2024 Gmc Sierra 2024 Duramax. The 2024 gmc sierra at4x will receive the new 3.0l i6 lz0 turbodiesel duramax as its standard engine, with the current 6.2l v8 l87 gasoline engine as optional. * and a 5 years/100,000 miles.
I’ve even had it do an active regen while hauling/towing,. Looking at a new 2024 at4 and just curious if the 10 speed transmission helps with mpg.