2023 Silverado 3.0L Duramax Transmission/Engine problems

[Texas_Mike713]

I have a 2023 Silverado 3.0L with 25,000 miles. The truck had been shuttling back and forth, driving in traffic, but had been intermittent recently. Over the weekend my truck when cruising at 45mph hesitated to shift to 5 or 6th gear, dropped gears and went into limp mode. When I finally limped back home and had to back in once, putting it in reverse, the truck came to a sudden stop, engaged the parking brake, and said, "Unable to complete that action." I have code P0747 twice and P0700. The check engine light is on, service transmission has been displayed, and oil & transmission fluid are now leaking. I got the engine notification as well. How cooked is the transmission/engine? 

[newdude]

23 minutes ago, Texas_Mike713 said:

I have a 2023 Silverado 3.0L with 25,000 miles. The truck had been shuttling back and forth, driving in traffic, but had been intermittent recently. Over the weekend my truck when cruising at 45mph hesitated to shift to 5 or 6th gear, dropped gears and went into limp mode. When I finally limped back home and had to back in once, putting it in reverse, the truck came to a sudden stop, engaged the parking brake, and said, "Unable to complete that action." I have code P0747 twice and P0700. The check engine light is on, service transmission has been displayed, and oil & transmission fluid are now leaking. I got the engine notification as well. How cooked is the transmission/engine? 

 

 

Needs the spacer plate fix done most likely.  Or worst case a new valve body if the spacer plate doesn't fix it.  

 

25-NA-255 is the TSB for it.  https://www.duramaxnews.com/post/breaking-gm-issues-new-valve-body-repair-for-p0747-on-10-speed-10l80-10l90?srsltid=AfmBOopI3xFZeJTWj0tDpmBQTMPSkhz-UHRZ_wy0DxPkySOmI74Pz5wI

[GMCustomerService]

Thank you for sharing this experience with your Silverado’s transmission concern, Texas_Mike713. Your safety on the road is our number one priority, and we would like to offer support wherever we can as we pursue the resolution of your concern alongside your local Chevrolet dealer. When you can, please visit: https://s.chevy.com/support-request and fill out the support request form with the pertinent details so we may explore the best path of assistance.

Edited June 4 by GMCustomerService