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