Temp gauge-car overheating w/o steam.

Tks 4 ur reply. I did several hrs of research yesterday before taking it in for a diagnostic this am. No error codes came up and they ran the car for "long time" w/o any symptoms occurring. Not sure when steering fluid was last checked. Some online posts say it can play into overheating issues along with the ones u mentioned. Unfortunately, there is a pattern of the same issues I've been having that lead to tranny or engine replacement. The car drives like butter and knows where it's going!!