Sigh...I just got a 2000 Cadillac SLS about a week ago. I drove it about 6 miles on the e-way and the temp light started moving to the right...the display read "engine coolant temp hot idle engine a/c off" or something to that extent. I've taken it to several people and they say they can't find anything else wrong. I do not know what else to do now. I love how it drives but right now I can't even drive across town. Does anyone know what could make this temp go up and stay up like that? One of the mechanics even told me that it could be an airflow problem and if that's the case then I'm wasting my time? Awww man, I had thermostat replaced and had a flush & fill to no avail...kinda bummed right now because I love the car to pieces.