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I am having issues with a truck I just purchased.
The truck is a 2016 2500 mega cab.
All I know about the truck is that it is completely deleted and had an MM3 in it before I purchased it.
The dealer I purchased it from said he had a 75hp single tune on it.
THE TRANSMISSION SHIFTS GREAT when I usually drive normally and has no issues.
If I get on it a little too hard, it will throw the CEL and hit the 1-4 safe mode.
It will also do this if I have to slow down and start again before it downshifts.
I am at a loss.
I am unsure if it has to do with the tune and pressures or if my tranny is going out.
Has anyone ever had this happen before?
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