Need a Stock Tune for OS 15196784

hheppner

New member
Aug 30, 2018
3
0
0
Montana
Does anyone have a stock tune or hot tune for a 2005 LLY with OPERATING SYSTEM VERSION = 15196784 and TRANSMISSION VERSION = 15196778? My truck is a manual trans. Also, I am looking to disable EGR as well.
 
Last edited:

hheppner

New member
Aug 30, 2018
3
0
0
Montana
No, I thought you needed the same OS the ECM has. If I could or can, how would one upgrade the OS on the ECM? Is it just by whatever tune file you have or what?
 

DAVe3283

Heavy & Slow
Sep 3, 2009
3,482
72
48
Boise, ID, USA
You can changes OS by full flashing the ECU or TCM with a tune with a different OS. EFILive really makes it easy for us in that regard.

Just be sure to read and heed the warnings about the full flash. A cal flash is almost impossible to brick an ECU, but a full flash gone wrong can.

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