Duramax At4 2024 2024. The duramax engine will continue to be assembled at gm’s flint engine operations plant in michigan, and will be available on the 2024 gmc sierra 1500 at4x. Initially introduced on select trims, the lzo duramax diesel is now the base.
For 2024 2500 std bed specs page in order guide shows: With my l5p’s, it seems to regen on average every tank to 1.5 tanks, depending on how it’s driven.