2024 Gmc Duramax Specs. The 2024 duramax appears to be even more bulletproof than the 2023. 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.

Gale starts by saying, “this is data that you won’t find on a spec sheet!” this new engine will be. This refined engine is perfect for work and play and offers increased power, towing.