You do not list and symptoms or what you have investigated so here’s a shot in the dark suggestion. Our thermostats (2) blew their internal fuses when I connected my battery in reverse. Not saying that’s your problem but it’s something to check.
2013 F-350 CC SB 2WD 6.7PS
2013 Eagle Premier 351 RLTS
-SOLD- 2012 X23B
-SOLD- 2003 Ford Expedition 5.4, Bilstein shocks