Silverado 6L80 6L90 Circle D Upgraded Torque Converter Install - Save 2014-2018 Sierra Transmission!

[@dannydanko4627]

I used your DOD Delete videos last year to fix my truck, will probably be watching this one a few dozen times in the future too(hopefully not, but probably).

[@TheSundaeDrive]

Lol glad to help! Transmission removal will be getting uploaded in a few weeks.

[@maldodanny]

Steps to extend the life of your 6L80. 1. Disable AFM (DOD) 2. Disable torque converter lock up from 1st to 4th gear. 3. Install a Sure Cool transmission cooler by-pass. 4. Install a heat shield on the exhaust pipe that runs right under the transmission pan.

[@TheSundaeDrive]

Good tips and list!

[@resid3nt]

How do you got about disabling the tq lockup on 1st through 4th?

[@maldodanny]

@@resid3nt get an hptuners MPVI. You can do the torque converter and disable the AFM. A tuner is going to charge you 500-600$. The hptuner will pay for itself in the first use. There are plenty of how to on KZbin.

[@wisky3]

​@@maldodannyhptuners and bluecat software which is free.

[@alexlevingston]

I definitely prefer doing it in the vehicle than out of the vehicle only because I don't want to have to do extra work.

[@MrRGiller]

Nice video indeed. My old torque converter seems to be doing fine so far on my 2015 Silverado. Knock on wood. Lol. I have around 107,400 miles on my truck

[@TheSundaeDrive]

Thank you! That is right around when they often fail. I replaced mine at 107K and now at 152K and no issues. Been running the sure cool upgrade since around then as well.

[@MrRGiller]

​​@@TheSundaeDriveI am hoping mine doesn't go out then. Lol. I don't do much hauling trailers or towing heavy loads and whatnot or heavy loads. How much does a job like this cost roughly to have a new torque converter replaced if mine goes bad? Thanks.

[@TheSundaeDrive]

Unfortunately when the torque converters fail they often clog the pump which burns out the transmission so normally an entire transmission is required. heat seems to be the killer so I would recommend a new torque converter and the sure cool upgrade.

[@TheSundaeDrive]

Costs varies depending on if you are 2wd or 4wd

[@MrRGiller]

​@@TheSundaeDriveDang! That will definitely be an expensive repair. Thank you for the information.

[@benjaminfisheriv9340]

Billet converters really are the only solution, stock converters are stamped steel and the ears for the bolts are welded on created more heat against the clutches inside the converter

[@benjaminfisheriv9340]

It’s not a matter of if they fail it’s a matter of when

[@TheSundaeDrive]

Agreed!

[@brandonnguyen1486]

Is replacing the transmission pump very invasive to a point a trans shop should do it?

[@wisky3]

Yes

[@wisky3]

At the very least ALWAYS replace the $1 input shaft turbine seal gm #24219390. They get hard from the heat and cause the tcc to slip amd burn up the transmission

[@JoeyBrioso-l9m]

What would you recommend for my 6l80e? 2018 5.3 Tahoe Should I upgrade to a 6l90e converter or get a billet converter from oriellys/ autozone . Thanks

[@TheSundaeDrive]

The stockish torque converters normally will last around 100K it seems. They may last longer with better cooling tho. A billet torque converter should lastonger but you still need to do cooling upgrades. The 6L80E is the same as far the torque converter is concerned as far as I know. My truck technically has the 6L80e

[@JoeyBrioso-l9m]

@ I already upgraded the cooling thermo bypass and put Amsoil signature tranny Fluid when I bought the Tahoe at 60k. Now it has 80k. I’ll probably buy the TC Reman torque converter from autozone . I’ll be installing it myself . Thanks for your videos

[@johnnybobgoldstein2823]

@@JoeyBrioso-l9m did you buy the TC reman? I’m thinking of going with one for my 6l90.

[@JoeyBrioso-l9m]

@@johnnybobgoldstein2823 yes I did purchase the tc reman from autozone. 20% off free shipping and $175 core. It should arrive this Monday.

[@JoeyBrioso-l9m]

@@TheSundaeDrivewould you know the stall speed for the 6l80e and 6l90 torque converter?

[@btgbowtie]

The circle D torque converters are trash. Installed one in my 2018 Silverado 1500 and it broke within 6 months

[@TheSundaeDrive]

Oh really? How did it fail? Stock power levels?

[@treya29]

@@TheSundaeDrive I'm eager to hear as well.