2002 Ford Explorer characteristic?

Hello everyone I am new to the boards. I don't know much about cars but I am curious with the one I have now. It is a 2002 Ford Explorer XLS automatic transmission. My problem is if the car sits over night or for a short/long period of time when I first shift from Park to Drive there is a screech noise coming from the engine. I had it into ford on friday and they told me that this is a Characteristic of a Ford Explorer. I was wondering if anybody knew if this was true and if anybody owns the same model if they are experiencing this. Thanks for your help.

I drive a lot of explorers at work and I have never noticed that problem.

i also handle alot of explorers every week and i've never come aross a problem like that, the only wierd characteristic i know of with explorers and expeditions (more common in expeditions) is that the brakes have a tendancy to freeze up after using the emergency brakes.