It is important that the spring end of the thermostat is facing into the engine when installed.
They are Metric bolts, 12 or 13 millimeter I think.
About $9.00
The thermostat on a 2001 Blazer is just inside the larger or upper radiator hose. This hose connects to the front of the engine manifold.
Factory said to use a 195 degree thermostat
The thermostat in the 2002 Blazer will most likely be in the top radiator hose engine inlet, depending on the engine in the vehicle. The top hose is removed then the inlet unbolted to reach the thermostat.
No.
Should be a 195 degree.
follow the upper radiator hose to the thermostat housing on engine. Thermostat is located under the thermostat housing.
You did not mention the engine size. Regardless, it is in the thermostat housing on the intake manifold.
Follow the upper radiator hose from the radiator to the engine. It is attached to the thermostat housing. Removing the thermostat housing will expose the thermostat.
Follow the upper radiator hose back to the engine, it is connected to the thermostat housing on the engine. The thermostat is located under the thermostat housing.
195 degrees Fahrenheit.