Radiator Fan Won't Turn Off: 2014 - 2019 Silverado & Sierra: Bad Coolant Temperature Sensor Replaced

[@TheBrothersWorkshop]

Radiator Fan Won't Turn Off? GUARANTEED FIX: kzbin.info/www/bejne/bZiuk39-nalkmdk

[@leonarddayton9618]

My mechanic tried to make $250 to change the thermostat. The fan did go off it did stop.

[@paulmanning1671]

This happened to me over the weekend, I decided to replace both the sensor and thermostat. In my situation, I lost about a half gallon of antifreeze. Total cost at Auto Zone for the sensor, thermostat and a gallon of antifreeze was $110. Tools/Supplies were Channel Locks for the hose clamps, 19mm deep socket for the Sensor, 10mm socket for the thermostat and negative battery terminal, old towel to absorb antifreeze spillage, and funnel for reservoir to add new antifreeze. The sensor came with an adequate amount of Teflon Tape, so I didn't add more. After laying out the needed tools, it took less than 30 minutes to complete the job. This task is easier than an oil change.

[@TheBrothersWorkshop]

Glad we could help out. 🤙

[@RiZeDynamic]

Changed it turned the truck on the fan was still blowing hard and read the comments and disconnected the negative and positive for about 4 minutes reconnected them and went back to normal thank for this guy and the people in the comments !!

[@TheBrothersWorkshop]

Glad it worked out for you!

[@mhunskor]

Another KZbin video that solves the issue. Clear, concise and a savings to the bank account. Gives a guy the confidence to try himself and avoid a trip to a mechanic. Great job!

[@TheBrothersWorkshop]

Hey Mike, glad you enjoyed the video. If you try it, let us know how it works out for you! Also, we have a few more videos that might help you out with your truck. Don't hesitate to check them out!

[@mhunskor]

​@@TheBrothersWorkshop From the moment I noticed the problem, found your video, bought the part and spent 15 minutes fixing the problem. This was all last night in the dark. It's running smooth today. Watched your other videos and if another issue arises, it appears that replacing the thermostat is about as simple! In short, your solution worked awesome!

[@TheBrothersWorkshop]

Glad to hear it! 🙌

[@armyinfantry1327]

I got my 2017 Silverado LTZ in 2016.Yesterday my fan stayed on and the AC stopped working. I followed both links. I changed out the sensor, thermostat and hose and I'm back on the road. A neighborhood mechanic said $150 in labor to do it. I just had back surgery but I did it myself. You made it very simple and I thank you Sir !

[@TheBrothersWorkshop]

I'm glad that this video helped you out! Thanks for watching and taking the time to leave the feedback. 🙌

[@kerriehorton4797]

What did you do when the A/C stopped working? Replacing both the sensor and thermostat fixed my fan from running, but now my A/C stopped working. 🤦‍♀️

[@armyinfantry1327]

Omg ! I'm not sure what the problem is with your AC. I did replace the sensor and the thermostat though. Its been working fine. I'm curious though why your Ac stopped. I'm in Arizona and we aren't using AC! Where are you ? Lol

[@williamdodson9632]

Great video! Helped me solved the issue. One recommendation, remove the cap of the coolant reservoir to remove pressure from the system. You will still lose coolant but you are less likely to take coolant to the face ore get it all over everything!

[@danielmoody8590]

Thanks!

[@randomclips9122]

Thanks!

[@RC-wm2ip]

Make sure you disconnect the negative battery terminal for about 30 seconds and then reconnect. It will allow your gauges to all reset. Once I did it with mine, the band shut off in the gauge worked. Good video

[@TheBrothersWorkshop]

Thanks for the tip RC.

[@barlowbrian521]

I did my truck this morning and once I finished started the truck the fan was still running so I disconnected the negative cable and it work fine! Here a FYI if you’ve had this issue on the road and can’t figure out if you need a tow truck just disconnect the negative cable it will reset your computer and the temperature gauge will start working again for about a hour but replace the part like this video shows and keep riding.👍🏆

[@Crusty-eu8wj]

Funny thing is, disconnecting the battery terminal for a few seconds stops the fan issue for me anywhere from a day to MONTHS. I'm obviously resetting something more than the gauges. Still, it comes back eventually. I can't help thinking it's not a sensor or thermostat "sticking" as that is mechanical, not electrical.

[@frankstone3994]

@@Crusty-eu8wj Same here. After replacing the sensor and thermostat(I disconnected the neg. battery lead while doing this)the problem stopped for several months and then began again. Now, after disconnecting the neg. lead, the fans might stay off after the key is turned off for a week and then the problem starts again.

[@jayawhyman1564]

​@@Crusty-eu8wjmine is doing the same thing..did you ever figure out what was causing it to keep coming back?

[@charlespreasha2224]

I purchased the parts on Amazon and then took the advice in the comments of disconnecting the negative battery cable for 5 minutes and that fixed my issue of No AC and fan continually running. So then I had to go back to Amazon and cancel my order. KZbin is the best.

[@TheBrothersWorkshop]

If you did not replace the parts, your issues WILL RETURN, within a few days. Please follow our instructions in the newest video we made about this topic. We detail why the issue will return if you fail to replace the defective parts. I've linked it here for you: kzbin.info/www/bejne/bZiuk39-nalkmdksi=LyV9pvN42YhHa8i1

[@georgeburge7136]

I’m 63 years old. Recently retired govt worker. Married and a fixed income. Kinda grew up working in a neighbors gas station repair shop back in 70s . Learned a lot and even made a living at it there. But it’s been a long time since I picked up a ratchet under a hood. Wanting to save money I thought I’d give it a go . Thanks to your presentation and the Lords help it worked out fine. I also disconnected the battery after it didn’t work initially and then all was well. Thank you.

[@TheBrothersWorkshop]

Hey George! Thank you for the kind words. Feed back like this is the motivation we need to keep making videos like this. If you have any more issues going forward, we have a trouble shooting video linked here: kzbin.info/www/bejne/rZbHapiQrbWqqbM

[@ChuckChurch]

Great video. It helped yesterday on my '14 GMC. The comment about removing the big wide intake helped, just two hose clamp fittings and two EGR clamps. A couple other symptoms were a check engine light coming on (don't know code, don't have a scanner), and my air conditioning only blew warm air when the coolant temp was 160. Seems good now. By the way, if you carefully remove the coolant fill cap on the left side of compartment, it'll depressurize it and hardly any coolant will come out when you pull the sensor out.

[@TheBrothersWorkshop]

Hey Chuck! Thanks for watching the video. We're stoked it helped you. The AC blowing warm is an issue we had as well, and thanks for the tip on how to depressurize the lines!

[@ernestoguerrero326]

Ive done the sensor and termostato change but my fans are still turning off after I turn my truck off what do y’all recommend me do also I’ve change the relay

[@jameschester3986]

I been having this for months on and off

[@masdbo]

@@ernestoguerrero326 clear the code, 128, it will lock in but no check engine light.

[@jjarriola1955]

Great video. Easy changeout. Did it, and it worked, for a couple weeks until it happened again. Should i just switch out thw thermostat as well?

[@markcox1457]

Exactly the problem I am experiencing with my 2014 Silverado. Now, I know what to do to fix it and save money I don't have to spend! Thanks for the video, nice job!

[@TheBrothersWorkshop]

Glad to help!!

[@Ponyboy7801]

Replaced mine just now. 2015 Chevy Silverado 1500- Thanks for the DIY video. Easy fix ! Appreciate that you listed the tools needed , as I needed to insure had those while I was picking up the part.

[@TheBrothersWorkshop]

Glad we could help!

[@richiela2488]

My truck was running low on coolant which tripped the sensor. After adding coolant I still didn’t have any change, but after reading these comments I disconnected the battery for 10 min and that fixed my problems. I did buy a new temp sensor, but since I don’t need it now, ima leave in the glove box for now. Thanks for the video guys!

[@TheBrothersWorkshop]

I think you misunderstood. Disconnecting the battery is only done after you replace the thermostat and the temperature sensor. If you don't fix the issue, the problem will continue. Eventually your computer will realize that this issue is still going on and you'll be back to square one.

[@richiela2488]

@@TheBrothersWorkshop Thank you. But my problem with running fan has stopped, but I still have the sensor if case things go bad again

[@garygreenacre1507]

Awesome video and thank you. Picked up the sensor last night on way home from office Christmas party and in 20 minutes this morning had it in and did a test drive….it worked! $38.88 cost including a 19 mm deep socket.

[@TheBrothersWorkshop]

Glad to hear everything worked out well for you!

[@seanabbottband]

It worked! This is the first time I fixed my own vehicle, your channel is very informative, thanks so much!

[@TheBrothersWorkshop]

That's really cool to hear! That means a lot. It also goes to show that my goofy saying is correct! "A can do attitude can do anything!!" 😁😁

[@rchdada]

I changed both sensor and thermostat my first time and your videos help me a lot!! no issues after parts were replaced. thank You!!!!

[@TheBrothersWorkshop]

Glad to hear that! 🙌

[@luismgaytan4940]

I did this and still not working!! Need help 🥹🥹

[@dstrupp82]

Same issue on mine. Changed out the sensor and started it up again, heard the fan running loud again and drove it down the block for a bit. Fan kept blowing after turning engine off. Decided to disconnect the battery as others have done here and reconnected. Fired her up and the fan is no longer blowing hard and the temperature is back to normal. Thank you!

[@TheBrothersWorkshop]

Glad could help!!

[@lesmarsh5879]

This video was spot on! Had my problem fixed in 20 minutes after I got home with the part & socket I needed

[@TheBrothersWorkshop]

Hey! We're glad that this video helped you out.

[@easyhangit604]

​@TheBrothersWorkshop . Why wouldn't my upper hose have pressure in it if it's just the sensor? I have plenty of heat too.

[@kylesmith5628]

Thank you so much for the help! Saved me labor costs for a mechanic on my 2015 Tahoe. The hardest part was getting the clip off of the sensor. Great video man!

[@TheBrothersWorkshop]

Thanks Kyle! Glad we could help.🙌

[@felixbotello7067]

I fixed my fan radiator on my 2014 Chevy Silverado 6 months ago because it wouldn’t shut off even after the truck was turned off. And I’m back on KZbin trying to figure out why it’s not working again. Very helpful video thank you.

[@TheBrothersWorkshop]

Glad we could help Felix!

[@backwardmist2303]

so replacing this what he did worked? i have the same problem for my gmc sierra 2014

[@user-er7le3fd5f]

Great video! I’m probably the most mechanically un-inclined person I know and I just switched out my sensor on my 2016 Silverado. Thanks for posting!

[@TheBrothersWorkshop]

I'm glad to hear that! We strive to make this as easy as possible. If you end up having issues, the video you just watched is one of a three part series. We remade the video, and all of the steps are listed within this video: kzbin.info/www/bejne/bZiuk39-nalkmdk

[@warrenduree9417]

Sometimes after swapping the faulty temperature sending unit, the fans may continue to run full blast for a few driving cycles if it threw a code. To speed that along so you don't have to wait the few driving cycles for the code to clear, unhook the negative cable from the battery for 10 minutes to reset the PCM while you're swapping out the sensor. It will clear the code and will run normally the next time you start it, instead of two or three times later.

[@TheBrothersWorkshop]

You are correct, we did a follow up video explaining that: kzbin.info/www/bejne/rZbHapiQrbWqqbM

[@efrainsoto1863]

I’ll will try that

[@itzzakesz7253]

After replacing the faulty temperature, the temperature gage starting going up as soon as I start the car, any suggestions why

[@optimusprime2125]

Would turning the engine on and off 3 times work?

[@AndyBlue]

Great tip! Thank you!

[@kevinaaron7084]

The video did help a lot. So thank you! The only thing I would add is that on a 2016 Chevy Tahoe, the ECT Sensor is in a very tight place next to the thermostat. It is very difficult to get the harness cap off the sensor. Because the area was small to work in it wasn't easy to remove the harness. There is a light colored plastic clip that needs to be removed first so you can pinch the small black release tab so the harness cap separates from the sensor. Otherwise, in a tight area not knowing this you could damage the harness cap that snaps on to the sensor. I didn't know what to expect and was concerned to break the plastic. Had a mechanic friend help after many tries and then it was easy. But not knowing this made it difficult.

[@TheBrothersWorkshop]

Thanks Kevin! If you have any other issues with this problem, I've linked two videos here for you: kzbin.info/www/bejne/rZbHapiQrbWqqbM kzbin.info/www/bejne/jaevqnWDbat7mq8

[@JohnG-is7eg]

Good video. I've also seen 2 2018 Silverados that had a bad plug on the AC pressure switch near the compressor. It caused the same problem. The wires broke and it was pretty easy to spot

[@TheBrothersWorkshop]

Thanks for the tip!

[@paulirwin605]

I had the same problem, quick search brought me to your video, and I was able to get this problem fixed for under $20 in no time at all. Thanks! On another note - when the sensor stopped working, it threw a code and my check engine light came on. As a fail safe, I presume, it shut down my A/C. I was worried this was unrelated and I had two problems. Once I replaced the sensor, my check engine light was still on, and my A/C was still not working. I went to O'Reilly to get them to reset the codes, and they told me they won't do that anymore. Not sure if that was true or if they just didn't want to do it. Anyway, so I disconnected the battery for a few minutes, and after that the codes were cleared and my A/C was working again right away. So, maybe that experience will help someone else along the way. Thanks for the good video Amigo!

[@TheBrothersWorkshop]

Glad we could help out! However, this was one video in a three part series. If you didn't see the other two please watch our new condensed version linked below. 👇 It goes over common issues and troubleshooting: kzbin.info/www/bejne/bZiuk39-nalkmdksi=LyV9pvN42YhHa8i1

[@paulirwin605]

@@TheBrothersWorkshop Thanks for the updated, condensed video! I don't know that I am going to go in and replace the thermostat right now, but I may be cussing myself for it soon. 🙂Fine work and I am going to definitely check out your other videos!

[@motodv8moto531]

I replaced the sensor and thermostat...it still stayed on. Once i disconnected the battery it was good to go!. I might have not needed a thermostat to begin with.

[@TheBrothersWorkshop]

You never know, but it's always good to replace it just in cases.

[@Solisdany9]

I did the same thanks! Headache !

[@emmanuelsanchez1749]

This comment literally needs to be pinned, mine was still running as well I read this comment and tried it out and now my truck is good. Thank you

[@walkerhomestead6853]

I changed both sensor and thermostat and the fan still comes on. I took cable off battery several times.. any tips?

[@emmanuelsanchez1749]

@@walkerhomestead6853 did you try just removing the positive?

[@gailpaul3563]

Great video. Did it in 20 minutes. The only thing that was missing from the video was how to shut the fan off so the work can be done. I had to remove the fan’s fuse. I could have disconnected the battery, but the fuse was easier and quicker. Great video still! Thanks!

[@TheBrothersWorkshop]

Hey Gail! We're glad you found the video helpful. Typically we found that if the fan is still running when the vehicle is off, turning the truck on and off again will stop the fan. Also, if the issue starts again, you will need to disconnect the battery to reset the trucks computer. The truck will then read all of the new components correctly. It doesn't happen all of the time, but sometimes it's necessary. Also, teflon tape can sometimes make the sensor miss-read. Removing that can also help fix any further issues. Have a great day and thanks for watching! 🙂

[@z84danmanz]

@@TheBrothersWorkshop yeah i turned my truck on and then turned it off and the fan turned off too. Thanks

[@user-ex8rx4zd3t]

Thank you for helping me replace the sensor the radiator fans are not kicking on all the time anymore. I will keep an eye on the thermostat have a great weekend

[@TheBrothersWorkshop]

Glad to help! If you have any issues this video is an updated and detail explanation with trouble shooting: kzbin.info/www/bejne/bZiuk39-nalkmdksi=OmipDk8TPgWuBa65

[@user-ex8rx4zd3t]

A few days later the fans kicked back on as they were a few days ago. Time for a t stat? Any ideas?

[@dannybravo5682]

11/13/23 very helpful video. Thank you. I had the same problem fan stood on 5-10 min after shutting truck off with check engine light on. Changed the temperature sensor, and disconnected the battery. Started up, temp gauge works normal, and fan doesn’t come on after turning truck off. No check engine light. We good! Thank you again

[@TheBrothersWorkshop]

I'm glad we could help!! It's such an easy fix, I'm glad people can fix this themselves rather than go to the dealership.

[@kevindye2166]

This is such a great video. I used it and your other one to replace the thermostat, and the temp sensor in my 2015 silverado when the fan wouldn't turn off, and the gauge wound get over 160. So I think the trick of whole issue is to replace BOTH, and to unhook the battery during the process to reset. All three worked for me. Thanks again for a great set of videos.

[@TheBrothersWorkshop]

We really appreciate that! We're glad our videos helped out!!

[@bailykittrell1609]

This is what we had to do. After replacing both the fan was still running and the temperature gauge on the dash was stuck on 160°. Once we unhooked the battery it reset and the fan cut off and the dash temperature gauge began to work.

[@ricky1FV]

@@TheBrothersWorkshop hey man i just replace my temperature sensor but fan still on when I turn the truck off do you think I should unhook the battery or will be something else, thanks for the video

[@user-zo1yb8rk1d]

I’ve put 2 different sensors on my 2015 Tahoe an it will do good for a week or so then the temp gauge will stop reading an fan won’t kick off, I’ll have to undo the battery terminal then hook back up it will do ok for a few days, what could be the issue

[@darinmislow9022]

Thanks guys, had the same problem with my truck, followed your instructions a nd it worked perfectly. I can't even imagine what a dealership would have charged if I had went that route!!

[@TheBrothersWorkshop]

Thanks man! I'm thinking the dealership would charge a few hundred dollars. Glad I could help you out!

[@amandagunter6817]

Thanks for this post. Changed the sensor and thermostat fan still on. Come back in and read the comments went back out took the pos. cable off everything was fine.

[@TheBrothersWorkshop]

Awesome! 🙌🤙

[@joshbennett3620]

It’s a lot easier to replace, if you remove the air intake assembly, first. It takes less than a minutes to remove it. It also allows you to clean your throttle body (if needed) and any coolant that gets spilled on the front cover during sensor replacement.

[@TheBrothersWorkshop]

Thanks for the heads up Josh!

[@michaelrehkop4817]

If you let the vehicle cool down and then you can remove the radiator cap or the coolant reservoir cap whichever one your particular vehicle happens to have. By doing this you don't have to worry about any fluids coming gushing out from underneath that sensor. As a result you don't have to worry about the anti-freeze harming any Electronics such as wire connectors, alternator, distributor cap if applicable, Etc.

[@joshbennett3620]

@@michaelrehkop4817Coolant is going to flow out, as soon as you remove that sensor, regardless of whether the system has pressure on it or not. Besides, it ain’t like coolant is going to hurt the alternator or any other part of the electrical system, anyway. It’s got sealed connectors.

[@AndyBlue]

Nothing came out when I changed mine. Taking the I take would just be more work. 19mm deepsocket on extension no problem. Literally took all of 5 minutes to change mine. Took longer stuffing rags all over the place in case it did shoot out.

[@michaelrehkop4817]

Let the engine cool down some first and then remove pressure in coolant system via radiator cap or coolant reservoir cap so that no coolant spurts out onto electronics like coil pack, distributor cap (if applicable), alternator, electrical connectors.

[@TheBrothersWorkshop]

Thanks for the tip!

[@gustavodelgeh3580]

How do you remove the pressure from it

[@SanMario95]

@@gustavodelgeh3580 let your truck cool off and remove the cap from the coolant tank

[@Luis-wl5mn]

Thanks for the video. My 2016 chevy cts went out as soon as i got home at 11pm. The fans kept running for like 5 mins then turn off, so i checked this video out and i found out that it was my cts so i went to my autozone bought it put it on and bammm, good to go. Needed my truck for work, so i needed to change it lol. Thanks alot man

[@TheBrothersWorkshop]

No problem! Don't forget to reset the computer by disconnecting and reconnecting the battery.

[@bradroth472]

Worked great!! Didn’t read the note about not using tape, but my new sensor came with thread locker so I didn’t use anyway. Replaced sensor, serviced coolant, reconnected battery…..fixed the high running fan and

[@TheBrothersWorkshop]

Great to hear! If you ever have issues down the road, our trouble shooting video is linked here for you! kzbin.info/www/bejne/rZbHapiQrbWqqbM

[@SugarWire.]

Thank you! I showed this to my husband and we were able to fix the problem. 🥰

[@TheBrothersWorkshop]

Glad we could help!!

[@Max-bg1ln]

Much appreciated man, this is literally happening to my 2017 Sierra, i changed the thermostat and the fan still kept running, now i know what the issue!

[@TheBrothersWorkshop]

Glad we could help. Follow these little tips as well! kzbin.info/www/bejne/rZbHapiQrbWqqbM

[@stevensiebert9623]

I have a 2017 just bought it 2 months ago when the weather was cold yesterday was a hot day so decided to use ac well it was blowing hot air so did the usual checks clutch not turning fan not turning so check the feon was at charge level so started checking fuses and noticed the cooling fan relay was missing and a 10amp fuse so im guessing the previous owner had the same problem pulled the relay so it stop running now I'm waiting on a new relay because no one auto zone or advanced auto had one in my town but I'm guessing once I install it il have the same issue so I'm glad I came across this video thanks

[@TheBrothersWorkshop]

That is very interesting. Once you get a new fuse,.let us know what happens! P.s..read the video description because we have two more videos about this issue. A troubleshooting video and a thermostat replacement video. I highly recommend watching them.

[@marku8038]

Changed out the sensor, fan still running on high. Damn it!! Then I watch 5he rets of the video. Disconnected the ground, works like a champ.

[@SKgoon]

Thank you!! Saved me hundreds of dollars in mechanics fees

[@TheBrothersWorkshop]

No problem at all! I'm glad we could help!! 🙂

[@joehernandez8208]

Thanks for the great video. I went ahead and just changed both at the same time, had 70$ in it and it took about 20 minutes. I didn’t even have permatex all over my hands after (cause it’s not needed) unlike the old cars I’ve wrenched on years ago. Took longer to open the pinch clamps.

[@TheBrothersWorkshop]

Hey Joe, thanks for watching the video. Glad we could help and everything worked out for you!

[@TX-oo2rn]

Thank you brother. 2014 LTZ, and the little things are slowly appearing. Glad you took the time to share all the details. I'm subscribed..

[@TheBrothersWorkshop]

Very glad to have been able to help. If you need anything in the future, check out our pinned comments. It has our detailed video about troubleshooting any issues that my come up down the road.

[@tommybegay7014]

Got her done! Appreciate the video. I wanted to take off the intake but couldn't figure out the egr connections and didn't want to break the plastic. The wiring conduit leading up to. The sensor was already breaking off to touch. Ol' trucka has 245K on her.

[@TheBrothersWorkshop]

Glad we could help you out. Hopefully you can get another 245k out of her!

[@franswawilliams]

Easy to follow and fixed immediately. I had to clear the codes after I replaced the sensor. Once I erased the codes, the fan was back to normal and the maintenance light was gone. Thanks for the video.

[@TheBrothersWorkshop]

Glad we could help! 🙌

[@user-bo2st6vr1q]

Yessir it did it. Disconnect the ground cable first yooo.

[@chrism2839]

Did exactly as you said while also loosening the cap on the coolant container and ALOT more coolant came out. Also had the negative battery unplugged while doing this . Installed new CTS and reconnected everything, turned on my truck and everything fixed. Let it run for a bit then drove it around. Thanks for your help man. I greatly appreciate it.

[@TheBrothersWorkshop]

Glad we could help out. How is your truck doing besides this issue?

[@chrism2839]

@@TheBrothersWorkshop I did that on a Friday night . Only drove about 30 miles on the weekend. Monday on the way to work , started again doing the same thing. Came home replaced the thermostat , reset the batter and thankfully no more issues. I followed your other vid and liked as well. Big thanks guys. Save me a couple hundred or more easily. Much love from Texas

[@Bighawaiian99]

Great video sir !! I had to disconnect the battery and replace both parts the thermostat and temperature sensor and it is running back to normal!! Thanks 😎🤙🏽

[@TheBrothersWorkshop]

Glad to hear it! 🙌

[@rauldiaz9478]

Is it bad if I drive like this for a few days till I can get it fixed ?

[@TheBrothersWorkshop]

Hey Raul, honestly I don't know how bad it is to drive while truck is doing this. If it makes you feel better I drove for a few days before I could fix it.

[@ericcottey87]

Your videos have given me hope for doing my own work on my 2016 lol I have no confidence in myself in tearing into anything like this but I’m having the same problem with my truck as soon as it hit 100k so I’m gonna try the sensor tomorrow and then the thermostat if that doesn’t work. Thanks for the videos!!!

[@TheBrothersWorkshop]

Eric, all you need is a can do attitude. You got this bro! We felt the same way at first, and that's totally normal.

[@ericcottey87]

Well I replaced both the sensor and the thermostat and it still didn’t fix the problem. Temp gauge still doesn’t register and as soon as I turn the key forward the fans immediately kick on high even after sitting all night. Not sure what to do at this point

[@ericcottey87]

Well as I started reading comments on here I tried the battery disconnect like others were doing and that fixed the problem so everything’s good!

[@shawnlee9665]

This problem just happened to my wife and i tonight. All the symptoms. Great video. Now i know how to fix it!

[@TheBrothersWorkshop]

Good luck! It's an easy fix.

[@jamesowens5389]

Video was very helpful, this happened to me recently and the information helped alot. Thank you

[@TheBrothersWorkshop]

Glad it helped!

[@TheBrothersWorkshop]

If you changed the sensor and this issue still occurs, you will need to change the thermostat. I've linked two videos for you below. The first is a trouble shooting video. The second shows in detail how to replace the thermostat. 👇 Troubleshooting 👇 kzbin.info/www/bejne/rZbHapiQrbWqqbM Thermostat Replacement 👇 kzbin.info/www/bejne/jaevqnWDbat7mq8

[@dominicscine3311]

Dude...that was it! Sweet. Tell me...something else weird happened though....my A/C started working again. Could disconnecting the battery reset something so that now my A/C works again?

[@DylanCrewell]

All of this was just awesome! Thank you so much for this video.

[@LvLyNaKa7]

Thank you for this video! It really helped us save on labor $$. Thanks to everyone who helped with the comments too! Appreciate you all!

[@TheBrothersWorkshop]

Glad we could help. If you have any problems in the future, here is our troubleshooting video: kzbin.info/www/bejne/rZbHapiQrbWqqbM

[@lethirreknight385]

My fan currently having the same issue With my truck. Thanks for the diagnosis. I first thought it was the relay sticking but I noticed it doesn’t have a relay. Even though it shows a place on the electrical fuse block for it. But I’ll check that sensor out first. Good looking out.

[@TheBrothersWorkshop]

If you still have problems, check out our troubleshooting video: kzbin.info/www/bejne/rZbHapiQrbWqqbM

[@oldkuwait]

Had this problem with my 2017 yukon Thanks for tip 1-iWill replace the sensor. 2- then disconnected-the negative battery wire. Thankyou very much sir 👍🏻.

[@TheBrothersWorkshop]

It should work great after you fix it. Also, you don't need to use Teflon tape. Sometimes it will cause you to loose a ground and the issue will continue.

[@oldkuwait]

@@TheBrothersWorkshop I changed the thermostat and the sensor Everything good naw. Tanks 👍🏻👍🏻👍🏻🌺

[@TheBrothersWorkshop]

Glad to hear it! 🙌

[@eduardocabral700]

Worked with my Tahoe 2016, thank you! 😃 , tip… you need to drive couple minutes until the computer read the new sensor and you good to go ;) ( because at first I changed it on my driveway and the problem hasn’t change , after 10 minutes driving, worked hehe 🙏🏻)

[@TheBrothersWorkshop]

Glad to hear we could help you out Eduardo. We have heard that helps. Ours on the other hand worked right away. Just goes to show you every truck is slightly different.

[@joeycastellanos18]

Thank you for the video. I would recommend a disconnect and reconnect of battery before you change the sensor though. I did this and it never did it again.

[@TheBrothersWorkshop]

We went over that in the follow up video linked here: kzbin.info/www/bejne/rZbHapiQrbWqqbM

[@joeycastellanos18]

@The Brothers Workshop ah ok! Thank you. I did not see this yet! Still great content! I always prefer to try to fix something myself, so videos on tips and instructional are always helpful!

[@TheBrothersWorkshop]

I agree with you. Fixing things myself is rewarding. It feels great knowing you can do something hard, by yourself.

[@SD_13_]

Great video I just replaced mine. I was reading thru the comments and saw the tip to release pressure prior to pulling the sensor. Tried it but still leaked out I had a mini geyser. Anyway I disconnected the battery and boom 💥 worked like a charm!

[@TheBrothersWorkshop]

Hey Sean! Glad you enjoyed the video. We're stoked that everything worked out for you. If it starts acting up try removing the teflon tape around the sensor. The teflon tape may cause the sensor to miss read. We never had an issue FYI, but some people do.

[@SD_13_]

@@TheBrothersWorkshop thanks I didn’t add any Teflon tape. Mine came with a copper crush washer.

[@SD_13_]

Well it worked last night today fan came back on and I got a P0128. I’ll be changing out thermostat

[@TheBrothersWorkshop]

Good luck!

[@mauriciotallon5129]

Yes very important to disconnect the battery 30 seconds after replacing the sensor to reset the computer. Forgot that part and wondered why it was still running. Thanks.

[@TheBrothersWorkshop]

Yep, we go over that in the follow up video: kzbin.info/www/bejne/rZbHapiQrbWqqbM

[@charlesjustice29]

Thx guys my fan recently started this followed your guidelines and replaced sensor, disconnected battery for 30 seconds and worked like a charm. Saved me a trip to the dealer.

[@TheBrothersWorkshop]

Glad to hear you got it working properly again! Thanks for stopping by and watching the video.

[@randyleonard4126]

Lol,I took the reservoir cap off thinking it would relieve some of the pressure,but coolant shot up about a foot high until I got the new one threaded in🤣😊Problem solved tho with the new temp sensor regarding the fans staying on..2017 sierra 4.3

[@SarahLaughlin]

Thank you so much for putting this video together. I just changed one on a 2016 suburban. So easy following your tutorial.

[@TheBrothersWorkshop]

Thank you very much. I'm glad we could help!

[@paulmorgan6088]

I replaced the thermostat but it still was read the same but now am going disconnect the battery 2mrow see if that works if not I'll replace the sensor as well see if it works.... Thank u for the video.....keep sharing it helps

[@TheBrothersWorkshop]

Good luck with everything. If you have any issues, this is our troubleshooting video: kzbin.info/www/bejne/rZbHapiQrbWqqbM

[@paulmorgan6088]

@@TheBrothersWorkshop thank you

[@paulmorgan6088]

Yes yes yes I got fixed.......thank u for all comments and I learn how to fix cars and trucks from watch ur KZbin channel thank you video help me alot I did all and it came dnw to disconnecting the negative and it reset

[@TheBrothersWorkshop]

Thank you Paul. I'm glad that we could help you out. We're slow to put them out, but we are making more videos to help everyone out. We just did a video explaining how to change your oil in these trucks. Check it out and let me know what you think. (kzbin.info/www/bejne/mpSkgGWAjqyEeLc) Also, if you have any ideas or want to see a video let me know what our next one should be.

[@deetripp6036]

My truck just did what you're talking about. Im going to go pick up one of those sensors and see if that works.

[@TheBrothersWorkshop]

Hello Dee! Hopefully changing the sensor works for you, however if it doesn't I've linked tow videos here for you that will fix the issue. kzbin.info/www/bejne/rZbHapiQrbWqqbM kzbin.info/www/bejne/jaevqnWDbat7mq8

[@thatsallyouneedtoknow7209]

I accidentally shorted my jumper cables together. This made the fan continuously stay on, even for a few minutes after shutting down the motor. I unplugged the negative terminal of the battery, waited a few seconds, then reattached the battery cable. Problem solved…Now resetting the time on the radio…that takes a master mechanic.

[@TheBrothersWorkshop]

Your issue is completely unrelated to the one explained here in the video. I'm glad you figured it out.

[@bradwebb6927]

Couldn’t see this other hint - the a/c will stop working if the system thinks it needs to over-run the coolant system. Arizona based here, very obvious something was off. 😂

[@TheBrothersWorkshop]

We didn't notice that issue due to the cooler temperature here.

[@cooldaddypmg]

Disconnecting the battery worked for me also…cheers to you all

[@TheBrothersWorkshop]

No problem! Glad we could help!!

[@sethchalnick5113]

Thank you! Worked for me, but in case this helps anyone, I had to drive it a few miles for the system to reset to normal.

[@TheBrothersWorkshop]

Glad it helped!

[@brandonthornhill2501]

I’ve done the temp sensor fixed it for 2 weeks and it’s back to it

[@TheBrothersWorkshop]

kzbin.info/www/bejne/rZbHapiQrbWqqbM

[@bennythefitter]

Thanks for the video With 155000 miles I’ll be needing more help I’m sure. I’ve had it since new an it’s been an awesome truck. 27$ plus fluid to top off. Did it under an hour. 👍

[@TheBrothersWorkshop]

Hey! Glad you liked the video. 🤙

[@ElkyBub]

Going to try some of the suggestions. Pulling the (2) 40 amp fuses is getting old quick.

[@TheBrothersWorkshop]

If you follow all three of the videos in our playlist, you will fix this issue. You must watch all three. Make sure you replace the thermostat and the sensor. Disconnect and reconnect the battery. If you skip any of these steps, you will not fix the problem. The playlist is linked here: kzbin.info/aero/PLnPXcXYmgiuvbA7f_Zot4ScG1DJ7QJgO8&si=15fsNB4eWko3Dzp-

[@zildian1983]

This helped me replace mine. She's good as new!

[@TheBrothersWorkshop]

Glad to hear it!!

[@walamus420]

Just changed my sensor out with the help of this video and i can’t thank you enough! My only problem is i broke the clip getting it off…. How serious is that? Is it fine to keep like that or should i ask about fixing it somehow

[@TheBrothersWorkshop]

I'm honestly not sure if breaking the clip is an issue or not. I would definitely keep an eye on it and try to fix it if possible.

[@dagolopez2555]

Thank you. This just happened to my 2015 Silverado last night.

[@cademmo]

Replace the sensor in mine 2 different times even got the code both times the sensor was bad. Then I seen a video about the thermostat. Replaced the thermostat and 💨 no more codes or problems. I can say I was kinda shocked at the price of the thermostat 😂😂.

[@TheBrothersWorkshop]

Hey Joey, we try to make it known that we have both videos, and a troubleshooting video. It's harder than you'd think to drive traction to those videos. Glad you were able to figure it out. Thermostat should have been more than $30....

[@cademmo]

@@TheBrothersWorkshop dang O'Reillys was the only place that had one in stock 54$ 😳😳😳. What ever happened to the 4$ thermostats 😂😂. Everything has to be made of dang plastic now 🤬

[@bricelisenbe9163]

Thank you, you have saved a lot for me and others greatly appreciate your knowledge and kindness to show us all !!

[@TheBrothersWorkshop]

Glad to help!

[@MarkBerger-n6d]

This was very helpful thanks buddy. It did take care of my problem.

[@chrisevans7599]

Had this exact problem on the way home today. Switched this out and seems to have fixed it! Thanks for the video!!

[@sunriseroofing4]

I just switched out minds about five minutes ago the fans are still on high How long does it take to go away thanks in advance

[@TheBrothersWorkshop]

If you are still having issues, we made a trouble shooting video linked here: kzbin.info/www/bejne/rZbHapiQrbWqqbM

[@derekdavidson6738]

I followed this video to diagnose the same issue. I had to loosen the clamp on the air intake and pop it off to reach the sensor. Also, mine was completely cool when I did it and didn't much coolant at all. After starting, it was still on whatever safety mode it was in so I disconnected the battery for a few minutes. Good to go after that.

[@TheBrothersWorkshop]

Awesome!! 🙌

[@gordonlejunie2114]

Hey guy at brothers workshop this is informative but my 2016 did the same thing so I changed the sensor and put it back together and the same thing happened after i installed the sensor. also found the two 40 amp fuses for the fans so I pulled them and fan went out. Well what I ended up doing was disconnect the cables but first remove the key left the cables off for about one minute and reconnected the battery cable and started it and test drove it and the computer reset and I havent had any issues anymore

[@TheBrothersWorkshop]

That's awesome man, but we go over all of that and two other videos that we have. If you have any other issues follow our instructions in the other videos linked in the video description.

[@sttravis]

Great video. Disconnecting both battery cables fixed it for me. Thanks everyone. Crazy

[@TheBrothersWorkshop]

No problem! Check out our troubleshooting video if you need anything else: kzbin.info/www/bejne/rZbHapiQrbWqqbM

[@robertpage2927]

The comment about 160 was important for my customer thanks

[@TheBrothersWorkshop]

What do you mean by that?

[@robertpage2927]

Temp.stuck on 160 degrees while fans running all the time his truck was intermittent when problem happening

[@TheBrothersWorkshop]

Do you work for a GM dealership?

[@bakerjrjw]

I understand how that could be a problem. But my 2015 Chevy Silverado has a different problem. Why does my 2015 Chevy Silverado's cooling and condenser fans continuously cycling on and off?

[@gregjarman7340]

Thanks for the video. That and the comment about disconnecting the Negative terminal, fixed my issue. Thanks very much....

[@TheBrothersWorkshop]

Glad we could help!! 🙌

[@daveytile]

Thanks I took your advice. I did have to clear the codes after

[@koreykilburn5303]

I recon this same would apply to a 2017 Yukon XL 5.3L engine. Since it’s all the same drivetrain. I might have bought a whole new fan assembly for no reason. Off to by a new temp sensor before I do the fan swap.

[@TheBrothersWorkshop]

I would think that it's the same 5.3 motor. We did a video series about this issue because the sensor and thermostat needed to be replaced. Don't worry, it's very easy. I've linked the videos below for you! 👇 1. Temperature Sensor Replacement: kzbin.info/www/bejne/l3vInKaorch2eqs 2. Thermostat Replacement: kzbin.info/www/bejne/jaevqnWDbat7mq8 3. Troubleshooting Video: kzbin.info/www/bejne/rZbHapiQrbWqqbM

[@kimberlyrichardson9639]

replaced this sensor a couple months back fixed the problem, now happening again, could it be the thermostat now?

[@TheBrothersWorkshop]

More than likely the thermostat is your problem. I've linked our troubleshooting video and the thermostat replacement video below for you. kzbin.info/www/bejne/rZbHapiQrbWqqbM kzbin.info/www/bejne/jaevqnWDbat7mq8

[@randomstuffwithjoe]

I think this is what is happening with my '17 Silverado now. The fan is staying on.. and the temp needle is stuck at 160. And tonight.. it threw an engine light as I was on my way to drop it at the mechanics. I suspect its the sensor. Thx for the video.

[@TheBrothersWorkshop]

It sounds like it's the sensor and the thermostat. Please watch all three of our videos on this topic and you'll be able to fix it yourself!

[@randomstuffwithjoe]

@@TheBrothersWorkshop You're exactly right. The mechanic had to replace both the sensor and the thermostat. It's all fixed now. Cheers...

[@derekroyer5908]

P0117 and P0119. Tried new coolant sensor, fixed it for an afternoon, next day fan on high again, found someone had a cavalier that had a bad A/C pressure sensor that told the computer that the pressure was high causing the fan to turn on high. So, went to find they put the sensor by the compressor by the tire wheel well, (great place up in the north with salt, can’t leave a good thing alone and leave up above). While truck was running and fan on high I unplugged the sensor, nothing happened, plugged back in and the fan calmed down to a normal speed. Took back apart and installed some dielectric grease on the connector. So far a week later still good. GM connectors suck. Had problems with my Malibu brake light connectors by dash before I sold it.

[@TheBrothersWorkshop]

Hey Derek, that's a very interesting solution. Also one I've never heard of. Aso for the issue we are specifically talking about, no codes were thrown and none stored in the computer. Sounds to me that you may have had a different issue all together. Two things I've been telling people to do are, replaced the thermostat and disconnect the battery for ten minutes to reset the trucks computer. That will allow your computer to reset and read the new parts correctly. Keep us posted on your fix, and if it solves the issue!

[@mikerobbins9524]

Very helpful I replaced all part ! Then I watched all over your video ! But was already pissed thank for battery disconnect! 😄 haha

[@TheBrothersWorkshop]

Well, you fixed it! Haha g Glad it worked! 🤙

[@ChristopherSmith-tl4ok]

Thanks for the video. I was ready to replace the thermostat when I saw your video and changed the sensor first. Worked like a charm!

[@TheBrothersWorkshop]

Thanks for watching Christopher! Glad it helped out. If it stops for some reason remove the teflon tape.

[@TheBrothersWorkshop]

If you do need to change your thermostat we have a video on how to, linked here: kzbin.info/www/bejne/jaevqnWDbat7mq8

[@CarolFlytheAuthor]

Thank you so much!! Mine just started doing this randomly so I know what to do now.

[@TheBrothersWorkshop]

If you have any questions here's our playlist has several videos on this. kzbin.info/aero/PLnPXcXYmgiuvbA7f_Zot4ScG1DJ7QJgO8

[@bradburyking6376]

It’s been said, but BE SURE TO DISCONNECT BATTERY after sensor replacement (then hook it right back up) so that the vehicle resets and starts to read the new temp sensor!!! Good luck

[@TheBrothersWorkshop]

It's definitely been said before: kzbin.info/www/bejne/rZbHapiQrbWqqbM

[@Scottypowpow]

I had this problem changed out the coolant thermostat and it fixed it didn’t need the sensor or fan module

[@TheBrothersWorkshop]

If you don't replace all of the parts, the issue with return in time.

[@Scottypowpow]

@@TheBrothersWorkshop mine was fine until the day I traded it in for a new truck after that so idk how much longer it lasted after that

[@realvideo337]

I have 2014 Silverado , changed my cooling temperature sensor and it worked 👍...thank you 💯💯

[@TheBrothersWorkshop]

Glad we could help! 🙌

[@ErickEly]

Yo - this worked for me. 2015 Yukon XL SLT w/ 5.3 V8. 103k odo. When I woke up, it was working. When I drove home, the fan was on full blast the whole time.

[@TheBrothersWorkshop]

Glad we could help!

[@mafirearmsafety]

is there a second sensor other than the coolant sensor, a engine temperature sensor? On most vehicles there is, I can’t locate the second sensor. Any ideas?