Since China calls the shots for just about everything nowadays, maybe they didn't want Chevy being confused with their rip off auto company Chery.
http://en.wikipedia.org/wiki/Chery_Automobile
Chery is known for
copying foreign designs, including
General Motors' Korean subsidiary GM Daewoo Auto & Technology's
Daewoo Matiz city car (sold as the
Chery QQ) and
Daewoo Magnus mid-size sedan (sold as the Chery Eastar), along with the emblem appearing derived from the
Infiniti emblem. Chery attempted to negotiate local Chinese production licenses of those vehicles with bankrupt Daewoo Motors prior to General Motors' purchase of the bankrupt automaker's assets in 2002,
[7] but the negotiations were never closed.
[8] Nevertheless, Chery proceeded with the production of these former Daewoo vehicles without a license, triggering General Motors to sue Chery for infringement in December 2004, citing "extreme similarities".
[9][10]
General Motors has been unable to press its case against Chery in the
Chinese courts, despite pressure from the Chinese government. In November 2005, GM opted to drop its case to preserve its other interests in China and maintain good will with the government. However, GM reserves rights to sue Chery again if it attempts to bring the vehicles in question to European and North American markets. The affected vehicles are the Matiz clone and derivatives (QQ3, QQ6 and A1) and the Magnus clone and derivatives (Eastar, V4, B12, and B22). The IP rights issue has become such a concern that DCX is rumored to have contacted GM for possible licensing of GM Daewoo vehicle IP on the behalf of Chery
[11] after it signed a 25-year cooperation and exclusive distribution agreement with Chery in early 2007.