Yes I was reading somewhere online how to tell the difference between the 2 was that usually the one that went to the guage had only 1 wire coming from it and the one that went to the pcm had 2 wires going to it but both of them coolant sensors have 2 wires going to them.

Reason why I got to change mine is I got a coolant temp is always low check engine light code and it said the possible solutions was either the thermostat or the coolant temp sensor was bad or the antifreeze was too low. Well my antifreeze is fine so I was just gonna change both the thermostat and the temp sensor to be on the safe side especially since you have to take off the intake manifold to access them.

Speaking of taking off the intake manifold does anyone know how hard that is to do?