Have you checked the owners manual for correct procedures?The light flashing may mean it has not come out of 4wd. Put the vehicle in neutral and put in 4wd low move forward in drive then in reverse do this acouple times then return to neutral and put it in 4wd high repeat forward, reverse return to neutral and put in 2wd and repeat forward, reverse. Try these steps a couple of times and if you have no luck contact the service department at your dealership.

