The Sierra 2500 HD in its AT4X off-road package with the American Expedition Vehicles add-ons is a beautiful rig for getting out into the hinter. Especially with the Duramax diesel and excellent Alison transmission pairing.
Video Review: 2024 GMC Sierra HD AT4X AEV
Especially with the Duramax diesel and excellent Alison transmission pairing.
![](https://www.carnewscafe.com/wp-content/uploads/2023/12/2024-GMC-Sierra-HD-AT4X.jpeg)
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