2025 Gmc Sierra 2500hd At4x Aev Edition. — gmc says the 2025 sierra hd at4x and at4x aev edition will be at dealers later this year, in the fall. — there’s a lot to like about driving the sierra 2500 at4x aev edition on pavement.
— the automaker has announced the redesigned 2025 gmc sierra 2500 will be offered with two new trims, the at4x and at4x aev edition. — my at4x aev test truck’s capabilities are lower than that, with a tow rating of 18,400 pounds due partly to the extra accessories added by american expedition.