TRNW-2: 6L80 factory tunes

Brett Karulak brettsb16a2 at gmail.com
Wed Sep 24 05:57:31 PDT 2025


I have a 2011 4x4 1500 5.3 Truck.  The customer had a junk yard tahoe unit
put in it a while back. I have pulled and will be rebuilding the junk yard
unit as the other was a core sent back to the junk yard. When it comes to
differences in the tunes, are they very similar or very different assuming
engines are the same.  In other words, do I need to have the tehcm
programmed to match the vin?  I have used my HP tuner 3 times now on 6ls,
does someone want to share their file for this truck instead of programming
it to the vin.  I know I don't have a file saved for this year's model and
4x4 yet.  I reuse all techms on OHs except the bad certain ones from 2017
and then see how the truck operates after overhaul before I replace it.

Thank you,
Brett Karulak
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