2024 Gmc At4 Hd Colors. We put together a quick overview of the color options for the new gmc sierra 2500 hd so you can decide which one you like the best.  — the sierra hd also has six new exterior color choices (for extra money, of.

 — the 2024 gmc sierra hd debuts exterior updates, an interior overhaul, and new powertrain options, along with significant changes to the exterior paint palette, with six new colors offered.  — check out this breakdown of all available 2024 gmc sierra hd interior colorways and seat materials.