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How is the heavy duty 6l90 torque converter holding up? I’m planning to replace my 6l80 torque converter soon. Where would you recommend for a billet tc . Or should I upgrade to the 6l90 tc. Thanks

Anyone knows what it sounds like?

Was this the QT ll, AWD 146 or 245 case??? Wondering if i can split mine or has to completely come out! Thanks!

A thief is a more honorable occupation than being a GM powertrain engineer. My impeccably maintained 2016 2500HD is on its third transmission at just 65k miles. This time an independent shop rebuilt it because the OEM parts are shit. It has a billet torque converter, Sonnax internals, a Tru Cool 40k transmission cooler and a tune. Hopefully this one lasts. I’ll walk before I spend another dime on a GM product.

Well done. Very informative. Saw and learned what I needed. Thank you.

what is the part number ?

Hopefully I don’t need to do this, but if I do looks like I can do it thanks to your video. I change my Transfer case Fluid along with the front & rear Differentials every 30k and I hope that it will prevent any future issues.

I’m on my 2nd one now

Just happened to my 2013 grand Cherokee and i am in the middle of changing it. Thanks for the help!!

Fuck American car so much problems

Can this work on a jeep srt 2012 transfer case?

Did u have n engine light

Watching this video, gave me the confidence to do it myself. The auto part store gave me the price of a new transfer case at 1800 to 2750... i called the dealership parts department got the part numbers and Google searched them and found both sprockets and chain for less than 450 and I put them on myself due to this video... oh and the auto part store did not sell the parts separately... dealership only.

Where did you find the chain at? I'm having the same issue on my 06 srt8 jeep. Transfer case is the 146

All that work and you put Fram ATF in it? I think Fram oil filters get a bad rap, which I think they are fine as long as you change them when you’re supposed to. But to not use the synthetic Mobile One or Amsoil ATL is a mistake. Good luck with it!

Just replaced the TQ converter in my 2015 with 201,000 miles it was making a sound almost like hitting rumble strips and RPM fluctuation. There was quite a bit of material on the magnet in the pan. New heavy duty TQ converter and filter with fluid flush and it drives like new.

Great video thanks ,👍👍👍 Not sure what to do with mine. Seems to shift good.(sometimes down shifts funny), but im thinking my converter is going bad. Shudder, especially when getting up to speed, but then when im driving at speed mine gets this hard crazy vibration for a split second, then goes away. More when im accelerating than anything. Then im torn on what to do about the trans. If I change the converter, should you go ahead and revuild the trans??

Everywhere on Google and if you don’t wanna look there, call the dealer

Hi, I've got a 1994 Jeep Grand Cherokee Laredo ZJ with the full time all wheel drive. It's making the same noise when I do a hard pull off from a stop. My Jeep has the NP 249 transfer case and it does have the viscus coupling. Do you think the chain could be causing the noise and would the cover be able to be removed as easily as this jeep was? Thanks.

Hi where can i buy it 3:39 !

Thank you man fixed mine

Fluid still passed underneath the clutch while lock up is applied. Gm made tcc slip intentionally on these units. The Converter fails because the front cover overheats and warps. When tcc slips while the converter is in lock up it destroys the carbon woven lining. (the lining is only 00.20 tall). The real reason these units fail is do to the pressure control valve in the pump wears out and the transmission begins to over heat. Then it blows out the converter

do you remember offhand what the torque was for the 8mm bolts that couple the front/rear drive shaft & the 12mm for the balancer?....I appreciate it

I was lookin at the manual for this chain install and it says "There is a blue link on one side of the chain. This blue link MUST be installed facing upward" Not sure if they mean facing outwards so you can see the blue links after you have the chain installed or if they mean upwards like at the top of the sprockets

Thanks for the video man the best I found yet

Hey man - I was a test engineer at a torque converter tier 1 supplier in Ohio. From you video I wanted to tell you a few things. First off, awesome video! I've wanted to see what the tc's lock up clutch did. Second - the piston that applies pressure to the lock up clutch has leaf springs between the inner top shell to the outer shell that wraps around the bottom. They separate from each other under a pressure differential governed by the transmission controller. 3.) aluminum casting seems normal imo - especially for a non prototype. Possibly some cavitation happening. Obviously not a great casting. The stator also has a clutch commonly known as the one way clutch that does lock up during acceleration and what helps generate torque based on the redirection of the fluid force vectors of the blades. This is usually what you test - the one way clutch on stator. It locks up in only one direction and free wheels in the other. Again - all governed by fluid force vectors. 4.) I think this TC is what's called a 2 pass TC. It's for two main fluid passage ways. The first is as you said that comes into the many area between the impeller blades, stator, and turbine. This is known as the torus. The other passage way is the opposite direction and locks up the converter clutch due to that pressure differential. The TC will not generate additional torque anymore and the torque ratio is 1:1 at this point in terms of input (impeller/ pump) to output ( turbine). There is also 3,4 and 5 passage way converters with more control on the converter lock up clutch. 5.) I believe most converters lock up clutches do continue to slip all the time based on Manufacture tuning. But it's within very low % differential between input speed and output speed of the respective turbine parts.

Thank you!

Does anyone know torque specs for transfer case bolts. And drive shaft bolts. Thanks

Where did you buy the chain? And stubber

Hey give us an update, no shudder a year later? Ty

1:10 hopfully thats the case here...... yes you identified the case correctly. lolz

I hope you rebuilt the trans when you put that new converter in. You can’t just throw a new converter at these when the my fail.

Hi !What is the part number?

You said you started to have shudder around 80k. How often did you service it ? Edit: 😂..after looking at comments it seems you don't reply to questions..

Thanks, I think you are the only one on yt that does a breakdown on a 6l80 torque converter

Im having same problem. It only makes noise as you accelerate. I can let go of peddle and no noise. But hit gas pedal. And clunk clunk. Did you have same issue. Gas pedsl only noise

Where did you bought the parts

Nicely explained. I agree with you, even though there are now a lot of videos on this topic, none illustrate the fine details well. Even getting it all apart leads to questions, the design is so elegant. I'm surprised there is a core charge for these things, since to get one apart you'd have to cut into it with a grinder and then re-balance it after replacing seals, clutch material, etc. I wonder if they simply test them out on the bench, somehow replace seals without cutting welds, then resell them as rebuilt.

Hey fellas and fellest, I’m about to attempt this here in a few mins. What type of fluid did you use to refill it?

Check out my TCC/Lock-up explained video!

Did you have and TCM codes ? What are the exact symptoms of this issue ? I don’t really know how to identify the shudder but I can feel something is off with shifting and now there is a slight noise

if you replace the converter why not go through the tranny, you said you have metal shavings.

Just did this on my wife’s 2013 grand Cherokee I wouldn’t have attempted it without your video thank you! Took 8 hours but went pretty smoothly thank you!!

That’s what my 07 Jeep srt8 doing do you think it’s the same transfer case ???

Which transfer case ??

are there any special tools required for gear removal? If not where they easy to pull off with the chain?

How long did this new torque converter last. Was it a permanent fix or did you have to do the trans?

mine is doing the shuttering at 70k. so pissed.

Get HP Tuners and tune the trans. Well worth it!

Wow - so the lockup clutch material is just 'painted' on the disc in the OEM torque-converter ?? I wonder if there is even any oil-flow thru this lockup-clutch area when it's supposed to be locked up (overheats/cooks oil?)?