Duramax At4 2024 2024. — 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. — mpg for 2024 hd’s.
Hello all, i am looking getting into a new gmc with the duramax. This 2500 hd comes in onyx black on black with kalahari stitching perforated leather interior.