2024 Sierra Hd At4x. With such great success with the. 2024 gmc sierra hd at4x aev edition climbs mountains edmunds,  — i have a 2024 2500 diesel at4x aev edition and a week into ownership the.

2024 gmc sierra hd at4x: The at4x trim builds on the foundation of the refreshed 2024 sierra hd.