2003 chevy trailblazer cts

wondering where the coolant temperature sensor is located on my 2003 trailblazer

attached to front of intake manifold

the truck is not av 6.is a 4.2 f.i. inline six no intake manifold.thanks.

So it takes no air or fuel into the system? Try again, bucko. It may not be on top of the engine, most likely it won’t be. That doesn’t mean is doesn’t exist.