Earnings before interest and taxes for GM's international operations, which include China, fell to $334 million from $516 million in the previous three months.
Mr. Obama, on his first trip to Asia which will also includeChina and South Korea, said his administration would work out the issues that are currently blocking the U.S.-South Korea trade pact.
In addition to medium and heavy-duty trucks and buses which are clearly used by businesses, commercial vehicle numbers in Chinainclude sales of light trucks and mini trucks and buses, many of which are used by individuals and small businesses.