4L60E Shift Solenoid - Part 1 (Basic Operation)
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- Опубліковано 18 тра 2022
- Learn how the 4L60E Shift Solenoid works (1-2 shift solenoid)(Shift Solenoid A)(2-3 shift solenoid)(shift solenoid B). When there are problems with the shift solenoid, it leads to number of 4L60E problems;
1). 4L60E no 1st gear.
2). 4L60E no 2nd gear.
3). 4L60E no 3rd gear.
4). 4L60E no 4th gear.
4). Etc.
Before we can address the problem areas, it's important to first understand the basics of how a healthy system works. Buckle up!
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This channel is so underrated.
Good to hear from you, again!
Positive feedback is always appreciated.
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Best transmission training channel in the planet
If it feels right to you, please help me spread the word about this channel.
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❤
Thank you, Robert. I am a novice in this field, and I am trying to view all yours videos regarding the 4L60E to understand possible issues (hard shifts from 1-2) I've been having with my transmission. Your videos are very descriptive and informative. Thank you for your time and dedication.
A hard 1-2 up-shift can be caused by a number of things.
Example:
A broken accumulator spring will create this condition. The spring assists the accumulator piston, and is used to cushion the oil that's sent to the 2nd apply piston, on the 2-4 Servo. When the spring breaks, there's no longer a cushioning affect. The incoming 2nd gear oil slams the accumulator piston, and bang...
We've had a number of people asking about this exact same condition.
When time permits, we will dedicate a video to this topic.
Stay tuned!
very underrated channel. they animation and explanation is beyond perfect.
Great content and animations to understand and learn about automotive transmissions! Thank you
great content, as always. it helps to get a better understanding of anything you think you already knew or don't know, this just sets it in stone. also, I'm building a toyota u241 for a camry.. my first front wheel drive unit. these videos are based on a 4l60e, but generally many other transmissions function the same way.
Good to hear from you again.
Good deal!! I'm really glad to hear that... Thank you for the feedback.
First FWD trans rebuild...
Right on, that's exciting!
Yes, you are correct. Hydraulics are hydraulics.
Thank you for dropping me a line!
Awesome job as usual! So many transmission technicians can benefit from watching this video as well as your others one to fully grasp the basics. That being said, that Jeep equipped with a 4L60E must be an interesting setup. ;-)
Haha good eye! Currently trying to get a GM truck for video use.
The positive feedback is appreciated. Thanks for taking the time to drop me a line!
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1 Handed Transmission Rebuilder: (60-Sec Preview)
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Thank ypu for sharing your knowledge,this video is very helpfull for people who can learn in automotive industry,my honda city it has problem in 2-3 gear,i feel delay shifting with grinding sound,but other other gear it has smooth shifting.
Best explanation hands down. Thank you.
Glad it was helpful! You're very welcome.
Hello Robert sir…first of all thanxx..for these informative videos with good explanation in easy way!!!! With these instructions, we can solve the issues in all mechanisms…
Glad you enjoyed them, Gagandeep.
Knowledge is power.
Thanks for dropping me a line!
Thanks youtube .... i finally got my technical instructor ...your video presentations are outstanding and well understandable ...very very thanks... am a student of you from india
The positive feedback is very appreciated. I'm glad that you found the channel.
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Good information and knowledge thanks Robert As always I’ll try to spread the word to as many as possible
Thanks for checking it out, and for dropping me a line.
Your ongoing support is greatly appreciated!
Here's an easy way to share this particular video.
4L60E Shift Solenoid - Part 1 ***60-Sec PREVIEW***
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@@SouthpawAutoworks The way I’m sharing is when someone clicks the link I post they are immediately taken to your entire channel giving them access to every video you’ve ever made I’m sharing your channel not just the video 👍👍😎
Thank you for your videos
You're welcome.
thanks for the information, this last month I bought a jeep Cherokee with this 4L60E gearbox and I have noticed that the change between 1 and 2 is very hard. I will try to watch all your videos so I can solve my problem.
Were you able to get it fixed?
So interesting and so well explained... Thanks for this video!
My pleasure!
You really put in a whole lot of works, energy and skills in this channel more than you know, that not subscribing to your channel will be wicked.. you are simply amazing Sir. and the best suggestion youtube have ever made to me.. understanding this rocket science called automatic transmission for me in a broader paspective begins with you. I am greateful subscriber & loyal..
If my country currency is quarter close to yours, I will join your menbership just to extend my support futher. I am a full time mechanics and diagnostics expert in hvac system as much as engine electronics. Regardless I respect you a whole lot sir.. thanks
Talk about some very nice feedback. Thank you kindly.
This channel has been thousands of hours of blood, sweat, and gears. Thankfully, it's a labor of love.
Your support of this channel (paid or not) is very appreciated.
Thank you, so much, for taking the time to drop me a line.
Perfeita qualidade de imagens e conteúdo!
Se agradecen los comentarios positivos.
Gracias por dejar un comentario.
Awesome content and knowledge.
Thank you.
Thanks for sharing Rob!
Hey! Thanks for stopping by!
@@SouthpawAutoworks welcome bro.. all the best..
Very great sir thank you so much!
You're welcome. Thanks for dropping me a line!
PS - If it feels right to you, please help me spread the word about this channel.
1 Handed Transmission Rebuilder: (60-Sec Preview)
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Thanks a lot
You bet!
Good animation
Thank you.
This video better than my university professor's
Very informative & I jus subscribed.
My 1994 Chevy impala is suddenly banging into second gear ⚙️ Understanding & identification of the problem has left the black pearl parked. Drove her from N.Y to Texas flawlessly & now… she waits. Thank you for the awesome videos & stay free 🇺🇸
Right on! Welcome aboard!
Bummer.
Do you have a check engine light on?
Even if you don't have one illuminated, can you still pull/retrieve codes?
What codes are present?
Note: Please include all codes...transmission, engine, etc.
Valeu.
Pergunto: tem como testar um câmbio automático fora do carro.
Ou seja, fazer todos os testes antes de por o câmbio no carro.
Ok nice video may I ask you know what kind of automatic transmission is in the 1996 Mitsubishi Montero I been having a delay shift for the 2to3 gear
did you take apart everything yourself for the exploded parts views? if so bravo man im learning a lot from this channel
Yes. Right on! Glad to hear that.
Appreciate you dropping me a line.
Love your videos . How to know trans I got in my 2007 Escalade?
Which engine? 6.0L? 6.2L?
4-speed trans or 6-speed trans?
Hey Robert...great video...I have a question....but can we talk...
Would you happen to know why transmission take a while to shift in to drive when moved from Park to Drive? Specifically when cold( at the beginning at engine start)
Hello Robert , I must say Thank you kindly for sharing your knowledge with the world .. If by chance this question reaches you or anyone else in the comments the clips on the transmission solenoids are they color coded as to where they belong ?
Both of the shift solenoids (and their retaining clips) are identical. Hope this helps.
@@SouthpawAutoworks Wow ! Amazing !! You are the atomic Bomb !!! My new favorite person .THANK YOU!!!
I have an 05 Colorado with 4l60e shifts from 1-2 fine but when shifts to 3rd just revs but if you do it manually and skip 3rd and go to drive it hits 4th but runs like 4K rpm’s at 65mph
And if you put shifter in 3rd it will move around driveway fine
I have first and second gear only and I do have reverse
Awesome vids Robert! Pairing a 4l60e with a 5.3 in a ‘68 Camaro. Will it require anything different to operate correctly?
Right on!!
Are the engine & trans coming from the same donor vehicle? Or are they coming from different sources?
Will the engine remain EFI, or will it have a carb installed?
@@SouthpawAutoworks It will remain EFI. The stock truck computer is included but, the transmission is from a 2004.
Hi there thank inadvance igot a94 g20van I'm only getting 1st gear no 2nd and no speedometer reading help !
"no speedometer"
An inoperable speedo (believe it or not) will cause a no up-shift condition. The PCM (computer) needs to "see" the vehicle speed, in order to determine when to up-shift the transmission. If the speedo is not working, the PCM is unable to determine vehicle speed...and will not command the trans to shift.
"only getting 1st gear no 2nd"
Which position is the shifter in, in order for you to get these 2 gears?
For example:
Shifter in OD (or D) position? And trans automatically shifts from 1st to 2nd gear?
Or do you have to manually shift the trans? Shift from Park to D1, and then up-shift manually to D2?
No 3rd or 4th gear:
I have questions about this, too. But, I'll wait to respond to my other questions, first.
Hello!
Awesome content and knowledge.
We have a Mitsubishi Rosa bus with an aisin sieki automatic and are on the diagnosis train trying to figure out why in D it won’t take off (feels like it’s slipping) but when you select L it takes off but then won’t go up into any other gears when selecting anything other than L. Under the pan there are 4 solenoids, I believe 2 are for shift, 1 is lockup and the other is selection. Was going to replace all 4 or maybe the neutral switch? Or everything?
I'm not familiar with that transmission.
Generally speaking, when a trans is shifted into Manual Low, the trans will apply an extra clutch, and it will increase Line Pressure.
Extra Clutch:
This is used to do two things;
1). Increase clutch capacity. Trans can now withstand more torque/load, before transmission slips.
2). Create engine braking (deceleration).
Line Pressure:
By increasing line pressure, it enables that clutches to withstand more torque/load, before they slip (burn up).
What does the fluid look/smell like?
@@SouthpawAutoworks I believe they run them in Volvo and Jeep as well. It has had new oil and filter, the stuff that came out looked reasonably ok.
My 4runner doesn't change
And I've checked all the solenoid and it all functioning
What should I do now please help me out
I just rebuilt a 60e that has no 1st gear. Have dropped VB and verified solenoids, valve and spring move in bore; all good. What I did discover was the 3-4 shift valve/spring was in backwards. Not an expert in the fluid flow, but could this cause no 1st?
Good eye! It definitely will.
If you don't already know, the 1-2 signal oil pressure is used for both shift valves (1-2 & 3-4). It's a shared oil circuit.
With the 3-4 shift valve installed backwards, it will let the 1-2 Signal Oil pressure exhaust or bleed off...resulting in no signal oil pressure for the 1-2 shift valve or the 3-4 shift valve. This mimics 2nd gear. It's as though the 1-2 shift solenoid is off/de-energized (valve open, bleeding off signal oil pressure).
Great question, Steve.
Once again, good eye.
I have a 2003 yukon denali that has a po751 code. The transmission will shift fine when the fluid is cold. As soon as the transmission temps get to normal operating range I would lose all forward and reverse gear. I can then cut the vehicle off for about 5 mins and crank it to get back home. Could this possibly be the shift solenoid?
It does not sound like a shift solenoid failure. When they fail, you'll lose some gears, but not all of the gears.
Sounds like a plugged oil filter.
Is the trans experiencing other issues?
Was it experiencing weird shifting (slipping)?
Hello, my car automatic gearbox have a problems that is easy for forward driving develop the gear shifting however driving slow and take break after the vehicle didn't refused the gear shifting and engine jurk and shutdown? please advise
I'm having trouble understanding what was written.
Can you please re-write the comment? Thank you.
Can u please show an explain how it shifts to 3rd. I know the pcm turns both shift solenoids off but I’m concerned with how the fluid flows to shift it into 3rd. I explained on one of your other videos how my mechanic is saying the I have something blocking the flow of fluid not allowing my transmission to shift to 3rd. He says valve body looks good an that he needs to rebuild transmission to fix issue. I’m wondering where the blockage could possibly be to cause 1st and 2nd to work fine but not shift to 3rd or 4th. Scanner says everything electronically is working correctly and that the pcm is getting the command to shift but it’s not shifting. I feel like I should be able to fix issue without doing a complete rebuild. Please advise an do a video because I know a lot of others that are having the same issue. Clutch’s and all are good also. I’m also curious as to where dose the fluid go when it leaves the solenoid? An how dose the fluid actually make the transmission shift
I think I might know what's going on with your 4L60E. However, I would need to get more info from you before I could try to assist you. I responded (with questions) to your comment on the 4L60E Pump video. When time permits, fire back.
I would love to do a video on this topic.
I need help
Would like to see a video on the parking pawl and park lock. 96 4L60E gets stuck in park after the engine starts.
The parking mechanism on the 4L60E is pretty basic, and pretty hard to mess up (during a rebuild). If the trans was recently rebuilt, then there may be an issue with assembly (anything is possible). However, if the trans was not recently rebuilt, a few things are coming to mind.
1). A faulty shift interlock solenoid.
2). A faulty brake pedal switch.
3). Faulty wiring/connections for either the solenoid or the switch.
4). Switch could be misadjusted.
5). Blown fuse.
6). Etc.
The engineers at GM don't want the driver to be able to shift the trans from Park to Reverse/Drive, without the brake pedal depressed...for safety reasons. This is why the shift interlock solenoid is used.
The shift interlock solenoid prevents the shifter from moving out of Park until it "sees" that the brake pedal is being pushed down. So, not only does the interlock solenoid need to be in good shape, but the brake pedal switch must be in good working order, too.
The condition you've mentioned has me leaning towards the things listed above. Just sharing my thoughts, as a courtesy. Do what I do at your own risk.
Hope this helps.
Thanks a bunch for the reply.The transmission hasn't been rebuilt, about 240K miles on it. just decided to lock up out of the blue.
I've replaced all common parts I think.
New brake light switch
New ignition switch
New Shift Interlock Solenoid
New Neutral Safety switch
New Gear Shift Cable
New Column Shift Mechanism
New Position Pressure Switch
Dropped the pan 3 times and can pry on the park pawl to release it to be able to shift it by hand
but when I put it back together and and put fluid in it. and start it, it just gets stuck again.
I'm at a loss, determined its something internal, idk.
Quick question If i pull the linkage off the transmission, should I be able to shift it by hand from under the truck(it will not), could it be something internal?
I do need to adjust Shift Interlock Solenoid maybe that's it. PRND321 lines up when I shift it from the column.
I'll update if I figure it out lol, Thanks again.
Regarding your question...
Yes, you should be able to shift it by hand...as long as the shift lever is still bolted to the shift shaft (on the trans). There's a nut (13mm or 15mm) that secures this lever. With that lever bolted to the trans, you should be able to shift the trans by hand. If you've removed this lever, then it will be really hard to shift trans (because you have now have no leverage).
I'm assembling a 4L60E this week. If time permits, I'll see about shooting a short video of what I am talking about.
Thank you, it will not shift by hand after popping off the shifting cable, would be great to know what would cause the parking pawl to get stuck in park.
I'm having issues and have watched your videos on the 4l60e but can't find anything that might be the source of my issue.
I have a 94 4l60e out of a z71 Silverado and I am missing second gear only. Just recently rebuilt the 3-4 clutches and still had 2nd gear until 2 months later. Also I think this is a separate issue but 4th gear does not drop the motor into rpms it's supposed to, example: at 70mph I'm normally sitting at 2,000 rpms but now I sit at 2,500 rpms and this issue came up about two months into driving without 2nd gear. This is my only vehicle so I don't really have a choice but to continue driving. Any help is appreciated!!! I love this channel
It sounds like the 2-4 Band is not holding. It wraps around a drum. When the band is applied, it prevents the drum from rotating, which has positive effects on the planetary gear set.
The 2-4 Servo applies the band, in both 2nd gear and 4th gear.
The servo is equipped with two different pistons, that are two different diameters.
In 2nd gear, the 2nd apply piston pushes the servo towards the band, applying the band.
In 4th gear, the 2nd & 4th apply pistons work together to apply the band.
When repairing the trans, did you remove the 2-4 Servo from the side of the transmission case?
@@SouthpawAutoworks no I only went straight to the clutches as it was my only issue and I had no need or knowledge to break into it any deeper at that time
Do you have a video of 3 speed automatic transmission?
If you're asking for a video that shows how the hydraulics work on a 3-speed, no...not at this point in time.
If you're looking for a video about rebuilding a 3-speed automatic, then yes.
TH400 Build Series:
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Thank you..
I own a 2009 4.3 4wd. Silverado. Would the shift solenoid prevent my truck for ingageing the 3rd. and 4th gear?
When the trans attempts to up-shift from 2nd gear to 3rd gear, does the trans stay stuck in 2nd gear?
Or, does the trans feel like it went into Neutral? Engine revs up, but the truck "stops pulling?"
@@SouthpawAutoworks stops pulling,and tacts out.
Based off of the info you've provided...sounds like the 3-4 Clutch failed. This is a common failure point on this trans.
If the 3-4 Clutch is smoked, then the trans has to be opened up, and the clutches (among other things) need to be replaced.
A shift solenoid will not cause this particular problem. This issue can be caused by a number of issues within the trans (and even some stuff outside of the trans). I'll be putting together a video on this topic...when time permits.
I have a 2007 chevy 2500 won't shift into drive. Code reader says shift censore B. When under truck with pan down, is shift censore B on driver side or passenger side?
If your vehicle is equipped with a 4L60E, then Shift Solenoid B is gonna be located on the passenger side.
Industry standard is to replace both solenoids anyway. You'll thank yourself later. Test ohms with multimeter 20-30 ohms, ohms should climb fairly fast otherwise its lazy and bad. Also make sure they actuate with a 9 volt battery before installing. They are at rear of transmission btw.
Is the solenoid suppose to fit firm and not loose.
This one is right up your alley...
Q&A - GM 4L60E - Shift Solenoid Loose (Wobbles)
ua-cam.com/video/AXDtsZc_TTI/v-deo.html
Why can I get third and fourth gear
How does the shift down solenoid work
The shift solenoids are responsible for both up-shifts and down-shifts.
I removed my 1-2 accumulator but I can't get my EPC solenoid off. It's comes almost all the way out of the whole but not completely out. And my EPC solenoid is also called a pressure control solenoid on my 2007 H3 Hummer. Help please 🥺
Sounds like you should be good to go.
Note: EPC stands for Electronic Pressure Control.
As long as everything is removed, the solenoid should come right out of the bore.
Removal:
Remove 1-2 Accumulator (3 bolts)(10mm socket).
Disconnect electrical harness from EPC Solenoid. (two different styles of connector).
Remove EPC Solenoid bracket and bolt (8mm or 5/16" socket).
Pull EPC Solenoid from valve-body bore.
I've got a 4L60E handy. I will go take a look, and see what might hold up the removal of the solenoid...and fire back.
I took a look at the 4L60E I've got handy. The valve-body is currently removed from the transmission case. With the bolt/bracket removed, the solenoid comes right out, no problem.
Cocked in Bore:
After playing with it, I was able to make it stick in the bore. As the solenoid starts to come out the bore, it is possible to inadvertently lean the solenoid (left/right, up/down) and it'll get caught in the bore.
Might try wiggling while gently pulling.
Contaminated:
The end of the solenoid could be contaminated with debris. These parts are a tight fit, and debris can easily jamb things up. In that case, some brake parts cleaner could help flush out any debris. Might need to shoot a little lube in the bore (ATF, WD, etc), after flushing with brake cleaner.
Will an improper functioning solenoid cause transmission to not shift to 3rd gear? Have all gears excepts will not shift above 2nd gear.
Could be a couple things...
When the trans should shift from 2nd up to 3rd gear, what happens?
When it tries to up-shift does it feel like the trans goes into neutral (engine revs up, and vehicle coasts)?
Or...
Does it simply stay stuck in 2nd gear (engine RPMs climb as vehicle continues to accelerate)?
@@SouthpawAutoworksit just stays in 2nd and rpm’s climb. Although it downshifts back to 1st fine when you slow down. And all other gears work fine. Park, 1-2 , Rev, neutral.
Also, previously had rodent issues, chewed other wires. Thinking it could be a wire going to/from solenoid also.
Copy that.
Based off of your response (trans is not slipping....just won't up-shift), it sounds like it could be an issue with the solenoid (2-3 shift solenoid).
Note: The 2-3 Shift Solenoid is often times referred to as Shift Solenoid B.
It could be plugged (with debris).
Per the video, when the solenoid is energized (or turned ON), the solenoid's internal valve closes. This traps incoming oil, which builds oil pressure, which has a positive effect on the valve train.
When the solenoid is de-energized (or turned OFF), the internal valve opens, allowing the oil to escape/exhaust, which let's the oil pressure bleed off.
However, if the solenoid's internal hydraulic circuit is plugged, the oil pressure can't bleed off. So, even though the solenoid has been turned OFF, it still behaves as though it is ON.
Both shift solenoids have a "firing order".
2-3 Shift Solenoid:
1st gear: ON
2nd gear: ON
3rd gear: OFF
4th gear: OFF
In order for 3rd and 4th gear to occur, on the 4L60E, the solenoid must turn OFF electrically....and bleed oil pressure hydraulically.
Is this making any sense?
Let me know what questions you have.
Wow.... now I know 🤣🤣
There ya go.
Thanks for dropping me a line!