Where is the location of thermostat sensor on 2004 Chevrolet trailblazer?
If you are reading this then you must read the posts on our forum about the thermostat and replacement. We have all the instructions you need for your trailblazer or other gmt360 platform truck.
Where is the temperature sensor on a 2003 Chevrolet trailblazer is it hard to change what do i do to see the answer?
The 2003 Trailblazer should have the 4200 I6 Vortec engine. You will find your ECT (engine coolant temp) sensor and coolant thermostat just to the passenger side and front of the engine. There should be a larger radiator hose going to the thermostat housing. If you can see your oil cap...look just to the left (passenger side) and down on the side of the engine. The electrical plug is your ECT sensor and below that...thermostat…