2025 Gmc 2025 Hd At4x Release Date. View information about specs and features. As of the current information available, gmc has yet to disclose the release date for the 2025 gmc sierra officially.

The 2025 gmc sierra hd pickup is scheduled to begin production in late july 2024, according to the latest information obtained by gm authority. Adaptive cruise control with trailering assist, previously standard on the 2024 at4x and denali ultimate trim levels, now comes on the at4 and denali trims as well.