Gotta tell you buddy...I've rebuilt several transmissions for people and a few for my own vehicles that's saved me a ton of money and has gave me much pride and some enjoyment in doing the jobs myself but I owe it all to good people like you that has taken the time to walk us through it and back on the road happy ...we couldn't do this so easily without you so thankyou thankyou and much respect and wish you well ..keep the videos coming because you help more people like myself than you know...

Hey mate, that is awesome. you have saved me so many issues and made my rebuild so easy. Once again thank you

It is easy to see why the trans needed fixing with that "engine oil" in it. I have a 2012 Holden Cruze which I have only had for a couple of years and it was quite jerky and clunky so I got the transmission serviced. A lot better afterwards and I have just done another fluid change. Shifting like a new one now thankfully. The old fluid had done 90,000 ks so it was past due. Hopefully never have to pull the trans apart in my lifetime but handy to know how it fits together anyway. Thanks

Thank u sir for all ur videos it has been really helpful to me🙏🙏

Thankful for you posting this tear down. Excellent work!

Thanks for the video. My wife's 2012 Chevy Malibu jerked and refused to shift into 3rd. The code was P07bf (Input speed sensor low voltage). I purchased the part, thinking it would be an easy fix. Ended up tearing apart the trans. I was wrapping it up for the night and found a couple plastic pieces under the car that I hadn't heard fall. This video helped me identify the parts and locations. In the morning, I'm going to finish my project. Hopefully, it'll be done raining by then.

Thank you very much... For showing all the parts in details sir... Will contact you in future if any help required.

Hi Gary, I recently assembled a 6T45 GEN1 after a 3 5 Reverse wave plate failure. I assembled it with the updated 3 5 Reverse clutch drum and wave plate saver steel, new steels, wear plates, pistons, rebuilt the pressure sensors in the TCM and fitted a Sonax kit to the valve body. On the test drive it shifted well in all gears for 10 minutes after I reset the shift adaption but I didn't load the transmission up to that point. I was rolling slowly in second gear about to make a left turn at an intersection and applied about half throttle to load the transmission up. Something inside the transmission felt like it let go while in second gear and afterwards, had very little drive in all gears with slippage. Also, the park prawl stopped working. Shifting from D or R into P, a clicking sound could be heard like the prawl was just contacting but not enough to engage. Initially I thought the Snap Ring in the bottom of the case that holds the 2 6 piston return spring popped out of its groove as the problem occurred while in 2nd gear but no, its still in place (it was very difficult to install in the case groove). And maybe the rotating assembly had moved upwards somehow and made the prawl not engage. After disassembly I cant see what the problem is. All snap rings are in place and I cant see any damage to the case or any metal shavings. Could this happen if the updated clutch drum has the older version piston fitted? If so how would that effect the park prawl or maybe that is another problem? Thanks for any advice. Stu

I live in chicago south side. Thank you I just was hoping you knew of something where the training was very good...

I know this is an older video but I just recently bought a 2017 cruze LT automatic and really need this car to get me back and forth to work. I've noticed this transmission is having weird shifting patterns. It seems laggy during shifts, having weird shuttering that feels like misfires(no misfire counters), it hard shifts into 3rd gear sometimes, and after driving about 40 miles, it will start making this roaring sound like a wheel bearing is going out. It was super quiet and smooth today but when I got into town where my job is, it started making this loud roaring sound. I got in it and drove it home after my shift and it sounded quiet and I was driving slow and cautiously and it seemed fine until I pulled into town. I came to a stop at a stop sign (been rolling stop signs to keep the start stop from shutting my car off for 2 seconds), and when I started down the street, it started making this weird roaring(bad wheel bearing noise) and I noticed a smell coming out of the vents, I heard that this trans emits a burning smell when it starts to fail. No engine lights, limp mode, or any codes stored in the pcm as far as I know. I have a 30,000 mile warranty through the dealer I bought the car from, should I be concerned my tranny on my new car is starting to go. Im sure with no codes they wont do anything to rebuild my unit. I also found out they did a 100 point inspection but the guy checked off all of the areas like he was just rushing through it. It has no dipstick, so the only way to check the fluid quality is to drain some out. I read that you need to be vigilant on changing the fluid because the filters are internal and are not serviceable. It has almost 71k on the odometer.

Hi, Gary. Great video! I have a problem with my 2013 sonic's 6T30. Shift between 1st and 2nd gears vice versa is smooth but it wont go to 3rd gear. When in 2nd gear and the RPM goes past 2000, it wont shift, instead it is as seems like hitting acc pedal (RPM keeps going up) but at the same time pressing clutch pedal as if in manual trans. And it will shift back to 2nd gear. And it would stay there no matter how high the RPM gets. Checked the fluid and filter and had them replaced. Checked the internal. But still fruitless.

Great video, I would love to see a followup of a 6T40 being rebuilt from the torn down state you had this one in at the end.

Sonex makes a kit that contains a new wave steel and concave plate that mates together . No internal splines on the new wave plate, so it doesn't dig in the damaged part from the old wave. End play comes out perfect.

Got one of these on a 2011 equinox 2.4l AWD. Is a little slow on the change from 2nd to 3rd. Occasionally, during this shift, the RPMs will shoot up. Seems to work better after it has warmed up. Is this a common problem with a common solution? About 120k mi, fluid is dark. All the other shifts feel fine.

Love this video my 2012 cruz has this problem 1 and 2 just fine no reverse no 3rd

Thank you so much. I wasn't able to find a source for a definitive answer on the transmission filter question if it actually had a end user replaceable filter.

My car is a Daewoo Lacetti Premier 2009 (a Chevy Cruze with the Daewoo logo). I want to install an extra automatic transmission fluid cooler, but I want to know which of the ATF cooling lines entering the radiator is the inlet? There are two lines attached to the radiator. So which one is with the fluid leaving the transmission and entering the radiator? Is it the bottom one “as usual” or the top? Because all I know is that the inlet is the lower line in order to push the air out of the radiator. Please help me with this.

Real clever little transmission. Should have had synthetic Dexron VI from the onset. But, then again, who knows who's right.

this man is a GENIUS

Gary the black plastic is the termostat to keep the oil on side

I keep getting a P0723 and a P0501 which points to the Output Speed Sensor. Is it likely to be this sensor it would it be the TCM failing. The transmission shifts fine until this code puts it in limp mode. Fault only occurs after 1hr + of driving. Fluid clean and at correct level. Any help appreciated.

Great video! I have a 2011 Malibu broke down right now, just waiting on some parts. Had a snap ring & 3-5-R wave plate break and jam up in some parts. I ordered a reaction planet due to gears being chewed up, but the flanges (the 3 flanges with 8 fingers on each) were longer than the one I have and there are more holes. Will this matter? What measurements matter in this case? Also, where do you order/buy your transmission parts from? Thanks

Looks in a way easier to rebuild than a 4380e. Probably the hardest part is getting it out of the car. Same trans as in my 2012 cruze. has 224000 miles might have to rebuild the trans soon

Really liked your video. I'm a builder as well but I have not worked for a big shop in a while as I have a small warehouse I work out of with mainly word of mouth business so I see mostly the common 4l60 4l80 etc not to many newer ones yet. I do build a lot of Hondas and Volkwagens as a lot of builders don't like to mess with those, but just like anything else you have to spend a little time to figure out what makes them tick. As we both know the valve bodies are the main culprit most of the time so I have a big investment in Sonnax tools but it's worth it as the unit is installed once and delivered. I have built a small amount of the 6t70s with the broken wave plate but I have my first 6t45 and was just curious and that's why I watched the video to see what to expect. Pretty much the same as I expected, also I'm assuming those have the same issues in the techm with the pressure switch disc's failing so I know I'll be changing those as well. The video is a little long though could edit the tear down parts with all the bolts to condense it a little but all in all very well done Sir, nice pace on the explanation of tear down etc.

Whats the differrnce between 6t40,45 and 50

Do you know if you can get the green and yellow speed sensor connectors? The lock tab broke on mine. I don't wanna buy the whole sensor.

I have a chevy malibu 2013 lost forward and reverse.. I used additives and that fixed the problem a bit for a while but now is bad again.. Any idea what would be the problem??

Doesn't forcing screwdrivers in the joint damage the sealing surface? Thanks for the video.

Looks like an expensive repair, thanks for sharing

No filter to this transmission?

30:32 >Finally sees oil filter. >It's in the bell housing(?) on the pump. Welp, so much for changing my filter at home.

Hi I think your a very good mechanic no question about that I'd like to ask you a question I have a Ford f150 2009i want to go to a good school for ford's motors do you know of any? I can pay for the training . Just wannabe able to work on my own stuff. Thanks

I have a question for you, I'm working on a 2011 Cruze. My understanding is they made some changes to the 6T40 in 2012 and any 6T40 2012 and up would not be interchangeable. Are there any other vehicles prior to 2012 that would work in the 2011 Cruze?

Hi Gary, Just wondering if you have a full video on the 6F50? 2011 mazda tribute, destroyed 1,2 planetary ring gear and planets. Would you replace valve body when severe contamination exists? or can you clean and reinstall?

I have a 6t45 transmission out of a 2014 Chevy Malibu it brings up to codes before going into limp mode P0700 and P07BF and P0716 I have changed inner and output speed sensor when it first starts up it drives prefect then when it heats up it goes into limp mode change fluids still does the same thing when it sits for a while the check engine goes out then when it heats up limp mode check engine light comes on what do you think is wrong with this thing and also when it goes into limp it shifts really hard and then it wont go in to manual it only drives in second or maybe third

Could you swap a 6T40 from a 4T45? I have a 2007 Pontiac G6, nothing is wrong with my car, but I saw that the 2010 models had a 6 speed trans with the base 2.4L engine. I have the base engine but with a 4 speed trans

Great resource for all us DIYers out here, thanks. At about 22:45 you take out the drum and on the bottom side of it, that snap ring is out and the piece that the snap ring holds in is thus loose (I think you called it a 'sim support'). Same exact issue here, how do you get that snap ring back in there it looks like there is not enough clearance? Also, do you know the intent of the 'sim support' and the snap ring that holdsit in?

well I just rebuilt the trans and now I'm doing the motor and was just wondering if I did everything right since I still have the trans out of there was something wrong now would be the time to find out lol

Thanks Gary busy as hell up at 330 to make us a video happy Easter my friend

Is it cheaper to rebuild a transmission or just buy a used one??

Good

Awesome video Gary! I'm a gm transmission technician at the dealership, seems they haven't solved this problem still, have you worked on any gen 3 6t40 transmissions yet?

Hi there a question my 2011 Chevy Malibu shift's normal but once it shift's into 5th gear it shift's hard what's the cause of that ?

I have the same transmission 6t40 with the same damage, the drum. When Assembly the clutch everything is free. until I install the retainer ring everything locks up I have double checked Everything seem to be correct. Any idea of what could be the course. Thank you in advance

Excellent video, I have a question on these transmissions. I have a 2012 Chevy cruze with a 2czw build,the torque converter won't spin and had to pull engine with trans ,seemed like engine was locked up but it's the trans. I have a known good trans from a 2014 cruze which is a 4bks , can I just change the techm from the 2czw to the known good trans 4bks or are there fundamental differences? Thanks

Ledison From Brazil good Job

I have a 2014 Chevy Captiva Sport(rebadged Saturn Vue) and the thing I question is it rattles like it is in the wrong gear. Like a manual transmission if you try to take off in too high a gear. I am driving at a cruising speed and when I accelerate it rattles instead of dropping to a lower gear. Thoughts?

Eek the prices to rebuild - as a shade tree I go to pick&pull and buy for $150 or eBay for $350 w/ a short warranty. Then I might pay $600 to replace. Lucky so far since all worked for years...

Hi fault with my box no reverse and only drives in 3rd no fault codes the dealer replaced the computer (Tcm) I stripped the box as to your video nothing any ideas also do you have a rebuild video so a put parts in correct order thanks nick

please give your Opinion how do you remember all these stuff how to re-assemble? on every Transmission do you also follow some Instructional Paper/Book?

Hi Gary, great video. I have a 2011 1.4 Cruze automatic(6T40) with 40k KM. The AFT fluid was changed last year, no burnt smell. Got the code-"P0776 Pressure Control Solenoid Valve 2 Stuck Off". I was thinking of replacing the solenoid valve myself. Could there be mechanical damage also? There is no rattling noise , I only have gears 1 and 2. Any way to know if I have Gen1 or Gen2 Solenoid Valve without opening the transmission. Thanks

Hi there great video. Is it possible to change the output shaft speed sensor while the trans is in the car? My speedo is erratic and was told to change the output speed sensor by the dealer. Thanks

atsg manual shows dots on pump gear assembly , but mine does not have them I'm not seeing a wrong way to put this back together besides the beveled side being in the wrong position. My service manual shows no dots either for pontiac G6 2010.

Hey I got a 2012 sonic that’s getting the 6T30 trans rebuilt now at 80k. What frequency would you recommend changing fluid in it? I’ve heard ever 45k? Thank you !

What is the trick on re-assembling the 2-6 piston assembly, I've compressed the return spring as the illustrated in the manual but the snap ring doesn't lock in place?

Do you have to have a re-flash done after repairs are done on the transmission?

Best way to get this out of the car?

Good video. I am working on my first of these. (Same waved plate broke and the snap ring popped out.) Putting it together, my input sun gear has what are apparent directional markings. The one mark is on the inside recess of on one side of the gear and also there is a narrow groove nearer one end of the gear, on the teeth themselves. Is there an up or down on these input sun gears?

Gary, great video of the tear down. I just bought a used terrain (2011) w/ 87k miles. 3 days later 3-5-r went out! Thankfully the dealer looks like they are going to take care of the bill for a new transmission! My question is, since the filter isn't serviceable, and I want this vehicle to last a great while, would it be a good idea to add a external filter of some sort? Would it help or think maybe Cause more problems? I'd greatly appreciate any recommendation you have. Thanks!

Hello Gary, I have a 2011 equinox 4 cyl fwd that has a bad transmission. I took it to the transmission shop and they quoted me around $4k to rebuild it and install a few upgraded components. I can purchase a reman trans for $2k and try to put it in myself. Is this a viable option? Is there any programming that needs to be done? Thanks

What do you think would cause this transmission to jerk a little when being put into drive when cold? Seems to go away when warm. Maybe an engine issue? 2011 Malibu 6T40 with 120k miles on it. It has been flushed at the dealer before.

So in essence, you can use the damaged drum over.

The ATF coming out of the 6T40 on your work bench looks black. I bought a used 2012 Malibu and did 3 drain and refills at 65,000 miles. I 'm sure it was the original fluid and it was black. What's the original color. All I've ever seen is bright red.

Is this transmission reliable? How long does it run?

Man you know your business

How much would you charge to do a 6t30? I need the pump filter replaced and pretty much a general rebuild of whatever is broken. It shifts fine but the pump whines because the filter is clogged so its probably gonna kill my clutches and bearings.

Is the 6T70 heavier duty?

Please tell me , where is the VSS located? I know the input and output speed sensors, but where is the VSS (the speed couter's sensor)?

Olá tudo bem? Parabéns pelo belo trabalho!!! Top.

I have a 2011 cruze with the 6t40. It goes from 1st to 2nd a little rough and has a huge delay into all the rest of the gears. It will rev freely between the shifts then finally completes the shift. Reverse also takes about 4-5 seconds to engage. This all started with an occasional extremely hard downshift from 6th to 5th. Any ideas?

Transtar's rebuild kit with the steel plates do not line up, Do you ever have to file them to fit?

I have a 2011 equinox with a 6t40 in it. Just bought it off a friend and he's saying the dealership told him its got a bad tcm. It drives perfectly fine until the car is warm and then it will go into a limp mode where the car takes an extremely long time to accelerate. Does this sound like its actually a bad tcm or does it sound like a different issue? Ive been hearing the 3-5-R wave plate is the most common issue with these transmissions

If I do have to replace the transmission in my 2011 equinox 2.4L AWD, can I use any trans from 2011 up that connected to the 2.4L?

Hello just wanted to ask if you know if you can use a chevy malibu in a chevy equinox by changing the techm they look the same to me

Is it possible to get the transmission out of a 2015 malibu without removing the engine to replace it.

These FWD's will squeal the tires off the line in these Malibu's on a hard takeoff.Especially with Goodyear's tires Its gotta be hard on the first/ fifth clutches. I pull over the white stop strip if I can, they seem to make the wheels spin too easily..If it starts to squeal I let up and coast a foot or two. That slows the tires down. I just got new BFG's and they are a lot better on takeoff. Gotta really get into it for the BFG's to squeal. I bet the person who's trans went out drove like a idiot! .

What sealant do you use when re-assembling?

I was driving my.malibu 2011 and i heard a metallic gear noise, when i stopped at traffic light the car wouldnt shift in 1st or reverse. Any clue? Its a 6t40

I tore into mine and it looked like a grenade went off. All kinds of busted and scarred up stuff. A rebuild wasn't going to happen. Had to get a new trans.

Hi Gary, question for you if you don't mind. I got a Chevy Malibu ltz 2008. I started having issues with trans like 6 months ago, it kicks/jerks between 1 to 2 and 2 to 3 gears and had some weird noise in reverse. The trans broke down approx 3 months after that. I took the car to a shop, so we agreed to rebuilt. After 2 weeks in shop, car was "ready", we gave a test drive and trans did not shift gears after two blocks driving. After couple days more in shop, mechanic said I had to replace the valve body with all solenoid on it plus computer. He said I cant replace solenoid separate on this car but the whole valve body including computer and reprogram it. After 10 days he replaced it and reprogrammed it. The car last in good shape like a week and started jerking in 1 to 3 gears and sometimes even slipping gears at higher speed. Mechanic said maybe the valve body was defective and need to get a new one from dealer. Two more weeks, he got a "new" one and reprogram it according. First two days car was ok, after that the car started again with same problems. After two months and $3,000 the car is still with same symptoms as just before it broke down. I am thinking the guy never really replaced the Valve Body for the car still shift hard and jerks between gear 1 to 3 either up speed or down. At this point I am done and I am taking the shop to court to recover the money. But out of curiosity, can a valve body be defective twice, new part from dealer?, can the problem be the programming?, can the solenoids be replace individually?, what are the damage to hard part after all these hard shifting?, where do you think the problem comes from, electrical or mechanical?. Thanks Gary for any help on this.

What tests are made before re installation of transmission?

I thought u check the fluid level with car running am I wrong?

Can you put a 2ed gen transmission in a car that had the 1st gen transmission

Big job to access filter

What does a rebuild cost and why is this unit more reliable than the 6F35?

Got the transmission rebuild finished and installed and the TCM programmed (AT LOCAL GM DEALER) with no external leaks, but I have a no movement in any gear? Fluid level is trickling out level plug at running temperature with car sitting level like the service manual specifies. Line pressure is 57 psi in P, 88 psi in R, 57 psi in N , 72 psi in D. The pressures seem low from what I read?

28:12 Transmission Range Sensor/Neutral Safety Switch

Hello, good vide, but i have a one qustion, Where is the oil filter?

At 30:50/1 above his thumb there is a rubber plug on the bell housing anyone know a part number for that? Thanks

rev out in D and no reverrse what to do

Where do you get your rebuild kit from?

Hello, I have a 6T35 gearbox in my Opel Astra K with 1.4 Turbo 150 hp engine. Is this very similar to the 6T40 we see in this video ?

Hello I have the 6t45 out of the 2014 malibu with 70k miles. While shifting from 2nd gear to 3rd gear there is a jump in rpm. Sometimes a 2000rpm jump other times a 300rpm jump. What would be my best option

what the torque spc

was wondering do you have a video for a 2000 Mazda MPV

hello Gary we have a question we are working on a 6t40 and we have gone thro it and we are have a hot mode problem if you have any thought it would help thank

Speed sensor can be service on equinox?

How many miles were on it

Why was the tcm replaced on this repair?

Gary do you have a video if this trans going back together the diagrams on thus one just don't make since