CHICAGO, April 16 (Xinhua) -- General Motors (GM) on Tuesday unveiled its all-new Chevrolet Trailblazer compact SUV and Tracker small SUV at Auto Shanghai 2019.

As their global debut, the variants on display will strengthen the brand's presence in China, its second largest market, said the U.S. auto maker.

"Chevrolet has pivoted to a more youthful, fashionable, sporty and technological position, as its all-new products demonstrate," said Scott Lawson, general director of Chevrolet for SAIC-GM, a joint venture between GM and its Shanghai partner.

Cadillac, the luxury brand of GM, has brought its six-seat SUV XT6 to the Shanghai auto show, the first time in Asia. It will be the first localized global large luxury SUV in the market, said GM, and will be available later this year.

Buick, another GM brand, debuted its all-new Encore and Encore GX, two small/compact SUVs at the Shanghai auto show.

Buick also unveiled Velite 6, the brand's first all-electric vehicle, joining other global competitors in China's rapidly expanding new-energy vehicle market.

The Encore models and Velite 6 are part of Buick's plans to introduce eight new and refreshed products this year and more than 20 new and refreshed models between 2019 and 2023 in China.

GM and its joint ventures delivered 813,973 vehicles in China in the first quarter of 2019, down 17.45 percent from the same period last year.

Under the pressure of overall auto sales slowdown in China in 2018, the U.S. auto maker has planned a major model changeover in China this year, with a pledge to continuously improve the fuel efficiency of its vehicles and broadly apply its global technologies on models built and sold locally.