GM OnStar Question
Posted: Wed Mar 23, 2011 7:43 pm
I have a question i have OnStar active in my 2009 corvette. One of the features is engine Diagnostics. I am wondering if GM can tell by doing a diagnostic of my engine that it has been tuned? I know the diablo predator tune has been discussed and we have been told that the dealer can not tell if you reinstall the stock tune. So is it possible that the GM diagnostic OnStar log pick up anything out of the ordinary if you use the predator?