8-speed Archives - Transmission Digest
LUBEGARD® GM 6 & 8-Speed Shudder Solution 

General Motors has published multiple technical service bulletins pertaining to torque converter clutch shudder issues in their 8-Speed transmissions. This problem currently affects 11 different models across 3 different OEM brands for the model years between 2015 and 2022. After implementing several fluid revisions, GM’s latest solution (TSB 18-NA-355) is lengthy, complicated, and expensive. It

LUBEGARD® GM 6 & 8-Speed Shudder Solution 

General Motors has published multiple technical service bulletins pertaining to torque converter clutch shudder issues in their 8-speed transmissions. This problem currently affects 11 different models across 3 different OEM brands for the model years between 2015 and 2019. After implementing several fluid revisions, GM’s latest solution (TSB 18-NA-355) is lengthy, complicated and expensive. It

Sponsored video: GM eight-speed torque converter shudder solution

The full text of this sponsored video is below: Welcome to the GM eight speed torque converter shudder solution by LubeGard. General Motors has issued multiple technical service bulletins on torque converter clutch shudder in the eight-speed 8L45 and 8L90 transmissions. This problem affects over four million vehicles. That’s 11 different models across three different

Lubegard-video
The World’s First FWD 8-Speed Transmission

In this February Tech Talk article, Wayne Colonna breaks down the AWF8F35, developed by the Aisin Group.

february Tech Talk-aisin-8-speed
‘Rebuilt’ salvage-yard transmission, hmmm …

We had a local general repair shop bring us a 2014 Jeep Grand Cherokee 3.6L V-6 engine equipped with a ZF 8-speed (845RE) transmission; they had just installed a “rebuilt” transmission that was sourced from a salvage yard. The customer’s stated concern was, “The place that built the transmission just said it needed to be programmed.” Needless to say, we knew that this was going to be an adventure.