What's New In The 2024 Gmc Sierra Hd. Gmc is unveiling the 2024 sierra heavy duty and the first ever 2024 sierra hd denali ultimate, redefining the power and capability of this dominating truck. 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.

Gmc on thursday unveiled the 2024 gmc sierra hd. See the complete list of 2024.