Transmission Digest

06/05/2026

Sonnax has provided the following guide on critical wear areas and vacuum test locations for the Ford 8F35 transmission. Technicians working on this transmission should find this guide helpful. Take a look:

Sonnax has provided the following guide on Ford 8F35 critical wear areas and vacuum test locations, the latest in our TASC Force Tips series.

06/04/2026

Here's a sneak peek 👀 at the stories that will make up the June issue of TD - on its way to mailboxes now!

05/26/2026

The newer a vehicle is, the more it challenges technicians with increasingly complex electronic integration, especially in transmission control systems. What once required mechanical linkage and simple hydraulic logic now depends heavily on sensors, modules and network communication.

Let’s take the recent case involving a low-mileage 2020 Buick Enclave equipped with the 9T65:

The newer a vehicle is, the more it challenges technicians with increasingly complex electronic integration, especially in transmission control systems. What once required mechanical linkage and simple hydraulic logic now depends heavily on sensors, modules and network communication. Let’s take th...

05/22/2026

Not too long ago, a call came in from John at A Affordable with a 2018 Volkswagen Golf 1.6L using the 09G transmission. The original transmission was so badly damaged that the shop opted to buy a cutout replacement from a vehicle that had 60,000 miles on it. A quick look at the inside revealed that this transmission had “like new” friction plates.

A new filter didn't fix it, and neither did a reman valve body. So what did?

Read on:

After backing the VW with the 09G off the lift, when they put it in drive, it slipped so badly it could only creep forward.

05/21/2026

For the May issue of TD, our cover story is our shop profile of Victoria Texas' Ramirez Transmission. Learn about the multi-generational history of the shop and what makes them stand out, including the extremely popular barbecue event for first responders they host every year, in our story:

When Al Trevino, manager of Ramirez Transmission, is asked what makes his shop stand out, he gives a simple two-word answer.

05/12/2026

Beating flat rate times often comes down to the minutes between tasks. Join us to learn practical shop habits that help reduce everyday slowdowns: https://bit.ly/4eImUZW

05/11/2026

Here's a sneak peek 👀 at the May issue of Transmission Digest. The magazine is in the mail on its way to readers now!

05/08/2026

A single errant interruption when working on an 8-speed could cause mistakes and days of stress trying to diagnose the subsequent problem. This article is about these 8L valve body missteps and hopefully will help you avoid them in the future:

This article is about GM 8L series valve body missteps, and hopefully will help you avoid them in the future.

05/07/2026

Join us for an update on the aftermarket in this free webinar. We will be discussing tighter consumer budgets, ongoing parts friction, and more. Register here: https://bit.ly/4uFbGdr

Not available at that time? Register anyway, and we will send you a link to the recording.

05/06/2026

When you divide the OSS RPM into the TSS RPM, you will get the overall gear ratio of the transmission; not so with ISSA and ISSB. Knowing what these sensors are reading helps make sense of their respective scan tool data.

Read more in our latest Technically Speaking article:

Knowing what the Ford 10R80 speed sensors are reading helps make sense of their respective scan tool data.