The General Motors 8L family of transmissions has been in service since 2014, gradually replacing older 6L six-speed units across much of the company's lineup. The bigger 8L90 was the first GM 8-speed ...

If you've ever paid attention to the number of gears in your transmission, you might've noticed that those numbers have gone up over the years. Early automatic transmissions like the GM Hydra-Matic ...

GM and Allison Transmission will officially end their heavy-duty truck partnership in 2026, concluding a collaboration that began with the Duramax diesel era in 2001. By June 29, 2026, GM must remove ...