4l80e swap os 12585950 HELP!!!!

[smithgarett1992]

Is there anyone that can help me out!! I did the the 4l80 swap but i cant seem to find a os 12585950 so i can get the basic numbers for the 80 swap!!!
ANYONE????

[ScarabEpic22]

Ok that's an 04 P59 OS, go into the tune repo and download a 6L file for a 2004 Silverado. I did and it has OS 12585950 with an 80E.

[smithgarett1992]

what exactly would i search? I have search 2000 -2005 6.0 files and couldnt find a os number to match!

[smithgarett1992]

Never mind i found it thanks! Just curious how did you know the year and model of the ecm?

[5FDP]

If you do stuff enough it's kind of a memory.

And the segment swap only works with the same OS and the same OS is going to come from the same year. So that means you never have to search any other year like 2000, 2002, 2005 etc etc. Every year has a different OS. If the computer is a 2004, only search 2004 files.

[ScarabEpic22]

If you do stuff enough it's kind of a memory.

And the segment swap only works with the same OS and the same OS is going to come from the same year. So that means you never have to search any other year like 2000, 2002, 2005 etc etc. Every year has a different OS. If the computer is a 2004, only search 2004 files.

Yep good advice, there are some rare exceptions where years cross over, but it's definitely oddball edge cases. Keep it simple and only look at your vehicle's year, going for an 80E swap I always start with Silverados as GM made tons of them with the 6L+4L80E combo from ~00-07.