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Old 09-28-2022, 10:34 AM   #379
ctrlz


 
Drives: 2017 2SS, 50th pkg, M6, MRC, NPP
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Quote:
Originally Posted by BWoods View Post
I’m thinking about selling the Camaro…
The shuddering has come back after a triple flush and a TC replacement. The car has only 49k miles on it. Has anyone else experienced this?
This is something that has always interested me. If the problem is hygroscopic fluid causing corrosion and uneven wear of clutch plates, why should it be limited to just the clutches in the torque converter? There are multiple clutches within the transmission itself:
https://atracom.blob.core.windows.ne...troduction.pdf
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Old 09-28-2022, 08:28 PM   #380
arpad_m


 
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Quote:
Originally Posted by ctrlz View Post
This is something that has always interested me. If the problem is hygroscopic fluid causing corrosion and uneven wear of clutch plates, why should it be limited to just the clutches in the torque converter? There are multiple clutches within the transmission itself:
https://atracom.blob.core.windows.ne...troduction.pdf
My conjecture is that the C1-C5 clutches in the transmission are never allowed to slip and sufficient(ly high) pressure is always applied to them, unlike the torque converter clutch that is programmed to allow some slip by default. The shudder, after all, is the TC clutch engaging and disengaging several times in quick succession once the friction coefficient of the fluid drops below a threshold due to the absorbed moisture.

Zeroing out the slip tables in the transmission tune helps with the shudder, and this is probably why.
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2018 Camaro 2SS — G7E MX0 NPP F55 IO6
735 rwhp | 665 rwtq

Magnuson TVS 2300 80mm pulley | Kooks 1 7/8" LT headers | JRE smooth idle terminator cam | LT4 FS & injectors | TSP forged pistons & rods
JMS PowerMAX | DSX flex fuel kit | Roto-Fab CAI | Soler 95mm LT5 TB | 1LE wheels | 1LE brakes | BMR rear cradle lockout | JRE custom tune

1100 - 1/30/18 | 2000 - 1/31/18
3000 - 2/06/18 TPW 2/26/18
3400 - 2/19/18 | 3800 - 2/26/18
4300 - 2/27/18 | 4B00 - 3/01/18
4200 - 3/05/18 | 4800 - 3/14/18
5000 - 3/16/18 | 6000 - 3/19/18
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Old 09-29-2022, 01:16 PM   #381
ctrlz


 
Drives: 2017 2SS, 50th pkg, M6, MRC, NPP
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Quote:
Originally Posted by arpad_m View Post
My conjecture is that the C1-C5 clutches in the transmission are never allowed to slip and sufficient(ly high) pressure is always applied to them, unlike the torque converter clutch that is programmed to allow some slip by default.
So, where does Bwoods look next? Differential?
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Old 09-29-2022, 01:20 PM   #382
arpad_m


 
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Drives: 2018 Camaro 2SS A8
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Quote:
Originally Posted by ctrlz View Post
So, where does Bwoods look next? Differential?
Well, I am neither a mechanic nor a gm employee, my only response would be to try a revised stock or even a different aftermarket torque converter on his own dime, which I'm not going to suggest to anyone. Sad situation indeed.
__________________
2018 Camaro 2SS — G7E MX0 NPP F55 IO6
735 rwhp | 665 rwtq

Magnuson TVS 2300 80mm pulley | Kooks 1 7/8" LT headers | JRE smooth idle terminator cam | LT4 FS & injectors | TSP forged pistons & rods
JMS PowerMAX | DSX flex fuel kit | Roto-Fab CAI | Soler 95mm LT5 TB | 1LE wheels | 1LE brakes | BMR rear cradle lockout | JRE custom tune

1100 - 1/30/18 | 2000 - 1/31/18
3000 - 2/06/18 TPW 2/26/18
3400 - 2/19/18 | 3800 - 2/26/18
4300 - 2/27/18 | 4B00 - 3/01/18
4200 - 3/05/18 | 4800 - 3/14/18
5000 - 3/16/18 | 6000 - 3/19/18
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