Always nice when the warranty comes through!

Which truck have 6l90 or every truck have 6l80. Thank you

im at 113K miles on my 2016 Sierra and i think my TC and tans are toast, I was able to get a trans off a 2018 silverado LT with 5K miles on it (same 6L80 trans). The truck was totaled but trans still good. planning on doing the swap in a week. my questions are: do you think any programming/relearn is required for the whole trans swap? secondly, while its down should i upgrade the torque converter or just use the OEM?

@@utrocker7 I would definitely upgrade the TC. That's what caused my trans to fail. As for the programming, my guess is it will need to be reprogrammed or at least a relearn for sure.

I agree with Michael

Seems like I got mine swapped out just in time!

You should have replaced the Front Seal as well!

I believe that as well. Also contributes to the known cylinder misfire due to stuck lifter issue. I bought a $60 device to plug in the OBD port that disables the AFM and man does it ever respond better.

Very welcome!

They definitely don't make them like they used to. Do you know what tc the shop installed?

@@TheSundaeDrive Yea and I don't know which TC they installed.

So your TC broke and your trans stayed fine? You replaced only the TC?

Getting there! Definitely took a lot longer than planned

Glad it helped! Good luck with the swap

Did you just swap in a new converter or did you do a full trans rebuild too?

lol this comment was exactly 10 months ago. Hopefully you are having no issues

good tips!

Do you have a part number for that converter? I’m looking at one myself.

Thanks for the info - what brand of TC did you get for your L6-80/C5? If you could post the link, that would be awesome. Thx!

That stinks 😔

My 6l90 in a 2017 2500 grenaded at 80k,cost me 5800 for a complete new tranny

I’m at 150k on the stock trans. 😬

@@jwhmerica504my wife’s Tahoe ltz just hit 150k and got the shutter. I’m going to try to just do the TC swap and thermostat delete. We’ll see

@@stevenllewellyn8906 any luck?

Awesome! Glad they have been helpful!!

After seeing this video me too. I’m pulling my 5.3 in a few months and I will definitely be replacing that torque converter while the motor is out.

Definitely a good idea. If you want even stronger, go with a billet converter.

@@TheSundaeDrive where did you get the converter

I have a link in the description but I got it through my local dealership

Good to know that it failed that early. I am planning to swap to a billet converter around 200K miles which would be around 92K miles total. Sitting at 136K roughly right now but maybe I will change it earlier.

My TC in 2017 2500 with 80k grenaded the tranny dropped 5800 for new trans

Frequent fluid and filter changes are a must for sure! I plan to service it every 30K miles as you suggested 👍

Would a pump pressure regulator not throw a code and a dash light? I have the shudder but no codes whatsoever.

@@davidouradnik7925 No it does not set a code for a worn pressure regulator valve. Most of the time it will pick up a clutch pack is slipping code or solonied performance.

Glad to help! Hopefully it will help prevent another failure for you!

Generally you don't mess with rear mains unless they're leaking. Better off keeping it sealed because it's hard to get a good seal replacing it. We do that with Allison builds. If the rear main is good, it stays

@TheSundaeDrive what do you think?

Aww man, that stinks. You made it pretty far on the stock one atleast. Seems like it should almost be standard 100K mile maintenance item

Best of luck with it!

@@TheSundaeDrive worst news. Tc failure, transmission failing. Got a quote. I think I’m going to call and make arrangements tomorrow. Just a bit out of my capabilities. Enjoy watching your videos though.

@@two4twentysam sorry to hear that :( make sure if you plan to keep the truck you get a billet torque converter otherwise it will just fail again

Glad to help!

Good to know! I plan to swap it out around 200K for a billet. Which one did you go with?

That definitely helps with the temps

Wouldn't hurt!

Glad to help!

Haven't looked into it yet. Planning to do the new GM TSB for the thermostat

You are lucky! I would pre-emptively change it before it happens again. Normally they last 80-120K from what I've seen. If you tow a low you'll probably be on the lower end of that range.

This clutch configuration is like the 2015 f-250-150

That's a lot! I do plan to go billet before I hit 80K miles on this new tc. Just to be safe.

that stinks man - you were fortunate it occurred while under warranty. Can't believe it failed with such low mileage - most of the failures we have heard about were at 80K and above.

@@TheSundaeDrive i believe it was the torque converter at least. It's been a few years. I'd have to find the report from the dealer but I know it said they found debris that was clogging it up. The truck is at 85k now and I haven't had any issues!

It probably was

My 2015 is doing it, just turned 50k. What makes no sense to me is that I purposely had the truck tuned by Diablew to prevent (delay) any future transmission issues. Didn’t really start doing it until after I tuned it and driving it on the interstate more instead of short back road trips. I’m thinking of doing a flush/filter since it’s probably never had one done. But I have a feeling I’m going to be doing a converter here soon. 🤨 tempted to go ahead and fork over the money to do a proper DOD delete with a small cam and a 6l90 converter since I like the stock stall for any future towing needs/keeping torque down low in the power band for my larger all terrain tires. Also thinking of putting an aux cooler and a deeper pan on it to help save the trans.

My thoughts exactly. Preventative maintenance is key with these trucks.

Good idea! Best of luck with it!

did it work

@@brandon367011 Yeah, both worked great. The leak was primarily the rear main seal, but also a leak in the plenium cover. The new torque conver also workes great! The old converter was not holding well and rumors say that a high mileage TC could ruin a transmission by sending material into the transmission. I'm pretty happy with the results.

@@20tea good dead ! I have a 17 Silverado on 35 with only 51k miles and isn’t my daily driver but I should change the TC anyway from a 6l80 to a 6l90 ?

I would recommend a bullet converter. They normally will last until around 100-120K unless you tow a lot. It could fail earlier but not typically

I've been changing it each 50k as well, no issues yet

I bought my 11 Sierra LC9 from an elderly local Guy who's a life long GM buyer. He babied the truck as youd expect with all services at the dealership I bought her from. Making the records as easy as it gets for me. I'm a builder so I'm hard on the truck but that's why we buy trucks right? We have the heaviest available package for the 03' year in the 2500hd 6.0 for the severe pulls/loads and she's bulletproof. However!! 3 years ago I pulled out 6'-10' dump trailer with my half ton! Just to get 3 yards of 3/4" gravel for my own house needed for a walk way. Told the guy out in the local yard what I wanted he said no problem so I figure great I'm heading in to pay as he knew his shit and how to properly load......I come out of the office and he says you're all set man the 3yrads of gravels loaded I said thanks and see you around.... Fckn guy didn't know that the new Bobcat wasn't equipped with the same half yard bucket oh no it had a yard bucket so his SIX FULL BUCKETS almost filled our dump trailer so I'm looking at it like WTF!?? I double checked that's only 3 yards man you're sure and he replied ya man I've been doing this almost as long as youve been alive, what's wrong....so I go back to me truck fire her up and put it in 4wd full on as both axles on the dump were showing a load to put it mildly. The 11' HALF TON! in tow haul got that load moving very easy, but I have no electric brake control in the truck as we have a real full on work horse for that lol and stopping that load was very hard. Knowing something is way off I pulled it to the shop and hooked the work truck to her. It was 6 yards at 3000 pounds plus the dump about 2000 pounds the truck pulled up some long steady grades to get to the shop. So that is legitimately 20,000 pounds my HALF TON was forced to pull and to stop! Honestly she impressed me so much easily pulling the load I was double guessing that old timer way overloaded it, but trying to stop that load took every skill I had so I knew it was over. At the shop I rolled the mesh cover up and inspected the load myself closely this time. I was extremely pissed off as one clear look even a city boy could tell that's way more than 3 fckn yards man. Had no choice but to pull her to the shop once I left. Between being very disappointed with myself for trusting the old timer down there so much as it is ultimately my responsibility for what I pull with my truck, yet at the same time I, along with all the guys there were absolutely blown away the half ton Sierra pulled that 20,000 plus pound load so easily. They all witnessed me completely stop on the slight grade so a couple trucks could move outta my way, then have to get all that weight rolling again and it did make all 8 cylinders work but she had power to spare! The 2500hd equipped with the heaviest possible setup/package even offered by GM actually had abit harder time getting the load moving even with 4.11 ring&pinion....but the random dumps brakes made all the difference so I decided to pull her all the way home a half hr drive purely uphill by taking all the back roads going slow an easy allowing anyone behind me to pass. That load was thousands of pounds above even the HD work truck built for it capacity, but the way that 11' LC9 with the 6L80 and 3.52 (I can't remember exact ratio but close enough) ring& pinion pulled that load making it so effortlessly even the Ford guys with diesel were the first to say that's beyond impressive. Absolutely STUPID! A combination of mistakes/stupidity lead to that. I am telling the truth entirely and ya it's embarrassing as it gets to admit that even tho I know better I STILL pulled off that drop dead stupid move, yet the truck took it. That gravel was moist as hell but doesn't hold water like sand, still the 3000 pounds per yard is a conservative figure, and there was a full 6 yards in that 1ton dump (rated to haul 4 tons itself) That's pushing as hard as a guy can to break his truck or have problems of some sort, yet our trucks stepped up, took that ass whippin and just carried on. I definitely got LUCKY and would never allow it to happen again, but the fact remains that the 2011 Sierra 1500 LC9-6L80 3.52 R&P pulled over 20,000LBs off the fckn hitch (rated 10,000LBs max) mostly uphill. Well done GM👍🇺🇸👍🇺🇸🤯

@@johnserrano9689 3.42 rear end likely. i have the same powertrain you described, and have only towed about 4000 lbs. it did it without any issue, but thats hardly much considering the tongue weight was probably 400-500 lbs. otherwise it gets daily'd, has done about 20k miles a year all its life. gravel roads, minnesota salty winters. rusty but trusty thus far.

That's crazy, I accidentally told about 13K lbs with my 14 5.3 and it was good just couldn't go above 45-50mph

@@TheSundaeDrive it's crazy what we do at times, but the fact we know better in the first place is the funny part in the end. If we damage our trucks being that stupid then we man up, complain as we're lowering the tranny down and out but after a week or 2 we laugh. The times we get LUCKY we also know enough that it's nothing to brag about lol I love the 78' GM trucks as an example, but a 78 half ton had no chance of pulling that 20,000lb trailer man let's face it a dam 3/4 ton of the era would be extremely sketchy. But our new trucks we curse out when say a tank pressure sensor goes bad dropping that 5volt circuit putting the truck in limp mode, the truck screaming at us turn off engine immediately as there's no oil pressure! But we know there is. So we gotta hook up the volt meter to the battery ground, other terminal to the grey wire on the MAP sensor watching the meter as we unplug 1 sensor at a time until the 5 volts comes back......but at the end of the day they really have come incredibly far. Fckn 1500 now is equal if not stronger than the old 3/4's an there on up I guess it's the beauty of such a competitive market 👍🇺🇸

Good to know! I think this ran me around 400 or so but it's been awhile.

How’s it holding up?

@johnnybobgoldstein2823 all 10 I've installed are still on the road with 0 issues. They also had the afm and pwm tc lockup turned off via tune. I have over 175k on my personal with this exact converter.

@@joeinmi8671 I appreciate the reply!

That stinks 😔 definitely recommend going with a billet transmission for the rebuild.

So you replace the TC or did it ruin the trans?

It is a lot for sure. But with the prices of new vehicles and interest rates, I want to keep my current vehicles going as long as possible. New trucks are even worse

If the flush made it better in my opinion there is a good chance the transmission is ok and the torque converter may be starting to disintegrate and clog the lines. To me it's worth a shot because the torque converter will need to be replaced regardless. Is the transmission slipping at all? The sooner you replace it, the better chance you have of saving it if that is the issue. That is just my opinion tho as it is hard to know for sure without opening it up

I haven’t noticed it slipping at all. How difficult is it to replace? Easier to pull the tranny out to get at it or the motor? I think the dealer was thinking that if replacing the torque converter, may as well switch the tranny too since it would be out.

Easier to pull the transmission for sure. If you are doing the labor I'd only do the transfer case. A good shop can probably do it in 6 hours or less I would imagine. I've never pulled the trans myself so not positive.

@Fishermanjuice22 do you mean the rps fluctuating a few hundred rpms up and down whe the torque converter is locking up?

The thing like rumble strips is the torque converter clutch starting to fail. It is random slippage of the clutch that shakes the torque converter. It is commonly referred to as torque converter shudder.

Frend do you think that changeing fluid transmission by mobil 1. Helps? I know a los about it. Thank you

@@andresneira9745 Are you talking the Mobil 1 HP fluid? That's only for the 8 speed transmissions. The 6 speed just run any good Dexron 6 ATF so GM, Amsoil, Mobil, etc. Dexron 6 for the 6 speeds, Mobil LV ATF HP Blue Label for 8 speed.

@@andresneira9745 Changing it will put fresh fluid in which will replace and replenish the additives used to regulate clutch slippage so changing it is still good to do. Every 40-50K, especially if you tow.

Yeah my trasmisión is 8 speed so i will change for mobil 1 because my transmission Shakes some times

I went to chevrolet and they wanet put the factory but i heard that in other chevrolet they put mobil 1. So has 2 diferentes mobil 1?? My truck is a silverado 2017. 5.3 8 speed

Did you know any new infos ?

Old comment, but my dad's 2012 just got a new 6L90 after his transmission died at 187k. It mostly drives the same in terms of "quickness", but the transmission feels a lot heavier when it shifts which honestly is better than the sloppy feeling of the 6L80s. My dad likes it more than when it was stock.

Always a good idea for sure! My transmission is lasting with the new tc so far. 128K miles issue free.

Great point! I actually spoke to them tho and they did not have any with a low stall like factory. they said going with 6L90 was best for my application

That is strange. They did have a low stall truck dual disk one in March of 2020.

Agreed. Post this video 6l90 guys have posted that they are experiencing similar issues. I plan to upgrade to a billet around 200k Miles

Billet is definitely a better option. And I try to change the fluid every 30K roughly to be safe. Which billet did you go with?

@@TheSundaeDrive “Circle D”

No issues at all. Billet is better option tho if you can find one you like.

@@TheSundaeDrive over twice the price for anything billet that I’ve seen. Any specific reason for going billet over the 6l90 like towing for example? Unless you’re aware of a billet close to the $400 mark

No issues with my 6l90 transmissions so far. I have about 22K miles on it. I do plant to change it out when I hit 200K miles (90K on the converter) to a billet just to be safe.

Agreed. Seems like most failures happen after 100K

Yes, a billet tc would be the way to go. And frequent filter and fluid change. I recommend every 30k miles as well as a cooler thermostat

Change the fluid more often if you tow a lot

Thanks for that feedback! Unfortunately I do not have experience with the 8 speed. I do know there are a lot of shuddering issues and various Service Bulletins out for them. I've heard that changing you something like Amsoil usually helps. If you dealer is able to detect the shudder they have a flush procedure they are supposed to do for free from what I understand. I think you probably have avoided the issues by swapping to Amsoil

Gm tech of 15 years, we just flush the 8 speeds with mobile 1 hplv now, works awesome, on the 6 speeds, it depends on the amount of metal in pan, small typical metal we flush with dex 6, large Abnormal We replace converter, and will I lnspect pump and pump housing, also sometimes the tecm gets metal that busts through the screen and into valve body,. If ur 8 speed shutters “ it can be pretty voilent, go up hill at steady speed of 35mph with trans well warmed up, if you have the shutter, you’ll feel it.

I have a 17 Sierra with the 8 speed and the 6.2. Had the violent shudder at 30k and the dealer did a fluid swap and flush. 3 years and 27K more miles it came back but was worse with shudder, noise and slippage. The dealer replaced the torque converter this time, fluid swap and flush. They didn’t see any metal in the pan, so they didn’t do a full rebuild. So far so good this time. September of 2022.

None so far for me! 20K miles on it

I will be. Not yet.

Check out precision transmission, they did a pretty good one.

Will do 👍👍

I have the 6l90 torque converter linked in the description 24242552: amzn.to/3oSVMuk

Here you go! amzn.to/3oSVMuk also added to the description

Thank you good sir

No problem!

It is listed in the description under the parts section :)

Aftermarket for sure. Just need to find one that has a good stall rating for your application. I haven't looked into aftermarket options too much yet tho but I will when I start getting near 200K miles in a few years

I have a 2015 suburban what torque converter did you wind up going with? Thx

That seems a little steep but probably how much it goes for. The Torque converter itself runs around $1000-$1500 or so from circle D if you go with the billet option.

@@TheSundaeDrive Thank you that was my thought also.

If it is the 6l80 it should

I'll look into it. I'll most likely swap it out around 200 or so

i have a 2017 silverado half ton with v-6 engine. bought it new and love it. driven with care. at 43 thousand miles had the dealership change all 12 quarts. now its at 77 thousand and this coming tuesday gonna drop the pan and replace filter but will only replace the 6 quarts that i can drain out. still has lots of "meat" on the original brake pads. gonna wrap the crossover exhaust pipe with that heat insulation wrap, hopeing that will deflect some heat. so far so good but all these scary stories on trans failure scare me. its my only ride.

You should stay with the stock stall then most likely. Talk to the shop you are buying the torque converter from and they will be able to provide more insight. Circle d makes good torque converters from what I have heard.

@@TheSundaeDrive thank you

That is what I used it on here. You just need to have the 6L80 transmission

@@TheSundaeDrive appreciate.

If you have the 6l80e transmission it should

8K miles on it so far with no issues!

Not sure but maybe someone else will weigh in

My 2011 Silverado had the torque converter go out and trash the trans at 105k. My 2017 Tahoe had the same issue at 75k. I drove the Silverado way harder than the Tahoe so... I'd say yes.

No issues in 22K miles!

So far so good luckily!

In other word will they bolt up without modification?

Sadly I am not sure. Could he different flywheels and or torque converters. You would need to check part numbers.

@TheSundaeDrive thank you for getting back to me I did some research and from of what I have seen it looks like they will bolt on but their was no mention in changing torque converters etc.

@@josephbenson3784 nice! Good to know!

I definitely plan to 👍👍 just have to get around to pulling the bed off again

Sounds about right. Were you able to catch it in time to save the transmission?

@@TheSundaeDrive Yes but rebuilt it anyway because it was out. All Raybestos stage 1 clutches, updated pistons, Sonax zip kit and a Circle D twin disk truck converter. It is working flawlessly. I have had it back in for about 2 weeks so it is still learning. It has had a little tcm tuning done to eliminate the lockup in gears 1-3 and eliminated the programmed in tcc slip. When it came apart there was some noticeable but not bad wear on the 2,6 clutches and in the 1,2,3,4 and 2,5,R clutches each had one clutch plate that had a small spot of material that flaked off. The L,R clutches looked basically new still.

@@jeremymardlin5381 nice! Hope it lasts for you! Please update us if you have any issues long term

Of course