Ive been waiting a while for someone to bring forward something about the cause in detail, its good to finally see what is going on in there. Cheers guys

I just love watching your work on automatic transmissions. First, find the issue and upgrade the new parts. A real professional team at work.

Watching from the states, amazing video and explanation on the 6L50! Great for consumers to be guided through these complexities.

And people always seem so surprised when they get the bill for not servicing their transmissions.........There's a lot going on in there. Top work gentlemen.

TCC shudder is becoming common on everything, because the fluid is thinner, and more slippery than before, and the friction modifier blend oxidizes out faster, because these units are all clutch to clutch shifted and the regulation valves are moving continuously in their respective bores.

That's the most attention I have ever payed to any video. I have one of the formerly mentioned vehicles that's had 2 torque converters and is causing chaos again. Rocket Rod, we'll certainly be in touch

I guess my Colorado will be coming for a visit, great video guys I’ll definitely be in touch

Thanks for the video...great work guys

Great informative video boys ,well explained. The reason why wholesale Automatic Transmissions has a great reputation in the industry.

That's interesting. I was a mechanic working for Holden. They were stating it was a torque convertor fault. We where only instructed to fit new ones. I wonder if they new the route cause and didn't acknowledge due to costs???

Great video boys, very informative. Keep up the good work.

Good to see how much autos have changed over the years, not as easy to work on as the old trispastic. Keep it up rocket.

Damn good video lads. It’s good to learn one thing everyday

I have a 2014 Colorado LTZ 4wd. Lots of very heavy towing since brand new. No problems 180K trans serviced by dealer 3 times so far. After 2014 a different transmission was fitted to Colorados and this clearly has been less reliable for many. Great that you are able to fix the problem properly. These are excellent reliable vehicles that are very capable. Money on the transmission is very well spent especially when you look at the cost of a new vehicle these days.

Very well explained guys.

That was so informative Rocket, you guys really do know your stuff very educational to someone like myself, thank you so very much for that, looking forward to the next one, See a sneaky Snatch hoodie walk in too, miss you from those old trips too

Excelent video on what can go wrong and what needs to be fixed.

Glued to the screen and autos always fascinate me with their complexity. Your cooler and Nonad valve body upgrade was the best money I spent on the car .

The over pressure from the worn valve will normally blow out the discs on the pressure switches to the TECHM too.

Great video lads, I'd hate to know the cost but to upgrade

It would be great to know what readout you were looking at on the road test. Can I see this on an OBD 2 reader? Great video and info.

Nice work.

Gday, how did I miss this upload, very interesting really, I’ve never seen inside a torque converter before and there’s more in there then I thought, great informative video mate, cheers

Good info., looking to purchase a Colorado so even better info.

Holden dealers are carrying out a triple flush before replacing any parts. Most of the time that seems to work.

Remember. We can’t multitask ON PURPOSE 😅. Don’t let our women ever find out that we actually can. Great video, boys 😊

What year Transmission? I have a 2017-MY18 with 133000 km wit no shudder at all yet. I bought a cooler from you a year ago and asked at the time about transmission upgrades but there weren’t any. Cheers for the ongoing R & D for us Collie owners. I’ll be calling tomorrow to get pricing on the upgrade. Cheers Gaz

Hey Rod.. I work FIFO I can leave my 2018 Colorado Auto sit for 3 weeks some times.. I idle the car for a good 5 minutes before I drive off for the first time.. but when I put it in Drive and start to roll forward it can take a good second to build up drive and finally start moving.. it's fine after a week.. maybe 2. very much more prevalent after 3.... 140k on the clock has always seem to happen.. only ever noticed this in the Colorado

I’ve had your twin oil cooler setup for over 80k and not 1 drama. On my second oil change and tow a 3 ton van around. Nothing over 85 ever. Cheers

Love these videos. It's so good to get to see the innards! My Triton has a factory ATF cooler, but I'm always very conscious of ATF temps and monitor them when driving via obd2. What is the general opinion on what constitutes "too high"? Mine measures at two locations, the carter and the oil pipe. I've only seen it reach 104c before, max. That was 2nd gear up a really steep hill with the camper trailer on the back. Generally it's 80-90c. Cheers for the content. Keep it up!

Love your work, finally a proper explanation to this problem, i have a 2018 colorado, 200k km with a cooler on it, its not bad but definitely doesnt behave properly considering i mainly use it to tow, what kind of money am i looking at if i send you the trans and converter out of it to get all the fixes done and your upgraded converter?

The standard tune will still let the TCC let to a desired rate which also needs to be corrected..

I have the vehicle you described and the shudder issue, have had it back to the dealer/stealer and each time no fault found and for me is getting worse. It's still in warranty till the end of the year but they choose to do nothing, the truck itself is great for what I do just need to sort the shudder out😢. Great job fella's what sort of $ to have this sorted, might be worth the road trip

I had 07 ve sv6 about 230.000km and shudder auto I was quoted $5000 to rebuild didn't have the money didn't want but sold it to the wreckers

I have the 2015 Rg and this wasn’t an issue. What changed in the the facelift models too start having this shudder?

Hi Rod, something I would like to understand is why were are not seeing the same consistent issue across all gearboxes. I definitely acknowledge there is a fundamental issue with the valves as I am part of a number of groups where people are having issues anywhere from 20k up to 100k and beyond. I have a 2017 trailblazer, so just after the pre-facelift when the issue started to rear its head. I wouldnt say its had an easy life. I have towed caravans on the very limit, have done what I would consider somewhat serious 4wding enough to push the car to its limits with lockers as well as a lot of beach driving. I have had the TB tuned, bigger tyres and higher lift basically everything you would expect to considerably put more stress on the transmission. The car has 182k on it and have had a few issues but never a transmission shudder, which I am very surprised. I have done 2 transmission services on it and installed one of your coolers at around 90k. Given the history of the car I thought it would have been a prime candidate for the shudder. I have considered it is maybe shear luck, but I am stumped as to why it hasnt developed the shudder, other than possible inconsistent QA/QC of the valve hardness given the wear you are seeing in other gearboxes. Do you have any thoughts on why this issue is seen in basically soccer mum cars with low kms versus high km hard driven cars?

We're have you guys been. Anyway when are we going to see more of the rebuild of you land cruiser and We're still waiting to see some 4x4 trips

Low pressure on the clutches? Just a guess before watching the vid.

great job guys,have that trouble now on my 2019 Z71 they are going to do a band aid fix i think , have been chasing the cause for while now so informative , need help ?

Awesome video thanks do you have a shop near Newcastle nsw

Good job as always Rocket! Just curious.. if the valve body is worn then wouldn’t the opposing surfaces inside the housing also be worn? It just seemed to me that only half the problem is being solved by changing all the valves.. but I’m not a gearbox specialist just a mechanically minded guy..

Can you please advise.. The new valve has longer landings has the corresponding bore where the new style valve goes into have the longer landings ?

Hey Rocket, nice in depth video on what the actual problem is as Holden are just doing these so called triple flushes to cover the issue until your out of warranty and they kick you out afterwards. I have a question mine has 111,000km but never experienced the shudder but flairing would this be the issue for that as well?

Great video as per usual. Ive just had this happen to my colorado and holdens current warranty fix is to tripple flush the fluid. Are you able to explain how this could possibly fix a mechanical problem like any of the ones you mentioned in the video?

I just had the torque convertor replaced for the shudder....good to know for next time

would you guys sell these in a kit? live in qld sadly

I had my whole auto replaced because the clutch that does 3rd, 5th and reverse had shat itself, does that sound right guys.

Do you guys know what changed between models that caused the issues?

Can u guys do a vid on the Y62 box please

My 2020 Colorado has that same shudder sometimes and I definitely feel the torque converter slippage between the lower gears as you push on off the mark, I usually back the accelerator off a bit to not put too much pressure on it so it can shift up better, but yes, it is a P.O.S of a transmission. Your upgrade sounds expensive though, but what choice do we have when the manufacturer dumps a bad design on us. I don't think my car has any more warranty either. Even if it did, what would they do anyway ?? Replace the torque converter or that valve for a short term fix until the car well and truly runs out of warranty, then they can tell you to go get stuffed after. What a disgrace. No wonder Holden went out of business.

Thanks for the information. I’ve got a 2.5 diesel Chevy Colorado doing exactly that. I am in Thailand. Can I buy the valves from you??

Rod, do you know if Holden/GM has updated these valves on more recent 6L50 transmissions? I had the shudder as well on my 2019 ZR2 diesel colorado and GM is replacing the whole transmission with a new unit

Amazing vid. I am at 75k and have had the shudder for about 5k klm. What would the price be for one of these rebuild? I am in Lilydale. It's hard enough trying to get warranty to sort it. Being an Ldv t60 (but I'm 99% sure it's the same auto as the Colorado)

Just wondering if the guy in glasses has been to the doctors about his shoulder twitches?

Interesting that another automatic specialist in SEQLD believes the issue is the valve body and provide an upgrade kit.

What price am I looking at to get this upgrade? Your shop is about to get swamped with calls from Colorado owners, probably questions from legal companies too due to possible court action 👍

When does the shudder occur? Highway speeds? Uphill? Underload?

Where can i buy the upgraded valves from ?

Do you do change over transmissions ?

Hélio Somos do Brasil gostamos do vídeo da explicação da válvula da transmissão 6L50 att ANTERO MATIC

Why doesn't this issue present itself in the 6L50 VE commodore? Is there a difference?

Whats the cost for the full kit? , i have a 2016 Colorado

Whats the cost of these upgrades?

so can someone send this to all dealers that sold colorado,s, so owners have a better chance for warranty work, also ive asked about fitting one of your coolers & my dealer believes I dont need one, who do I believe

Is this the same box as the Craptiva ? His auto refused to move at 175k km i said go back to Holden

How many dont have a problem?

⁠the service interval for the autos has been “revised” by Holden to the 72,000km or 75,000km interval depending on what schedule your car is on Not that that will fix the problem 🤷‍♂️

Single sided plates are a failure

So complicated.

From a mechanic What a stupid idea isnt heat a computer killer Makes as much sense as putting an electric fuel pump in the petrol tank Engineers. Thinking that they ar clever

Looks like GM doesn’t make anything better over your way then here in America. I’ll stay with Toyota.

complete witchcraft I tell ya! ;)