2024 Gmc Sierra 2024 Hd At4x Interior. In addition to the debut of the denali ultimate trim, the 2024 sierra hd will build upon gmc’s. Here's a list of official specs for the 2024 gmc sierra hd at4x & at4x aev edition.
Sierra hd at4x’s exclusive obsidian rush interior is designed to let you tackle tough terrain in comfort and style. The at4x trim gets an exclusive interior trim treatment called obsidian rush.