2025 Gmc Sierra Color Options. The lineup of 2025 gmc sierra 1500 colors drops two exterior paints, including dynamic blue metallic (color code glt) and deep bronze metallic (color code gxn). Gmc utilizes eight different trim levels across the sierra and sierra hd platforms, and in this section, we’re covering the standout features of each and what separates them.

Cardinal red (g7c) downpour metallic (gxp) onyx black (gba) sterling metallic (gxd) summit white. Our 2025 gmc sierra 1500 trim comparison will help you decide.