The state-owned Korea Development Bank said Thursday that it would not pump any more money into the Korean unit of General Motors unless the U.S. automaker discloses the cost structure of GM Korea. “To receive fresh funds, GM has to come clean with its cost structure, among other things, and set up a viable plan to put the Korean operation back on track,” Lee Dong-gull, chairman and CEO of the bank, said in a news conference. “If so, we will give serious consideration to injecting ‘new money’ into the company.” Due diligence on GM Korea has not started because the U.S. automaker has refused to submit what it calls “very sensitive data” to the Korean government, Lee said. “We are still waiting for submission of the documents,” the chairman said. “We have notified GM that the planned due diligence should be satisfactory enough for us to grasp GM’s broad plans to revive its Korean business in the future.” Working-level negotiations between the Seoul government and General Motors are under way to start the due diligence, the chairman said, adding the review of accounts is aimed at “figuring out the cost structure and expense structure of GM Korea to judge whether the carmaker can operate if the U.S. auto giant’s turnaround plan is carried out.”