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...
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Cummins12V98 wrote:Funny only part of my post that had any replies. Not a word if they may lockout the starting gears or not.
How can anyone know first hand? I don't think the HD trucks with 10 speed trannies have hit the market just yet?
How can anyone know first hand? I don't think the HD trucks with 10 speed trannies have hit the market just yet?
