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Cooling problems

CVY2NV

By CVY2NV
in Troubleshooting & Recalls

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CVY2NV Enthusiast

CVY2NV

Posted
Posted

2014 Silverado 5.3L radiator fans turned on high while driving and temp gauge read cold. Got home shut truck off fans still on high. Disconnected neg. battery cable and hooked back up after a few minutes. Started truck fans weren’t on but gauge was cold still. Let truck run for 20 mins and gauge went up to 180 degrees. Drove truck around neighborhood and temp never rises. Got back home let truck idle for about 20 more mins and temp gauge moved to 210 degrees fans didn’t turn on. Fans never turn on while driving and temp stays at 180 degrees unless at stop light or drive thru then temp gauge goes to around 210 degrees. Could it be coolant temp sensor or thermostat stuck open? 

CamGTP Senior Enthusiast

CamGTP

Posted
Posted

Temp sensor sounds like it's having problems. If the gauge read cold but the fans kicked on high, usually the temp sensor is not working right.

CVY2NV Enthusiast

CVY2NV

Posted
  • Author
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Brought all the parts already. Do you think I should just change our thermostat when changing out sensor?

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted (edited)

Thermostat takes me like 20 minutes tops. Super easy. 

 

 

Edited by Grumpy Bear
CVY2NV Enthusiast

CVY2NV

Posted
  • Author
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Thank you so much. Gonna be changing out tomorrow and I’ll update post with how it goes. 

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CVY2NV Enthusiast

CVY2NV

Posted
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Update: changed out thermostat and cooling temp sensor and temp gauge reading  normal and fans turn on and off.
 

There is a noise coming from near thermostat housing while idling. It’s like a whistling or whining noise. Not sure if thermostat makes that type of noise. Any suggestions would be appreciated. 

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