2025 Gmc At4x Hd Aev. I have a 2025 2500 diesel at4x aev edition and a week into ownership the tailgate started to open while parked. Learn more about the power of the 2025 sierra hd at4x aev edition on gmc life.

May 1, 2023 at 12:35pm et. Gmc’s new sierra heavy duty trucks just got bigger and bolder than ever.