NextGen Drivetrain 10L1000 Valve Body Upgrades

[AndrewF]

Has anyone gone about installing parts from Next Gen Drivetrain for the 10L1000?  They make both an upgraded valve body assembly as well as a valve body upgrade kit.  I gave them a call, they stated these parts are plug and play with both the gas and diesel 10L1000's and don't involve any sort of tuning.  I'm thinking they could help with getting ahead of potential valve body issues that have been popping up?

 

Only caveat is that they aren't OEM approved so they can void warranty (assuming the dealer realizes these parts have been installed) so this will probably hold many of us back for now, but could be an option for those who's warranty has expired.  Parts aren't cheap ($800 for the upgrade kit, $3500 for the complete valve body), but everything with these trucks is expensive and ideally would help prevent more significant transmission damage/issues.

 

https://nextgendiesel.com/collections/10l1000-transmissions-transmission-parts/products/project-carbon®-10l1000-high-pressure-diy-valve-body-upgrade-kit?variant=43582624333997

 

https://nextgendiesel.com/collections/10l1000-transmissions-transmission-parts/products/10l1000-project-carbon™-high-performance-valve-body-oil-pump

 

 

Edited August 28, 2024 by AndrewF

[LocoS1]

I haven't installed one yet as , but I have see a few others have great success on the nextgen install kit on reddit:

 

https://www.reddit.com/r/Duramax/comments/1cy1wx1/2023_duramax_transmission_valve_body_issue/

[LocoS1]

Looks like Fab Rats had great success with the NextGen kit 

 

[Drainplug_fan]

I just watched the FabRats video and had to be impressed with how he did this while his left arm was in a cast.

 

He made it look pretty easy, although he is on a lift and not on his back. I really hope this fixes the issues for him.

[mjm-1957]

General Motors should be embarrassed and ashamed of what they are producing lately. Why should anyone spend the kind of money that they are charging for these trucks and then have to spend close to a thousand more without any labor just to fix what should never have been released to the public in the first place. I have been a line mechanic with GM since 1978 and have never seen such garbage being put out. We have trucks lined up waiting for valve bodies that people cant use and are still making payments on. We cant keep up with the engine failures and oil leaks and transmission problems that are never ending. Just had to vent a little.

[quinsy]

took my 2022 AT4 3500 in for an engine oil leak and a torque converter leak on July 11...  i was told truck was ready for pick up July 16.. picked up truck and transmission was clunking and not at all the same smooth transmission i brought in... 2 days later told it needed a valve body now.. the dealer called me on September 25,, truck is ready, picked it up on Sept 27 drove 2 or 3 kms before it started acting up again. then went into limp mode. drove back to dealer. they called later that day saying new valve body was faulty.. they then said i would have to wait  the same as the first time the valve body failed as they can't put me on a priority list..I wish we had the Lemon Law in Canada..