What is the normal operating temperature for a 2003 monte carlo ss?
The car is running around 180 to 200, just wondering if this is normal.

That sounds about right.. just as long as it doesnt go into the redline, you'd be fine.. but if you feel that it should be cooling better, then get your radiator flushed, that will more than likely do the trick.

or you could just try a new thermostat first

Greetings
That temperature is fine. I have a 03 SS also and thats where it runs