this is a 2014 ford f150 xlt 5.0 l 4x2 . trac advance light on only. im not sure but i think it might be something to do with abs control module unit. prior to my cruise control stop working. i replaced purge valve , left front abs and hub asembly, and brake switch. nothing resolved?

 

Sometimes you can perform what is called a forced reset.
Just remove the negative battery cable from the battery and go have a cup or two of coffee, (or what ever you like lol) and then reinstall the cable terminal back on the battery post .
.Let us know if this made the light go out. It will not correct the initial problem, but we can go from there.