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4L80E Tear Down & Common Problems
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- Опубліковано 16 сер 2024
- In this video, Curt goes through how to tear down a 4L80E. Then he talks about the common problems found in this transmission and the solutions to those problems. Most issues are seen when the transmission is overheating or is starved for oil. This can happen in early models because of the positioning of the coolant lines. Some drums can develop ring grooves from Teflon rings which would lose lubrication and cause the planetary to burn up. Finally, sometimes the clutches on the drum will slip and cause grooves in the drum which can cause the clutches to only apply partially or not apply at all.
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Thank you for showing me that I need save up and pay someone to do it.
Don't do it
good transmissions , i got 341k miles on my 05 silverado
Such a simple trans, I thought they would be a complicated mess because they are fairly big. I think when I get my swap underway I'll pull apart the trans too.
you sir are a great instructor, thanks for sharing your knowledge
Yo make it look easy when you know your stuff... thank you for sharing...
Curts been doing this for a long time. Thanks for the view!
Bentley put a 4L80e in their Arnage range (98 to 2002) biggest issue they had was it would lose reverse ! !
sounds like my 4L60E (2004 Chevy Trailblazer) is better.
Curt is an awesome teacher :)
Wonder if my rebuilder replaced the cooked or damaged drums with Chinese ones or just used the same ones or used OE ones who knows scard to ask.
Mr. Curt Thank You for all the videos would never dare diving into one until now. I do have a question 4l80e put in reverse engine idles fine put in forward gear Engine dies like lock-up is engaging any fixes i could try before having to pull it out be great if there is any thank you
Sounds like your tcc valve may be stuck or worn out. Hope that helps!
If I had my dad's old shop tools (the special pliers and presses) I'd dig into the one I'm pulling
What about the solenoid leak... so I guess they are not as strong and good as he said.. my burn in daily driver no houling heavy stuff..
Yes Sir I need your help. I have 1994 motorhome with a 4L80E transmission. Can I replace it with a better version or i need to replace with the same year. Thanks for your cooperation great job.
You could make it work if you're willing to modify the cooler lines
Phenomenal knowledge
I have a 2004 Sierra 2500HD with this trans. I pull an 8600lb 5th wheel. The truck had 200K miles when I got it. Attempted a trip to Texas yesterday with the camper when the trans got hot. We limped it back home, allowing it to cool before starting again. Never had issues before yesterday. What could cause this to suddenly happen?
I would recommend to perform a Full DIAG of the vehicle. May have a Electrical issue when it goes into Limp mode. Pull all codes of the vehicle and make sure they are cleared out.
What intro song is that i wish it kept going that was kick ass man 🤘🤘🤘
I just recently put a 4l80e on my Silverado 1500 , has a 5.3 motor. Well the transmission I got was used and now truck won't move forward at all.... reverse still works (weak) but obviously the transmission was shot, question is, what caused this? Torque converter? What does a repair kit for this transmission cost? I should mention truck came out of the shop working but it definitely didn't feel right, felt restraint or sluggish, dragging ass if u will, and I knew something wasn't right because my truck makes fairly decent power, so that's how it started, then 3 weeks later just got worse and now it wont move forward.....use to have a 4l60 on it before and truck was quick and would even dig out like crazy from a complete stop....truck has a tune, long tube headers, cold intake, msd wires, 411 gears in differential..... with the 4l80 it wouldn't even spin the tires, ever. Help
Check that the shop re-pinned and flashed for a 4l80. The overdrive sprag could also cause the issues if it's starting to fail.
@@MonsterTransmission ok... when they swapped the transmission to the 4l80, I know they ran some wires and pinned it to the computer I believe ( 23 and 24 I think) then they programmed some sort of file or tune so that it would work and shift with the 4l80... but like I said, truck felt sluggish when I picked it up at the shop, all the guys did at the shop was the upgrade and install, since the transmission was used and i didn't even buy it off of them, they take no responsibility if the transmission gas existing issues....makes sense.
.. so I came to the conclusion that the transmission was bad or about to give out... when I drove it off the shop it shifted all gears right, but it felt like my torque was weak when I punched the gas.... and my truck is fast. My truck use to dig hard with the 4l60 before, even spun the tires a little shifting into 2nd... with this 4l80, all I got acceleration and engine noise but my take off was sluggish... no dig at all... my take on the matter is that 1st gear was slipping all along that's why truck had no strong take off ... who knows what other gears were bad, or clutches or whatever the case is, all I know is that now, it wont move forward... just reverse and even my reverse is a little weak.... so I'm wondering on a repair kit... or maybe just get another 4l80 altogether.... and my other question is if I should rebuild or rebuy a stock one... would a stock one do for my set up? No performance cam or turbos or nothing in the truck, yet. Just a powerful 5.3 with a performance tune, long tube headers, cold intake, 4.11 gears in differential and MSD wiring cables.... my previous 4l60 transmission that broke had all the perks though, Corvette servo, shift kit and some racing performance kit all through out, ( thought I'd mention that as well ) .... and that transmission broke due to my driveshaft busting, it broke the back end of my tranny along with it..... so yeah, stuck here not knowing what to do... rebuild or rebuy another 4l80? Will stock do? And whats a ballpark figure on a stock rebuild kit and a performance rebuild kit
..thanks
@@josevenegas2319 It sounds like the forward clutches are burnt. More than likely needs and new forward drum and input shaft. That's a pretty common wear issue.
On a 4 l 80 transmission how do the planet holders where the gear is how does that pin go into hold the gear
Yes, great video. You seem to know your trans.
1989 Chevrolet Silverado single cab 2wd swapped with a 2006 6.0L/4l80e transmission tune shop said it was stuck in second gear any idea what it could be or is the transmission done for ?
Sounds like it is stuck in limp mode. I would check whatever controller or Harness you are using is wired up correctly and there is no pinched wires or bad ground. Pull codes if possible and clear any possible codes what comes back please send to us and we will help Diagnose it for you. Thank you for choosing Monster Transmissions.
Was that transmission still assembled on a 06 Chevy express 2500 (4.8l)
Yes a 4L80E stock will be in an 06 Chevy Express
I got the p0894 on my 2006 2500hd do you know what is a common cause of it or the cause of all
Bad range or brake switch can cause unit to slip/overheat.
@@MonsterTransmission because when it has the check engine with the code, i deleted with the obd2 scanner and it work back to normal
@@MonsterTransmission and thank you for the time replaying brother !!
I have 4L85E in my motor home. what is the difference? Also how can you tell the difference between the two?
The 4L85E will have a top Bolt Hole at 12 O' Clock position and the cooler line fittings will be apart from each other not next to each other like the early models. Thank you for choosing Monster Transmissions.
I have 1995 GMC K2500 suburban 7.4l. It goes into limp mode allot going up hills or stopping in traffic. I assume overheating. What are my next steps to diagnose? Thanks for any help.
I would perform a full DIAG on the vehicle to see if you may have any electrical issues and also what codes come up with the Transmission you could have bad solenoids a bad harness or could be internal next step would be to perform a Full Vehicle DIAG to see what it could be. Thank you for choosing with Monster Transmissions.
By watching this, i am thinking i should throw away my 1993 4L80e and get a 1998 and newer.
Hi ☺️ I I'm from Iraq special operations forces..i have humvee wht problem with transmission lamb..can you help me
We have online help on our website, you can also email us at marketing@monstertrans.com or give us a call at +1 800-708-0087
Do your rebuilds correct the other issues Besides the cooling line location?
Yes, we upgrade common known failure points to prevent the usual downfalls of the units.
Now how to correct the issues video?
I have an 03 Silverado with 2wd 4l80e, reverse went out but drive and all others work fine is this a simple fix or in depth fix?
Revers band is most likely worn out, you would need to take the transmission completely apart to replace parts, we recommend to get it rebuilt.
Mr Curt, my 4l80e kicks out of 4th gear but I have a elm327 hooked up to an app on my phone and can get real time info and codes. And when I reset my check engine light and code with my app, even while driving, the transmission gets 4th gear back and doesn't have an issue until about 3-5 min later and jumps out of 4th gear again if I go up the slightest hill. But right as I reset the codes, there could be a huge hill in front of me and the transmission will hold in 4th, all the way up.
It sometimes even happens while driving at the same speed I have been, no hills or dips, it just kicks out of 4th.
Is it the torque converter?
Thanks
You're Welcome!
My 4l80e on 2000 GMC C3500 has a leaking plug, when it fills with oil i lose the overdrive and have jerky shift from 1 to 2nd and 2nd to 3rd, when i blow out the plug with air compressor it drives great! Has anyone experienced it? is it the wicking of oil through the plug or is it the outer o-ring seal?
I have the same issue with my. 93 chevy 2500, shifts hard from 1 to 2 sometimes then 3 to 4 soon as it warms up it feels like it down shifts and I lose overdrive.
Sounds like the Clip around the Plug/Connector is broken and this will allow for fluid to get into the Plug/connector I would suggest taking a look at your harness and make sure it is not damaged. So drop the Pan and pull Harness Plug from the Case to check if the plastic clips are broken off around it.
It should use a 4L60E 1pc Case.
Thanks homie
Welcome holmes!
Nice vdo thanks a lot!!!
Thanks José, glad we could help!
need estimate for impala transmission please
need transmission repair estimate repair time and u r location please
Yeah i bouggt a built 4l80e 3200 stall now my 1stgear isnt engaging taking off in second has manual valve body?? Cant get yall on the phone?
Could you provide me with the Cam specs the Total Lift and Duration at .50 so I can ensure you have the correct Stall Speed? Thank you for choosing Monster Transmissions.
Can you wire a 93 4l80 4x2 to a 95 4l80 4x2
Yes they should both be Cooler Lines Together 4L80E and will have the same electronics.
www.monstertransmission.com/4L80E-Mega-Monster-In-A-Box_c_5800.html
Thank you gonna try it out today I'll keep you posted
My 1-2 seems former than normal, think I need a new trans.
Check the fluid levels and if there are any codes with a transmission scanner. Give us a call to trouble shoot other possible issues 800-708-0087
92 chevy g30 van has 1 and it doesnt shift.its electrical.where is the problem
I would recommend a Full vehicle DIAG and check the electrical system. Pull the codes and see if you have any codes for a bad Solenoid or possibly a bad a harness. Thank you for choosing Monster Transmissions.
I am never doing that! Way too many pieces to misplace.
So what u are saying is there junk.
They’re
LOL! Depends on the application and build.
You skipped too many steps.
We have a more in depth video on the tear down and rebuild coming out soon, this is just to give some ideas of the common problems someone might experience with a 4L80E Automatic transmission. Thanks for the feedback!
Makes me wanna buy a Tesla 😂
Thanks
Glad you enjoyed it!