SHANGHAI, CHINA - General Motors is seeking to raise its stake in its commercial vehicle venture with SAIC Motor , China's biggest automaker, China Business News said on Wednesday.

GM wants to increase its 34% stake in SAIC-GM-Wuling, a three way tie-up between the U.S. automaker, SAIC and Liuzhou Wuling Automobile, the newspaper said, citing SAIC chairman Hu Maoyuan.

Hu, addressing an industry forum, did not elaborate on the additional stake GM was asking for. Foreign holdings of Chinese auto joint manufactures is capped at 50%.

GM's China spokesman was not immediately available for comment.

SAIC owns 50.1% of the venture, which makes vans and small trucks under the Wuling brand. The brand accounts for roughly half of GM's China vehicle sales.

GM also has a car venture with SAIC in Shanghai making Buick, Chevrolet and other GM car brands.

(Reporting by Fang Yan, Editing by Jacqueline Wong)