6L80 Transmission fluid exchange process - 2020 Suburban
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- Опубликовано: 28 авг 2022
- Transmission fluid exchange 2020 Chevy Suburban
In this video, we will walk through the process for performing a full fluid exchange using a diy kit on a 6L80E transmission.
If you are interested in purchasing the Amsoil products shown in the video, click the link below:
www.amsoil.com/c/automatic-tr...
ICT Billet 551121-6AN; 6L80E AN fitting transmission cooler line adapter
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Shift Technology Products STL010
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See my other videos for doing a pan drop, filter change and refill.
2015, 2016, 2017, 2018, 2019, 2020
Chevy Chevrolet Suburban 
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Hot Flush is the wave! Great video.
Pretty slick fluid transfer set up. Thanks for sharing.
No problem 👍
Thanks for making and sharing this video! I made a similar setup based on this.
For anyone looking to recreate this, the only recommendation I'd make is to make sure the transmission outlet port lines can handle the pressure and heat of the fluid. I'm not sure what the exact numbers are, but I literally exploded the clear hose I had for my outlet line while doing this to my 2020 Silverado 6L80 (thankfully it was in my friend's driveway and not in my garage). I ended up just using some compressor hose which was overkill, but it worked well.
I didn’t do it super hot so the standard vinyl hose worked well.
Can you explain a bit more on how you made the pump and the size of the hose and connectors please?
I have a 4l60 e from 2009. I just use old cooler line, hook that up to passenger side top radiator.
That’s the drain.
Dump your pan, filter, clean.
Add tranny fluid from pan loss.
Dump fresh fluid into dipstick tube.
Start engine, monitor gallon by gallon.
I’m assuming you have no dipstick?
Thanks for making and sharing this great video. However, I really didn't understand the use of the bridging hose with a valve at time mark 1:35. If the valve there is open pressurized fresh fluid would be meeting pressurized drain hose and I think the fresh fluid would simply drain along with the old fluid. Please explain what I'm missing. Thanks.
Nice setup. Not sure what that special aluminum block with nipples is for. Can’t you just remove existing hoses and connect to them? I’ve thought about making a system like that but I have just as much luck draining 1-2 quarts turning the car off filling 1-2 quarts etc using existing lines. You mentioned Toyota. I tap into the output line coming out of the external cooler in front of the drivers wheel. Works great and exchanges all the fluid after three or four times
Thanks for the comment. I built this exchange kit for my Toyota vehicles where I can tap into the cooler lines directly because Toyota uses more conventional hose barbs. The Chevy uses a jiffy tite connector that is harder to adapt to. That’s where the extra block came in. I drop the pan and change that fluid, then perform the exchange to minimize cross contamination of old and new trans fluid. Hope this helps!
Will that contraption you made work with beer?
Interesting vid. Is this the first time doing this on this vehicle and what's the mileage and were there any problems after?
No problems after. I did this service after purchasing the vehicle so I can only guess it was never done before.
Just curious, I found this web site about the 6LE80 and 6LE90 transmissions "If you do not have an external transmission cooler, the cooler line flow goes as follows: lower cooler line > lower radiator port > upper radiator port > back to upper transmission line." But you said that the lower line was the out of the transmission and the upper line is the in.
Check out 12:40 in the video. The upper fitting is the outlet from the trans , lower is the inlet. This was confirmed during the process to make sure I hooked up the exchange system correctly. It also makes sense with the direction of the check ball on the thermostat delete.
Also I know earlier models had the cooler in the radiator, but these trucks actually run through the A/C condenser, which is odd.
Is one gallon enough if I’m just dropping the pan and changing the fluid? Not flushing
I want to say there is about 5 quarts in the pan, but I did not measure. I got 14 quarts for the whole exchange.
do you have a link to the plate you used?
ICT Billet Transmission Cooler Line Adapter Plate with Gasket 6AN Fittings Compatible with 6L80E 6L90E 8L90E Factory Oil Seal Line Connector for Custom Braided Hose Set 551121-6AN a.co/d/huFWGBd
Why would you want to delete the thermostat. And If you do what would be the temperature ?
Ty.
These transmissions run hot and many believe heat destroys them. There are many videos on the STL010 sure cool conversion.
I’ve noticed a 40 degree F drop on temperature vs before the thermostat delete. The thermostat blocks fluid from entering the cooler until the temp reaches 190F. Now I’m in the 140-150 range after reaching steady state.
@@smokingoatgarage I never thought about that. Ima check that out. Good deal
Now why in the hell would GM design the cooler not to operate until 190? There must be a good reason for that…
Also, completely removing the thermostat means your trans will take forever (maybe never on trips around town) to reach operating temp in cold areas like mine, I have to think that’s not ideal.