The new 10 speed Allison

[a5150nut]

What did they do? Add more gears or converter range to 4 gears?

[cabletech]

It's a new transmission. It was jointly developed by GM & Allison and made by GM and not based on any current Allison transmission.

Jay

https://ir.allisontransmission.com/news-releases/news-release-details/chevrolet-offer-10-speed-fully-automatic-allison-branded