I have a 2004 Durango that comes close to overheating. This only happens in the summer on hot days when running the A/C and when coming to a stop. I have taken it to a Dodge dealer, they keep it for a few hours and said everything was fine. It has just started do this for the past two summers. Not really sure how to remedy the issue??
Take it to a reputable independently owned and operated shop. Tell them the symptoms just as you’ve told us. This should not be rocket science to diagnose. Clearly the dealership doesn’t care. They’d just as soon see you trash the engine and need a new car.
The possibilities include (but are not limited to) a clogged radiator, a sticky thermostat, a malfunctioning cooling fan, or even a worn out water pump (the impellars can erode).