New 2024 Gmc Sierra Hd. The 2024 sierra hd will be available in 2500hd and 3500hd models. General motors officially unveiled the fully refreshed 2024 gmc sierra hd last october, revealing an updated exterior, an overhauled interior, a new trim level lineup, and.

The 2024 gmc sierra hd features two new trims designed to boost the truck’s appeal (and sticker price): Gmc’s heavy duty sierra pickups are getting big upgrades for 2024.