Also, i guess i should add, i have a 2017 Acadia Denali, and apparently there are two different motors in that year, depending on which one you have, the other engine that is different than the one I have, the sensor is located in the front of the motor down low.View attachment 10625 View attachment 10625 View attachment 10626 View attachment 10627
Here is a picture of the sensor, the thermostat assembly and the location of both the thermostat housing and sensor located right beside the housing. it it kinda hidden under the intake on the passenger side. The thermostat house runs from the passenger side to the drivers side and then 90's and head toward the radiator and attaches to the upper radiator hose. Maybe if you can find the upper radiator hose and follow it, you can fin where the thermostat housing is, and the sensor is literally about 1 inch from it..