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View Full Version : 09373372 OS need 4l80e Segment swap


99taman
September 28th, 2015, 03:38 PM
I am looking for the segment swap for a 4l80e . Also any help on doing this would be appreciated.
Thanks
joecar
September 29th, 2015, 01:52 PM
Might be hard to find that OS running a 4L80E...
joecar
September 29th, 2015, 01:54 PM
If you can flash in 12212156 then those would be easier to find.
99taman
September 30th, 2015, 02:21 AM
is the 09737372 not an 2001 operating system? should I not be able to find a 4l80 truck running that system? What is better about the 122121565?
joecar
September 30th, 2015, 04:23 AM
09737372: I can't find any with 4L80E
12212156: I found a few with 4L80E

it's not a matter of "better".
99taman
September 30th, 2015, 04:50 AM
how do I switch over to that os?
joecar
October 1st, 2015, 04:39 AM
You do a full flash of the new OS file, but first you also have to manually bring over any tables that are different from your old file.

Then you double check all the tables (look at new and old files side-by-side).

Then after you full flash the new file, make sure vehicle runs at least as good as on old file.