How To Change A Thermostat On A 2005 Chevy Equinox. Also remove radiator cap and run engine to see if bubbles come out of the radiator. Follow the top radiator hose and it will take to the thermostat housing it is under the housing.
Put in gear with your foot on the brake and rev up to see if there is vapor coming out the exhaust. If i rev up to 3000 rpm the temp comes down quickly. Temp fluctuates from normal to in the red at idle.