2025 Gmc Sierra 2025 At4x Aev Edition. For the 2025 model year, gmc is simplifying its canyon lineup by making the at4x an option package under the at4 trim, rather than a distinct trim, while retaining features like. The 2024 gmc sierra 2500 hd at4x aev edition adds functional style from american expedition vehicles trove of aftermarket accessories in a production package.
Check out this 2025 gmc sierra 2500 at4x aev bison edition finished in onyx black with a new option for next year! But what’s the difference between these three?
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