4l60e TCC vs TCC PWM
Thread Starter
TECH Fanatic
Joined: Jan 2022
Posts: 1,362
Likes: 256
4l60e TCC vs TCC PWM Which of these would be more likely to cause a shudder in OD at 45 or so mph, the TCC or the TCC PWM? Or could it be both or neither? If a transmission set for a long time and one of these solenoids were partial clogged, which one could cause a shudder?
TECH Apprentice
Joined: Aug 2018
Posts: 383
Likes: 108
I don't think so, on you last question, but not for sure. If the PWM solenoid was bad, it will likely set a code (?)
TECH Resident
Joined: Mar 2012
Posts: 860
Likes: 404
From: Texas
What is the vehicle/ application ?
It's my understanding that the PWM function is to smooth out TCC operating and eliminate shudder.
Based on that, I'd say it's TCC applying, but there are many things that could affect that.
It's my understanding that the PWM function is to smooth out TCC operating and eliminate shudder.
Based on that, I'd say it's TCC applying, but there are many things that could affect that.
Thread Starter
TECH Fanatic
Joined: Jan 2022
Posts: 1,362
Likes: 256
(which primary naptha) and then changed the fluid again by sucking it out of the dipstick. It shifts well now but it shudders on occasion under light steady throttle at slow speeds. I don’t think the transmission or TC are going bad due to being “beaten on,” but from varnish and such from sitting. I need to change the filter but I’m thinking about replacing the TCC solenoid and maybe the PWM while the pan is off.
TECH Resident
Joined: Mar 2012
Posts: 860
Likes: 404
From: Texas
First: Do not use any snake-oil transmission "Treatments."
Second, most of that sh*t is still in there if you only ducked the fluid out of the pan. That only gets 3-4 quarts IF you're lucky.
Change it again, and change the filter.
Last, I'm pretty sure that PWM wasn't used until at least '04, but I might be wrong, and it would depend on the application.
Ex: the transmission I used in my swap said PWM on it, but the valve body was not PWM compliant. (Out of an '04 Tahoe.)
Second, most of that sh*t is still in there if you only ducked the fluid out of the pan. That only gets 3-4 quarts IF you're lucky.
Change it again, and change the filter.
Last, I'm pretty sure that PWM wasn't used until at least '04, but I might be wrong, and it would depend on the application.
Ex: the transmission I used in my swap said PWM on it, but the valve body was not PWM compliant. (Out of an '04 Tahoe.)
Thread Starter
TECH Fanatic
Joined: Jan 2022
Posts: 1,362
Likes: 256
First: Do not use any snake-oil transmission "Treatments."
Second, most of that sh*t is still in there if you only ducked the fluid out of the pan. That only gets 3-4 quarts IF you're lucky.
Change it again, and change the filter.
Last, I'm pretty sure that PWM wasn't used until at least '04, but I might be wrong, and it would depend on the application.
Ex: the transmission I used in my swap said PWM on it, but the valve body was not PWM compliant. (Out of an '04 Tahoe.)
Second, most of that sh*t is still in there if you only ducked the fluid out of the pan. That only gets 3-4 quarts IF you're lucky.
Change it again, and change the filter.
Last, I'm pretty sure that PWM wasn't used until at least '04, but I might be wrong, and it would depend on the application.
Ex: the transmission I used in my swap said PWM on it, but the valve body was not PWM compliant. (Out of an '04 Tahoe.)
Maybe someone knows if the 4l60e from ‘00 has both a TCC and a TCC PWM solenoid. I googled diagrams and they showed both.
LS1Tech Sponsor
Joined: Mar 2023
Posts: 1,821
Likes: 1,159
From: BERWICK PA
The only additive i would ever use and that worked for ths was LUBEGUARD SHUDDER FIX its juts a friction modifier as it may be the fluid you used is not apropriate .
__________________
Frank formerly of Performabuilt, Now just me, What can I build for you today? Call or message me. Click sig pic for my facebook
Frank formerly of Performabuilt, Now just me, What can I build for you today? Call or message me. Click sig pic for my facebook
Trending Topics
LS1Tech Sponsor
Joined: Mar 2023
Posts: 1,821
Likes: 1,159
From: BERWICK PA
As for a mechaincal short of clutch delaminating I would its not a pwm of vavle body issues as even if leaking unless the converter clutch has already become super glazed burned , the converter clutch was desined to slip and not shudder and you would likley have a component slipping code if the slip was excessive.
I would try lubegaurd shudder fix . I unussualy dont promote snake oils but it did work in my escort stationwagon when i dd trans all was great except a rumble shudder on TCC apply . I took a chance and bought a bottle its worked ever since, Also if a new converter it is possible wrong converter clutch material.
I would try lubegaurd shudder fix . I unussualy dont promote snake oils but it did work in my escort stationwagon when i dd trans all was great except a rumble shudder on TCC apply . I took a chance and bought a bottle its worked ever since, Also if a new converter it is possible wrong converter clutch material.
__________________
Frank formerly of Performabuilt, Now just me, What can I build for you today? Call or message me. Click sig pic for my facebook
Frank formerly of Performabuilt, Now just me, What can I build for you today? Call or message me. Click sig pic for my facebook
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo Thread Starter
TECH Fanatic
Joined: Jan 2022
Posts: 1,362
Likes: 256
Last edited by Y2K_Frenzy; Mar 22, 2024 at 04:56 PM.
LS1Tech Sponsor
Joined: Mar 2023
Posts: 1,821
Likes: 1,159
From: BERWICK PA
I used Lubegard prior to the Seafoam. I used both the 10 oz bottle of red as well as the shudder fix with 4qts of fresh fluid DEX VI. At that time it had other shifting issues other than the shudder. It helped a little but it didn’t help as much as the seafoam transtune. After the seafoam the shifting was better almost immediately. After putting a few miles on with the seafoam in it I did three “suck and fills and for good measure I added a bottle of Lubegard Platinum. What lead me/leads me to believe that the transmission issues are from “gunk” that was formed due to sitting for an extended period is that every issue the car has is from sitting. So I figured I’d gamble on using seafoam to clean the valves to possibly make an improvement, or to kill an already dying transmission. Well, it made an improvement and it hasn’t killed it yet. Since it shifted better after a cleaner was ran through it, I’m willing to gamble the price of a solenoid or two to see if it’ll cure my ills. It doesn’t slip and the shifts under acceleration are good and crisp, but not too crisp, but it’ll act up when it’s lugging around town in OD.
__________________
Frank formerly of Performabuilt, Now just me, What can I build for you today? Call or message me. Click sig pic for my facebook
Frank formerly of Performabuilt, Now just me, What can I build for you today? Call or message me. Click sig pic for my facebook
Thread Starter
TECH Fanatic
Joined: Jan 2022
Posts: 1,362
Likes: 256
LS1Tech Sponsor
Joined: Mar 2023
Posts: 1,821
Likes: 1,159
From: BERWICK PA
If that does not do it I would suggest changing the converter imo.
__________________
Frank formerly of Performabuilt, Now just me, What can I build for you today? Call or message me. Click sig pic for my facebook
Frank formerly of Performabuilt, Now just me, What can I build for you today? Call or message me. Click sig pic for my facebook
Thread Starter
TECH Fanatic
Joined: Jan 2022
Posts: 1,362
Likes: 256
It took several bottles of PEA laden injector cleaners to fix a surging idle issue. This thing was a sitter (outside I think) and it has sitter issues I’m afraid. Other online reads say that the TCC solenoid can cause shudder at lockup. Is this not the case? Can nothing in the valve body (valves, solenoids) cause TC shudder?
Last edited by Y2K_Frenzy; Mar 22, 2024 at 08:12 PM.
LS1Tech Sponsor
Joined: Mar 2023
Posts: 1,821
Likes: 1,159
From: BERWICK PA
Well , You said it sat for a long period, Clutch could have degraded, moisture damage , Auto Trans unless properly prepared really do not like being left sitting for long periods
__________________
Frank formerly of Performabuilt, Now just me, What can I build for you today? Call or message me. Click sig pic for my facebook
Frank formerly of Performabuilt, Now just me, What can I build for you today? Call or message me. Click sig pic for my facebook
Thread Starter
TECH Fanatic
Joined: Jan 2022
Posts: 1,362
Likes: 256
Are there metal screens in the solenoids? Or are they just an open hole? Either way, what happens if those get clogged?
LS1Tech Sponsor
Joined: Mar 2023
Posts: 1,821
Likes: 1,159
From: BERWICK PA
yes the stock TCC and PWM do have screens, But you are speaking of a shudder, This should not happen even if the converter is slipping even excessively as they are desined to slip without shuddering.
__________________
Frank formerly of Performabuilt, Now just me, What can I build for you today? Call or message me. Click sig pic for my facebook
Frank formerly of Performabuilt, Now just me, What can I build for you today? Call or message me. Click sig pic for my facebook
Thread Starter
TECH Fanatic
Joined: Jan 2022
Posts: 1,362
Likes: 256
So you’re saying that poor line pressure can’t or wouldn’t cause a shudder?