Your fan is controlled by a temperature sensor that could be found on the engine or radiator itself. My guess is that there is a sensor on the head or intake that controls the fan. You have ascertained by the air conditioning that the fan is okay.
You did not mention the year of camaro either which is a dianosis problem, because in later models the computer controls the fan which it determines from temperature.
SOUTHEASTERN GOODGUYS REP
[This message has been edited by HOTRODSRJ (edited 11-24-2001).]