Both those lights came off after I got my Sulfur TSB done. Apparently it was a faulty sensor that they had to repair.
If you've locked the Center Differential there should be a little yellow dash light that looks like 4 wheels with an X in the middle and the VSC OFF light will be illuminated. VSC TRAC shouldn't be on at the same time.
I'm referring to a 4th Gen, not sure what you're driving...