2020 GMC/Chevrolet Diesel Engine
“The optional engine remains the largely carryover 6.6-liter Duramax V-8 turbo-diesel—445 horses and 910 lb-ft—but is now mated to a 10-speed version of the excellent Allison automatic gearbox, up fro...
Forum Discussion
Cummins12V98 wrote:
" Allison 1000 series that was developed within Allison and is sold by Allison. "
Is this a FACTUAL statement? "sold by "Allison" ???
The 1000 series is an actual Allison transmission and is part of their basic 1000-4000 highway series that includes related models with and without parking pawls at various power ratings. See: https://www.allisontransmission.com/transmissions/models/highway-series for their motorhome brochure using these models. The 1000 and related series are also found in other Allison vocational series brochures.
And versions of the 1000 and 2000 series will continue to be used in the new GM/Navi MD siblings instead of the 10 speed: http://gmauthority.com/blog/2018/10/allison-transmission-begins-production-ahead-of-chevy-medium-duty-truck-launch/
I don't expect you will see anything like this new 10 speed being sold through Allison unlike the current 1000 series which was developed by Allison and is supplied by them to numerous users.
