New DCT design (late '23+)

[Neils]

Highlights

• Updated towards the end of '23 model year (does not mention what end '23 means)
• Die 3 trans identified by 4 fasteners ((right image), Die 2 version has 6 fasteners
• Migrating to new design will require additional parts (does not say which ones or how many)
• Die 1 pans (stamped-15 bolts), Die 2 pans (cast-19 bolts), can have Die 2 pan on Die 1 case (for repairs of Die 1 trans)
• Canister filter remains unchanged
• For track use, Z51-equipped Stingrays with Die 3 cases no longer need the additional 2 quarts (1.89 L) of transmission fluid.

M1L Dual Clutch Transmission Case Design Update – TechLink

gm-techlink.com

 

[Rruuff Day]

Highlights

• Updated towards the end of '23 model year (does not mention what end '23 means)
• Die 3 trans identified by 4 fasteners ((right image), Die 2 version has 6 fasteners
• Migrating to new design will require additional parts (does not say which ones or how many)
• Die 1 pans (stamped-15 bolts), Die 2 pans (cast-19 bolts), can have Die 2 pan on Die 1 case (for repairs of Die 1 trans)
• Canister filter remains unchanged
• For track use, Z51-equipped Stingrays with Die 3 cases no longer need the additional 2 quarts (1.89 L) of transmission fluid.

M1L Dual Clutch Transmission Case Design Update – TechLink

gm-techlink.com

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This post has been edited. Please remember that direct links to other Forums are not permitted.

 

[DenisC8]

thanks for posting, this is a great example of a great thread

 

[1st Vette]

Highlights

• Updated towards the end of '23 model year (does not mention what end '23 means)
• Die 3 trans identified by 4 fasteners ((right image), Die 2 version has 6 fasteners
• Migrating to new design will require additional parts (does not say which ones or how many)
• Die 1 pans (stamped-15 bolts), Die 2 pans (cast-19 bolts), can have Die 2 pan on Die 1 case (for repairs of Die 1 trans)
• Canister filter remains unchanged
• For track use, Z51-equipped Stingrays with Die 3 cases no longer need the additional 2 quarts (1.89 L) of transmission fluid.

M1L Dual Clutch Transmission Case Design Update – TechLink

gm-techlink.com

View attachment 114912
View attachment 114913View attachment 114916

Do you know if these revised units are being installed in 2024 cars yet ?

 

[DenisC8]

Do you know if these revised units are being installed in 2024 cars yet ?

yes 100% of 2024s

 

[Neils]

This post has been edited. Please remember that direct links to other Forums are not permitted.

thanks Rruuff for the edit !!

 

[1st Vette]

yes 100% of 2024s

Well that’s a bit of a comfort, I think, lol . The TechLink article doesn’t go into much detail as to why this has been done, hopefully it’s something that will improve reliability. The removal of the requirement for an additional two quarts of fluid for track use is intriguing. Obviously a smaller case by the look of it.

 

[Murray20c8]

According to one of the Corvette execs (Tadge maybe, I forget) the internals have not been changed.

 

[DenisC8]

According to one of the Corvette execs (Tadge maybe, I forget) the internals have not been changed.

Correct

 

[Murray20c8]

Correct

There is however, if the rumour is correct, some cooling changes as well as a different sump pickup because of the pan difference.

 

[Rruuff Day]

thanks Rruuff for the edit !!

No problem Neils. Actually members are welcome to copy and paste articles from other forums in place of direct links. We ask that a credit is given to the OP.

 

[JCWP]

https://gmauthority.com/blog/2023/10/c8-corvette-stingray-transmission-gets-case-design-update/

 

[HappyCamper]

Apparently they have added baffles/baffling around the fluid pickup to reduce slosh during high G maneuvers to prevent the possibility of starvation..
This effects 2023 builds on or after July 14, 2023. This VIN 1G1YB3D40P5137263 and onward