How to fix No Reverse in GM 4L80-E GM Automatic Transmission Loss of R for FREE

  Рет қаралды 339,578

WHAT THE FIX

WHAT THE FIX

5 жыл бұрын

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.com/parts?&type=...

Пікірлер: 118
@auditrevor
@auditrevor Жыл бұрын
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.
@WHATTHEFIX
@WHATTHEFIX Жыл бұрын
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
@clintwolfe8096
@clintwolfe8096 2 жыл бұрын
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
@tysonrobinson9575
@tysonrobinson9575 Жыл бұрын
How did you know what length to make it
@clintwolfe8096
@clintwolfe8096 Жыл бұрын
@@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
@wildestcowboy2668
@wildestcowboy2668 Жыл бұрын
​@@clintwolfe8096how long did it be took u to fix it g
@jaredjones6761
@jaredjones6761 Жыл бұрын
What rod do I weld
@mrbojangles9841
@mrbojangles9841 11 ай бұрын
How has this worked long term? Still using the same transmission?
@bradlys4978
@bradlys4978 2 жыл бұрын
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.
@ricardogutierrez1840
@ricardogutierrez1840 Жыл бұрын
Excuse me did you ever fixed your truck with this patch!?
@bradlys4978
@bradlys4978 Жыл бұрын
@@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!
@ricardogutierrez1840
@ricardogutierrez1840 Жыл бұрын
@@bradlys4978 ok thanks for the info
@petek6522
@petek6522 5 ай бұрын
Very good non transmission person video, good emergency fix I would have done the same but without looking at the band
@jorgesierra4714
@jorgesierra4714 2 жыл бұрын
Thanks to this video i fixed my no reverse issue, thank you sir
@jasonsprouse2803
@jasonsprouse2803 2 жыл бұрын
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.
@gregmitchell4619
@gregmitchell4619 3 жыл бұрын
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.
@WHATTHEFIX
@WHATTHEFIX 3 жыл бұрын
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.
@mikewhite3150
@mikewhite3150 3 жыл бұрын
@@WHATTHEFIX bjj7
@ColbyJohnson
@ColbyJohnson 3 жыл бұрын
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.
@HeyFlames
@HeyFlames 2 жыл бұрын
did it work?
@ColbyJohnson
@ColbyJohnson 2 жыл бұрын
@@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.
@DLeeErv
@DLeeErv 5 жыл бұрын
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..
@WHATTHEFIX
@WHATTHEFIX 4 жыл бұрын
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
@XDcloax9
@XDcloax9 4 ай бұрын
glad i found this video my reverse works finally after waiting so long thank you!!
@brianhardrath1328
@brianhardrath1328 Жыл бұрын
Great vid man sure helps everyone thank s for taking the time to help other people out we need more people like you thanks
@WHATTHEFIX
@WHATTHEFIX Жыл бұрын
Thank you for watching! Not always he best cinematography
@wildestcowboy2668
@wildestcowboy2668 Жыл бұрын
​@@WHATTHEFIXhow long did it be took u to fix it g
@gregmitchell4619
@gregmitchell4619 3 жыл бұрын
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.
@cluek9780
@cluek9780 2 жыл бұрын
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?
@LarryPerkins78
@LarryPerkins78 Жыл бұрын
Thank you!
@profthomason
@profthomason 5 жыл бұрын
Works for me
@damonens9478
@damonens9478 3 жыл бұрын
So did your reverse have any movement before u looked into this? I have a bit of reverse but hardly anything
@Orefamilylawncare
@Orefamilylawncare 2 жыл бұрын
So you didn't have any indication of failure prior to it losing reverse? It just went out while plowing?
@travisst.laurent1561
@travisst.laurent1561 3 жыл бұрын
You’re a gawd damn genius
@WHATTHEFIX
@WHATTHEFIX 3 жыл бұрын
LOL! Mama always say I were the smert one!
@samflores8067
@samflores8067 2 жыл бұрын
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 ???
@TonyC93
@TonyC93 2 ай бұрын
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.
@mudassarabbas8853
@mudassarabbas8853 3 жыл бұрын
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
@robertvanderbaan3722
@robertvanderbaan3722 4 ай бұрын
I am not welder. Would adding shim stock work as well?
@yodecahedron9915
@yodecahedron9915 Жыл бұрын
Do you know if this fix is the same for a 4L60E
@GodswillIme-fg1eu
@GodswillIme-fg1eu 5 ай бұрын
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
@gusakovd
@gusakovd 5 жыл бұрын
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!
@WHATTHEFIX
@WHATTHEFIX 5 жыл бұрын
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)
@gusakovd
@gusakovd 5 жыл бұрын
WHAT THE FIX thanx bro! Suppose to dismount the trans and see whats inside
@velascojidon390
@velascojidon390 4 жыл бұрын
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 ?
@pmotorsports8276
@pmotorsports8276 3 жыл бұрын
Astro has a different design transmission.
@benbrumbley181
@benbrumbley181 12 күн бұрын
Transmission still working?
@glenjackson8367
@glenjackson8367 4 жыл бұрын
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
@holoflat1662
@holoflat1662 4 жыл бұрын
Oil level too high?
@guitarguy4334
@guitarguy4334 2 жыл бұрын
Nuetral safety switch or linkage needs adj
@sparkynm156
@sparkynm156 9 ай бұрын
Did you have a whine at all ? And did you ever figure out your issue and fix ?
@richardcontreras1192
@richardcontreras1192 3 жыл бұрын
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
@WHATTHEFIX
@WHATTHEFIX 3 жыл бұрын
Dunno... wish I had better answer
@tmfo125
@tmfo125 3 жыл бұрын
Rear band giving up was the pop maybe. Should be able to see it with the valve body dropped.
@garythesquidsquid7779
@garythesquidsquid7779 5 жыл бұрын
When i lost my reverse today, i seem to have also lost my third gear and over drive. Any guesses?
@WHATTHEFIX
@WHATTHEFIX 5 жыл бұрын
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!
@garythesquidsquid7779
@garythesquidsquid7779 5 жыл бұрын
@@WHATTHEFIX thanks mister!
@garrycook8080
@garrycook8080 5 жыл бұрын
@@garythesquidsquid7779 direct clutch bad
@rodpalm6398
@rodpalm6398 4 жыл бұрын
@@WHATTHEFIX Wrong answer, you have no clue what you are doing.
@geikiegames1397
@geikiegames1397 Жыл бұрын
Did the truck move once you put new fluid in? And did it smell burnt when you drained it??
@WHATTHEFIX
@WHATTHEFIX Жыл бұрын
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.
@mazermajestic
@mazermajestic Жыл бұрын
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
@WHATTHEFIX
@WHATTHEFIX Жыл бұрын
It is a temp fix... will get you by for a while until the band gives up and snaps
@southtexas4777
@southtexas4777 4 жыл бұрын
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.
@WHATTHEFIX
@WHATTHEFIX 4 жыл бұрын
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!
@southtexas4777
@southtexas4777 4 жыл бұрын
.200 is the same I think. Most measure 4.780 and you need 4.980 +/-. .200 = .20.. 20 thousandths is .020
@mem8304
@mem8304 3 жыл бұрын
south texas like hell you don’t
@southtexas4777
@southtexas4777 3 жыл бұрын
You don't, plain and simple
@tritonalaska4269
@tritonalaska4269 3 жыл бұрын
.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
@sextoyrepairman1621
@sextoyrepairman1621 Жыл бұрын
Isnt there a band adjustment on the side of the transmission
@WHATTHEFIX
@WHATTHEFIX Жыл бұрын
maybe in 1950 LOL
@dtaylor224
@dtaylor224 Жыл бұрын
My 2013 Ford transit connect xl drive forward in reverse wtf...😢 any suggestions 🤔
@WHATTHEFIX
@WHATTHEFIX Жыл бұрын
Too new for my old brain LOL So much electronics
@travisschneider3203
@travisschneider3203 5 жыл бұрын
You don’t need to drop the valve body to change the rear band servo.
@WHATTHEFIX
@WHATTHEFIX 5 жыл бұрын
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!
@mem8304
@mem8304 3 жыл бұрын
travis schneider like hell you don’t
@adamkorekach9936
@adamkorekach9936 Жыл бұрын
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.
@LokiSadie
@LokiSadie Жыл бұрын
Could this happen with the automatic GM 6L80?
@WHATTHEFIX
@WHATTHEFIX Жыл бұрын
I assume so. But I know nothing of the banding inside those
@alecn64
@alecn64 3 жыл бұрын
Woukd this possibly work for a 4l60 e
@WHATTHEFIX
@WHATTHEFIX 3 жыл бұрын
Yes. The 60 is of the same design as far a I know.
@alecn64
@alecn64 3 жыл бұрын
Cool awesome im gonna try to do it to the 60 and see wat happens
@zachrance9171
@zachrance9171 Жыл бұрын
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.
@WHATTHEFIX
@WHATTHEFIX Жыл бұрын
I didnt notice. Most likely shop cat lol
@user-ke2go2xu1r
@user-ke2go2xu1r 10 ай бұрын
My mk4 automatic TRANSMISSION not reverse
@mudassarabbas8853
@mudassarabbas8853 3 жыл бұрын
My car hd2500
@RobertoRamirez-iv2jz
@RobertoRamirez-iv2jz 2 жыл бұрын
My reverse feels like it locks then I give it a lot of grass then it releases
@pinjplays5420
@pinjplays5420 2 жыл бұрын
Same
@sparkynm156
@sparkynm156 9 ай бұрын
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 ?
@josephcarroll6356
@josephcarroll6356 2 жыл бұрын
2:13 there's your problem. You gotta dog in your transmission.
@The.Irritations
@The.Irritations 2 жыл бұрын
Where is the rest of the video?
@WHATTHEFIX
@WHATTHEFIX 2 жыл бұрын
In subsequent video on my channel.
@konstantinNeo
@konstantinNeo 3 жыл бұрын
This "simulating a longer rod" businnes, can get outta hand pretty quickly ya know.
@therightway268
@therightway268 Жыл бұрын
It Can reversed cannot go forward
@heman85515
@heman85515 3 жыл бұрын
.1875
@selesitilafalesui890
@selesitilafalesui890 Жыл бұрын
What about 4runner 1995
@WHATTHEFIX
@WHATTHEFIX Жыл бұрын
No Idea. Never worked on one
@smid2550
@smid2550 Жыл бұрын
3/16" is .18750
@WHATTHEFIX
@WHATTHEFIX Жыл бұрын
Ya... some things that come out of my mouth are not what are in my head lol
@thomascantu3545
@thomascantu3545 3 жыл бұрын
What if I get a new pin? I've see them for around $10.
@WHATTHEFIX
@WHATTHEFIX 3 жыл бұрын
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'
@thomascantu3545
@thomascantu3545 3 жыл бұрын
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.
@sparkynm156
@sparkynm156 9 ай бұрын
@@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..
@FranciscoRodriguez-sz8ol
@FranciscoRodriguez-sz8ol Жыл бұрын
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 😩
@WHATTHEFIX
@WHATTHEFIX Жыл бұрын
Im not picking up what you are saying...
@90xSEEM
@90xSEEM 5 жыл бұрын
I’m loss of R and 2 Fix Transmission in taho 4L60e wat you’re prablem??
@WHATTHEFIX
@WHATTHEFIX 5 жыл бұрын
Was the R band for me. Trans is out now for total rebuild
@pussnboots1000
@pussnboots1000 Жыл бұрын
well that definitely wasnt a free fix. you have a video proof of you putting it back together and driving it?
@WHATTHEFIX
@WHATTHEFIX Жыл бұрын
Next vid on my channel. Im not sure where I spent money. Electricity?
@zerozero1944
@zerozero1944 3 жыл бұрын
Any update vid?
@joshuaackerman6968
@joshuaackerman6968 3 жыл бұрын
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.
@leebarnes655
@leebarnes655 2 жыл бұрын
@@joshuaackerman6968 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/
@ernestgcruz6781
@ernestgcruz6781 Жыл бұрын
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.
@themedic4050
@themedic4050 4 жыл бұрын
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.
@WHATTHEFIX
@WHATTHEFIX 4 жыл бұрын
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
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