1997 cadillac sts overheating?

okay i got a 1997 cadillac sts and i was driving it and it just started to overheat i change the simples like radiator, thermostat. now all that would be left would be the head gasket or the water pump but i dont know what one, its not leaking coolant so does that mean its the water pump? and if so how hard is it to fix it? and right now its stuck a hour away from where i live so if its the water pump would i be able to drive it back home seeings how its winter time as long as the winds hitting it?1997 cadillac sts overheating?check fan and temp switch for fan and relay for fan fuse and relay in fuse box under hood