I have a Garmin Nuvi and after updating the maps, it no longer recognizes the states of New York or N Carolina . I tried reinstalling them and still nothing
It's possible that a different region was installed to the device. Try to change the region using Garmin Express and choose a region that includes the states you require: Reinstall or change map coverage using Garmin Express
I wonder if the OP is talking about address search or setting the search area to those states? What does the map show if you pan to one of those two states, then zoom in?