DUBLIN, VA. -- Executives plan to meet as soon as this week to discuss increasing the number of heavy-duty trucks manufactured by the Volvo GM Heavy Truck Corp., a corporate spokesman said last week.

"Part of the plan is perhaps that the plant will be expanded to increase its capacity," said Rudy Spik, a spokesman at Volvo White Truck Corp.'s Greensboro, N.C., headquarters.

Volvo GM Heavy Truck was formed in December when Volvo White Truck Corp. and the General Motors truck division announced plans to merge effective Jan. 1, 1988. Volvo GM truck plant in Dublin now produces 41 trucks a day by operating one shift of 1,000 workers five days a week, spokesman Sam Levy said.

Levy said he expected the company to make an announcement about future business plans this month, but declined to say what the announcement would be. But he said the market for heavy-duty trucks has been good.

"In the future, if business warrants an expansion, we'll do it," he said.

Spik said the possible expansion would likely be discussed this week in a meeting of corporate officials.

"Probably something will be approved, but I don't know what the scope will be," he said. He said he anticipated an announcement soon from the company.

Spik also said officials were looking at six sites to build another plant, but he didn't know where they were.

He declined to comment further.

A General Motors spokeswoman in Detroit, Kari Hulsey, said she could not comment on any pending plans.