where is temperature sensor located on a 2005 Pontiac grand prix?

Which one??

There's a temperature sensor below the thermostat housing. You will need to remove a section of the exhaust pipe to get to it easily to unscrew it and replace it.

Is that the one she was talking about?? It was unclear to me, outdoor air sensor, cabin air sensor, engine coolant temp. for fuel injection control, sensor for the dash gauge, I had/have no idea which one she was addressing, let's hope your shot in the dark helps her out.

Well, that's the coolant temperature sensor for the dash gauge, which is the only one you can read without an OBD scanner, so it's my best guess.

OK, good guess.....free info is worth every cent that is paid for it.

where D heater sensor is

Where is the temperature control sensor located

I'm trying to replace that exact part Dorian is taking about and that exact pipe got in my way. Anyways how do I take that pipe out?

Talking*

To remove that section of exhaust pipe, you will need to remove the bolts from the flanges on each side.