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Potential Tuner
2001 os 12208322 to 2002 os 12212156 not working
Got a 2001 Silverado pcm with a 12208322 os (6.0 4l60E tune)and did a write entire to install 2002 Silverado 12212156 os (6.0 4l80E tune)and engine will not start. I am assuming that this computer can't run this os!?!?!? Any help would be appreciated, Thanks
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Senior Tuner
Computer can run it just fine. Disable or learn the VATS.
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Potential Tuner
Was hoping it was that simple, and you were correct VATS was still on. THANKS!!!!
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Potential Tuner
I see this is an old thread, but anyway I can get a copy of 12212156 stock tune. The tune repository is down and this is same OS I need for a segment swap.