2021 Silverado SURE-COOL Transmission Thermostat Delete [6L80 6L90 8L90]
Автокөліктер мен көлік құралдары
In this video we install the Superior Transmission Parts SURE-COOL thermostat delete for GM 6L45, 6L50, 6L80, 6L90, and 8L90 transmissions. This product is advertised to bring transmission temperatures down by 20%. By default the 6L80 has a thermostat set to open at 190 degrees. The SURE-COOL thermostat delete allows for full-time cooler circulation, and overall cooler temperatures.
About the truck:
2021 Chevrolet Silverado Custom Trail Boss
2" ReadyLift SST Lift Kit for Trail Boss and AT4
Goodyear Wrangler Ultra Terrain (285/65/20)
K&N 63 Series Cold Air Intake
K&N Blackhawk Air Filter
Range Technology AFM/DFM Disabler
LasFit LED Headlights, Turn Signals, Reverse Lights
Chapters
00:00 - Intro
00:19 - Disclaimer
00:48 - Setup
01:40 - Install
03:41 - First Impressions
04:48 - 300 Mile Review
08:35 - Conclusion
Пікірлер: 76
Awesome info and video! The music takes me back to the days of Airwolf flyin low and fast! 😎👍
@limitedslipautomotive
2 жыл бұрын
Goin for a little retro wave vibe!
You can drop the temps into the 150 range by replacing the water thermostat to a 180 degree.The factory water thermostat is 207 degree.
Installed on my 21 Custom TB after watching your video and doing some research. I highly recommend the Sure Cool! Traveling 3hrs on the hwy at 72mph with ac on 85 degrees pulling two motorcycles on my trailer. Trans temps were at 138-142 degrees. I'm still amazed at the cooler temps. I like the full time cooler flow over the thermostat any day including the upgraded 158 degree unit. I was unaware of a thermostat at all until your video. I assumed it flowed through the cooler already. 194 is way too high for me. Thanks for the info. Keep Bossin!
@limitedslipautomotive
2 жыл бұрын
Hell ya! I am still super stoked that I made this change on my truck.
@superiortransmissionpartsi5357
2 жыл бұрын
Thank you, we appreciate the feedback. More vids coming.
@hollyjosh2k
Жыл бұрын
You realize transmission temp needs to get high enough to evaporate moisture
@usphisics
7 ай бұрын
Do you have a 6 or 8 speed transmission? I want to do it but I have 8 speed in a 2021 and I didn’t see anyone doing it so far, so I don’t know how much fluid it will lose during the process and as we know we can not easily fill top
I put one on my 18 about 4 mounts ago it works as stated
@limitedslipautomotive
2 жыл бұрын
Best thing I’ve done for my truck!
you loose about 1/4 of a cup of tranny fluid - no big deal. You park the truck on level ground and with the trans temp at about 100* ( now since you removed the thermostat) remove the little 10mm check fill bolt from the trans pan. You should have a little dribble of fluid come out. If you need to add you'll have to pop the fill plug out and use a pump or a long clear 3/8 tube snaked from the engine bay to add Dexron 6. I installed this kit on my 2018 8 speed and love it!
Went from ~190F to ~145F on my '15 Silverado 6L80.
@limitedslipautomotive
7 ай бұрын
Love to see it!
does this not work on the 2021 2.7 turbo silverado with the 8L90? i cant seem to find the housing.
@limitedslipautomotive
Жыл бұрын
It does work on that transmission. I’m not too familiar with the 2.7’s however. What’s your average trans temp?
@jdballer10002
Жыл бұрын
@@limitedslipautomotive well it did not work on this motor/transmission setup. I average roughly 200-210 normal driving. But I’m on 35” tires
There’s an updated thermostat for the 6L80’s why did you opt out for this? The new thermostat opens at 158° rather than 190°. The sure cool didn’t work for me so I’m trying to figure it out.
@limitedslipautomotive
2 жыл бұрын
Why didn’t the Sure-Cool work? As for the updated thermostat, I didn’t see that service bulletin until after I ordered the delete kit. I still would rather have continuous flow rather than a thermostat as I take the truck off-road often.
@alextrujillo8658
2 жыл бұрын
@@limitedslipautomotive there’s probably a clog in the line or my torque converter might be going. I’m really hoping it’s a clog in the line somewhere.
@limitedslipautomotive
2 жыл бұрын
Hope its not the converter!
@FLbowtieguy
2 жыл бұрын
@@limitedslipautomotive if there's a service bulletin would this be cover under a gm maintannce package
@limitedslipautomotive
2 жыл бұрын
Should be covered under any warranty or service program. Regardless it’s an extremely easy swap, if the dealer asks an insane price you can do it yourself.
Does this work for the 10 speed transmission for the 2021 Silverado?
@limitedslipautomotive
Жыл бұрын
This particular product is only for 6 and 8 speed GM transmission.
@nicholas6167
Жыл бұрын
Is there one for the 10 speed that you know or I haven’t found one yet.
@pra3t0rian
Жыл бұрын
@@nicholas6167 I have a 2020 Escalade with the 10L80. Mine doesn’t have a thermostat housing on the side like this transmission does. It’s just a block that mounts the cooler lines to the transmission. My understanding is the 10 speed is internally regulated somehow. I haven’t towed but it hasn’t gotten above 210* going up into the mountains in 100* heat.
@timmer0102
2 ай бұрын
10 speed is electronically thermostated, not a physical thermostat like the 6 and 8 speeds. So you would have to get an actual tune done to make it run cooler.
How do you pull up your trans tempt on the dash lol.
@limitedslipautomotive
7 ай бұрын
There is a small black knob on the instrument cluster that you can spin to change the display.
Any idea why my temp stayed the same after I installed this?
@limitedslipautomotive
Жыл бұрын
What was the max temp before you did the install?
@limitedslipautomotive
Жыл бұрын
What truck do you have? Engine and transmission?
Would you happen to have the link where you purchased the kit?
@limitedslipautomotive
11 ай бұрын
globaltransmissionparts.com/6l80-6l90-sure-cool-cooler-flow-system-stl010/
@Dave_02
11 ай бұрын
@@limitedslipautomotive Thanks
Did you add more fluids after?
@limitedslipautomotive
Жыл бұрын
I did not, on these trucks only the dealership can measure and add fluid (unless you have special tools).
@ngirardo86
Ай бұрын
@@limitedslipautomotiveyou don’t need special tools. They have a full port on the passenger side. You just need a pump to do it. You could have even pumped a little into the trans before you put the housing back on if you wanted or filled the housing back up. That tiny bit won’t even matter anyway.
How long did the whole process take?
@limitedslipautomotive
Ай бұрын
An hour all said and done. Could be done faster.
Why didnt you put an aftermarket cooler in? Instead of the bypass.
@limitedslipautomotive
2 жыл бұрын
These trucks have pretty good coolers from the factory. With the 190 degree thermostat, the cooler wouldn’t be used until the temps hit 190, opening the flow to the cooler. The bypass allows for continuous flow to the factory cooler.
@truettnelson9802
2 жыл бұрын
Okay, I have 2017 chevy Silverado.. my transmission just got rebuild because of the torque converter went out. Now my temp is reaching 196... so I'm still doing my research on it
@superiortransmissionpartsi5357
Жыл бұрын
The Sure~Cool® thermal bypass system technology allows full flow on key start. Either type of thermo block/Pellet can stick. The STL010 can't stick and it's in full flow, the pellet is static closed and if defective will smoke the unit, no matter how many coolers you wish to add.
@superiortransmissionpartsi5357
Жыл бұрын
@@limitedslipautomotive love you man, I'm glad you get it. It's going nuts.
@duran4689
Жыл бұрын
@@limitedslipautomotive facts. I put a bypass change into my thermostat by cool solutions. Definitely been the best mod I’ve done
You shud come to Texas heat and test it see if it works
@limitedslipautomotive
2 жыл бұрын
I definitely should!
What trans is this
@limitedslipautomotive
2 ай бұрын
6L80
Actually you can check and add fluid yourself in this trucks without dipstick.
@limitedslipautomotive
2 жыл бұрын
My understanding is you need a special tool to fill? Have you done it yourself?
@faridgadimov5955
2 жыл бұрын
@@limitedslipautomotive yes I did.you can use any fluid pump to add fluid
@faridgadimov5955
2 жыл бұрын
@@limitedslipautomotive kzread.info/dash/bejne/fqKopKuDc8SZe7g.html
@limitedslipautomotive
2 жыл бұрын
And my understanding is you just have it running while you open the check plug, then fill to it leaks out?
@faridgadimov5955
2 жыл бұрын
@@limitedslipautomotive on my 8l90 fluid check temperature 131-149. You basically have to overfill a little let it warm up and then check again and let it run till is dripping
Pressure wash that mud off.your truck will run cooler without a mud blanket.
@limitedslipautomotive
Жыл бұрын
Haha, she likes to be dirty!
@SilverDollarSaloon
Жыл бұрын
@@limitedslipautomotive I see now ,your truck is a she.You like dirty women.
My 18 doesn't get over 140 😊
@limitedslipautomotive
4 ай бұрын
Love to see it!
@ngirardo86
Ай бұрын
Do some plowing or get it stuck and have a bunch of wheel spin and see what happens. Your transmission isn’t anything special. It will absolutely overheat very easily.
@louisflores653
29 күн бұрын
I don't abuse my truck, it's too beautiful 😍 😆🤣
@ngirardo86
29 күн бұрын
@@louisflores653 you don’t need to abuse it to get it stuck. Happens in snow all the time in NY. Your transmission if it’s stock is garbage just like the rest of them. If it is in fact stock and it doesn’t go above 140 I’m calling bullshit.
@louisflores653
29 күн бұрын
When drove to pick up a water heater today 22 miles I only got to 127 and my dash showed 210 , operating coolant temp. Oh, when I tow my 1500lb boat 22 miles to the ramp, 127 😂 I occasionally do a TPS reset, after it I drive normally for about 20 miles, it shifts like it did on my test drive the day I bought it new 😅 I only have 20,850 miles on my truck, I'll do the transmission oil and filter at 30,000
I wouldn’t recommend this..these new transmission like the temperature up keeping the transmission to cool could cause premature wear inside the transmission
@ericg.201
11 ай бұрын
Buddy what world are you living in. 😂
@ngirardo86
Ай бұрын
Stop smoking crack my guy. Heat is the only thing that KILLS transmissions. You don’t need to do it that’s fine.