coolant temp. sensor on 2001 Chevrolet Blazer

I have a 2001 chevy s10 blazer 2 wheel drive with the 4.3 vortec. I need to replace the coolant temp sensor. Where is this located? Thank you

Asked by for the 2001 Chevrolet Blazer
The Coolant Temperature Sensor or ECT sensor for the gauge is in the drivers side cylinder head between the front two spark plugs. Use care and allow enough time for the engine to cool before removing the ETC sensor. You will need to refill the cooling system.
Bellow a picture from a repair manual
Thank you very much for your help.