2024 Gmc At4 2024 Review. But when put to the microscope,. These days, gmc offers six vehicles with the at4 package:
2024 gmc sierra 1500 at4 in sterling metallic (a $495 color option) 2024 gmc sierra 1500 at4 specs. At 204 inches long, a 2024 acadia is nearly a foot longer than a 2023 model (and more than 3 inches longer than the 2007).