This where I would start and if it is stuck (or even if it is not ) check the fuse. After that would be (of course after checking to see that the system is full) would be the radiator cap. Even if it isn't bad, if you don't know when you replaced it last, it's a good thing to do and should be done every couple of years just like changing the coolant.

So as it does sound like either the radiator moved a little bit and jammed or something got stuck in there and it then blew the fuse.

Still it would be a good time to flush and fill the cooling system if you haven't done it for a while.....

 

nekkid and daytona, are right with thermo and fan, if its not that then start with checking conections, wires, rad cap, fan temp switch, air in system as per the manual... many more info ?