Question about 2003 GMC Envoy
The thermostat reading for the exterior temperature is stuck at 50 degrees. How can I fix it?
Posted by Anonymous on
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Posted on Jan 02, 2017
your vehicle is new enough that I would say one of your components is defective,diagnoses from a dealer or auto electric shop would be recomended.Sounds like your sensor outside is defective.
Posted on Jul 23, 2009
External sensor is most bad or cloged. Remove the plastic cover that the hood prop rod fastens to and you will see the sensor. I purchased mine from the dealer for twenty dollars. If it gets worse and reads below 32 degrees your a/c will not come on. This happened to me in July.
Posted on Jan 24, 2010
--Where are you measuring the temp? If it is from the gauge, then the sending unit for the gauge could be inaccurate. The only perfectly accurate way to measure the temp is at the radiator, measuring the actual antifreeze with a special test cap that lets you put a thermometer in the fluid:
--Another possibility is that the new thermostat is bad or mislabeled. Wouldn't be the first time! You might want to take the old thermostat and put it in a pot of water on your stove. Stick a thermometer in the pot as it comes to a boil and see when the thermostat opens. At least you'll know if the old one was really bad or not, and that is a clue to look elsewhere.
Posted on Nov 28, 2010
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