PCM compatibility question
Ok, on my 2003 Silverado 5.3L, it has PCM service #12582605
Last friday i installed soem 05+ OEM efans and the bigger radiator, and tried to reflash the PCm with a stock 2005 5.3 cal file, but got an error message that said the cal file i was trying to flash with was from a different pcm service number, it was from pcm 12589463 and my original cal was from 12582605 and that the new file may not be compatible with my pcm, which it wasnt, it tried to reflash it 3 times with no luck.
So i wanted to see if there was any other PCM numbers besides the one the cal file cam from that will work, i have a complete harness nd computer from a 2004 blazer with a 4.3/4L60E that is service #12586243, and it it is compatible than i could swap it in then do the reflash.
Im looking to get the efans working with the PCM and not just with the a/c running, so far it has been staying cool just fine, but id like to atleast have it running with a stock 2005 program atleast til i can get the cash to have nelson tune it for me.
