2015 Chevy Silverado Temperature Sensor keeps going bad

[Ronnioe Walls]

I have a 2015 chevy silverado and the temperature sensor keeps going bad. I have replaced it 5 times in the last year and a half. This doesn't seem normal. Any ideas what may be causing it? I have replaced it with several different manufacturers and some times they last longer than others. Please help!!

[rav3]

I'm curious...have you replaced with a GM/AC Delco part?

[JimCost2014]

Ever replaced the thermostat?

[OffTheAir]

The symptoms of a bad thermostat in these trucks - with the gauge pegging at the bottom - almost mirrors that of a faulty temperature sensor. I replaced the sensor first only to find that, while it did make the problem go away for a short time, it never really did fix the source and eventually it came back.

 

Have you only been replacing the sensor and not the thermostat? If so, I would bet money the thermostat is the root cause of your troubles. Please keep us posted!

[Ronnioe Walls]

On 3/16/2023 at 2:47 PM, JimCost2014 said:

Ever replaced the thermostat?

I have not. 

 

[Ronnioe Walls]

I will try and replace the thermostat and see if that helps. Thanks guys.

[Tabathav]

I have replaced both parts twice and now about to have to replace them both again any luck on why this problem keeps happening????

[silveradosid]

like me, might be bad luck. on my 2014 i replaced the thermostat 3 times before i got one that lasted. all 3 were from gm and the last one that has continued to work was motorad

[mikeyk101]

3 hours ago, silveradosid said:

like me, might be bad luck. on my 2014 i replaced the thermostat 3 times before i got one that lasted. all 3 were from gm and the last one that has continued to work was motorad

Interesting. I had the opposite experience. OEM went bad after 7 years and I replaced it with a Motorad. That failed within a couple months and I installed another GM one but went with a 194⁰ one. It has worked just fine ever since.

[Tim R]

I'm having same issue with my 2016 sierra. What is the fix for this problem. Does the thermostat need to be replaced as well as the temp senor?

[Christopher Dawson]

Most likely neither your thermostat or temp sensor are bad. Most of the time it will be battery, alternator or ecu. Try removing your negative cable for 30secs then reconnecting. Power surges can cause the ecu to become confused and lock out the temp sensor and kick one the fan to prevent the engine from overheating. Removing the neg cable allows the ecu to reset. I’m no mechanic but it has been the case with my 2014 Chevy PU. I’d say it’s time to replace battery and see if that fixes your issue

[Christopher Dawson]

Double post. Sorry!

Edited March 1, 2024 by Christopher Dawson

[James01]

I have a 2015 Silverado and the thermostat sensor randomly stops working. It will start working after a few runs. 

[Philman]

I have 2017 6.0. I changed ECT Sensor and Thermostat. And still have engine light on An temp gauge still shows lowest temp. 

[Matty Matt]

On 3/1/2024 at 8:51 AM, Christopher Dawson said:

Most likely neither your thermostat or temp sensor are bad. Most of the time it will be battery, alternator or ecu. Try removing your negative cable for 30secs then reconnecting. Power surges can cause the ecu to become confused and lock out the temp sensor and kick one the fan to prevent the engine from overheating. Removing the neg cable allows the ecu to reset. I’m no mechanic but it has been the case with my 2014 Chevy PU. I’d say it’s time to replace battery and see if that fixes your issue

Above worked for me! Was just about to swap thr sensor when i read above and the battery reset fixed my issues. My issues were: check engine light, no AC, temp gauge all the way low on dash never going up, and the radiator fan blowing like crazy even when i shut it off. After battery reset all were immediately fixed:) 2015 silverado