Also--my check engine light never came on prior to this happening.
Symptoms prior to overheating (which happened with a/c OFF and idling about 10 mins in Hawaii weather)
A/C had been running "outside" air at start up, as soon as I drove the vehicle it cooled immediately. Long idles it would cycle to "outside" feeling air, even though I had it set to max a/c and temp to 60 or whatever is the lowest.
Fan ran loudly after vehicle was turned off. Ran about 3-8 seconds.
That was my only warning, I am so grateful my car did not overheat in rush hour traffic!
There are a few options I can check into for you. Please send me a private message with your VIN, mileage, best daytime phone number, full name, and dealer name/location.