My 1997 camero is overheating, the oil temp is higher than normal and the heater quit working.

Is the heater not getting hot? Or does it not blow at all?

If your fan comes on but the air doesnt get hot, and your car is over heating I'de say you've got one of three problems, you've got a collapsed or plugged hose in the cooling system, you've got too much air in the cooling system, or you've got no coolant at all..

Check the coolant level, and do a coolant system flush..