If you end up buying it , get your hands on a book / manual that includes wiring diagrams / schematics . Trace down the circuit associated with the lites that do not function .
Yes could be a fuse or a faulty switch . We have 2006 - 2015 GM cars that have a light sensor in the center of the dash that dims the dash lites . Might be something to do with that . A wiring diagram will tell .
Best of luck to you ,
Wyr
God bless