Is your Silverado or Sierra Transmission overheating 2014 and up?
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- เผยแพร่เมื่อ 4 ต.ค. 2024
- Is your 6l80e or newer transmission from GM overheating. These are some tips and an often times over looked culprit. The thermal bypass valve should be replaced when any major service or repair is being done to the transmission because they do go bad.
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I had a friend tell me about this problem on his truck, I had no idea. Then, I started checking on my 2015 Sierra, and it was running between 195 to 204 degrees.. so I bought that kit superior solutions tech,. I paid 35 dollars for it. So today, i changed to transmission fluid, filter, and installed the superior solutions thermal bypass. It works really well. I drove it about 6 or 7 miles, and the temp only got up to 133.
Same situation with a 2016 and same $35 and same 130 range temp. I was concerned that perhaps the 130 degrees (highest I have seen has been 142 on 90 degree day) is it was supposed to open and circulate in the 150 degree range. My truck only has 44K miles so hopefully I changed early enough to save the converter. Seems to be money well spent.
I put the Superior bypass in my 17 Sierra last year. So much better. Every one of these transmissions need to get rid of that thermostat.
Then my converter never locks up until I’m almost overheating. I run at 170s even when towing my camper I don’t go over 190. Only time it heats up is when I’m plowing hard and I’ve gotten it up to 240s 250.
I completely bypassed my valve by buying cooler lines for the 2013 (no valve)
Added a $20 cooler
In the winter towing a trailer i was getting up to 210’
Summer now 90-100 degree weather and my trans stays at 165-170 and no more trans slipping or random shifts
LITERALLY LIFE CHANGING
Thank you for the comment I didn’t mean to remove it. Glad I could help on your 2018 silverado
How do you bypass that valve?
I have 424,000 miles on my 2015 Silverado with the 4.3/6L80. My engine is original but I’m on my third 6L80. I replaced the first one at 125,000 and around 180,000 replaced the second one. The second time I replaced everything, the trans, the tubes, the radiator and I deleted the trans thermostat and added a $400 trans cooler. The rubber hoses in the cooling lines were breaking down and from excessive heat causing more heat. My current 6L80 has nearly 250,000 miles and runs 60-75 degrees Fahrenheit above ambient temperatures. I’ve changed the fluid and filter once and it was impressively clean. I’m due for another fluid and filter change and this time I’m going to change the radiator and cooling tubes again. Not because of any specific issues but because I don’t want to replace another transmission.
Have the same truck with 4.3l LV3. Thermostat bypass done and the themp. still raise up to 95-105°c. Think to put a new cooler maybe change my hoses should be a good thing. Thanks.
Looks like you found the fix. That's incredible on the milage.
Are they upgraded hoses or the normal ones? What about your trans cooler? Is it upgraded or a oem?
They put out a bulletin for a replacement part . Changed mine a month ago. Runs cooler
yes
My transmission fluid temp started to get super hot after my Ac condenser cracked.
GM put out an updated Bypass that is set at about 150 degrees and it is to replace the 194
i have 2014 Silverado 61,000 miles, trans would be steady at 190-95. put this in now 165-75
Ohh wow where and name for that piece .. ? I do have a 2014 Silverado z71 .. today it show to turn engine off .. new oil .. new antifreeze and nothing .. ty
Changed the bypass valve on my 2017 Sierra yesterday. Temperature went from 190 deg. To 145 deg!!!
Thats great to hear!
Our 2014 gmc sierra 1500 (155000 miles) went into limp mode after overheating transmission, we replaced the transmission and its still jumping to 225 with a fan coming on. Found your video and hoping the valve will help us. Just made our 2nd payment on the used vehicle so yikes
Did you ever find the problem?
Hope you fixed it
I had a problem with my 14 Silverado I had to replace the thermostat and censor just to make sure and it’s good on the fan now but it’s ticking and I like the way the transmission has been holding up 125k miles
My truck just got up to 260 was thinking cleanjng the filters and all but going to check this issue also
I bet its the bypass
😭😭😭 this hot transmission came on today an didn't think it be all this
So we just remove that thermo bypass valve ??? Or add a thermo bypass valve. I’m lost. Sorry.
Remove the thermostat.
Sure Cool for the win
Only on the 5.3 not 4.3!
Thats why i’m planning to buy a transmission cooler.
How and where
You can install a house size Trans cooler and it won't help because the trans thermostat will just stay closed until it reaches the set temperature.
Great video BTW
Thanks
Try out the sure-cool bypass drops Trans temp and runs great
There is a few TH-cam videos
I bought/installed the Sure Cool kit and it works great 👍
I would recommend it to anyone with the 6L80E overheating issues
@@Chief6067 what are your temps at? I installed the superior as well and occasionally I will get up to 200°
@@alextrujillo8658
I’m running between 150 to 180 but that’s only in mild outdoor temps so far.
I will post what my temps are this coming summer.
I live in a cooler climate in Idaho but summers can get warm, so that will be the true test.
But so far it’s been great with the lower temps I’m seeing so far.
How many miles do you have on your transmission?
Is it a 6L80?
Yes it’s a 6L80. I have a 2014 4.3 Silverado crew cab. Do you know of any external coolers compatible with the 4.3’s ? I live in CA and yesterday going up for about 45 minutes up a mountain “big bear” it got up to 230 but it dropped back down when I reached the top.
@@alextrujillo8658
Yes…..try looking up the Mishimoto trans cooler, it should be compatible.
230° is mighty hot!!
If you tow, it’s almost a must to put an external cooler on it, or even if you don’t tow and put power adders onto your truck, a cooler is good to have.
I have a 6L80E……..it had 105k miles on it when it gave up the ghost on me.
The best thing you can do if yours starts slipping is to find a reputable rebuilder and rebuild it with all the good parts PLUS a billet torque converter, either double or triple disk……beef it up as much as you can afford.
The torque converters are known failure points, and when they fail, it’s cascades from there……those tiny pieces of clutch material and metal pieces will destroy your trans all over again.
It gets expensive but it’s better to overbuild it with great parts, and get longevity out of it…….it comes at a price like everything else.
But start with a cooler first…..it is the cheapest way first😄😎
Good luck 👍
Great video!
I have a 2014 Silverado 4.3. Is 205 transmission temperature normal in stop and go traffic without towing anything?
Thats pretty normal for these trucks
Can I just run the lines directly into the transmission or will it mess my transmission up without a bypass valve on it?
Any part# for this part?? My transmission is going hot when pulling my trailer empty. But once i load it.. dont get hotter.. weird.. so I'm thinking to change this part.. hopefully improves
Superior Transmission Parts Inc.
STL 010
I seen many video's on trans thermostat but what about fluid type . GM has two, one i believe is semi synthetic other full synthetic. Has anyone tested temp readings using either fluid vs valvoline or amsoil. I would think using different fluid would get different results.
Amsoil Signature Series Fuel Efficient ATF = 🏆
This is going on with my 2018 Silverado. The dealership just replaced the transmission and bypass valve and all the hoses but it is still overheating .. back to the garage tomorrow and hopefully it comes back fixed this time
Very frustrating
Did you ever find the problem?
Up date
Maybe I missed it. But what size engine is the video, and does it matter? I have the 2015 4.3L v6 with overheating. Do they all have the same transmission, and thermal valve?
Superior solutions don’t work for the 4.3!😡
Ia there oem replacement or gotta get a after market one?
So if I were to do the bypass, how would I ensure that the torque converter does lock up appropriately?
My question about this video and that point is this. He’s saying the tourqe converter isn’t (locking up)until 190deg . So what happens when you start your truck in 45deg weather and take off down the road? What am I missing
@@jodycollins1857 I realize you posted this about 2yrs ago but here's what I'm thinking the entire issue is. These transmissions' thermal bypass have too high of a tolerance. In other words they do not open up fast enough. So everyone's transmission temperature runs hot 195-215 F...that's too hot and it causes the torque converter to fail (tear apart) which causes severe damage to the transmission when pieces of metal end up going through the transmission. Thermal bypass too hot >>>>> Damages Torque Converter >>>>>> Destroys Transmission.
By installing the thermal bypass update, either by installing the kit [about $40] or doing the "pill flip" [free], you can keep the transmission fluid cool ... down to about an avg of 150F full time, thus avoiding the temperature to get so hot that it destroys the torque converter.
Design flaw that GM refuses to fix through recall or a real service bulletin. This entire situation has seriously caused me to rethink my want to purchase another Silverado in the future. They know the problem but refuse to correct it.
what do you think would be the best way to bypass
Mine is at 65565 and I got the warning 😢
2015 GMC Sierra 4.3, I’m running up to 190 trans temp, don’t haul any trailers or anything like that, is it necessary to do bypass where it’ll run cooler? Right now it’s winter time. Cause I don’t wanna fry torque converter.
I have a 4.3 Silverado and I installed the surecool on the hwy I average about 160° and in the city stop and go traffic it still gets up to 200° but that’s after a whole days worth of use.
My silverado 2018 lt transmission is overheating goes 278 degrees 😢 only 70k miles. You guys think that if install the bypass it will help.
No check engine light on!
278 Degrees is wayyy too hot...you may have cooked your torque convertor and fried your clutch pack plates.
Get it into a shop STAT...or if you can't do that dump the transmission pan, change out your ATF fluid to Amsoil ATF and replace your trans pan filter with a brand new OEM AC Delco unit. Install a Superior Solutions' STL - 010 trans thermostat kit and hopefully you might be able to save her!! Good luck 🙏
It could certainly help!
I just got a 2017 Silverado 1500 LT and am thinking about dropping the pan on it. Not flushing it but dropping the pan and then topping off the transmission fluid. I also bought the valve bypass. It upshifts really smoothly honestly but it does down shift a bit rough from 2nd to 1st under quick braking. I feel like doing the above mentioned things would helpful since the truck only has 57,000 miles on it. Is it a good idea to do this to stay ahead of the curve?
Updates bro? Just bought a 18 silverado and the trans fluid runs hella hot. Took it for 1hr drive to LA and it went to 235 had to stop asap.
@@Locochon1 I would think the thermostat bypass would be a good 1st step. Mine seldom if ever goes above 145 F unless back a trailer.
@@Locochon1 Before the bypass it would always stay in the mid 190s during regular driving or interstate driving. In super heavy traffic on a warm day in the summer, it would reach 198 to 204 degrees. There is a lot of misinformation about the bypass. It does for the most part keep the fluid much, much cooler. And I believe that's a great thing. But you can still get it up there depending on how hard you are pushing the transmission. It's not like the bypass will keep your fluid at 160 degrees or lower no matter what. If you're pushing the truck really hard (i.e. flooring it, breaking really hard and then flooring it again over and over), it will raise up there. But the biggest advantage is how often it stays below 165 degrees consistently (even in traffic jams on super hot days it hasn't gotten above 180). So the thing is the vast majority of the time my fluid runs 30 or more degrees cooler. As far as the downshifting goes? I can audibly hear it. It doesn't jerk or anything. So I'm guessing that's just a characteristic of this particular transmission. I've noticed all of the 6l80 transmissions I've had have some quark that I don't like. But they all have lasted pretty well so far.
My truck is a 2015 120k miles. It got the trans temp up to 240 and started shifting weird. Do you think this will fix it? Or is it toast ?
Do you fix ?
I have the same issue
Let me know please
It could fix it sounds like its stuck closed
At What Temps would you say it is overheating?
Mine runs 87-90c that's around 190 to 200f. The online world is saying that is overheating.
Mine always ran those numbers from new tho and even after a full rebuild.
250+ is starting to overheat
Anything above 175 is bad.
@@superiortransmissionpartsi5357
Please explain your too hot temp at 175. Besides selling me parts to fix it.
@@tomwoods8678 it's common knowledge in our industry that 165 is the optimal temperature for longevity and Hayden and Long industries have done temp charts to fluid breakdown comparisons. The higher you go in temp the faster the fluid degrades, looses friction modifiers, viscosity stabilizers and critical additives for the longevity of atf to protect the parts inside and allow proper operation. If you did a 2nd cooler in parallel and you are not internally slipping then you may need to add a bigger more efficient cooler etc
cool, I was just wondering. I had a 13 Dmax/Allison, (yea I know different transmission) and read a lot of post thar 200 was normal. Now I have a 14 silverado 1500, used 168k, new to me, and obviously I bought because it's meets my rust requirements here in the Midwest and I know the 5.3 is a good motor. I didn't study before I purchased the make and model and common issues, now I am looking into it and WOW, it's pretty bad.
I didn't know the transmission temp should be around 165, I read a lot of people don't like the 190+ temps so I have already purchased the superior "fix" , I just need to install it, hopefully today.
Anywho, I appreciate your direct answer. That was the ballpark temp I was thinking it should hover around after all the posts I have been reading.
I did a VIN check online to see if all the recalls or updated "things" have been taken care of and supposedly they have, so idk, it may have the update cooler mod already done, I know normally it's running around 190-200 average temp. And my TC shutters a bit. I'm going to do a pan drop today and try to get a full drain and fill complete/with the superior bypass installation. Wish me luck.
I have a GMC sierra 1500 2014 I had 40.000 miles transmission gone bad I don't know if it over heating or that's the problem. What can I do?
Install a Superior Solutions STL - 010 thermostat kit. It will save your GM tranny.
220 not going down
I have the same truck. It's summer and I've never seen the transmission temperature go over 140°. Usually 127°. Anyone know a cuase?
Celsius or Fahrenheit?
Got a brand new transmission in mine not even 3,000 mi on it piece of shit overheated on my way home the other day can you believe it I have never ever ever Chevrolet they're not going to be around much longer people are waking up you can't have a truck just cuz it looks pretty that don't get you to work
Exactly the 2020 and up are much better the 14-18 were awful.
236 temperature I’m truck
Is 196 normal ??
I think this just happened to my truck on the way home. Do you know the part number, and what temperature would damage my transmission? The warning came on transmission hot let engine idle. 2018 silverado 1500 80k miles. Thanks
Hey its the transmission bypass valve. Its a common failure GM has an updated part. It opens at 140 instead of the higher temperatures. It will do exactly as you stated. I would have them check the torque converter also its a common failure around 100k
What is limp mode?
Mine is 2015 z71 runs about 196 up to 201 is that normal 90k miles?
Sounds about right!
Oh man. I’ve brought my truck to 4 places. Is this an easy fix? And any ideas on where you got it?
James watch my second video yes easy to replace note GM just revised the part. To make them run at lower temps!
@@justinh8055 works great 90+ degrees outside rarely goes over 165
The 2014 Chevrolet with the 6 speed tranny has a dip stick the 8 and 10 speeds do not.
This is not a 6 speed tranny
Look in your glove box for the codes
The dip stick was in the video right where it was supposed to be.
Will the dealer bypass it? My trans is skipping and overheating
They will probably put an updated thermal bypass on it unless it has cooked the converter
Stop talking point out where its at..
FLIP THE PILL !!!
Where do I I buy one I have a 2015 chevy Tahoe