x-no-archive:yes My brother has I think a 2002 Dodge Dakota with a 6 cyl engine. He says it started running hot then the check engine light came on. He said there are no leaks. I am assuming it is the thermostat. Where is the thermostat on this engine and is it hard to get to and change? What should I look out for? Could this just be the temperature guage sending unit? Is the termostat hard to replace? Any advice is appreciated!