2024 At4 2024 Duramax Specs. Going from zero to 60 mph in only 7.1 seconds is possible with 470 hp and a twisting force of. As for the powertrain options, the 2024 gmc sierra hd at4 will continue to feature the naturally aspirated 6.6l v8 l8t gasoline engine as standard.

You might get the first couple of oil changes free. 2024 gmc sierra 1500 at4.