Fan running after I turn off vehicle - TerrainForum.net: GMC Terrain Forum
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post #1 of 5 (permalink) Unread 05-30-2019, 08:17 PM Thread Starter
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Fan running after I turn off vehicle

Good afternoon - Hoping someone can help me out or point me in the right direction.
Today after normal driving home from work, about 15 miles on the freeway. I noticed that my temperature gauge hadn't moved off of cold at all. Truck was running fine. When I got home and turned the truck off, I could hear a fan running and felt air moving quite a bit. The truck was not hot at all.
Any ideas of what that is? Is my temperature gauge shot and needs to be replaced or is it something else?
Any advise would be greatly appreciated.
Thank you.
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post #2 of 5 (permalink) Unread 05-31-2019, 12:19 AM
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Garage
Could be the thermostat is stuck or the ECTS is not working. The ECM is not reading any valid temperature.



The fan keep running after switching off is a safety measure when the ECM cannot read the temperature it will keep the fan blowing for 10 to 15 mins after you switch off to make sure the car is not in a situation where it can cause a fire (as the ECM cannot determine if the engine is ice cold or burning hot).


Once you fix the temperature reading issue ...the fan issue will go away too.
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2018 equinox 1.6l Diesel LT, Hecho en Mexico, julio 2017
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post #3 of 5 (permalink) Unread 05-31-2019, 07:26 AM
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Quote:
Originally Posted by aeide View Post
Good afternoon - Hoping someone can help me out or point me in the right direction.
Today after normal driving home from work, about 15 miles on the freeway. I noticed that my temperature gauge hadn't moved off of cold at all. Truck was running fine. When I got home and turned the truck off, I could hear a fan running and felt air moving quite a bit. The truck was not hot at all.
Any ideas of what that is? Is my temperature gauge shot and needs to be replaced or is it something else?
Any advise would be greatly appreciated.
Thank you.

It would help in the diagnosis if you told others what type of "truck" you are referring to ? A Silverado ? Maybe you are on the wrong Forum.

2018 Equinox LT1 1.5 L 4 cyl, AWD, S/R Cajun Red Tintcoat/Black

2010 Equinox LTZ 2.4 L 4 cyl, FWD, S/R Cardinal Red/Black
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post #4 of 5 (permalink) Unread 05-31-2019, 08:48 AM Thread Starter
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Sorry, it is a 2015 GMC Terrain 4Cylinder AWD
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post #5 of 5 (permalink) Unread 05-31-2019, 10:24 AM
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I assume the coolant level in your expansion tank is showing at the normal level. Correct?
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