They won't let you touch the cheap $45 scanner either it's like it's a closely guarded secret

 

Almost feels like it's coming from beyond motor though. Maybe torque converter?

 

Not a real common failure.....

 

Would anything in the trans cause this? Truck has always had a small whine noise coming from somewhere but hasn't had any other symptoms till now. Almost feels like a slip but have read that's not really what a trans slip is

 

Have you check u-joints? A dry one might produce that kind of feeling.....