when the thermostat will not open when placed in a cup of boiling water
One can change the thermostat on a Chevy car by draining the coolant and disconnecting the upper radiator hose. The thermostat housing is then unbolted, the old thermostat removed, and a new unit placed in the housing.
Every oil change.
5 times
To change the thermostat in a car, first locate the thermostat housing. Drain the coolant, remove the housing, and take out the old thermostat. Install the new thermostat, replace the housing, and refill the coolant. Be sure to follow the manufacturer's instructions and use the correct tools for the job.
You should change your oil every 3,000 miles. If you drive your car rough, then you should change it more often.
Per owners manual for your car
You need to change your thermostat in the car.
To change the thermostat on a Kia Sorrento you will first need to make sure the car is completely cool since the thermostat is located near the radiator. Once your car is cooled down, simply unbolt the old thermostat and bolt in the new thermostat. It is that simple, there are no other parts to remove.
you should change oil on you car every 5000 miles
check your fluids it is probably low on antifreeze and if it still does it change your thermostat that should fix the problem
Change your thermostat!
Every 2 years