I am new to this forum and hoping someone will have some helpful tuner information. I have a 2013 Tahoe that experienced an AFM failure resulting in sever engine damage. To correct this I swapped in a complete 6.0 from a 2013 Silverado 2500, this got me the better engine while at the same time getting rid of the AFM system. Because the LS engines are very similar I though I was doing a pretty straight forward swap. I have put about 5000 miles on this new combination including towing. The truck runs but its definitely not optimal and has room for improvement. Tuning the engine computer has proved to be more difficult than I was expecting. I have had 2 different tuner companies attempt to program the computer with HP tuner software, but they cant seem to find 6.0 tunes in the file library, which seems odd as I believe this to be a pretty commonly swapped engine. So they have been trying to build custom tunes which have varying results. Currently it runs pretty well and is a daily driver, but below 2500rpm it acts like its breathing thru a straw and is slow to build RPM.
Does any one have experience or ideas related to this type of swap or any information that would be helpful to pass on to my HP tuner guy?

 

I don't have an answer for you, but you will probably have better luck in the tuning section of the forum. PCM Diagnostics & Tuning - LS1TECH - Camaro and Firebird Forum Discussion

 

If your tuner(s) are telling you they "can't find a file", you need to get the hell away from them as fast as possible.

 

I just looked in the hptuners tune repository and there is a 2009 and a 2010 silverado 2500 tunes. There is also 2011, 2012 and 2013 gmc sierra 2500 tunes. Just copy the tunes over to yours.

 

"So they have been trying to build custom tunes" = $$$$$$$.