2025 Gmc Sierra 2024 At4x Review. On a recent test drive, it was. The interiors of the 2024 gmc sierra 1500 at4x (shown) and the chevrolet silverado 1500 zr2 have a similar design, but there is more cushion and bling in the gmc.

2025 gmc sierra 1500 at4x vs. 2024 gmc sierra 1500 adds torquey duramax diesel.