This is what a truly skilled mechanic looks like. Great video.

Sharing all his knowledge where other guys keeps them as trade secrets. There are lots of knowledgeable guys out there, but one thing very nice of you is you share unconditionally, very generous, the world needs people like you 👍👍👍👍👍

I think some people have shaky hands or need glasses and accidently clicked the wrong button. I doubt there are that many people so jealous of such informative and intelligent instructional videos. I've been working on car off and on since the late 60's and I'm here to tell you Hiram is a rare breed to share his vast experience that others covet and treat as a secret. I admire his openness to offer his knowledge that took him a couple of decades to acquire. It no doubt took a lot of sweat and busted knuckles along the way too, so give the man his due. I have learned more from just watching his videos than from taking class after class learning about transmissions. I only started dabbling in the Automatic Trans rebuild about 10 or 11yrs ago and still don't consider myself proficient. Hiram is probably the best I've seen going into such detail and explaining the different aspects of what to watch for and why. For anyone to click the thumbs down button it has to be accidental. Keep up the outstanding videos Hiram.

Hiram, I am a licensed aircraft mechanic and worked for a major airline and I can honestly say I have never worked on anything that complicated. You are a highly skilled mechanic. Thank you for posting this, god bless you, and I wish you the best

thank you so much for what you do they were charging me 1700 to do my transmission and i look at ur videos i bought the rebuilt kit for 249 bucks i just went for it and actual did it thank you so much and god bless you bro..thank you

Hiram, You rock! I'm extremely impressed with your speed and knowledge. Great demonstration of skill brother!!

Great teacher. Its guys like this that made me better a mechanics. Salute

Nice work and thank you for sharing. Videos like this are a huge help in demystifying the auto trans. I'm currently contemplating a 1976 Pontiac Turbo 400 that has 35,000 original miles on it and has never been opened. It sat for a long time and slips when it's cold. Gonna build it for a 500+ HP engine.

I want to say thank you! Watching the 4L60E video allowed me to rebuild my trans myself. Thank you for sharing your knowledge!

This is an AWESOME video and if you follow it closely, you WILL have a good 4L80. I added a couple mods that I needed for my 4x4 and have a KILLER STUMP PULLER.....Runs the highway at speed without a sound. GREAT TUTORIAL!

Thank you so much. I have rebuilt many manual transmissions, but never have done an auto. Y just gave me all the confidence I need!ou

Goes to show you that once you spend the money and time to get the transmission out and opened up, its best to do a complete rebuild as its financially the best solution. Install all wear parts and a Transgo mild shift kit to make changes to the OEM flaws.

Call me weird, but I watch his videos for entertainment. He never ceases to impress me!

I can not thank you enough sir!!! You are a scholar and a gentleman.

I cant get my complete geartrain @ 22:00 out. Comes 3/4 the way then stops. I have been fighting it like a dog???? :( Thank you Mr.Gutierrez for sharing your knowledge for free.

Thanks for taking the time to explain and demonstrate how to take it apart. Great Video.

Your Excellent transmission Videos have caused me to gain confidence and come out of retirement and tackle a few new transmissions like the 4L60E and the 4R75W. I would really love to see a video on the re-assembly of a 4L80E. what I have learned is this one takes many more special tools than does the 4L60E and I know you are excellent at rebuilding with as few special tools as possible. I hope you can post a new Video on the 4L80E soon. thanks again from a big fan in San Antonio TX.!!

That hose is about to bust near the Quick Connect fitting wish I was there to see that . None-the-less good video

Wow, amazing to watch a master at work, no wasted movement on your part.

The man works like a pro.

all those who clicked on the thumbs down thought it was the download button. I liked because of the lack of a love button. no question, he has clearly demonstrated his level of intelligence and expertise

Buenos dias profesor un gran saludo desde Venezuela muy buenos sus videos muy educativos y exelente prefesionalismo para enseñar solo deveria hacerlos en español sobre todo los de las transmission mas dificiles 4L60E ,6L80E , 4L80E SE lo agradeseiriamos profe toda los mecanicos de habla espana yo veos todos sus videos

Thanks for these videos. I built my first 4l80 would've taken much longer for me to figure it out without your help.

I'm studying these videos. I've got a '95 Chevy 2500 that I've retired as a work truck because of a bad transmission (which I'm hoping to be able to repair for my home use), and a '98 3500 dually that's probably a few years away from needing a transmission overhaul.

This is a quick, informative video awesome information. Very good for training. I salute you.

Nice to see a cast iron pump like the 350 and 400 and powerglide transmission

Thanks for a helpful video, I'm not transmission guy so I had someone else rebuild my transmission, it's a bit of a long story, but I wound up missing an external piece or two and I wasn't sure what was missing, now I know it's the speed input and output sensors I need to get. And I also now know why the linkage sensor was such a PITA to get off, lol.

hola hiram primero que nada felicitaciones por tus videos e aprendido mucho y sobretodo perdi el miedo viendo tus videos. gracias ati ya empese a recostruir transmisiones en mi taller gracia gracias.

Hey Vato... Very good disassembly technique and efficiency! Professional and positive tambien. Keep representin' and being a role model for these youngsters! Peace

thanks for u videos, my van doesn't go in reverse all forward work fine, im thinking the reverse band is burn. thanks to u videos I feel confident to do the task.

Excellent video brother! I just found a couple of items I missed, which may help me recover from my come-back Wish me luck as I go into it again . .

I’ve been watching a lot of videos on this and yours is my go to. I’m about to attempt this today. But I’m just switching the guts into a good case.

you're the man for putting this up! tyvm sir, well done

great videos, your dissassembly and reassembly videos were a big help in rebuilding my first 4l60e. I now would like to rebuild a 4l80e, your teardown vid is great any tips or tricks on rebuilding and reassembly would be greatly appreciated. Thanks agian

Great video ... too the point and detailed

Can anyone out there who has watched, commented or liked this transmission tear down tell me what is wrong with an instructional video like this on KZfaq? The Customer is charged for a complete tear down and assembly because of a wiring problem! Had the technician stair stepped his diagnostic evaluation correctly, he probably would not be rebuilding transmissions at this stage in his life. NEVER, NEVER NEVER get complacent! Always use your head to think things through.

What would cause the overdrive to disengage and engage periodically once it was at full operating temp? Pressure switches already replaced.

My 1992 Chevy p32 has the 4L80. Thank you.

What was the final diagnosis of why the transmission needed to be rebuilt? Or was it misdiagnosed?

what a video, explained that I feel inspired to do that job too! Thank you so much,....

Awesome vid man. Thanks

This guy is a fucking beast ! Makes it look much easier than it is lol.

thank you for a great teardown video.

Impressive i bet you can do it blindfolded

I have built 4 units with the help of your videos. Easy to understand and you are very thorough on your tear downs. Shoot me an email so I can get your address, I owe you a steak dinner! haha

you make it look so easy

Fantastic video, thank you!!!! You make dealing with a 4L80e look effortless. Lol

Very imformative video by a very skilled tech.Thanks

Dude probably makes 50k a year in cash doing side jobs in his garage.👍🏼

Hiram your man That 4l80 alot more intense than a 4l60e

You had me until you took the valve body out Lol Lol My god there are a lot of parts !! Nice job!!

Very nice to see!

Thanks for the video,I'm about to tear down my 4L80E out of 94 2500 pick up problem started with No overdrive then 2nd gear only with hard acceleration it put it into limp mode .First attempt on overhaul I'm going with Master rebuild kit and thinking about Transgo HD2 shift kit and do you know anything about the Transgo kit where you install a vacuum modulator and do away with the electronic shifting it makes the 4L80E manual shift only ??? Any info is appreciated. Again thanks for putting these videos out for us to learn and have a awesome reference to go to.

i don't know why i watched this. mine is fine right now. changed the fluid last weekend and it shifts smooth as glass now. wasn't shifting funny to begin with. just noticed the fluid was dirtier than i expected. the fan on a hot day makes it sound like the engine is working hard at lower engine speed but it's not reflecting that in the tach. this guy knows his stuff. too bad he's not local, i'd entertain the idea of sending my ranger transmission to him. around here we have powers transmission and they aren't known for quality work. they always are looking for technicians to. the sign will go up for awhile and be taken down for awhile. seems like they have a high turn over and might be hiring the wrong people for the job. they also are known for being quite expensive. leaves me with 2 options for my work beater, v8 swap or rebuild the trans when it finally goes. a v8 with a 5 speed is looking quite appealing at this point.

Estas pesado compa me gustan tu videos. Gracias por darte el tiempo de desglosar cada detalle Felizidades eres buen masetro.

Thank you for the video. It was very helpful.

Thanks for the videos have a question about 4l80e pump gears look okay around the outside as you explain in this video on the flat surface of the gears and on the pump surface looks like a little scoring nothing bad can barely fill it will this be okay or needs to be replaced

Thanks for the great videos! I I lost all gears while driving in the highway 55m/h suddenly. I do have parking locking. Fluid is red no burnt smell. I just checked presure line, unfortunately my gauge is a 1000psi so not the most accurate but I get: P-R-OD-D-2-1 90-70-90-50-50-50-50 at idle. 140-200-130-100-90-90-90 at 1,300rpm Any pointers? If i have pump presure it means input shaft or pump cannot be broken, right? Truck doesn't even try to move in any gear,....broken output shaft? I have replaced trans filter, old was really clogged and had fallen off, but no metal or unusual debris. 2wd driveshaft does not turn, linkeage is good. It feels as it is in neutral all the time; but my presure test seems to indicate manual valve is working, right?

Great video. Very informative.

THANKS very much !

you the best man thank you very much

Awesome info . Thank you!!

Great video. I've got a 2007 4L80E behind a built LQ9 in my jeep. It was pulled with 27,xxx miles on it. Any idea what would cause it shift hard 1-2, and 2-3...and in out of 4th/lock up? It will drive normally on some days and on occasions goes into what some have said is limp mode.

man i want to be 1/4 as good as you are i have a Allison 1000 in my truck but iam scared of messing up

Great video on the process I've watched it 4-5 times at least. What would cause a 4l80e to loose 3rd gear but still have reverse. On a 01 Sierra 5.3

I am also looking for some 4L80e advice.I have a 4l80e from a bone yard .I was told it was running when it came in.I changed the filter and seals, the pan is what I would have called very clean for a trans with 60,000 miles on it. After installing it ,I did not have any forward gears .I have only reverse.Just to let you know ,I have the a LS motor hooked up to this trans with a reprogramed PCM. I did try unplugging the trans because they said I should get forward gear in a limp mode. But no luck.Any help would be appreciated .Thanks great video Fred

it has 365,000 miles on it.same motor and trans

Looking for some 4L80e advise. I have a 2003 Chevy express van, AWD with the 4l80E. There are 170,000 on the van and engine, the trans was swapped out for a junkyard unit at 140,000, unknown amount of miles. While decelerating, from going at any speed, there is a high pitched whine coming from the drivetrain. It's more apparent at higher speeds when you let off the gas. The faster your going, the higher pitched the noise is. I have made sure that all the tires are the same pressure and they all have the same amount of wear. There is no CEL, and other than that the transmission shifts great, no slipping or hard shifts. I'm just afraid it's the pump gears, but wouldn't the gears make noise all the time? I'll see if I can't get a sound bite.

Thanks for the video! Very helpful!

Hello I have a question not sure if you can answer me or not but I have a 1993 c2500 with a 4l80e auto transmission and person I purchased the truck off of said the trans was rebuilt New a and b solenoids not sure what else was replaced but it's stuck in limp mode only have 2nd and reverse a mechanic looked at it and and said the pcm is sending the commands to the trans but the trans isn't acting the commands out so I made a manual control with 3 switches I can hear them click when I activate the switch but nothing coming out of transmission still the same 2nd and reverse any clue as to what it might be thanks if you get back to me

He's some kind of transmission wizzard!

Hola! Hiram me gusta la mecanica eres grandioso cuando desarmas excelente! Mi troca dejó de funcionar la reversa es transmisión 4L80e silverado la desarme pero no se cuál sea la faya! Me podrías desir que hago te lo agradeseria mucho! Gracias" Jesús excelentes tus vídeos

Awesome, very detailed disassembly video. I'm thinking about rebuilding my 2001 Silverado 2500HD 4x4 which has the same transmission, and installing a shift kit. Are there major differences between a 2001 and a 2006 model 4L80E besides the bushing you noted? Also it would be awesome if you had a re-assembly video of this trans. Main difference I would note at this point is that mine will have a transfer case married to it instead of the tail housing.

good job i was hoping you was going to find something really screwed up i have a 1995 480le in a 6.5 diesel with 2nd gear slipping are the diesel and gas trans differrent and why if the are thanks for your help

Hi great videos ! Can you give me a list of specialty tools required for the rebuild I have a 2006 Denali Sierra with the 4L80e that went out and want to rebuild it. But don’t know what specialty tools I need thanks

I have a 1997 Cheverolet C2500 with the 4l80e in it and it whines loud on all gears and in park and reverse. Any input would be greatly appreciated as to what it could be. I've been told its probably the pump maybe transmission filter plugged.

Ran across this video hoping to find something on changing a parking pawl. Park does not work on my 1993 4L80E in P 30 Southwind Motor home. Is it changeable with removing the trans? Thanks!!

I have a 2003 s10 4l60e that will only go to into overdrive lockup one time when you first take off. After that it will not lockup until you shut it off for about two minutes. It will do the same thing, until you shut it off again and only shift one time. Found out I had a bad TPS, raplaced it with and ACDelco, still no lockup. I accidently left the TPS unplugged and it lockups everytime, just doesn't run right with TPS unplugged. I also found out that the MAP sensor was clogged up, and with it unplugged it will lockup everytime. I had the transmission live drive scanned and everything looked good except that TTC solenoid was off, except for the one time that it locks up on initial drive. My question could the TCC On/Off solenoid be bad even though it worked with these two sensors unplugged. Thank you in advance, your VIdeos are awesome

would a bad extension housing bushing cause the drive shaft to travel too far. I have a 99 silverado 2500 reg cab i carry alot of weight (water tank1700lbs when full) and the drive shaft seems to be sliding into the carrier bearing. I took the tank out (drained the water) taking the weight off of the truck and the drive shaft noise disappears. truck has new ujoints and carrier bearing.

hi hiram u a preguntar como le puedo hacer para arreglar mi transmission 4l80e de una chevy van 2003 express arranca en 2 cambio y de hai no pasa la transmission se vajo y se inpecciono y todo esta bien ..no tiene codigos q podria acer en este caso ..te agradesco tu ayuda tengas buen dia

Great vid... You make it seem so easy....lol..

Es de los mejores videos que e visto pero me gustaria que lo hisieras en espanol

I have an 2003 Chevy Impala with the 3.8 engine and when I start my car up it has a whining noise and the then the car will not move when I put it in drive. Also, it goes out when I am driving and stop at a light and go to take off the car just revs and not move at all. Do you what part that went bad or let me know if that can be rebuilt or repaired ?

good one thanks..

helped out a lot.. thanks man... you really know your shit!!

Hi I hope you can help. I bought a control solenoid from Napa part # R784812, for my 1998 Suburban 2500 with a 454 and of course a 4L80E. Well the other day it started acting up and would shift hard when going into 2nd gear, 3rd was fine. I have not been driving it, for concern as I may damage something. I watched a few videos, yours included. Yet I do not know which one I should change, or should I change out two of them? Are the 1-2 shift solenoid and the 2-3 shift solenoid the same part? According to a diagram, the one closest to the drivers side is the 1-2 Please help ass soon as you can, this is my daily driver. also it had a fluid and filter at axp72,000 in 2002 it now has 89,000, I bought it with 87,000 Thank You Sean

Thanks for the awesome video! I have a 96 4l80e in my 2500 suburban. I also have the same yr vehicle but its a 4l60e 1500 as a parts truck. Will the trans solonoids work for the 4l80e? Hope this isn't a dumb question......

One quick question since you do frequent here. I like, and have, a 4l80e to go into my car. I dont like the first gear much but it is a sacrfice I will make. I will need to use 3.73 gears to keep my OD rpms where I want them at 65mph. I want to go 4:10 with the deep, or not so deep, first gear but can not with the .75 OD. Is there a OD gearset I can use to get me a .65 OD? That would/should put me at 2300rpm with a 25" tire

buenas tardes hiram, que posibilidad hay de que me envíes el manual o las especificaciones técnicas de la caja 4L80, te los agradecería ampliamente, gracias

I have 1991 p30 chevy chassis with 454 and 4l80e trans. I have checked to see if there was a code stored there wasn't one. The trans has reverse and only 2nd gear it seemed too gradually get longer to shift from 1st to 2nd but I could be wrong. The fluid was changed about 6000 miles ago and seems to be ok, do you have any ideas what I could check.

Hiram, awesome video! I have a 1994 Chevy K3500 with a 4L80E trans that is stuck in limp mode. Any ideas if this is the wiring harness leaking fluid or the 1-2 2-3 shift solenoids? I did notice the external plug and wiring is dirty and damp with what looks to be trans fluid. I haven't gotten into the trans issue any further yet.I bought the truck after it was sitting for over 2 years so I am seeing all kinds of issues everywhere else and now I am at the trans. Thank you for any info you could throw my way. The truck only has 64,000 miles on it but it was used as a snowplow vehicle before it was parked.

You are a PRO . Great job

Great job!! Love watching your work.

I have a 93 chev 1500 with a 4l80e. it is slow engaging in low and reverse. would it be the low and reverse servo? just looking for a quick fix if any.

Great video, very good job, thank you

@hiram -have you ever saw the check ball seat in the case mushroomed out? What would cause this? Anyway to repair it? Thanks!

Hey boss What causes the high pitch noise in this transmission while driving? It does shift but over 60 start to jerk a little the noise is crazy no grinding also i have to let it warn fo 15 min before try put it in gear..any imput will help Chevy express 2500 v8 2001180xxx I will be watching this videos Thank you

Can you upload a part two " assembling 4L80E"?

cant wait to get my stage 5 80e

07 2500hd po894 I drove the truck and the tc is not locking up. 145,000 miles and my cousin never change the fluid. Do u think tc is bad or solenoid?