T42 4L80 file

[derkscustomcars]

Hello,

Does anyone have a T42 4L80 file compatible with the following OS

12590425, 24252956 or 24239927?

Thanks

[ScarabEpic22]

The first is an ECM OS, all T42 OS' I've seen start with 2. I have 24239927 from an 08 Express Van, I've attached the ECM and TCM files here. I have an 09 Express Van tune that has 12630501 for ECM and 24243356 for TCM, but not in EFILive format. There's an 07 T42 4L80E file around here on the forum somewhere, don't know what the OS # is for it though.

[derkscustomcars]

thanks!!!

[joecar]

Thanks Erik.

[derkscustomcars]

I'll post what I have as well. I also have a t42 from a cobalt.

[derkscustomcars]

23210

[derkscustomcars]

There is no way to force an OS in any of them? Has it been tried?

[ScarabEpic22]

I don't believe there's a way to bypass the OS check and flash a non-matching OS into a T42. I haven't tried it in a long time (2-3 years now) though.