I have been excessively busy at work, but i did get a few minutes to look at the new xdf. And it seems to have fixed the info shift issue!

Downloaded but will probably be tomorrow before i can get back to ya. All this is very appreciated.

See good other than shifted down a row. Just something that has to be checked but the xdf is really good i think

well it works pretty good. There are a few quirks to it, like sometimes the rows are shifted down one or the columns are shifted right, and some calculations are wayoff. But nothing i couldn't fix...

I will let you know as soon as i get a chance to Dink around with it. I work an oddball shift so sometimes im asleep by 1800 hours. But being up at 0300 lets me play around without being bothered...

Ok so. Had a break at work and had a few minutes to play on tunerpro.
The xdf you posted worked great on the 7811 bins as expected since that is what it was for.

The 5114 that the Tahoe...

Well i got up early and scanned the Tahoe.
I put a file in the 2006 section, but ill put it here too, to go along with the original post/question.

Vehicle is a 2006 Tahoe Z71 5.3 virtual flex...

Same tahoe with GM dealership TSB updated OS for better ethanol content sensitivity and some sort of rear O2 sensor update

Yeah, give me a couple days to get it scanned and uploaded. I havent even pulled it off the ecm since the dealer flashed it. 2006 tahoe flex fuel 5.3 is what it is.
House foundation repair on top...

2000 Silverado 5.3 auto
Tuned for long tube headers and true duals minus cats
Firm shifts removed some TM
Got from Junkyard rolled truck tuned by BBP on with and one without vats

Havent had the time to mess with it yet, had a heavy rain Saturday and basement started leaking. Spent yesterday digging along the foundation to find and patch the crack. Will update when i can....

I will do that thank you.
Yeah i was aware of the 03-05 pedal/TAC module issue and planned on doing a pre06 pedal and tac swap since i couldnt find a xdf for mine or anything other than the 7603...

I thank you very much. I try to do as much looking online as possible before i ask questions and i was able to find many answers except this one. Again thank you!

I have the OS progression for 2006 from an old post

from what I can tell was one of the early 2006 software versions (12587811 > 12605114> 12606807 > 12613246). And then after that an update came...

It was originally 12605114 but pretty sure when i took it into the dealer last year they updated the OS for a recall. Now it is supposed to be 12619623. I havent redownloaded the ecm since but i do...

So i am planning on tuning my 06 tahoe and to do that with tunerpro i must revert to the 7603 OS.
Well... the problem is the flex fuel vehicles kept the return style vacuum referenced injector maps...

No i dont have one for 7811. Would be nice though, to see the difference between an LM7 tune and an L33 tune. Would love to enable flex on my L33 truck and swap in flex injectors with the current...

Well it seems to be shifting like it should have been all along. The odd part is, it shifts almost identical to my 06 tahoe now... which is stone stock minus an airaid intake pipe.
Now why would two...

Well it starts runs and drives on the last file you posted. And it seems to shift a bit better. It usually takes a few drive cycles to even out so i will update in a day or so. Thank you again.

Bloody hell, you are right. I wonder what the hell i flashed to the ecm then... ill reflash on lunch break since i happen to have my bench setup with me. Working between 70 and 8 hours a week gets...

I have flashed it to the spare ecm and it went well, but i have not gotten to put it into the truck as of yet. I work an odd schedule and my daughter drives it to work, and i leave for work before...

Ok, ill try again in a few hours have a few errands to run and hopefully i can do it before work. Thank you again for your help and patience.

Ok update, so if i just clone the ecm it starts and runs fine. But the shift mod tune it does not start.

Well, i copied the original ecm. Recalibrated it with the trans modded file and the vats wont let it start. So, ill start over by just copying the original again and see if it starts that way. Then...

Ok. I bench flashed the ecm and it took. Reread it and its good, just have to get time to swap out the computers and i can give a final answer. Thanks for your patience.