Should be a 195 degree.
Factory said to use a 195 degree thermostat
Next to the thermostat housing.
Factory uses 195 degree.
It should have a 195 degree thermostat.
It is up by the thermostat housing on the front of the engine.
Very close to the thermostat housing on the 4.3L and the 2.2L engines.
Probably a bad thermostat.
The temp sensor for the ECM (engine control module) is next to the thermostat housing.
Replace the coolant temp sensor next to the thermostat housing.
A bad thermostat can cause an overheat. A bad temp sensor can show an overheat when the temperature is normal.
check the temp guage if low change the thermostat
On the 4.3L it is located next to the thermostat housing. The electrical plug to it has two wires.