any more ideas. I am trying to download my stock tune and encountering bootloader errors. I had a six gun on my truck but physically removed all remnants of it so thast shouldnt be the problem. Ive unhooked both batteries for and hour. Ive unplugged my radio fuse and onstar fuse. Ive pulled the pcm fuse for a while to try and reset it. i have absolutely no aftermarket electronics installed. i have also driven the truck for 30 minutes to charge the battery up and am reading almost 14 volts with the key on but the engine not running. all of my lights and ac are off. i turn the truck to the on position plug in the obdII plug in the usb start efi tuning tool click the blakc and green button to d/l tune. I continually get this message

ecm not secured
initializing ecm
"" step 1 of 4
setep 2 of 4
step 3 of 4
step 4 of 4
ecm lock has been rearmed attempting to unlock ecm again

initializin bootloader
error failed, controller has returned to normal operation
initialinz bootloader step 1 of 3
error
disconecting
disconected
done!

i have looked at the button to see if the ecm is locked and it tells me it isnt.

Im terribly confused.

[GMPX]

What engine / year is the truck?
My first response would be to ensure you have the correct ECM type selected in the drop down list before you go to read the truck.

Cheers,
Ross

[weettiddo007]

2004 lb7 8th digit of vin is a 1 thats what i have selected on the drop down menu

[GMPX]

ok, I think the only hope we have to see what is going on is if you can locate a couple of files on your laptop there to send to us -
Open Windows Explorer and go to the folder -

\My Documents\EFILive\V7.5\Bug reports

Or if you are using Version 7 (not 7.5)

\My Documents\EFILive\V7\Bug reports

In there will be various files with the extension .blx
Can you please send them to support@efilive.com

Thanks,
Ross

[weettiddo007]

e-mail sent

[weettiddo007]

no luck yet?

[GMPX]

No Email in my inbox yet! I'll PM you my direct Email address.

Cheers,
Ross

[weettiddo007]

email sent

[GMPX]

Yep, got it all thanks.
Just want to keep this public because it's a little odd.
Hoping maybe some other Diesel guys might have seen this issue because it has me a little stumped.

The issue with this truck is as the read initializes.
EFILive queries the ECM to the it's lock status.
ECM reports back it is already unlocked.
EFILive starts to send the read bootloader to the ECM
ECM rejects this request saying it is locked

weettiddo007 said the truck has only had dealer updates (if any have ever been done).

Have any of you regular Duramax tuners ever seen this?
I'm leaning toward TechII ECM corruption (has been seen before but normally on 2001's).

Cheers,
Ross

[weettiddo007]

Just to clarify, not sure if it matters, when the gauge cluster was changed it was done at a local mechanic, not the dealer.