2024 Gmc 2024 Hd At4. Discuss all gmc 2500/3500 at4 modifications including engine, drivetrain, exterior, electronics, etc. General motors officially unveiled the fully refreshed 2024 gmc sierra hd last october, revealing an updated exterior, an overhauled interior, a new trim level.

Select a 2024 gmc sierra at4 and at4x hd to view feature and capability specs on the official site. Received my 2024 2500 at4 about a month ago after waiting 10 weeks or so.