So... dumb mistake... I read the tune file off of my brothers new 2004 Silverado SS, but forgot to save it as stock before doing all the changes, saving it, and flashing it on... LOL So... now I'd like to find a stock LQ9/4L65e SSS tune with OS#12587603 and Cal#12587672

And yes, I already checked tunefiledepot.com, no luck.

 

There is one on tunefiledepot under GMC for a 2004 Yukon with a 6.0. I think that might be everything you need. I didnt open it up as I am on my cell phone. If not let us know and I will do some more digging.

 

I have a 04 SS tun but the OS is 12585950

 

I just downloaded that tune and it is for a 4l80e. You could just download that tune and do an engine segment swap to a tune for the truck you are working on.

 

Try this. I did the 6.0 segment swap over the 2004 with a 4L60e. Hope this helps.

 

I have one same OS but not cal its from an AWD ill have to bench flash and read it out in a .tun file lmk before i go through all that or if you have someone with tunercats i posted it here


http://www.gearhead-efi.com/Fuel-Inj...7104#post27104