Thanks Gary, I started this year trained on how a transmission works, but had 0 practical experience inside of one. I am about to go for my third. You are very good with these videos and I hope you keep sending them out.
I wanted to change the filter in my trans as well as a fluid flush, but after seeing just how deep it is inside. I think I will just do the flush. Great Video
I have a 2016 impala and wondering what I can do to keep it going well with no issues. I don’t race and don’t drive erratic. Just want to know what steps to prevent any problems down the road.
Nice video with lots of great tips... I bet the last rebuilder just did a "back half" with the trans still in the car. I see them like this from time to time.. I had another trans shop tell me they always did these units in the car until one came back a week later with the same symptoms as the one here in your video... 40psi line pressure from a clogged filter.
Can you do Rebuild videos for 6T70, 6T75, 6T80 Gen 1 and Gen 2? Also can you Show the Weakness and GM Updates, and Sonnax improvement Parts? Since Sonnax makes Improved parts it would be Very helpful to See what those are, and See why the Improved parts are needed. It would be Better for us to install Improved parts. . .
I need to rebuild my 6t75. Slow engagement into first gear but instant in reverse. Found if I left it in drive as warms up it engaged and was perfect all day long even after shutting off and restarting after cooled. Every day it got longer and longer to engage from ten minutes then increased to 20 to 40 minutes, then finally I could not get to move forward even after doing this for an hour. I changed the valve body but I think I burned the low clutches out. What set of clutch pack should I see burned if I had reverse and no forward gear?
I like your shop. It has that classic old window setup and everything is stained from years of hard work. Reminds me of my grandpas shop. I've always drained our 2010 Acadia transmission and refilled with about 5 quarts (always put in what came out and checked when hot. I know it's not a full drain but it's half anyway) each year. I'm at 133,000 miles and the trans seems fine. On this last change I put in a bottle of Lubegard in place of 10oz of Dexron VI. Hopefully it will keep going strong but I'm starting to worry about my 3-5-R waveplate. Do you think it will survive to 200K if it's made it this far with annual fluid replacement?
Gary I have a question for you I have the same transmission running in a 2012 Chevy Impala I get a message on the dash saying transmission hot put an idle should I get flush out the radiator transmission cooler and put an external transmission cooler on this application or should I just bypass the radiator transmission cooler I've read a lot online and I'm not really sure what the best scenario is can you please help me I'd really appreciate it thank you 🙏🙏🙏
@ Gary Ferraro . Hello again. I have 1 quick question on this transmission. When getting a TEHCM from a used transmission with the cross-reference #242 number. Does it need to be programmed? And if so does it need a VIN# to due so? I know new ones do but if its from junk tranny im not sure on it. Thanks for your time and for helping me with my 42rle issue.
I took mine apart (IN the car) to change the cracked wave springs.. And it shifts fine, but makes a whining power steering type of noise.. Im worried that I dropped a thrust washer or something as I was re-assembling it (I used assembly goo). Also at certian part load driving situations I get a shudder that almost feels like a miss. I have no fault codes
You mentioned that this was your customers 2nd trany are these reliable? I’ve read they can overheat easily. Any advise how to prevent that? Like an additional cooler or larger oil pan?? Thank you sir
GM and Ford really got carried away in the stupid department sealing off these transmissions!!! It seems the only way to keep that screen and magnet clean is to do a flush at every fluid change. Which would probably have to be done at much shorter intervals.
I enjoy learning from an expert. Great video! The video quality needs to be better. I have seen pointless videos with better quality. Your instructional Videos deserve better video quality. You have a new subscriber in me.
Not too many people are as descriptive as you when posting a video. I have the same 6T70 tranny in my 2012 Buick LaCrosse 3.6L VVT , and when I am cruising/driving @1500rpms or 35-40mph, I feel a vibration in my gas pedal. When I go higher speeds on the highway, I don't feel it at all. When I do feel it, I depress the gas pedal so it stops & repress the gas pedal to go past the1500rpms, and am at wit's end trying to figure it out. All the local shops around here want to charge me $400.00 and up just to diagnose it. Any helpful direction from you would be greatly appreciated, mate.
No codes ...thats par for course with gm. why the he'll they put tcm inside trans mission is a dumb idea. seems like these transmissions are common for ALOT of issues.
I have a 2009 chevy equinox 3.6l and have code p0752 and p0700 it don't come on all the time just every once and while. Sometimes sooner sometimes takes longer. I was wondering what you think it is causing it.
What type od scanner are you using to pull the codes, I'm asking because there there may be more codes present in the trans. Do you feel any thing while driving the car?
thought mine was bad in my '12 impala. torque converter was stalling engine when I come to a stop..was a code for bad battery.put in New one as battery did test bad (365cca) on 600cca battery. have now driven car over 150 miles with no problems. found out that bad battery can indeed cause trans problems with voltage fluctuations to tcm.
Yeah I had a 3 year old battery in my 2009 Malibu. It was shorting out the wires to my headlights, and burnt out my front door speakers. After the new battery all of the electronics and performance of the car smoothed out. And the speakers came back
I have a 06 SX 2.0 when I put it in gear the transmission sometimes will drive then it will rev high stop moving then will drop in to gear was thinking it could be the filter and shift silanode
my 2013 Impala makes an odd noise below 4mph when turning left mostly , like a shudder type feel! , other than that trans drives perfect,,any idea what i may be looking at?
Great video, just took mine apart and it was very helpful. Had the same piston issue and one bad bearing 215k on a 2014 ( gen 2?) I have one question, what rebuild kit do you recommend that has all those seals you pointed out, or do most rebuild kits already have everything you would need.
@@GaryFerraro maine, however I just checked that 35r piston and it moved fine under pressure, so now have no clue what caused the same symptoms, over revving not shifting to third and basically losing reverse (barely moving) directly after trying to shift to third. Let it sit after being off and I get reverse back but only until it tries shifting to third again. One worn bearing and a few small heat spots of some of the steel plates, but otherwise everything looks fine.
Is there anything in those that would clunk, for lack of a better word? So my best explanation is it's like a driveshaft with play in the u joint. So it clunks when ya let off the gas at say 30mph. It clunks again when ya pick up the gas. I mean if you're real light and smooth on the gas, but I'm usually not that smooth. I'm pretty sure it's in the transmission. I hear it when it shifts sometimes. I've tried to recreate it in my garage. I've powerbraked to see if the motor moved, like a motor mount. No real movement. I jacked up the passenger side and move the tire back and forth. I can hear a clunk and it sounds like it's coming from inside the trans or maybe the housing that comes over to the passenger side. Anyhow I'm not really sure. Any ideas? It's a 2013 Impala with 90k miles. No other trans issues. Doesn't slip or anything. Cv shafts don't seem to have play or be a problem either. Thank you in advance.
Hi Mr. Ferraro, I have a 2007 Saturn Aura 3.6 with a transmission issue. I replaced the transmission 3 times & all replacements had an issue. The first would not shift above 2nd gear, the second transmission does not have reverse and the 3rd transmission takes 1st gear only. I thought about purchasing a replacement transmission from eBay but I don’t want to end up with another busted transmission. What do you think would be the best possible route? Maybe a transmission overhaul kit? If so what parts should I replace, I would much rather to put the original transmission back in the vehicle. With the original transmission I hopped in the vehicle one morning and it would not take drive but the reverse is working fine. Also where can I purchase the overhaul kit if this is the best option? Thanks a lot any advice or assistance would be very appreciated
@@GaryFerraro The original transmission was not taking any of the drive gears, when it’s in drive it does absolutely nothing. But the reverse gear works fine
Mr Ferraro fantastic video Sir. I have a 2010 fwd Cadillac SRX with 130k. with what I believe is a 6T70. we bought it used and I changed the old trans oil immediately with Valvoline MaxLife high mileage dex 6.The old oil that came out smelled fine and not burned and was still redish. It tends to shift hard from first to second a little hard under light throttle load but with more throttle it shifts fine. is this normal or do I need to look a the valve body? I don't see any codes when I use my obd2 scan tool. also is the oil I used good or is there a preferred brand and type you prefer. I believe in changing trans oil annually or biannually and we don't do alot of aggressive driving and are easy on or cars. besides the hard 1 to 2 shift the trans works great any advice or recommendations would be greatly appreciated. I do all my own work from restorations to engine rebuilds but I have next to no experience on automatic transmissions I have rebuilt plenty of t56 and other manual transmissions. Again thank you for the great detailed content and sharing your vast knowledge Dave
I found this GM diagnosis report do you think this is relevant? gm.oemdtc.com/6800/6t706t75-transmission-assembly-with-harsh-1-2-shift-with-no-dtcs-2015-2016-buick-chevrolet-gmc
What i would do first which is also the easiest is to confirm no codes in engine or trans, then i would reset shift adapts, you will need a scan tool for this, also car has to be a certain temp for the procedure to work, cant be to cold or too hot
I have a question with techm I have 2010 Buick enclave it slipping a little from 3 to 4 will not slip all the time someone said it probably the techm wanted to replace it for $1100 could you just replace the switches on it has no codes in transmission only other thing it's done one time is stuck in 2 gear till I put in park then it shifted fine it been parked for 6 months and drove it the other day shifted great has 142000miles what do you think I should do
Hello Gary I have a 2007 acadia 2wd currently I'm getting a code p0700 other is p0752 shift solenoid stuck on what do you think could be different causes of this code if not solenoid what else should I be looking for. It drives fine when I erase codes so makes me think it's not mechanical. Once I step on gas WOT it won't go past a certain speed and codes pop up that I listed above accompanied by p0989. Once I erase codes it works fine again any thoughts
You have pressure switches on the TCM, those switches are no good, you either have to replace the laminate disc and seal for the pressure switches or get a new TCM. Tcm is located inside the transmission
@@GaryFerraro Thanks alot for the quick reply Gary I really appreciate it I definitely will be taking out the tcm and checking those pressure switches. If they are fine could it actually be the solenoid itself ?
@@MustangFourSix With those codes no, you will fine those switches no good, you will see the disc out of place. If you wanted to fix it, the Laminate disc and seal will have to be replaced, aftermarket company called Sonnax has the kit with the tools to fix it
Curious as to your thoughts on the Gen 2 6T70 transmissions. I'm highly considering an 2018 Chevy Impala which has this transmission coupled with the 2.5 ECOTEC LCV. I know high trans fluid temps are responsible for a lot of the issues, so do you recommend a trans fluid cooler if I were to go ahead with a purchase? Thanks!
Gary, you won’t believe it. I have only 50k miles on my 18 Impala with the V6. They’re taking it in because of a torque converter shudder. Should I trade this car in? I’m confused because I see some for sale with 150k-200k miles for sale. What am I doing wrong? Hard accelerations? I hope they replace the whole transmission and not just the converter.
Where can I find the steels and frictions for a 2008 Malibu 3.6 with the 6t70 I plan on replacing them but want to know if you’d recommend a good quality set of steels and clutch’s
@@GaryFerraro it shift smooth going threw all 6 gears but when I press the gas the transmission is jerking to change gears but I have to press a little harder on the gas and I’ll shift , But when I put it in manual mode I can down shift and up shift just fine . is this a wave plate or pressure switches , valve body
Gary quick question? Do I have to reprogram the TCM after transmission rebuilt? Because I'm just done with my transmission and it's acting funny 😥😥. What is possible wrong?
If you did not change the TCM then no, if you installed a new tcm then yes. If the tcm is the same, try resetting shift adapts. What is it doing? any codes?
@@GaryFerraro thank you, but it wasn't anything with the transmission. My engine was the problem I'm sorry for not answering quick, but now it's fixed. Thank you for your helpful videos and also your help. God bless you.
I'm having trouble with my lacrosse twice now giving me the transmission. Overheating, idle engine warning. It has 169,000 in it but has been serviced two different times since I've had it. One of the ailments I found was the fluid temperature sensor. Trying to figure out exactly where that's at. If by chance you get my question is there any advice you could offer me. Thanks so much
@@GaryFerraro yes, I work at an advanced auto parts my dad is helping me who knows alot about rear wheel drive tranny's but limited knowledge on front wheel. Back to the codes. It actually showed no tranny codes whatsoever when I checked them this morning. I recently replaced the catalytic converters and 02 sensors and I had codes from those that I cleared. Only other code I had was a knock sensor code and a crankshaft sensor code. Replacing the crankshaft sensor while having it torn down. Read a reddit post where another guy was having the exact same issue with his car and it was finally diagnosed with a faulty TCM. Your thoughts?
@@GaryFerraro also have replaced the radiator so slim chance of the cooler not working properly and less that 10,000 ago the CV axles were replaced and new fluid added also. Just thought of these things
@@peeholio3260 Could be a TCM sure, Have you monitored the Temp sensor? I also want to make sure there are no Torque converter slip codes because that can make a temp code appear as well. As the converter slips, it generates heat. Im off to sleep but will check you in the morning for any reply you may have left me.
@@GaryFerraro no slip codes. Car runs perfectly around town and so forth. Get out on the interstate around 70/75 and it has thrown the warning now twice. It will down shift hard. Other than that she runs perfectly. Shifts out and downshifts like normal. Thank you and that's fine on tomorrow. I appreciate any help. It's really a walldinger, scratch your head ordeal.
It probably could be, the drum is right behind the rear cover, but you may have to disconnect the input speed sensor to remove the cover, i actually never did the repair with the trans still in the car, there may be pieces make sure all is clean
Really good video. You have no idea how many you have helped. 6t75 i have 1/4 gap reinstalling side cover. Any ideas why? Ive checked 3 times it just won't close correctly
@@GaryFerraro Thank you for response. Gasket is lined up. Would the transmission being in park have anything to do with it. I just replaced frictions and wave plates by dropping frame.
Gary Ferraro ok thanks. Yes changed it 3 times to flush it. I did it maybe 5000kms ago. Where's the t.c.? I must have missed it. Thanks for the reply. It's a 2011 Acadia
Gary Ferraro ahhh right. Was confused with this being FWD. Are the 2011 transmissions common for having the wave plate failures as well? Thanks for the replies! !
Great video! Can you tell me if the input speed sensor can be replaced without pulling the back cover? I have codes p0700, p0756 and p0717. Points towards input speed sensor and shift solenoid 2-3. Can these repairs be done in car? '09 Chevy Equinox sport. 3.6/V6 AWD
@@MrRivera88 ok, this is an early model, 3 things can cause this code to show, 1-a bad input speed sensor 2- a bad TCM 3-a broken 3-5/rev wave steel. I would clear all codes out and see what comes back. When you drive the car do you feel anything?
@@GaryFerraro It started with a hard shift in the morning. Later that day wouldn't shift from first. Fluid was down but didn't smell burnt and color was pretty good. Topped off,cleared codes and re drove. All codes came back and now had a bucking when moving in reverse. The last symptom was new.
hi sir. I am wanting to learn more on rebuilding transmissions. I am taking a class on transmission rebuilding fundamentals. I have a couple of transmissions to rebuild and tare down and put back together. I have 2 questions right now. 1. where can I get parts to rebuild them every place I have tried to find is retail price. 2. looking to get tools for doing the work to. I know snap on has some and can I get a list of tools I might need to start please. thank you
I would say, metric socket set, speed handle, metric wrench set, screw driver set, pliers, to take the transmissions apart you also may need air tool, 1/2" impact wrench, 3/8 impact wrench, thats a good start
Gary, great video. I have a 2007 pontiac g6 GTP 3.6L. I had no reverse and only 1st and 2nd gear. I changed the transmission with one from an 2008 monte carlo. Everything shifts fine and no codes at all. The issue is my speedometer won't read over 25 mph when I am doing 60-65. The cruise won't work till it reads 25 mph then works. I was told that the g6 and monte carlo have different part numbers for the VSS. I still have my old trans and would I need to swap out the TCM/Valve body and speed sensor? would that remedy the problem you think? I have the 6t70 trans. I was told to replace the cluster and I did and same issue. scan tool says no communication with the cluster also. Any ideas would be appreciated. I took it to a transmission shop who put their tool on it. shift signals were fine and speedometer read 17mph and scanner read 42 mph.
@@GaryFerraro No I didn't I bought it off ebay and they have the chart thing where you put in your car info and it tells you if it's compatible or not. I can't go back into ebay and get the actual info cause it was a few months ago. I just did a scan and showing 0 DTR codes and 0 TCM codes. I am at a loss. I was also just checking on ebay and the 6t70 gen 1 trans won't work so it must be the gen 2. The speedometer did work correctly before I replaced the trans.
Hey man thanks for video i have same transmission for my malibu 2013 2.0 and car losses power randomly and lately started to have weird noise when accelerating at low rpm what could be the problem?
@@GaryFerraro yes it is feels very heavy at stops and in high traffic which i cannot exceed 30-50 km speed the car shifts very weird and also has no power when i press the accelerator for 3 years it didnt throw codes but recently it did but i have no idea which codes the service garadge didnt show me unfortunately
When i say high traffic meaning when i stay at stady low speeds car feels horrible but when the road is clear and i can go to higher speed like 80-100km it feels a bit better and stronger
I get code p0752 on my acadia only when I start it cold and if will be stuck on 2nd, but when I erase the code, it will get back to normal, do you think is an electrical issue, thanks!!
@@mightydavid100 This code is a mechanical code, usually means internal problem. Do you feel anything while driving. Common on this trans to loose reverse, 3rd and 5th gears.
@@mightydavid100 ok, si it starts up and it's in failsafe, you clear the code, is the car running when you clear the code? after it is cleared ok for the day correct.
I have this trans in my Impala. Iam doing fluid changes every 15,000 miles in an effort to prolong it's life. A real bummer they put the filter inside the trans. Might as well wait for a failure before tearing into it to change the filter in a rebuild. Bad design.
Awesome video thank you! Do you have to remove the round cover to replace the input shaft speed sensor or can you do it with just removing the square shaped cover?
@@GaryFerraro ok thanks Gary, I'm trying. I got the cover removed so but now I cant get brown electronic device loosen I guess I'm missing a bolt somewhere?
@@GaryFerraro Chevy Malibu 2011 2.4L 6 speed automatic. No reverse. I don't know it's just a solenoid issue or gears problem. If only solenoid, I maybe fix it. But I am not sure on overhaul. Are the replacement parts (snap rings, O rings or clutches) easy to get for a non-mechenic? Like from RockAuto? Thank you for your time!
@@TheLazydavid No reverse, no 3rd and no 5th is the common issue, with a 2011 you have generation 1 trans. Not sure if the parts are on rock auto but where are you located, sometimes I hook people up with my personal parts rep and the parts are shipped to them
@@srvjediknightsrv750 Not that bad to do, common problem no reverse, 3rd or 5th. Make sure you update the wave steel for reverse, 3rd and 5th. if neede I may be able to send you some info.
Hi I was wondering if you can help me I put a new kit in techm oh my 2008 Buick Enclave everything looks good but I put it back on and I cannot shift gears what it seems to be the problem if you can help me I took it back off and I can change the gears but I put it back on and he does the same I cannot shift gear I don't know does it neat program Again it is the original the came with the car I just put it kit on it please let me know thank you
Gary Ferraro thank you for your reply I rebuild my and I put it back on and I cannot shift the gear is stuck in park I took it off again and i am able to shift again then I put it back on again and i cannot shift
Ok, disconnect the cable at the transmission and see if the linkage moves within the trans, leave the valvebody in the car see if the linkage moves with the cable disconnected
I already disconnected the cable and i tried to shift it with my hand but when I take the TechM off I'm able to shift it with my hand and also I put the cable back on and I'm able to turn the key onto on and I'm able to shift the gears but when I out the TechM back on I can not shift at all it seems like it is stuck in park.
I cannot find much on these transmissions. I have a 2014 impala limited with 60,000mi on it. I recently took it outta town, and it kept giving me a transmission hot idle engine message on the dash. Its full of fluid no codes. So i really have no clue what it could be. Bad tcm, bad sensor, maybe the cooling lines, are bad or clogged, thermostat, clogged transmission filter idk. I like my car, The Lfx v6 is fantastic to me but the the transmission is just not good. The morons who programmed it should be shot on the spot!
Thanks Gary, I started this year trained on how a transmission works, but had 0 practical experience inside of one. I am about to go for my third. You are very good with these videos and I hope you keep sending them out.
Thanks for watching, please subscribe, any questions just let me know
I wanted to change the filter in my trans as well as a fluid flush, but after seeing just how deep it is inside. I think I will just do the flush. Great Video
yes, can't really change the filter on these units
really amazing video..full of great information. thanks Gary...
Thank you, thanks for watching
Nice video. Looks like a straightforward design.
You are the man, Gary! What a great tutorial.
Thank you
I have a 2016 impala and wondering what I can do to keep it going well with no issues. I don’t race and don’t drive erratic. Just want to know what steps to prevent any problems down the road.
Trans fluid changes every 50/60k miles. Your owners manual actually recommends this.
There's so many questions about automatic transmission in your channel.
Great video Gary thanks
thanks
Nice video with lots of great tips... I bet the last rebuilder just did a "back half" with the trans still in the car. I see them like this from time to time.. I had another trans shop tell me they always did these units in the car until one came back a week later with the same symptoms as the one here in your video... 40psi line pressure from a clogged filter.
That what happens, thanks for watching
Can you do Rebuild videos
for 6T70, 6T75, 6T80
Gen 1 and Gen 2?
Also can you Show
the Weakness and GM Updates,
and Sonnax improvement Parts?
Since Sonnax makes Improved parts
it would be Very helpful
to See what those are,
and See why the Improved parts are needed.
It would be Better for us
to install Improved parts.
.
.
Greetings from venezuela are very educational your videos thanks
Greetings from New York
I need to rebuild my 6t75. Slow engagement into first gear but instant in reverse. Found if I left it in drive as warms up it engaged and was perfect all day long even after shutting off and restarting after cooled. Every day it got longer and longer to engage from ten minutes then increased to 20 to 40 minutes, then finally I could not get to move forward even after doing this for an hour. I changed the valve body but I think I burned the low clutches out. What set of clutch pack should I see burned if I had reverse and no forward gear?
I like your shop. It has that classic old window setup and everything is stained from years of hard work. Reminds me of my grandpas shop. I've always drained our 2010 Acadia transmission and refilled with about 5 quarts (always put in what came out and checked when hot. I know it's not a full drain but it's half anyway) each year. I'm at 133,000 miles and the trans seems fine. On this last change I put in a bottle of Lubegard in place of 10oz of Dexron VI. Hopefully it will keep going strong but I'm starting to worry about my 3-5-R waveplate. Do you think it will survive to 200K if it's made it this far with annual fluid replacement?
Great video. 1 of its kind. I'll be doing this soon enough.... Thanks
Great detailed teardown....
Thank you
Gary I have a question for you I have the same transmission running in a 2012 Chevy Impala I get a message on the dash saying transmission hot put an idle should I get flush out the radiator transmission cooler and put an external transmission cooler on this application or should I just bypass the radiator transmission cooler I've read a lot online and I'm not really sure what the best scenario is can you please help me I'd really appreciate it thank you 🙏🙏🙏
@ Gary Ferraro . Hello again. I have 1 quick question on this transmission. When getting a TEHCM from a used transmission with the cross-reference #242 number. Does it need to be programmed? And if so does it need a VIN# to due so? I know new ones do but if its from junk tranny im not sure on it. Thanks for your time and for helping me with my 42rle issue.
I do not believe it will need programming
I took mine apart (IN the car) to change the cracked wave springs.. And it shifts fine, but makes a whining power steering type of noise.. Im worried that I dropped a thrust washer or something as I was re-assembling it (I used assembly goo). Also at certian part load driving situations I get a shudder that almost feels like a miss. I have no fault codes
You mentioned that this was your customers 2nd trany are these reliable? I’ve read they can overheat easily. Any advise how to prevent that? Like an additional cooler or larger oil pan?? Thank you sir
Sir, when you removed the 1-2-3-4 piston does the bellville spring tabs face up or down, thank you
Tabs should face down so you can put the snap ring in the case
GM and Ford really got carried away in the stupid department sealing off these transmissions!!! It seems the only way to keep that screen and magnet clean is to do a flush at every fluid change. Which would probably have to be done at much shorter intervals.
Rob Close ? Please explain more by at every fluid change? Like with an oil change?
Great Video!!! Do you have a rebuild video on the 6T70 transmission?
I hope he does and posts it.
Great job Mr.Feraro
Thank you sir
I enjoy learning from an expert. Great video! The video quality needs to be better. I have seen pointless videos with better quality. Your instructional Videos deserve better video quality. You have a new subscriber in me.
Thank you
Not too many people are as descriptive as you when posting a video. I have the same 6T70 tranny in my 2012 Buick LaCrosse 3.6L VVT , and when I am cruising/driving @1500rpms or 35-40mph, I feel a vibration in my gas pedal. When I go higher speeds on the highway, I don't feel it at all. When I do feel it, I depress the gas pedal so it stops & repress the gas pedal to go past the1500rpms, and am at wit's end trying to figure it out. All the local shops around here want to charge me $400.00 and up just to diagnose it. Any helpful direction from you would be greatly appreciated, mate.
Hi, I have the same issue on my 2014. Did you find the issue?
No codes ...thats par for course with gm. why the he'll they put tcm inside trans mission is a dumb idea. seems like these transmissions are common for ALOT of issues.
I have a 2009 chevy equinox 3.6l and have code p0752 and p0700 it don't come on all the time just every once and while. Sometimes sooner sometimes takes longer. I was wondering what you think it is causing it.
What type od scanner are you using to pull the codes, I'm asking because there there may be more codes present in the trans. Do you feel any thing while driving the car?
would this be the same as equinox 3.0 they told me it was 6t70
thought mine was bad in my '12 impala. torque converter was stalling engine when I come to a stop..was a code for bad battery.put in New one as battery did test bad (365cca) on 600cca battery. have now driven car over 150 miles with no problems. found out that bad battery can indeed cause trans problems with voltage fluctuations to tcm.
Yeah I had a 3 year old battery in my 2009 Malibu. It was shorting out the wires to my headlights, and burnt out my front door speakers. After the new battery all of the electronics and performance of the car smoothed out. And the speakers came back
I've never seen so many bolts in my life. I'd never be able to figure out where they all went to put it back together.
LOL, this on actually is not that bad
I have a 06 SX 2.0 when I put it in gear the transmission sometimes will drive then it will rev high stop moving then will drop in to gear was thinking it could be the filter and shift silanode
Would you say it runs ok for about the first 15 minutes?
Gary Ferraro at first it would be. now it is hard to get it to move now.
is it a 6T70 Trans?
Really thorough!! Subscribed!
Thank You
would I need to do this if i just want to change my transmission fluid on my 2015 chevy impala lt 3.6 flex fuel?
Just drain and fill, the 6T70 Transmissions have a dipstick, easy to do
Is this the same as the one out of a 2012 3.6 v6 chevy malibu?
3.6 should be
Great video. How much do you get for this overhaul?
Great concept if affordable for you and customers to receive a video of your work on their vehicle
These units have the computer installed, every one gets a new TCM with the latest software (i program them myself) but these run about 3200.00
my 2013 Impala makes an odd noise below 4mph when turning left mostly , like a shudder type feel!
, other than that trans drives perfect,,any idea what i may be looking at?
is this just front wheel drive or is it all wheel drive?
hi Gary,, 2013 Impala, front wheel drive 6 speed, thanks for the return!
feels like almost two gears at same time. or something releasing one of them?
Great video, just took mine apart and it was very helpful. Had the same piston issue and one bad bearing 215k on a 2014 ( gen 2?) I have one question, what rebuild kit do you recommend that has all those seals you pointed out, or do most rebuild kits already have everything you would need.
You can get whats called a Banner kit with pistons, my kit of choice is TransTec and OE Pistons, Where are you located?
@@GaryFerraro maine, however I just checked that 35r piston and it moved fine under pressure, so now have no clue what caused the same symptoms, over revving not shifting to third and basically losing reverse (barely moving) directly after trying to shift to third. Let it sit after being off and I get reverse back but only until it tries shifting to third again. One worn bearing and a few small heat spots of some of the steel plates, but otherwise everything looks fine.
@@GaryFerraro that wave plate and last (friction disk) on that 35r drum have the most heat spots, nearly all the way around.
@@GaryFerraro only other symptom it had was no speedometer either. No codes as well
@@timicrowley6793 How many miles?
Is there anything in those that would clunk, for lack of a better word? So my best explanation is it's like a driveshaft with play in the u joint. So it clunks when ya let off the gas at say 30mph. It clunks again when ya pick up the gas. I mean if you're real light and smooth on the gas, but I'm usually not that smooth. I'm pretty sure it's in the transmission. I hear it when it shifts sometimes. I've tried to recreate it in my garage. I've powerbraked to see if the motor moved, like a motor mount. No real movement. I jacked up the passenger side and move the tire back and forth. I can hear a clunk and it sounds like it's coming from inside the trans or maybe the housing that comes over to the passenger side. Anyhow I'm not really sure. Any ideas? It's a 2013 Impala with 90k miles. No other trans issues. Doesn't slip or anything. Cv shafts don't seem to have play or be a problem either. Thank you in advance.
I would look closer at the axles, hold the inner joint and move the tire back and fourth to see if there is play at the inner joint
Thanks I'll look harder at those.
Hi Mr. Ferraro, I have a 2007 Saturn Aura 3.6 with a transmission issue. I replaced the transmission 3 times & all replacements had an issue. The first would not shift above 2nd gear, the second transmission does not have reverse and the 3rd transmission takes 1st gear only. I thought about purchasing a replacement transmission from eBay but I don’t want to end up with another busted transmission. What do you think would be the best possible route? Maybe a transmission overhaul kit? If so what parts should I replace, I would much rather to put the original transmission back in the vehicle. With the original transmission I hopped in the vehicle one morning and it would not take drive but the reverse is working fine. Also where can I purchase the overhaul kit if this is the best option? Thanks a lot any advice or assistance would be very appreciated
What the problem with the original? common issue with these is no 3rd,5th or reverse
@@GaryFerraro The original transmission was not taking any of the drive gears, when it’s in drive it does absolutely nothing. But the reverse gear works fine
Mr Ferraro fantastic video Sir. I have a 2010 fwd Cadillac SRX with 130k. with what I believe is a 6T70. we bought it used and I changed the old trans oil immediately with Valvoline MaxLife high mileage dex 6.The old oil that came out smelled fine and not burned and was still redish. It tends to shift hard from first to second a little hard under light throttle load but with more throttle it shifts fine. is this normal or do I need to look a the valve body? I don't see any codes when I use my obd2 scan tool. also is the oil I used good or is there a preferred brand and type you prefer. I believe in changing trans oil annually or biannually and we don't do alot of aggressive driving and are easy on or cars. besides the hard 1 to 2 shift the trans works great any advice or recommendations would be greatly appreciated. I do all my own work from restorations to engine rebuilds but I have next to no experience on automatic transmissions I have rebuilt plenty of t56 and other manual transmissions.
Again thank you for the great detailed content and sharing your vast knowledge
Dave
Does this happen when the car is cold and hot?
I would say when its hot yes. I live is south texas and 100+ average temp is common
I found this GM diagnosis report do you think this is relevant?
gm.oemdtc.com/6800/6t706t75-transmission-assembly-with-harsh-1-2-shift-with-no-dtcs-2015-2016-buick-chevrolet-gmc
What i would do first which is also the easiest is to confirm no codes in engine or trans, then i would reset shift adapts, you will need a scan tool for this, also car has to be a certain temp for the procedure to work, cant be to cold or too hot
Should I take it to the dealer for this?
Does the ouput speed sensor for GMC Terrain 2011 AWD 2.4L is also in the inside? Or is gonna be in the outside?
Yes, should be the 6T45, have to pull off the TCM to change it
I have a question with techm I have 2010 Buick enclave it slipping a little from 3 to 4 will not slip all the time someone said it probably the techm wanted to replace it for $1100 could you just replace the switches on it has no codes in transmission only other thing it's done one time is stuck in 2 gear till I put in park then it shifted fine it been parked for 6 months and drove it the other day shifted great has 142000miles what do you think I should do
Check your fluid level and condition. At that milage you’re looking at more than just the control solenoid assembly.
Very good!
Thank you, Greetings from new york
Hello Gary I have a 2007 acadia 2wd currently I'm getting a code p0700 other is p0752 shift solenoid stuck on what do you think could be different causes of this code if not solenoid what else should I be looking for.
It drives fine when I erase codes so makes me think it's not mechanical. Once I step on gas WOT it won't go past a certain speed and codes pop up that I listed above accompanied by p0989. Once I erase codes it works fine again any thoughts
You have pressure switches on the TCM, those switches are no good, you either have to replace the laminate disc and seal for the pressure switches or get a new TCM. Tcm is located inside the transmission
@@GaryFerraro Thanks alot for the quick reply Gary I really appreciate it I definitely will be taking out the tcm and checking those pressure switches. If they are fine could it actually be the solenoid itself ?
@@MustangFourSix With those codes no, you will fine those switches no good, you will see the disc out of place. If you wanted to fix it, the Laminate disc and seal will have to be replaced, aftermarket company called Sonnax has the kit with the tools to fix it
Curious as to your thoughts on the Gen 2 6T70 transmissions. I'm highly considering an 2018 Chevy Impala which has this transmission coupled with the 2.5 ECOTEC LCV. I know high trans fluid temps are responsible for a lot of the issues, so do you recommend a trans fluid cooler if I were to go ahead with a purchase? Thanks!
I never liked adding on coolers, i have always gone with how it comes from the factory and never had an issue. Gen 2 are good, fixed issues from Gen 1
@@GaryFerraro I appreciate your insight!
WHAT CAUSES NO PRESSURE AFTER REBUILD NO FOWARD ONLY WITH HALF THROTTLE
What was original problem? Any codes present?
Gary, is this a good transmission? Just got an Impala with this. My old Malibu with the 6t40 went out at 140k.
It has it's common problems, this trans is similar to the 6T40, it's like it's big brother
Gary, you won’t believe it. I have only 50k miles on my 18 Impala with the V6. They’re taking it in because of a torque converter shudder. Should I trade this car in? I’m confused because I see some for sale with 150k-200k miles for sale. What am I doing wrong? Hard accelerations? I hope they replace the whole transmission and not just the converter.
Where can I find the steels and frictions for a 2008 Malibu 3.6 with the 6t70 I plan on replacing them but want to know if you’d recommend a good quality set of steels and clutch’s
Do you have it all apart, is this all you need? Whats the problem with the trans
@@GaryFerraro it shift smooth going threw all 6 gears but when I press the gas the transmission is jerking to change gears but I have to press a little harder on the gas and I’ll shift , But when I put it in manual mode I can down shift and up shift just fine . is this a wave plate or pressure switches , valve body
I have a 2009 v6 3.6 saturn vue. Will I have to pull the engine to get the transmission out? Thanks
Should not have to, did a few here
Gary quick question? Do I have to reprogram the TCM after transmission rebuilt? Because I'm just done with my transmission and it's acting funny 😥😥. What is possible wrong?
If you did not change the TCM then no, if you installed a new tcm then yes. If the tcm is the same, try resetting shift adapts. What is it doing? any codes?
@@GaryFerraro thank you, but it wasn't anything with the transmission. My engine was the problem I'm sorry for not answering quick, but now it's fixed. Thank you for your helpful videos and also your help. God bless you.
Great job, gary do you have any idea what is the transmission of my car AWD captiva petrol 2011 i bought here in the Philippines
Tnx jun
I do not, do you know how many forward speeds you have? is there a bottom pan? what is the engine size?
@@GaryFerrarotnx for the reply, no oil pan 2.4L 6 speed automatic
I'm having trouble with my lacrosse twice now giving me the transmission. Overheating, idle engine warning. It has 169,000 in it but has been serviced two different times since I've had it. One of the ailments I found was the fluid temperature sensor. Trying to figure out exactly where that's at. If by chance you get my question is there any advice you could offer me. Thanks so much
What codes are you getting? you had the car scanned for codes?
@@GaryFerraro yes, I work at an advanced auto parts my dad is helping me who knows alot about rear wheel drive tranny's but limited knowledge on front wheel. Back to the codes. It actually showed no tranny codes whatsoever when I checked them this morning. I recently replaced the catalytic converters and 02 sensors and I had codes from those that I cleared. Only other code I had was a knock sensor code and a crankshaft sensor code. Replacing the crankshaft sensor while having it torn down. Read a reddit post where another guy was having the exact same issue with his car and it was finally diagnosed with a faulty TCM. Your thoughts?
@@GaryFerraro also have replaced the radiator so slim chance of the cooler not working properly and less that 10,000 ago the CV axles were replaced and new fluid added also. Just thought of these things
@@peeholio3260 Could be a TCM sure, Have you monitored the Temp sensor? I also want to make sure there are no Torque converter slip codes because that can make a temp code appear as well. As the converter slips, it generates heat. Im off to sleep but will check you in the morning for any reply you may have left me.
@@GaryFerraro no slip codes. Car runs perfectly around town and so forth. Get out on the interstate around 70/75 and it has thrown the warning now twice. It will down shift hard. Other than that she runs perfectly. Shifts out and downshifts like normal. Thank you and that's fine on tomorrow. I appreciate any help. It's really a walldinger, scratch your head ordeal.
Gary do you know what transmission I have in my 16 Sorento v6 awd
If you have a 3.3, it should be a A6FL1, probably a 6 speed
Gary Ferraro thank you do you see many problems with these transmissions
Not yet Im going to a seminar in a few weeks, i wonder if your trans will come up
I have 2007 Saturn seems 35r clutch wave plate needs to be replaced can it be done on the car
It probably could be, the drum is right behind the rear cover, but you may have to disconnect the input speed sensor to remove the cover, i actually never did the repair with the trans still in the car, there may be pieces make sure all is clean
Really good video. You have no idea how many you have helped. 6t75 i have 1/4 gap reinstalling side cover. Any ideas why? Ive checked 3 times it just won't close correctly
the gasket is lined up, there are holes in the case it goes into, did you try to push on, sometimes it;s hard to go back in
@@GaryFerraro Thank you for response. Gasket is lined up. Would the transmission being in park have anything to do with it. I just replaced frictions and wave plates by dropping frame.
I have checked in ATSG manual 3x. I just can't figure out why side cover won't close correctly.
@@joncrawford5741 as a test remove the seal from where the wires plug into the tcm see if that changes anything
Thanks Gary will try that waiting on new cover. 1st cracked lol
How to remove the swingarm off a Harley Davidson v tiwn
So is there no torque converter on these? I am having a shudder every now and again at highway speeds... like 110 to 120km/h
Yes, there is a torque converter, if your getting a shudder, first thing i would try is a service get new fluid in there
Gary Ferraro ok thanks. Yes changed it 3 times to flush it. I did it maybe 5000kms ago. Where's the t.c.? I must have missed it. Thanks for the reply. It's a 2011 Acadia
@@kyleatkins928 Converter is located inbetween the trans and the engine, trans has to come out to change it.
Gary Ferraro ahhh right. Was confused with this being FWD. Are the 2011 transmissions common for having the wave plate failures as well? Thanks for the replies! !
@@kyleatkins928 Yes, they are, even if it comes in for something else, always update that plate
Great video! Can you tell me if the input speed sensor can be replaced without pulling the back cover? I have codes p0700, p0756 and p0717. Points towards input speed sensor and shift solenoid 2-3. Can these repairs be done in car? '09 Chevy Equinox sport. 3.6/V6 AWD
Would have to take the side cover down, you could probably snake through. What year is your car?
@@GaryFerraro 2009 chevy Equinox sport. With the 3.6/by AWD
@@MrRivera88 ok, this is an early model, 3 things can cause this code to show, 1-a bad input speed sensor
2- a bad TCM 3-a broken 3-5/rev wave steel. I would clear all codes out and see what comes back. When you drive the car do you feel anything?
@@GaryFerraro It started with a hard shift in the morning. Later that day wouldn't shift from first. Fluid was down but didn't smell burnt and color was pretty good. Topped off,cleared codes and re drove. All codes came back and now had a bucking when moving in reverse. The last symptom was new.
@@MrRivera88 Do you have a scan tool that shows live data?
That filter looks impossible to get to. Is it okay for it not to be changed?
It can't be changed , have to pull the trans apart to change it
Gary Ferraro thanks!
good
Thank you
Does somebody know the order of the solenoids?
hi sir.
I am wanting to learn more on rebuilding transmissions.
I am taking a class on transmission rebuilding fundamentals. I have a couple of transmissions to rebuild and tare down and put back together.
I have 2 questions right now.
1. where can I get parts to rebuild them every place I have tried to find is retail price.
2. looking to get tools for doing the work to. I know snap on has some and can I get a list of tools I might need to start please.
thank you
Where are you located?
I am from Canada I live in Winnipeg Manitoba
My supplier can not ship to canada, have you tried king-o-matic for prices?
no but I will look into them thanks. what are some of the basic tools needed I would like to make a cart for doing this type of jobs. thank you again
I would say, metric socket set, speed handle, metric wrench set, screw driver set, pliers, to take the transmissions apart you also may need air tool, 1/2" impact wrench, 3/8 impact wrench, thats a good start
Gary, great video. I have a 2007 pontiac g6 GTP 3.6L. I had no reverse and only 1st and 2nd gear. I changed the transmission with one from an 2008 monte carlo. Everything shifts fine and no codes at all. The issue is my speedometer won't read over 25 mph when I am doing 60-65. The cruise won't work till it reads 25 mph then works. I was told that the g6 and monte carlo have different part numbers for the VSS. I still have my old trans and would I need to swap out the TCM/Valve body and speed sensor? would that remedy the problem you think? I have the 6t70 trans. I was told to replace the cluster and I did and same issue. scan tool says no communication with the cluster also. Any ideas would be appreciated. I took it to a transmission shop who put their tool on it. shift signals were fine and speedometer read 17mph and scanner read 42 mph.
when you bought this trans, did you go by the vin number
@@GaryFerraro No I didn't I bought it off ebay and they have the chart thing where you put in your car info and it tells you if it's compatible or not. I can't go back into ebay and get the actual info cause it was a few months ago. I just did a scan and showing 0 DTR codes and 0 TCM codes. I am at a loss. I was also just checking on ebay and the 6t70 gen 1 trans won't work so it must be the gen 2. The speedometer did work correctly before I replaced the trans.
@@lexigoodman9406 would like for you to scan ABS, most of the time this is where the signal comes from, let me know if any codes
@@GaryFerraro Yes there was 1 ABS code C0 196-00 YAW rate signal
@@lexigoodman9406 That wouldn't cause slow speedo. Next question, do you have a scan tool that shows live data?
Where is your transmission workshop located?
I'm in New York on Long Island
Hey man thanks for video i have same transmission for my malibu 2013 2.0 and car losses power randomly and lately started to have weird noise when accelerating at low rpm what could be the problem?
Can you have it scanned to see if any codes are present. When you say loses power does it take off heavy from a stop?
@@GaryFerraro yes it is feels very heavy at stops and in high traffic which i cannot exceed 30-50 km speed the car shifts very weird and also has no power when i press the accelerator for 3 years it didnt throw codes but recently it did but i have no idea which codes the service garadge didnt show me unfortunately
When i say high traffic meaning when i stay at stady low speeds car feels horrible but when the road is clear and i can go to higher speed like 80-100km it feels a bit better and stronger
@@iragubenko4815 Did you recently have it scanned? can you find out what the code was, that may give some direction
@@GaryFerraro i will check codes but what do u think it may be problem with transsmision control unit or internal problem?
I get code p0752 on my acadia only when I start it cold and if will be stuck on 2nd, but when I erase the code, it will get back to normal, do you think is an electrical issue, thanks!!
What year is your car
Gary Ferraro 2008, thank you!!!
@@mightydavid100 This code is a mechanical code, usually means internal problem. Do you feel anything while driving. Common on this trans to loose reverse, 3rd and 5th gears.
Gary Ferraro no, it drives fine! Shifts smooth, this code only comes up when the vehicle is been sitting there for a day
@@mightydavid100 ok, si it starts up and it's in failsafe, you clear the code, is the car running when you clear the code? after it is cleared ok for the day correct.
I have this trans in my Impala. Iam doing fluid changes every 15,000 miles in an effort to prolong it's life. A real bummer they put the filter inside the trans. Might as well wait for a failure before tearing into it to change the filter in a rebuild. Bad design.
James Last Good job on changing the fluid. Common problem with these units is the 3 /5 reverse wave steel goes bad. Are you using dexron 6 fluid?
Yes Iam using Valvoline Dexron 6 fluid. I haven't had any problems so far. 106,000 miles. Knock on wood!
James Last ok good deal. What year is your car
It's a 2012. Thanks Gary.
Welcome
Thanks
thanks for watching
Awesome video thank you! Do you have to remove the round cover to replace the input shaft speed sensor or can you do it with just removing the square shaped cover?
You should be able to do it just removing the square shaped cover. It is a little tricky but can be done
@@GaryFerraro ok thanks Gary, I'm trying. I got the cover removed so but now I cant get brown electronic device loosen I guess I'm missing a bolt somewhere?
@@rickygray7767 If you mean the TCM, Why loosen that, wire behind it?
@@GaryFerraro isnt the sensor behind that?
@@rickygray7767 The output speed sensor is, the input speed sensor is in the cover but hooks up to the tcm
Is this transmission good? I am thinking to buy a second hand Chevy Malibu with same trany.
They have common problems which would require an overhaul, What year are you looking at
@@GaryFerraro Chevy Malibu 2011 2.4L 6 speed automatic. No reverse. I don't know it's just a solenoid issue or gears problem. If only solenoid, I maybe fix it. But I am not sure on overhaul. Are the replacement parts (snap rings, O rings or clutches) easy to get for a non-mechenic? Like from RockAuto? Thank you for your time!
@@TheLazydavid No reverse, no 3rd and no 5th is the common issue, with a 2011 you have generation 1 trans. Not sure if the parts are on rock auto but where are you located, sometimes I hook people up with my personal parts rep and the parts are shipped to them
@@GaryFerraro Canada 😥 Parts are hard to find and expensive. If I decide to buy that car, I maybe need your help for the parts. Thank you so much!
@@TheLazydavid I don't think he can ship there. They do have a company in Canada called King-o-matic. Maybe check them out
great videos Gary I have a few of these common up great review ...you are so thorough ...lol spelling
Thanks for watching, your a rebuilder?
Gary Ferraro yes mostly have done 4l60e and the like it’s a new one for me
@@srvjediknightsrv750 Not that bad to do, common problem no reverse, 3rd or 5th. Make sure you update the wave steel for reverse, 3rd and 5th. if neede I may be able to send you some info.
@@GaryFerraro thanx that would be great !!
@@srvjediknightsrv750 My e-mail is
gsferraro@yahoo.com
drop me a line so I have your e-mail
Do you know what trasmition I have on acadia 2009 fwd?
should be the 6T70
@@GaryFerraro thank you man you the best
@@GaryFerraro what the difference between 6t70 or 6t75?
@@FORD150-5.4 Not much, really the same trans, maybe the 6T75 may take extra clutch plates in some of the drums, but basically same trans
@@GaryFerraro soo I can put 6t75 on my Acadia 2009 fwd? And also my has trailer package that any different?
Hi I was wondering if you can help me I put a new kit in techm oh my 2008 Buick Enclave everything looks good but I put it back on and I cannot shift gears what it seems to be the problem if you can help me I took it back off and I can change the gears but I put it back on and he does the same I cannot shift gear I don't know does it neat program Again it is the original the came with the car I just put it kit on it please let me know thank you
Ok, just to confirm, you put a new Tehcm or you rebuilt yours?
Gary Ferraro thank you for your reply I rebuild my and I put it back on and I cannot shift the gear is stuck in park I took it off again and i am able to shift again then I put it back on again and i cannot shift
Ok, disconnect the cable at the transmission and see if the linkage moves within the trans, leave the valvebody in the car see if the linkage moves with the cable disconnected
I already disconnected the cable and i tried to shift it with my hand but when I take the TechM off I'm able to shift it with my hand and also I put the cable back on and I'm able to turn the key onto on and I'm able to shift the gears but when I out the TechM back on I can not shift at all it seems like it is stuck in park.
Your hooking up the manual valve? are you removing the detent each time(clicker) that selects the different ranges?
I cannot find much on these transmissions. I have a 2014 impala limited with 60,000mi on it. I recently took it outta town, and it kept giving me a transmission hot idle engine message on the dash. Its full of fluid no codes. So i really have no clue what it could be. Bad tcm, bad sensor, maybe the cooling lines, are bad or clogged, thermostat, clogged transmission filter idk. I like my car, The Lfx v6 is fantastic to me but the the transmission is just not good. The morons who programmed it should be shot on the spot!
Are you scanning the transmission? The TCM is located inside the unit. If you scan the engine, you may not get transmission codes.
Gary Ferraro No haven't got the tcm scanned yet, will in a couple days maybe that will show something.
It may, let me know once you scan it
R. Flash hey did you ever get this resolved?
The fluid is black
NEVER BUY DORMAN!!!!!!
Where is the filter
Internal, in the bellhousing by the pump
Garbage transmission. It's astounding that they spent 700 million dollars to design and produce this.
Is this the transmission on a equinox 2011 awd small 2.4 l engine ?
That trans is the 6F35