2024 Gmc Sierra At4x Mpg. The 2024 gmc sierra 2500 hd at4x aev edition adds functional style from american expedition vehicles trove of aftermarket accessories in a production package. Detailed specs and features for the 2024 gmc sierra 1500 including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders,.

Edmunds also has gmc sierra 1500 pricing, mpg, specs, pictures, safety features, consumer reviews. All mpg estimates are based on the methodology in effect when the vehicles were new (please see the fuel.