The Bush administration is working to release to General Motors Corp. a portion of the loans Congress approved for the auto industry, according to a person familiar with the matter, a move that could help ease the way for the company's discussed merger with Chrysler LLC.

GM and Chrysler's majority owner, Cerberus Capital Management LP, have been negotiating a complex deal in which GM would end up owning its smaller Detroit rival, but the parties have struggled to line up financing. The combined entity would need about $10...