2024 Gmc Sierra 2500hd At4x Aev Diesel Review. What powers the gmc sierra 2500hd at4x aev? 2024 gmc sierra 2500 awd crew cab at4x.

2024 gmc sierra 2500 awd crew cab at4x. Speaking of hauling prowess, gmc has upped the ante with its 6.6l duramax diesel for this model year, tuning it to belt out 470 horsepower.