FORT WORTH (CBSDFW.COM/AP) – General Motors showed off an all-new version of the Chevrolet Silverado pickup truck at an event at the Texas Motor Speedway in Fort Worth on Saturday.

The company released pictures of the rounded new truck with thin LED headlamps and a blacked-out front grille.

GM gave few details ahead of its official debut at the Detroit Auto Show in January.

chevroletsilverado General Motors Shows New Chevrolet Silverado Pickup Truck At Texas Event

(credit: General Motors)

The company said that the 2019 Silverado will be lighter than the current model with a high-strength steel bed. It will have a mixed-metal body — that likely means a combination of aluminum and steel. The truck also will get new engines and transmissions, possibly including a diesel.

The changes should help GM gain ground on the aluminum-clad Ford F-Series, the top-selling vehicle in the United States. Fiat Chrysler also will show a new Ram pickup at the show.

(© Copyright 2017 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)