Who told you this lol? Some people need to check their facts.
But yes, the only time the condenser fan should be running is if the ac is on, so basically whenever you have the ac or defroster selected on the hvac controls. Also, on the newer trucks, below a certain ambient temperature the ac compressor will not run to prevent freezing components. Not sure if the 02 trucks do this though.
Stand in front of the truck while it's running and watch the ac compressor clutch. Have someone turn the ac on and off. You should see the clutch engaging and disengaging. If your ac compressor is not engaging when ac is selected, then power is not making it to the compressor clutch for some reason. Could be the controls, a fuse/relay, pressure switch etc. Or the ambient temp is too low. If your compressor IS engaging however, then the fan should run with it. If the compressor engages and the fan doesn't run, then there is an issue somewhere either in the fan circuit or the fan itself is bad.
