Thermostat & Coolant temperature sensor replacement: Yukon, Tahoe, Sierra, Silverado, Escalade GM

[@DewayneBurgess]

At 135,000 my 2016 Tahoe started the same stuff as everyone else here has described. No temp indication and fan running after shutdown. Dealership service guys diagnosed it as a thermostat and wanted a mere $540 to replace it. I thought that sounded pretty high, so I hunted and found your channel. Following your exceptionally well-done tutorial, I easily replaced both the thermostat and coolant temp sensor for about $90 worth of parts. God bless you! I am the furthest thing from a mechanic. I always said that, if I was smart enough to be a mechanic, I wouldn't have to be a pilot!

[@FloridaBackyardFishing]

Exact same thing with me in a 2015 Tahoe 130,400 miles

[@irvingarcia7916]

same i have 2017 just did it my self saved alot of $$

[@l8dr8co90]

@@irvingarcia7916same. 2017 here too. Great video

[@dylanhein8370]

In case anyone else is wondering about torque specs: According to my Haynes manual the torque specs are 89 in-lbs for the thermostat housing bolts (unless you have a 6.0L engine, then it's 132 in-lbs) and 15 ft-lbs for the engine coolant temperature sensor (all engines). Hope this helps someone. Thanks for the video!

[@clemsonphi683]

This video just saved me over $700 and kept me from having to take a day off work to get my car serviced. I am far from a mechanic, but the details in this video made it super easy to follow. I was able to get everything I needed (including the correct type of ratchet and sockets) for around $70 at the auto parts store. Great video!

[@jumptiger34]

Ditto on all the praise. $90 + 1.5 hours and the fan issue is resolved! Thank you for putting this video together!

[@twintyme]

Let me tell you! I’m an ok at home mechanic.. I watched this video last night when I went to bed because my 2018 Tahoe was doing the exact same thing last night coming home. I went ahead and changed out both the sensor and the thermostat.. your video made my life easy this morning! Thank you! Both changed out before the ballgames started! Thank you!

[@maneateroftsavo]

This is an absolutely perfect example of a repair tutorial. Hat tip sir!! I wish you were the guy that popped up for every tutorial I look for on youtube.

[@dannyjohnsonsgarage]

Thanks! I appreciate the comment. Here is a playlist for this truck that has just about anything you’d ever need for it Yukon / Tahoe / Suburban / Escalade Owner’s manual Bells & whistles kzbin.info/aero/PLIjr-uSYDZi7J7EQ1ErTn1Yzi6ET_3Ssr

[@NightmareProject]

@@dannyjohnsonsgarage Thanks for the playlist and sharing your knowledge on this vehicle.

[@NightmareProject]

I couldn't agree more with you.

[@maneateroftsavo]

@dannyjohnsonsgarage thank you sir!

[@Wretch-rx2my]

Wow. Changing the oil is about as much as I can handle. But with this well-done step-by-step, I was able to successfully change both the thermostat the coolant temp sensor in my Suburban. You saved me about $700. Thank you!

[@WooPig21]

Wife got home and fan was running when she turned her 16’ Yukon off, googled it and this was the first and only video I needed to watch! Fixed it immediately! Thanks for the video!

[@LuisSanchez-n8b5x]

Replaced the sensor and 2 days later did the same thing then changed thermostat and it working good now Thank you!

[@a4istic]

I had the same problem and tried only replacing the coolant temperature sensor. Two weeks later the fans were running hard and the temp gage was zeroed out again. Got a check engine light this time so I decided to try changing the thermostat. So far after doing that I have had no problems (fingers crossed). Thank you for post such a great video! 😊

[@dennisnichols8036]

Me too, did it end up working long term?

[@christycastillo2736]

Yeah im wondering if my thermostat is bad bc we keep changing our sensor and it's ok for days- few months but goes out again! Thanks

[@AndreRobichaux]

Super easy to fix...1 hour! Changed both the temp sensor and thermostat. Temp running @ 210 where suppose to be and fans not running after engine off. I suspect was the sensor (IDK) but changed out both while doing this. Thanks for the expert advice.

[@jeromewilliams7758]

I just replaced thermostat and coolant temp sensor with the help of your video thanks my mechanic wanted $390.00 to do just the thermostat parts cost me $50.00 Saved a lot of money thanks again keep posting great videos

[@michaeldelgado37]

Thank you! I went to Oreily's and bought the Coolant Temp. Sensor for $15, and AC is blowing cold with no more issues with the motor fan.

[@alirizvi3235]

I had the same issue. I changed the temperature sensor and it worked like a charm! - 2015 Suburban - 265,xxx miles - CEL was on: P0118, P0128 - The fans would stay on with the car on and off. - A/C was not turning on I started searching away and saw your video! Everything was spot on! Big thank you!!

[@dannyjohnsonsgarage]

Keep the thermostat in mind for the future if it shows cold when it’s hot and fans run

[@alirizvi3235]

@@dannyjohnsonsgarage that’s next on the list. Thank you for the heads up! I just wanted to get back on the road ASAP. I won’t take that risk of the thermostat failing

[@kylesport1238]

My 2016 Tahoe had the same symptoms as your Denali. Bought a new temperature coolant sensor and replaced it as instructed in your detailed video. Turned the car on and was still experiencing the same issue and the check engine light was now on. Watched a bunch of videos and in a last ditch effort before taking it to the shop, I disconnected the battery for 10 minutes, cranked it again and the issue is now fixed! I wish I had disconnected the battery to begin with! Thanks for the video and saving me $$$

[@dannyjohnsonsgarage]

Yeah, step 1 in the video is disconnecting the battery, first because it resets the system and second to make sure you don’t short anything out

[@kylesport1238]

My mistake was thinking you only disconnected the battery because the fan was running. Didn’t realize it was necessary to reset the system. Thanks again for the vid!

[@mattbradey9303]

Hey did it ever happen again after you disconnected battery? I replaced thermostat and sensory mine went away for awhile but now came back

[@Fgatica12]

At 140000 miles my tahoe started doing this. Thise video saved me alot of money. Thank you!

[@therealpeterburke]

Had this happen today on my 2015 Suburban. No check engine light, but all the same symptoms, on a cold and rainy day, so clearly not overheating. Heat was still working, but weak. At 177k miles, it is time to do the replacement of sensor and thermostat anyway. GM parts prices for this and the simplicity of the job are good news.

[@carlosmad2357]

Great video! I called a place called big brand tire and service and asked them how much does it cost to change the thermostat and sensor. They wanted to charge $700 for parts and labor. I ordered the AC Delco thermostat for $50 and the AC Delco sensor for $20. I replaced them myself thanks to your video. Thank you!

[@dannyjohnsonsgarage]

That’s awesome. Great work. I’m glad the channel is helping people save money ✌🏼

[@RangerBuzz]

My fan on my 2015 Yukon XL just started doing the same thing with continuously running. Your video helped me diagnose the cause quickly. On my vehicle a box ended wrench had plenty of room and worked just fine to remove and replace the sensor. Just wanted to put that out there since all three of my Craftsman sets don’t come with a 19mm deep socket but my wrench sets do have 19mm.

[@stephenhenderson4174]

I don’t comment, but I have to on this one. Your video saved me a ton of money and walked me through how to successfully change out these parts. The car works and the wife is happy again. Thank you!

[@Palmer225]

This is the most detailed and informative videos I’ve seen on this common GM ECT sensor and thermostat replacement. Thank you!

[@patrickbourgeois6203]

Dude thanks so much for this video. Family and I were driving last night and I thought I heard something- was the engine fans kick on full blast. I saw the temperature gauge read ice cold and knew that wasn’t right bc we were driving for a while already. Immediately thought how I’d have to schedule a mechanic to look at it. After a quick search on you tube found your video. Bought the temperature sensor immediately from local oreillys and will be swapping this morning. Thanks a lot man! I am confident your video provided a solution!

[@dannyjohnsonsgarage]

I’m glad you found the video. If it continues it may be the thermostat you also saw in the video as it can stick open and over-cool the engine. You might want to look into getting a thermostat to have on hand. Great job fixing it yourself and saving money!

[@patrickbourgeois6203]

@@dannyjohnsonsgarage hey man curious what you think about this. I swapped the the temperature sensor and then just started the vehicle (cold hadn’t started it since last night). Well after starting the vehicle immediately the fan kicked on. Even after installing new temp sensor. I turned vehicle off and as I type this message the fan is still running with vehicle off, I suspect it’ll run a few mins then turn off. I don’t have and haven’t had any check engine lights. You think just the thermostat could still be the issue? Seems like maybe some other electrical problem. Thoughts?

[@welitonsantos5595]

@@patrickbourgeois6203I’m having the same issue after replacing the sensor. It’s just happens sporadically and the fan stays on while the car is on and some times it goes back to normal. I just watched this video and ordered the thermostat as well, hopefully it will solve the problem.

[@endyy3]

@@welitonsantos5595doing the same! i’m going to get the thermostat tomorrow morning i’ll update you or lol you update me? everything good?

[@blakeguidry4040]

Thanks for a great video! With your thoroughness and detail this was simple. Saved $400 in labor at the dealership!

[@JayPearson]

Just piling on with the thanks. I was able to replace both and do the upper hose and new clamps. I'm a 2015 at 99,500 and plan to keep her for a while.

[@rudejude9725]

Ty this helped tremendously I just put a ton of money into my wife’s Denali and the last thing I wanted to do is bring it back to the shop . Shame all this happens the minute it hits 100k miles it’s a really nice truck

[@lashun1053]

Thank you so much. Your video was so detail with good visual. My 2014 Chevrolet Silverado fan was running when the truck was off. I went to Auto Zone to check the code because my check engine light was on. I replaced my thermostat by watching your video. It saved me money before Christmas holidays.

[@dannyjohnsonsgarage]

Glad it helped! Feel free to see my playlist of other repairs for this Truck. Yukon / Tahoe / Suburban / Escalade Owner’s manual Bells & whistles kzbin.info/aero/PLIjr-uSYDZi7J7EQ1ErTn1Yzi6ET_3Ssr

[@souljah8480]

@dannyjohnsonsgarage Hi Danny, Thanks for all your videos they have helped me tremendously! With that being said, I have a 2015 yukon denali xl 4x4, and the vehicle is making a vibration "shutter sound" and seems to be under the vehicle. If I had to guess, it seems to be the transfer case? Everything still operates normal, but the sound is loud and annoying. Have you ran into anything like this? Thank you for your help! Justin

[@seankeliher3996]

Thank you for this video. My Silverado was experiencing the same fan issue. The temp sensor and thermostat resolved the issue. Your step by step instructions made the repair super easy. Thanks again. Cheers,

[@JayWms2035]

Thank you for this instructional video. Had the same scenario as you, wife gets home with the fan running full blast. Was able to get a part quickly and replace the sensor. I didn't initially disconnect the negative battery cable because the fan eventually shut off after about 10 minutes or so. After I replaced the sensor and started her vehicle, the fan started running full blast again as it was before. I almost panicked, but turned the truck off and disconnected the battery. Went inside to let the vehicle be by itself for a 10 or so minutes. And when I reconnected the battery, it was good to go. You're probably suppose to disconnect the battery cable anytime you're rooting around in the engine bay, but I was in a hurry and skipped that step. Anyway, it worked out. And one more thing, being the butter fingers that I apparently am, I dropped the little white clip holder down onto the under engine shield which I had to take partially off to fetch the clip. No big deal, but it was an annoying extra 20 minutes to the job. So word to the wise, hang on to that thing when you remove it. Thanks again.

[@dannyjohnsonsgarage]

Correct. You want to disconnect the negative terminal when working on anything so you don’t short anything out, and in this case it also resets the check engine light and code so without disconnecting it, it will still think it has a problem

[@marlonolivares70]

Thank you so much!! You saved me about 1500 bucks!! Your video was so comprehensive and clear. Gonna be coming back for more repairs!! Poor Len was fixed and it took be about 45 min. I only changed the sensor not the thermostat. Thank you thank you!!

[@michaeleddinger1068]

Hey Danny, Thanks for the video you saved me a bunch of $$. This is a well made video with great instructions and great close ups so you can see exactly how to replace the parts. Some of the other videos that address Thermostat and Sensor replacement are no where close to the quality of this instructional video. Great job!!! I was able to replace both the thermostat and sensor on my 2016 Chevy Tahoe LT 4X4. Thanks again!!!

[@libbybrooks4623]

I really appreciated this video! Your description of of the symptoms matched the problems of my 2018 suburban perfectly, and the step by step instructions saved us so much time and money. Thanks!

[@OddballAZ]

Thanks for the great video! I replaced just the temp sensor and it fixed the problem for a few months but then the problem came back. I'd reset the system but pulling the negative battery and letting it reset but the problem would always come back after a week or so. I replaced the thermostat and that fixed it!

[@dannyjohnsonsgarage]

Yes, I changed both at the same time but many others have told me the thermostat can be the main culprit. I’ve added it to the video description. Thanks for your feedback and I’m glad you got it fixed!

[@mattseabolt1573]

Thank you sir!! Exactly the fix I was looking for! Same situation- wife comes home, “The car fan won’t turn off!!”.

[@juliocarreon7419]

Amazing video and detailed instructions. I replaced my temperature sensor and after one drive the fans came back on. I am now going to replace my thermostat and hopefully that will fix my problem. Thank you!

[@Wedriveyoufly]

Did that work?

[@4Runner21]

07 Escalade “ENGINE HOT AC OFF” message. Replacing this sensor resolved the issue! Thank you for the Video! Ty!

[@seancarney2711]

Thanks so much for tutorial. Made me feel confident I could change it after watching your video a couple times. The only hiccup I had was white safety clip broke when I removed, but I was able to salvage it. So far so good!!

[@realdoc2]

This video could not have been made any better, wow. This just happened to me on a Saturday night, and youtube is saving my ass once again! Well done.

[@sandiougo]

Possibly the most helpful auto repair video I've seen

[@greenebuff76]

Worked like a charm. The special clip. Helpful. Bought a deeper socket. All good to go now. Excellent walk through.

[@Archgr8]

Excellent video. Thank you. If you undo the two bolts for the coolant reservoir you can then lower it below the thermostat and coolant temp sensor then the coolant will not leak.

[@rubenm9]

This worked on my 2015 Tahoe! Great video! I saved myself a ton of money! **Note, my Tahoe was not showing a check engine light and this still worked.**. Thanks for the video!

[@emdgmd]

Thank you for posting this!!! My son and I changed the thermostat and the headlights in the same day thanks to two of your videos. Thank you so much.

[@JohnTheRealtor]

Man! Thank you so much for this video. By far the BEST explanation on a vehicle. I’m not well versed in cars and I was able to do everything perfectly with your instructions. Thank you!!!

[@Joshua-uc2xu]

BEST VIDEO INSTRUCTIONS EVER!! GREAT JOB!! STILL SAVING PPL $100s EASY FIX BECAUSE OF YOU!! BIG THANKS!!!! NEW SUBSCRIBER!!!

[@scottnelson1423]

Just had this happen this weekend. Saw several videos but yours was the most easy step by step that I found. Thank you.

[@scooty1101]

Ha mine too ...freaked me out . After research I changed the sensor and the gauge came up to maybe 1/3 of the gauge so I changed the theromastat and everything back to normal... talked to an ase mechanic and he said just change both ...one can cause the other to fail .

[@ptt3975]

Great video! Air silencers are for people who hate to hear the sound of anything good happening.

[@alecxixfernandez5212]

At 144,000 it just happen to my 2015 Tahoe . Thank you very very much for the Video 🎉😊

[@1jlbrannon]

Thanks! My Yukon did the same thing for my wife today.... I will fix it tomorrow by following your instructions!!!!

[@dannyjohnsonsgarage]

Unless the thermostat has failed, you may be able to try just the coolant temp sensor. I think it was all I needed but did the old mechanic “might as well do the thermostat while it’s out.” Good luck. 👍🏼

[@1jlbrannon]

@@dannyjohnsonsgarage I just replaced the sensor and not the thermostat. Initially there was no change but I drove the car around the block a few times and now it works fine. Thanks again for your help.

[@AndreRobichaux]

Exact same problem I have on my 2015 Chevy Silverado. Thanks for the excellent video and explanation! Thanks

[@RobertBilicki]

Thanks David - Your instructions were very through. I was able to perform the Sensor without any anxiety. Cheers. Bob

[@eighty3boxchevy]

This just happened to me a few hours ago. Came straight to KZbin and found your video. Thank you

[@sbov6085]

same here, going to change out tomorrow

[@mvcbproductions8788]

Grateful for this video while in a Trip to New York from Florida car sensor did the same thing pulled this video and fixed real quick in front of an autozone ! Appreciate men 🙏🏼

[@robertkanjian4661]

Bravo. Extremely well done. Worked perfectly. Helped me teach my son lessons of life as well. Thank you for making the video so easily to understand.

[@jarronmciver2199]

cleanest and most clear video I have found on this subject.. earned a new subscriber.. thank you for the effort you put in for clear images and excellent descriptions.

[@randallgardner8999]

Thank you for this video. My Silverado V8. 1500 started experiencing this last night and I’m now confident I can tackle this repair after your very well produced video. Do you know if I’ll have to clear any error codes to get the A/C to start operating again? I’ve read and seen videos that this condition disables the AC from working (and mine stopped working at the exact same time the temp gauge went to zero and the fan would continuously run after shut off). Thanks for all the helpful tips in the video. The best I’ve watched on this specific topic. And a Happy New Year.

[@jameswatkins7840]

Thanks to this fantastic video, I changed the sensor in 5 mins! Didn't fix the issue though. Changed the thermostat in 20 mins. Still didn't fix it. Any other known causes for the fan to continue to run on full blast even when tahoe is turned off? Check engine light did not come on. Thank you for this video. Perfect step by step guide!

[@jameswatkins7840]

So it seems that I did not test drive it long enough after changing the parts. I guess it needed a good 15 minute drive to work through the system and the temperature came back up and the fan turned off. Thanks again for the video. Saved me a ton of time and money!

[@dannyjohnsonsgarage]

What temperature is showing? If it’s still at 0 (shows 160) when you’ve been driving for awhile and it should be warmed up, it still has something to do with the temp sensor (or the wiring on the car side). Other things I checked were the fan relay. A relay is like a switch, so if it sticks on it will continue to power the fan. If the car is, indeed overheating, it may keep the fan on.

[@jameswatkins7840]

@@dannyjohnsonsgarage Thank you for the quick reply. Looks like it's all good for now. The relay was going to be my next step. Thanks again for the awesome channel

[@richardpkarre9557]

Same problem no check engine light, it will run the fan on a cold engine right after it is started

[@dailyrevs1320]

2016 Escalade literally took a poop today. Thank God you uploaded this video lol Thank you

[@orodiguez]

Did you changed the sensor and the thermostat? Did that stopped the fan being so loud and after you turned off the vehicle?

[@dailyrevs1320]

@@orodiguez yeah. It could of been just one of the two but I thought I’d do both while I was at it. And yeah it fixed the issue

[@orodiguez]

@@dailyrevs1320 awesome! Thank you for replying back. Im hoping it will fix the issue on mine aswell.

[@MuscleMustang07]

having the fan issue now. looks like the thermostat and housing may be backordered now so imma try just the coolant temp sensor.

[@rafaelaguilar5967]

you did a superb job in showing and explaining everything related to this job making it look easy,

[@henryagarrat9829]

Like everyone said you made it a breeze thank you although once I removed the thermastat I just went ahead to the sensor before installing the thermastat

[@antwonemsweller1562]

Thank you so much!! Your instructions were clear and concise. I fixed the problem in no time and you saved me a ton on the labor.

[@accessfinancialgroup9898]

Thank you for this really clear video! 2015 Tahoe. Installed new temperature sensor and problem solved

[@dannyjohnsonsgarage]

If it continues, the gauge may be really reading cold, so it would be the thermostat most likely. Just fyi for the future.

[@stevetrenholm9025]

Our Escalade is having the same issue. Excellent video!

[@jamesbartram1706]

I just found your channel and I'm having the same problem with my wife's tahoe I'm going to do this repair tomorrow morning. Your videos are so well produced and the way you explain the steps assures me I'm capable of doing it! Can you in the near future do a video on the Yukon of a transmission fluid change ? I'd really appreciate it lol

[@dannyjohnsonsgarage]

Yes. I actually have one already. It’s for the 8 speed 8l90e on this same vehicle kzbin.info/www/bejne/eKbCmqZ6h8lsoqs

[@markjenks2265]

Help Great video. My issue persists. Same symptoms. Fan stays on no temp reading replaced coolant temp sensor and thermostat. Any ideas. Thx

[@markjenks2265]

Follow up. Disconnected the neg post. Waited re connect all working great. Thx

[@davidtaylor2869]

Used your video and got my Tahoe back right, thanks 🙏🏾

[@jasonlear1741]

This video is amazing. Follow up question. I changed just the temperature sensor, it worked for a couple weeks but the fan is now coming back on. Assume I probably need to swap out the thermostat as well. I’ll give that a try this week and see if it solves it. Thank you!

[@dannyjohnsonsgarage]

Yes, most likely the thermostat if it’s still a problem

[@jasonlear1741]

@@dannyjohnsonsgarage Thank you!

[@lalvare1]

You saved me thousands of dollars. Thank you sir.

[@diondragray9991]

Thanks, swapped the sensor out in less than ten minutes. Thanks for the video.

[@dannyjohnsonsgarage]

Glad it helped

[@jimmydeansr.4317]

This video just saved me so much time and money. You're the best!!!

[@frenchie921]

you the man thanks. my 2016 Yukon started with the fan staying on

[@bukidman83]

Excellent video! Very well explained and easy to understand. Fantastic camera work as well. Thank you for posting this!

[@enjoylivinginhawaii]

Very helpful - many thanks for providing this info in such clear and detailed manner. But 93k view? Chevy sure don't build like they used to.

[@Mathewcortez72]

Hello I have the same issue I did not replace the coolant sensor but I will my question is after I changed the thermostat my ac was not working it did not blow out cold air just warm what course cause this thank you in advance any help would be appreciated

[@dannyjohnsonsgarage]

Did you disconnect the battery in the beginning? If not it may have blown a fuse for the a/c

[@shawnconnolly6572]

I think it's the HVAC Control Panel Buttons sticking and causing a short. I've done everything else at this point and problem still exists.

[@andrewbrooks737]

You are a lifesaver. Thank you so much for making this video

[@3rdgrade390]

Danny, I need you expert tootlage on this issue. I have the same Denali as you minus the shade of white. We bought it used four years ago and had three trouble free years until last year. Swapped the air ride for shock and struts, had to replace the faulty ac condenser and get all fluids flushed at the same time plus tranny service. Just two months ago I was taking the kids to school and the dash lit up like a Christmas tree and it went way down on power while the gauges danced around. First trip to the mechanic which was a different one from the suspension one cause they were questionable to find after the fact. So first trip, they “check and clean” the connection of the battery cable from the vehicle to the battery. The one under the dash was good and the one to the frame was removed so they could scrape off the paint on the frame so the connection was metal to metal. Not even a mile from the shop and BOOM, same issue. I go back cause now the fan it on loud and long just like yours in this video. I watched your video and told them to check the Temp sensor and they said, oh no it’s the Thermostat cause we see then all the time. They do not replace the Temp sensor. New to me but whatever, so I go home and next morning, BOOM it’s Christmas morning. Now third trip in a week and they say, well we are going to change the cable cause 99% of the time that fixes the issue. Would have been nice to do that first before the other two useless trips. Two months go by and yesterday my transmission won’t shit out of first or second. I go to O’Reilly’s to scan and it’s a Transmission control module issue along with a computer not communicating code. When I get back in, the CEL went away and it drives like normal. I called a shop that O’Reilly recommended quote me $980 plus tax. Tranny service, gasket, fluid and a new harness which contains the transmission control module plus 4.8 hours labor at $150 per. Basically, the ECM is the main issue right , cause today I was getting every light, dash dancing tranny not shifting but not limp mode. My wife and I want to punt this thing but feel bad for the next owner if we don’t get it fixed for good. It is still in great condition, just paid $800 for brake and front rotors a couple months ago and it has just under 105k on the clock. Should we take the $1k and put it toward getting a new or refurbished ECM installed? I love your videos and it was one of the reasons I bought our Denali cause I found your channel. Sorry the message was long but I wanted you to have the whole story. If you get the end and can reply with your advice up I would appreciate it greatly. I just have not found anyone honest in the automotive world to help me. Thanks Danny.

[@dannyjohnsonsgarage]

It does sound like something as simple as a bad ground for the ecm , or possibly a bad harness. As for the temp sensor, you will know if it reads zero (looks like 160) when it’s warm. It should be 210 degrees when warmed up. A friend of mine had similar issues and it wouldn’t shift and his was just a ground for ecm. Usually if something is bad that part fails (like my temp sensor for the transmission). If multiple things start wigging out, it can be a ground for all of them. I do have a harness video for the transmission, and if yours is also the 8 speed you’ll want to watch the video to see which transmission fluid to use and also I cover the different part numbers that allow you to simply change the bottom part of the harness Vs the entire harness, which will save you from dropping the valve body. If you believe it’s a sensor on the harness, you can easily change it yourself for 10% of what they are charging you. It’s hard because there are no guarantees, and the flush could have hurt the transmission. Changing the fluid out is a more gentle solution in the future kzbin.info/www/bejne/hqmklotsmb-VeaM

[@dannyjohnsonsgarage]

This might be helpful as well kzbin.info/www/bejne/gGTGppaHoaiAn80

[@manuelromo4485]

Hello, after replacing the thermostat and the sensor, the fan is still on any suggestions?

[@dannyjohnsonsgarage]

Did you disconnect the black battery cable to reset the system?

[@craigespy415]

Thanks for this posting. The explanation was thorough and easy to follow. Saved me $$$. Thanks a lot.

[@SureTexan]

1) I wish every video was this good. Well done sir! 2) while doing this repair, I lost the white clip that snaps down on the connector going into the temperature sensor (the one he uses pliers on effectively). Dealership wants $60 for the whole connector. Anyone know where I can get just the white clip?

[@dannyjohnsonsgarage]

Sorry, I’m not sure where it would be for sale otherwise. You might be able to zip tie the plug to the sensor

[@uneedmorepeople]

It's the thermostat guys the sensor is fine.

[@williamjones1030]

How bad is it that a little piece of that lock on top of the sensor connector broke and fell down in there?

[@dannyjohnsonsgarage]

Mine broke too, but I was able to put it on. Did a piece fall into the coolant or just into the engine bay?

[@lornamcmillian8194]

Thank you so much for this video! If the temp guard is still reading low, any suggestions as to what it might be?

[@dannyjohnsonsgarage]

Is it still right at 160 or just cooler than normal? Did you replace the thermostat and the temperature sensor or just one?

[@rjpless68]

Excellent video very easy to follow made the job super easy thanks

[@dallinbiorn205]

You mentioned adding coolant to the expansion degasser tank and the radiator hose. Are these the only 2 places to add coolant? At 12:55, you mentioned “filling in all 3 of these places”. Do we need to add coolant to the radiator somehow too? Thank you!

[@dannyjohnsonsgarage]

Yes, the radiator is the main concern, so I like to fill it into the hose that leads to the radiator until it comes out the thermostat, and also the degas tank is great as long as levels don’t drop to induce air into the system. It should burp out most of the air that’s left into the degas tank but you don’t want to start with a lot of air. Then running the heater on full blast helps

[@juanrsolis7336]

if I am going to change only the Engine Coolant Temperature sensor, should I still follow the steps to unplug the bigger coolant hose that goes to the radiator? or can I just skip to the part where I replace the Temp sensor?

[@dannyjohnsonsgarage]

I would strongly suggest the thermostat as well. It’s more likely it’s sticking open and changing the sensor will reset the system but it will come on again. If you do just the sensor you can simply talk it off and it will lose some coolant, but don’t do it when the engine is hot. It will spray fluid everywhere that will also be hot

[@juanrsolis7336]

@@dannyjohnsonsgarage will the sensor and thermostat you have listed fit on a 2021 GMC Acadia Denali? i wasn't able to check on amazon if it fits

[@BlindMen-C]

Will the parts in the links fit a 2018 Chevy Tahoe?

[@dannyjohnsonsgarage]

I imagine it would be the same, but it should allow you to check compatibility when buying

[@BlindMen-C]

@ thanks for replying! When I bought the part I was told that it fits! It gets delivered tomorrow! Thanks again!

[@tyspann2004]

11/14/24 I thank you for this video had the same problem, but I only replaced the sensor now. It is doing it again no check engine light this time. I’m going to change the thermostat and see what happens.

[@JohnBarrancoJr]

Thanks so much for this video. This quickly resolved the issue with my wife's Tahoe. If you lose that white clip and the little black piece that slides down into the connector, is this a common part that can be found at a local autopart shop, or do you know of the part number I can order. Mine went flying out during removal...

[@dannyjohnsonsgarage]

I have googled connector clips as others have asked, but I can’t say which one would actually fit. I would look at this, but make sure you verify before buying www.aliexpress.us/item/3256801433531697.html?src=google&src=google&albch=shopping&acnt=708-803-3821&slnk=&plac=&mtctp=&albbt=Google_7_shopping&albagn=888888&isSmbAutoCall=false&needSmbHouyi=false&albcp=20123152476&albag=&trgt=&crea=en3256801433531697&netw=x&device=m&albpg=&albpd=en3256801433531697&gad_source=1&gbraid=0AAAAAD6I-hGw1JLgSjNJEO9SZfMXu9sDG&gclid=Cj0KCQiA35urBhDCARIsAOU7QwmV9_klQBmPjnxXDOB-56hE0u7hweL5mJ4HIZzsqARrZhwxZsqHHOkaAn5wEALw_wcB&gclsrc=aw.ds&aff_fcid=734c623dca6f41a592e4f738eb397870-1701283831720-05611-UneMJZVf&aff_fsk=UneMJZVf&aff_platform=aaf&sk=UneMJZVf&aff_trace_key=734c623dca6f41a592e4f738eb397870-1701283831720-05611-UneMJZVf&terminal_id=648b6281d6eb4cc3b56fc44118d10855&afSmartRedirect=y&gatewayAdapt=glo2usa

[@JohnBarrancoJr]

@@dannyjohnsonsgarage Thank you!!

[@fernandodiaz8788]

Hey man, thanks a lot for sharing this video👍i just finished fixing my sisters GMC and it worked just the way you said! Thanks again💯

[@raymondthomassr5233]

Do you have a video about the AC not working on 2015 suburban LT the blower is not coming on but all the fuses appear to be good

[@dannyjohnsonsgarage]

It could be from low refrigerant, but you’ll want a professional to add it and find a leak. You can try a black light if it already has dye kzbin.info/www/bejne/iZe1g4J8nNONrrcsi=9YYGcZR9iWer_pQf

[@daniagarcia1874]

I have a 2015 Tahoe will the sensor that you have linked work for my truck?

[@dannyjohnsonsgarage]

It says it fits when I put it in to confirm

[@97datcher]

What tires do you have on your Yukon? They look really nice.

[@dannyjohnsonsgarage]

Goodyear wranglers but they are pretty noise and wear quickly. With bad front struts they cupped very quickly and it felt like I was driving on the rumble strips when coming to a stop 2019 AT4 Wheels Yukon Review: Goodyear Wrangler Tires on a GMC DENALI kzbin.info/www/bejne/gJ_Kn6CjYtyLpNk

[@robb5233]

Glad I found this! I replaced the coolant sensor with a Duralast one from Autozone before seeing this video. The problem stopped but then it returned. Could it be the sensor? Maybe I should have gone with the more expensive ACDelco?

[@dannyjohnsonsgarage]

I did the thermostat as well in case it was sticking open and overcooling. It’s hard to say if GM’s default with the fan happens because it’s the sensor or the fact it should not be 160 degrees and turns the fan on in a panic mode no matter what. Mine has been good so far with the GM sensor and I bought it from the dealer for twice what it is in the Amazon link lol

[@robb5233]

@Danny Johnson’s Garage With 140k miles, I might as well switch out the thermostat and get the better sensor. Thank you for this video! I'll be replacing the thermostat tomorrow.

[@andywoods7935]

If this is not fixed immediately, does the fan running drain the battery?

[@dannyjohnsonsgarage]

Yes, it will drain the battery. You can disconnect the black, negative battery cable to turn it off in the mean time.

[@andrewgripper5033]

I did t get a check engine light but mine is doing the same exact thing yours is

[@dannyjohnsonsgarage]

You can start with the sensor, but I’ve had a lot of people say in the end it was also the thermostat.

[@jimmaher8839]

Is there any concern about the coolant getting all over everything?

[@dannyjohnsonsgarage]

You would mainly what to dry any that gets on the belts.

[@carlosv.7970]

I'm trying to stay ahead in servicing my '17Yukon5.3L with 70k miles haven't had that problem yet but it seems so easy it makes me want to get it over with 🙄 I just had my tranny and differentials (4x4) serviced at the dealer I'm now missing $850 off my pockets 😆

[@dallinbiorn205]

Did the job and it went great. My only concern is the blue permatex threadlocker (looks similar to the loctite you used in the video). I put a decent amount on the thermostat bolts and when tightening down noticed that some of the blue was leaking out the edges. I’m worried it could’ve also leaked into the middle of the housing and into the coolant. Is it worth removing and checking in your opinion? Thanks!

[@dannyjohnsonsgarage]

No, it shouldn’t be a problem in my opinion

[@dallinbiorn205]

@@dannyjohnsonsgarage sorry for the late reply about this. I read that threadlocker can make plastic brittle and crack. The thermostat housing is plastic. Do you think the threadlock that leaked onto the housing would cause any damage to the housing over time?

[@faizanhabib5298]

I changed the sensor about a year ago but the fan kicked on again last night. I suspect it’s time to change the thermostat.

[@dannyjohnsonsgarage]

I suppose it depends on the symptoms. Is the vehicle actually running cold or showing zero temperature when it’s warm? It’s very possible. It could also be a fault on the cars harness side and the sensor is good, or the car’s electrical burning up the bad sensor. Did you get a check engine light?

[@esmith836]

Always a great video! And that’s a nice 10mm socket! Still looking for two of mine lol.

[@centralfloridachrysler3766]

Lol! Harbor Freight has a package of nothing but 10Mil sockets! Straight, wobble, extension, regular, etc. They've got em all covered!!