TRNW-2: First 10L80 no reverse

[Dan Hogan]

Thanks Justin.  Looks like they are going to suffer the same issues as the Ford 10R80 as we are seeing filter screen delaminations as well.  Does GM have a service part number for the separator plates on these?

Thanks for the picture.


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Dan Hogan

Buster's Transmission Service

https://busterstransmission.com

704.847.5321

________________________________
From: trnw2-bounces at trnw.net <trnw2-bounces at trnw.net> on behalf of Justin Merritt via trnw2 <trnw2 at trnw.net>
Sent: Tuesday, October 7, 2025 3:59 PM
To: Technical Discussion Forum <trnw2 at trnw.net>
Subject: TRNW-2: First 10L80 no reverse

Hello all, I got my first 10L80 no reverse with 79k miles. I got the valve body off to study and found the blowed filter screen. I thought I would show you guys what I found, because it to me a few minutes to find. The pieces of screen in the pic are referenced to a 1/4 check ball. And the red circles are where I found the screen in the valve body and the stuck valve.

Justin
[cid:7432777b-eb0c-439e-b709-2d6f843df87a at namprd17.prod.outlook.com]
[cid:10caa370-3eb6-4509-ba5b-8b5fb5f44edb at namprd17.prod.outlook.com]


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