These models gm trucks have these common problem of torque converter getting shot. They have a design flaw for the torque converter. Our 2018 chevy silverado torque converter went out at 120k miles. We chose to rebuilt it. The transmission specialist shop replaced it with an aftermarket redesigned torque convertor and also installed a separate cooler just for the transmission to extend the life of the tranny because these gm models also have these problem of overheating tranny fluid. Hopefully this fixes the problem. Listen to Scotty Kilmer and get a Toyota. Our 2006 Toyota camry has 370k miles with the original engine and tranny.

I had this same issue and I put in a new torque converter and the issue was still there. It wasn't as bad but still noticeable. After having my transmission custom tuned, the issue was resolved. Torque converters are known to fail in the GM 6l80e trucks which does result in total failure but I feel it started with this tuning for converter slip to accommodate the DOD 4 cylinder mode.

@esau5.3

7 ай бұрын

So doing the custom DOD tune will fix the rpm bounce? Cause my 2014 Chevy does that but it doesn’t vibrate.

@adam96blackss

7 ай бұрын

@esau5.3 it fixed my issue, at first I just out in a new torque converter but it would still do that annoying rpm bounce while driving. When I tuned it, it resolved that issue for me

@onelove8810001

5 ай бұрын

It’s a trash system , and ou did it correctly try and uninformed and billet converter and clean up pump she will run harder than ever before

@freddyhagen7295

2 ай бұрын

Transmission tuning ? What that mean

@Jackson-pd5ve

2 ай бұрын

How much did that tune cost you? I need this done bad

Hello , where did you get your diagnostic done ?

Just had a brand new servo gm 6l80 tranny and torque converter from the dealership and 100miles later it’s still doing it with exact rpm fluctuations and shutter rumble sound that lasts 1-1/2 seconds to 2 seconds and then repeat. It does it every gear at light throttle or when let off rolling to stop light. Ticks me off $8000 of work done and still there. I agree with the comment earlier that it’s programming issue

@Jackson-pd5ve

2 ай бұрын

Hey man, I just paid 8k for the same shit. Have you found a solution? This shit is about to send me into a deep depression.

@dominictorres8961

2 ай бұрын

@@Jackson-pd5veu had to pay 8k outta pocket bro😵‍💫 fuck me man I just bought a 2017 GMC Sierra 6.2 8 speed and this hurts my stomach

@arturo2637

5 күн бұрын

Did you get it tune up

Mine was burnt fluid which then ruined the discs. Replaced the transmission with warranty.

I had the same act same thing , broke it open 1-2-3-4 wavy was broken also 35r ring broke

If you don’t reprogram your TCM to either fully lock the TCC or not lock at all, the problem still exists as it is a programming issue besides the hardware issue of a overheating transmission system. You have to also fix or delete the cooler line thermostat and perhaps add another or more tranny coolers to your system. Very shameful on GMs part as every truck with these 6 speeds will have this programming issue.

@Rehabauto

5 ай бұрын

This is very correct recommendation taking it to a tuner to adjust the transmission tables

@randyleonard4126

5 ай бұрын

Yup,looks like I'm joining the club now with a 2017 6L80 Sierra..

@robertcrippen9983

3 ай бұрын

So which is better to have it on lock or to not… I tuned mine but I’m sure I didn’t mess with the TCC .. 18 LT 109,000 mi AFM delete, gov scratched, throttle boost and raised my idle RPMs slightly… she doesn’t fluctuate RPM like the video but I have noticed going up hill coasting it’ll act hesitant until it shifts to run up the RPMs and that was prior to the tune as well

@teagreen2220

3 ай бұрын

@@robertcrippen9983 the TCC may be engaging in all gears which in my opinion is unnecessary. If you want you should only have it engage or lock in high gears like 5th or 6th. I don’t use lockup at all. I have not noticed any mileage degradation and I also have no problem pulling a trailer but I have no transmission thermostat and I run a huge surface area of cooler. At least you should have the lock be a solid lock in the gears you want, the stock program allows the TCC to never really be fully locked in an attempt to make it smoother I think but this causes unwanted wear.

@Kru6372

20 күн бұрын

The shutter is when my 2017 6.2 8 speed goes into V4 mode.

My 2009 Tahoe started doing this, was there any metal contamination when you inspected pan? Is a simple TC swap fine or has transmission damage already been done when this happens?

@poolsartisticplastering695

Жыл бұрын

Im not sure about a 2009 Tahoe as I don't own one but on my 2014 Silverado truck 5.3L V-8 the shudder was my first sign that I had a issue and my first move was do a full Transmission flush. after that didnt work I did a full Transmission & oil filter flush which requires to remove the oil pan. after that if you still have the isst ue I would look for a place you trust . its real hard to find good "honest" places for auto repair , do you homework. on mine it was the Torque converter and I was luck to find a good place where they diagnose and confirmed it was the torque converter . FYI they had to fully remove and dismantle my Transmission in order to be able to confirm and inspect that my Transmission was good and that it was only my Torque converter. Good luck 2k was the cost for a new torque converter and 4-5k is what I was quoted if it was the full Transmission rebuild

@ericg.201

Жыл бұрын

@@poolsartisticplastering695 I Experienced the same Issue the problem actually persist through the Torque converter into the Stator and even the boost valves in the valve body are a very common issue. Dealerships Quoted 6k. I Made the decision to Overhaul, permanently fix reoccurring issues, and topped off with Single Disc Billet TQ all for the same price. 17mpg in city 25FWY on 35s w/ 2” lift. 🪄

Changed the thermal control valve to open at 145° instead of the 194 stock which is part of the failure. Change the converter to a billet one.

I had the same problem but I got the 8 speed and I replaced my transmission fluid and fixed the problem

@jcortes3930

Жыл бұрын

Did you use the updated fluid?

@ericsanchez4168

Жыл бұрын

@@jcortes3930 yes

@lassiejr2115

Жыл бұрын

@@jcortes3930 I did mine as well 152,000 miles with the new Transmission fluid , and a bottle of Torque convertor slippage . I think water condensation is the failure . I haven't drove it much after the new Fluid .

@phillippacheco6587

Жыл бұрын

did u just change the filter and fluid or did u have it flushed im having the same issues

@tomwoods8678

11 ай бұрын

Whats the new updated fluid?????? Just got a 2014 w/167k, runs great now but definitely want to address issues before they start. I plan on keeping this beauty for a while.

Hi did you notice that your truck wouldn't accelerate as before when you had this problem??I own a Kia but its doing same exact thing RPM fluctuate it started doing it gradually.

@poolsartisticplastering695

2 ай бұрын

On my chevy truck it was the transmissions torque converter . GL

Isn't that right around lockup for a stock converter. So it's looks right to me. Are you having other issues that can be traced back to converter?

@poolsartisticplastering695

Жыл бұрын

hesitation around the same speeds and light acceleration. stall speed / converter issue confirmed, I got it fixed for about $2200. they have to drop the the entire Transmission in order to do the converter upgrade and fix. so its labor intensive but theses guys where great. 2-3 day turn around and they even send me pictures and video which you almost never get with mechanics and shops.

@arturo2637

5 күн бұрын

​@@poolsartisticplastering695did you put in a heavy duty torque converter?

I did a transmission flush and it didn't help until I did about 6 full throttle accelerations and the problem went away..

@richardrodriguez7962

8 ай бұрын

What year and miles?

@Blazer69s1

5 ай бұрын

It went away because you blew the trans ? Lmao

at 146k miles had the trans been serviced prior?

@poolsartisticplastering695

Жыл бұрын

Yes I had done a full transmission flush & new filter 2X B4 i decided to a shop. Both transmission flushes did Not help at all . Torque converter confirmed and replaced. Works good now 150k on it

I’m having this same issue in a 2015 Silverado with 104k on it. Took it to a transmission shop, they confirmed. Got a new trans and torque converter put in for 8,000 big ones and the next day it started again. I quite literally can’t afford to lose this truck so if anybody has any suggestions please lmk!

@poolsartisticplastering695

2 ай бұрын

If you paid 8k and the next day it was still happening I would go back immediately and ask for the warranty . It might be something else but if they dropped the ball and fixed the wrong thing that’s 100% fraud or at minimum a complete mistake .

@arturo2637

5 күн бұрын

Idk I took mine to two 4 different places two said my transmission needs to be replaced with new torque converter one place 5k another place 4.5k another place said your transmission is good I don't see any issues just to do a transmission tune up like putting in a new filter and changing fuilds and seal idk who to believe 😢

Did the truck have a rough idle on DRIVE?

@poolsartisticplastering695

2 ай бұрын

No just the surging of the rpm’s but not a rough ideal .

My trans blew at 65k miles on my 2016 Sierra.

My truck is shuddering and did so bad yesterday it cut off. 14 Sierra 80k trans thermostat upgrade also….. another 4k into this bitch

@poolsartisticplastering695

4 ай бұрын

In my case it was diagnosed as the torque converter not the transmission, but in your case the transmission may or may not good anymore. In my case upgrading to a quality converter fixed the shutter issue completely. It will run you about $1500-$2000 . But you should get 2-3 opinions b4 deciding what’s feels appropriate. GL

@GansquaddGaming

4 ай бұрын

I’m waiting on the call right now, I can recall one slight slip a year or two ago and nothing since or two years prior. I know my TC is shot but like you said I’ll have to wait and see how the residual damage affected the trans. I’ve heard from some solid trans guys that this trans and even tc is decent, it’s the factory tune and slippage allowed for DOD/afm that eats it up. I did request an upgraded Tc and I’m going to get it tuned for no tcc slip and all that see how it goes. I was quoted 1100 for tc replacement, 3500-4 for rebuild.

@jojodelacruz5313

4 ай бұрын

Mines the same way rn 3 people have told me it’s the torque converter

@arturo2637

5 күн бұрын

​@@poolsartisticplastering695but how did you get it diagnosed and what kind of test did they do

I think your car is keeping transferring from V8 to V4 and then back to V8

154F this is too cold for GM trans.

get a new truck

@flyonawall6521

Ай бұрын

that's the solution. I like my truck but Chevy really screwed up. Why would I buy a new Chevy knowing they are aware of this issue and fail to repair it properly. So Chevy wants me to spend +$50k for a new truck with the possibility of another issue they will refuse to repair as well? Well...no thanks.