How to fix No Reverse in GM 4L80-E GM Automatic Transmission Loss of R for FREE
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- เผยแพร่เมื่อ 6 ต.ค. 2024
- 2001 GMC 2500HD 4L80-E Reverse servo extension for a quick fix to get back on the road without pulling the transmission out and down. This is not a permanent fix, but should get me through the season. NOT A PROFESSIONAL ... might not be the proper and professional way to repair... but at -30 deg .... It will get you home!
Thanks to:
Broncocarl92 for his superior tool fabrication and explanation video
• GM 4L80E reverse servo...
Automatic Transmission for the teardown and in-depth look at the internals of a 4L80
• 4L80E Transmission Tea...
WIT Transmission Parts, Inc. for their parts available, parts breakdown and parts diagrams.
www.wittrans.c... - ยานยนต์และพาหนะ
![[ TEASER ] เงาะป่า - วงL.กฮ. | TMG RECORD](http://i.ytimg.com/vi/M4ObdFfcPww/mqdefault.jpg)
Just finished this operation yesterday. You do not have to drop the valve body. You can remove one solenoid with a number 20 Torx head bit. If your patient you can worm it out and worm it back in. Welded on my rod turned it into 4.980 in. Reverse is Rock Solid. Do not drop the valve body no need to
How did you know what length to make it
@@tysonrobinson9575 the factory maximum length for for the reverse Rod is 4.980. Since my Reverse band was Worn i made mine the maximum length. Worked out good
if it's too long you will feel it pulling reverse when on
flat ground, then you will have to repeat the entire process. Don't overthink it it's not rocket science. You can however buy a factory for .980 Rod
I spent more time thinking about it than it took to do it
@@clintwolfe8096how long did it be took u to fix it g
What rod do I weld
How has this worked long term? Still using the same transmission?
Bad ass what you can do when you understand how and why things work the way they do. Good video man. Thanks for sharing the knowledge.
Thanks for the shout out! Sometimes all you hear is the haters that tell you to do it the correct way... even when you lack the time, money, resources etc lol
Thanks to this video i fixed my no reverse issue, thank you sir
I just lost my reverse today. Glad I found this video, This is so much better than pulling a transmission. My truck has over 300,000 kms on it. This would be a good patch to last the old truck until it dies. Great video.
Excuse me did you ever fixed your truck with this patch!?
@@ricardogutierrez1840 No, Turned out to be water from driving in the mud. Did a flush and it started working again. It's working great now and has been going strong for a few months now. I have also had the exact same scenario happen when it was a bit low on fluid!
@@bradlys4978 ok thanks for the info
I am also someone who can make things happen.. I enjoy seeing other people make things happen or create things from other things.. something out of nothing.. all sorts of respect for this video.. love it..
Thanks bud! We are the people that people make fun of for fixing things... UNTIL they are in a pickle and need someone to get them home... LOL
Came across this video today as my reverse all at once got weak with all forward gears functional. Wasn't convinced this was my issue until you said no decel in low gear. I've been fighting that issue for a long time not able to figure it out. I'm going to give this a try! Thanks for sharing.
did it work?
@@HeyFlames yes it did! I've put about 10k miles on it since
What I did was weld more material on to the end of the pin then grind it down to match the original shape.
The reverse servo push rods are select fit when they build the transmissions (i.e. they are different lengths to give proper band clearances when the trans is NEW). There are aftermarket adjustable push rods available to adjust the band for wear..... like used to be standard.
Very good non transmission person video, good emergency fix I would have done the same but without looking at the band
Buddy, you saved me big time. I have been working transmission for some time. The old THydro. I would have never thought I could get by without removal. Thanks for posting. Greg.
That is great man!!! Seriously, this is why i made this video. Sometimes you just gotta get it by for now... kind of get you home type of deal. Glad it helped.
@@WHATTHEFIX bjj7
glad i found this video my reverse works finally after waiting so long thank you!!
Great vid man sure helps everyone thank s for taking the time to help other people out we need more people like you thanks
Thank you for watching! Not always he best cinematography
@@WHATTHEFIXhow long did it be took u to fix it g
Thank you very much well explained🤙🏾🤙🏾🤙🏾🤙🏾
Also want to comment, that on my 1999 2500 4x4 4L80E I had to drop valve body to get to 1 bolt. I have every tool in the box. Still had to drop valve body.
You’re a gawd damn genius
LOL! Mama always say I were the smert one!
Anyone watching this, YOU DONT NEED TO DROP THE VALVE BODY !!. If you have lost reverse completely, you need roughly .200 welded on top. It does not need to be perfect.
That is exactly what i said in the video. And it is 0.20" (twenty thousandths... not two hundred thousandths). Im just a guy that has no training in transmissions trying to help some other fool in a pinch get to tomorrow. Thanks for watching!
.200 is the same I think. Most measure 4.780 and you need 4.980 +/-. .200 = .20.. 20 thousandths is .020
south texas like hell you don’t
You don't, plain and simple
.0200 is a matchbook thickness. You most likely needed to add .200, two hundred thousandths. That would be almost standard for a plow truck band. Good helpful video
My R just went out; had it rebuilt 5k ago when I had lost R, OD = Direct gone.
Sure hope I’m still warranteed …. Could overfilled fluid be a cause?
Works for me
Thank you!
So you didn't have any indication of failure prior to it losing reverse? It just went out while plowing?
Hi there! I've got the problem with R - when engine/transmission is hot (normal temperature) sometimes R starts to slip. It's only when it's normal hot. What could be the problem? D (1-2-3-4) works good. Oil level is ok. No trash in pan detected. Thank you!
Sounds like your R band is wearing thin. Short term fix is this. Long term is to drop the trans and replace. Along with boost valve. (likely just rebuild if that far)
WHAT THE FIX thanx bro! Suppose to dismount the trans and see whats inside
Was it grinding or just no reverse?
Same shit with mine Except I'm lazy and don't know wtf so I'm watching your video right now luckily don't pull a plow
It is a temp fix... will get you by for a while until the band gives up and snaps
@@WHATTHEFIX Makes good sense thanks. I don't dare work on the same problem your helping us with on your video. if I give a pro directions how to fix my trany ? they probably tell me to go fix my self.🤔😅 If I try it I'll have your Video on screen right under the truck next to my eye balls.
I needed to change the transmission pan gasket on my93 chevy c1500 and after doin that i dont know what happen that now only the reverse works but not the drive gear. Any idea what might be the issue. Thanks.
am having issues with a Lexus 330 13pin it doesn't move backward it only moves forward have change the body valve from 10 to 13 pin yet it does not given me wat I want pls I need your advice pls
Is it just me or Anyone noticed at 2:11 point in the video on the camera monitor the little creepy legs crawl by😂. Nice video bro valuable knowledge.
I didnt notice. Most likely shop cat lol
My 1997 v6 automatic chevy silverado , my truck drives but does not reverse . It in gauges into reverse but when I press the gass is does not reverse. Also I put a new fuse for my dash cause it blows out when I put it from Park to Reverse . But if I put it from Park to Drive with out stoping on reverse it does not blow out . Any Ideas ???
1995 GMC 1500, put it on reverse heard a pop sound no reverse but has drive. I have to make the gears change by pressing gas peddle then led off and it will change gears will not change by itself
Dunno... wish I had better answer
Rear band giving up was the pop maybe. Should be able to see it with the valve body dropped.
@@tmfo125 May be the shake shimmy of the truck causes something to move back in to the correct position unill it comes back out again. just a thought. lol
I mean go's back out again. no sleep less brains. lol
So did your reverse have any movement before u looked into this? I have a bit of reverse but hardly anything
I have a 2002 3500 4x4 4180e has a delay when putting it in reverse it never slips once in sometimes it's right there other times it's like neutral then I put it back in park then back in reverse and it is there????any help with a quick fix lol thanks
Oil level too high?
Nuetral safety switch or linkage needs adj
Did you have a whine at all ? And did you ever figure out your issue and fix ?
@@guitarguy4334 really ya think?
Transmission still working?
When i lost my reverse today, i seem to have also lost my third gear and over drive. Any guesses?
I am not trans builder. If I had to guess, I would say there is a problem with your bands. Sorry you got troubles. Good luck!
@@WHATTHEFIX thanks mister!
@@garythesquidsquid7779 direct clutch bad
@@WHATTHEFIX Wrong answer, you have no clue what you are doing.
Do you know if this fix is the same for a 4L60E
Did the truck move once you put new fluid in? And did it smell burnt when you drained it??
Yes, and no the fluid was fine. I imagine the majority of the band's deterioration was from years of use before the latest fluid change. I was stuck in snow and most likely was over aggressive and caused it to fail suddenly.
2:13 there's your problem. You gotta dog in your transmission.
Helo sir how are you my car gm selverado 2005 revers not working ferwad ok but revers not work i help you can tell me what peroblem thanks you
Reverse fails in gmc astro 2000.i have to problems in the mornings put it on reverse. is the same process to fix my van ?
Astro has a different design transmission.
I am not welder. Would adding shim stock work as well?
I'd just used jb weld let it sit at room temperature over night and file until appropriate size
@@mmike422 it would eat that up in no time. unless its very thick it would probably do something bad to the area its involved in. trany fluid would probably turn jbweld in to butter.
You don’t need to drop the valve body to change the rear band servo.
As I said in the video, someone with more talent and experience than I could perform this with out dropping the VB. Thanks for checking out the vid!
travis schneider like hell you don’t
My 4L80E is 2004. I did not drop the valve body either and I was able to fully service my reverse servo, while laying on my back.
My mk4 automatic TRANSMISSION not reverse
My 2013 Ford transit connect xl drive forward in reverse wtf...😢 any suggestions 🤔
Too new for my old brain LOL So much electronics
@@WHATTHEFIX Mine did the same thing? later I found the shift handle was unscrewed from the drive colum upper part of steering whell. 😅😅😅😂 used a pipe wrench to screw it back tight.
Steering wheel
Isnt there a band adjustment on the side of the transmission
maybe in 1950 LOL
@@WHATTHEFIX and a grass cutter in the back with cows.
@@WHATTHEFIX I like your profile what the fix. lol
My reverse feels like it locks then I give it a lot of grass then it releases
Same
Any fix ? I'm losing reverse then it comes back pretty weak but if I drive forward, i get reverse back for a little bit bit then nothing... until I pull forward a ways...
Plus I think I'm getting a whine too..
Ideas ?
Could this happen with the automatic GM 6L80?
I assume so. But I know nothing of the banding inside those
So everyone is going to ignore what just pass by on the screen between 4:32-4:40 of the video...😒 how’s that possible with it at that angle 😩
Im not picking up what you are saying...
This "simulating a longer rod" businnes, can get outta hand pretty quickly ya know.
It Can reversed cannot go forward
Woukd this possibly work for a 4l60 e
Yes. The 60 is of the same design as far a I know.
Cool awesome im gonna try to do it to the 60 and see wat happens
Where is the rest of the video?
In subsequent video on my channel.
Ur not helping my son with whut ur saying just change it from truck Tha Philip over .
Ran oright for a week then it wouldn't go in reverse.
What about 4runner 1995
No Idea. Never worked on one
What if I get a new pin? I've see them for around $10.
Absolutely! I just live in a rural area, and it would take me at least a day to get a pin in my hands. At that point, I did not have the time. Keep on truckin'
Cool .... I asked at the dealership and there's 4 different sizes tho.... Trying to figure out which one to get before i take it apart.... It's also going to take a day or so for me to get it also.
@@thomascantu3545 Did a new pin fix your issue and did you have a whine at all ? I have reverse coming and going and then none then if i go forward a bit, i get reverse back for a little bit..
3/16" is .18750
Ya... some things that come out of my mouth are not what are in my head lol
Any update vid?
It lasted a couple weeks.... Until I got stuck and had to severely work the trans. I hit R too early in the attempt at rocking out of a snowdrift and she snapped. I feel the band would have lasted the season. If it was just a regular daily driver type truck I bet it would last indefinitely or until something else in the trans failed.
@@JRA79 You might be interested to know that the 4T65E has a forward band breaking problem and the sonnax fix is a longer push rod S84908H for that apply servo. As they age, the timing for various shifts becomes delayed by missing clutch and band material. The 4T65E measures this time and boosts pressure when the time is too long. And this results in maximum pressure just as the too short stock rod hits the band and band breakage is a common issue with those. In that case it's the forward band and when it's done broke itself like this, you are walking. So a further problem is the regulation of the pressure rise during this timed pressure rise and that particular valve (AFL) in that transmission wears out about the time the band does as well and this further aggravates the issue. That fix is kit K098 from superior. I would suggest every pressure kit sonnax has for yours to steer that problem away from the table. P1881 is a common code for my transmission and the sonnax rod appears to be 2/10 longer than stock and that is 200 thousandths - 0.200. Twenty won't even compensate for what has worn out, you need to shorten the timing drastically as they all do this timing thing. A better rig to build would be one that bolts on and measures how much it moves before you take it apart and then shorten that measurement by 0.010 so that the band isn't applied when not called for. I got my dial micrometer for 20$ from harbor freight and it would work fine for this. They will ship right to your door, I live the rural life.
www.transmissionrepaircostguide.com/p1811/
I’m loss of R and 2 Fix Transmission in taho 4L60e wat you’re prablem??
Was the R band for me. Trans is out now for total rebuild
.1875
My car hd2500
Dude, you lost pressure and wore out the reverse band. Plowing heats up reverse bad more than any job. Forget what your doing and replace the reverse band. Why did you remove the valve body? Band pieces were most likely in the pan. Dark oil? burnt smell to oil? Rebuild and replace the reverse band.
As I stated before. I’m one step from swinging in the trees... transmissions be tough. Also, was in a huge pinch. When I was done snow plowing for the year I rebuilt the entire transmission
well that definitely wasnt a free fix. you have a video proof of you putting it back together and driving it?
Next vid on my channel. Im not sure where I spent money. Electricity?