overheating

Have you checked for a blown head gasket?

This is the million dollar question,,,, got the same problem in my old cutlass... what I DO know is --IF you turn on the ac do the fans come on? if not look for cooling fan fuses and relays --check fuses --swap relays with other ones (fuses and relays are in box on top of engine. good luck... car also has a temp sensor usually near thermostat.