Need a tune file for O/S 01270003 with a 4L80E

[thunder550]

Need to copy over the tranny segment from a 4L80E tune, operating system 01270003.

Can someone help me out? :)

[ringram]

Have you looked at www.holdencrazy.com for compatible stuff?

[thunder550]

They don't have my OS :frown:

[thunder550]

What are my options if I can't find the correct operating system to copy the 4L80E tranny segment from?

[ringram]

Hmmm. Not sure, probably a question for the trans guys. Have you compared the tables? Maybe trans talks to pcm using the same tables, its just built stronger. I think you will need to look into it that way.
In which case perhaps it will work with stock 4L60e stuff. But I have no idea.

[thunder550]

I'm an idiot - I just realized that the O/S i gave is an EFILive custom OS number. My stock OS was 12208322, I think I already have a tune with that OS with the 4L80E. I should be able to copy the tranny segments from that into my custom OS right?

[hrodgmc]

I know solenoid firing order is different. Wish I knew more.

[thunder550]

Hmmm ok well I'll give it a try I guess and see what happens. Thanks for the PM BTW :)

[joecar]

Yes, the solenoids fire in a different order.

Which OS are you copying from, could I see...?

[thunder550]

OK I got it all worked out. Copied the tranny segment from a 4L80E tuen from my original OS, 12208322. PM me your email address and I'll send you my file.

[joecar]

Thanks.

[1SlowHoe]

Anybody have the same type file for me? I am running OS 12216125 and I need the 80E segments. Nothing in the tune bin:frown: