Should I change the thermostat if the water in the radiator is at a standstill while running?

99 gmc yukon|||If you took the rad cap off, and started the car, the water or coolant won%26#039;t move in the rad, until it reaches 195 degrees. Don%26#039;t try this when the car is up to temperature, or you may get a bad steam burn. Not sure? Get a pro to check for you.|||is your engine overheating??|||What temperature is engine when you are looking ? If not up to 195 or higher , water will not be moving as t-stat has not opened yet . If above that temp and not moving then you will have some problems and it should be over heating . More info please .|||you did not provide enogh info for any kind of answer|||NOOO





If you take the thermostat out while the engine is running you are going to burn yourself when all of the water starts pumping out of the rad hose.





Turn it off and wait until it cools down.