While driving, the electric fan (radiator) will start running?

2014 CHEVROLET SILVERADO
175,000 MILES • 4.3L • V6 • 2WD • AUTOMATIC
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MRWARREN
  • MEMBER
  • 1 POST
intermittent issue. While driving, the electric fan (radiator) will start running, the temperature gauge drops (doesn't register a temperature) and, if the A/C is on, stops cooling. still blows but not cool as if the compressor kicks off.
I can disconnect the battery ground and reconnect it. Then everything operates normal. I then have to reset some of my radio settings.
Lately, this issue has been happening more frequently.
Apr 19, 2025 at 7:27 AM
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,176 POSTS
It sounds like the engine coolant sensor is going bad and making the PCM think the engine is overheating. We might want to do a CAN scan which this video will show you how:

https://youtu.be/u-4syLc-ifQ

Here is the location of the sensor so you can swap it out. Check out the images (below). Let us know how it goes.
Image (Click to enlarge)
Attached Media
Apr 20, 2025 at 11:25 AM
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