Where is Coolant Temp Sensor located on 2006 Trailblazer?

The coolant temperature sensor on a 2006 Chevrolet Trailblazer is typically located near the thermostat housing, which is situated on the engine block. You can find it on the passenger side of the engine, just below the intake manifold. It's usually a small sensor with an electrical connector attached to it. To access it, you may need to remove some components or hoses that obstruct your view.