I have 93 Silverado swapping 04 avalanche 5.3 w/ 4l60e 2wd. The pcm OS 12587603 , calibration 12587673, hardware id 12583660, broad cast yfxm. I’m using tuner pro rt to delete vats but when I trying to save the bin it pops an error for one or more checksums could not be updated.
It’s my first ls swap and I have no clue where to start to fix the checksum error’s.