I have a 2004 GTO with the P59 computer. It currently has a 2 BAR OS. If I want to change to a 3 BAR OS, would I have to first Write Entire the stock OS file, then Write Entire the 3 BAR OS file?
Or would I simply take my stock OS file, apply the 3 BAR OS modification, save the file with a new name and Write Entire from 2 BAR OS to 3 BAR OS?
I always flash back to stock. I don't think you can flash a upgraded OS over an upgraded OS.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
Ok, so I went back to stock and then flashed the new custom OS. This time I had to turn off VATS to keep the car running. Did I do something wrong?
No, that can happen.
If you did a security relearn the VATS disable may not have been required. I tend to disable it a lot of older cars because I don't trust the keys.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
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