The Detroit automaker lobbied Congress on numerous automotive issues including passenger safety, fuel economy, climate change, funding for hydrogen and other advanced technologies, according to disclosure form posted online Aug.10 by the Senate's public records office.

The Senate has already approved an energy bill that would make car makers reach 35 miles per gallon by 2020. automakers such GM have backed a less-stringent measure that that would require cars and trucks to meet efficiency rules of 32 to 35 mpg by 2022.

In addition to lawmakers, the company lobbied the departments of Energy, Commerce, Defense, State, Health and Human Services and Transportation, the National Economic Council, the White House budget office, the White House science and technology office, Environmental Protection Agency, Federal Communications Commission, the National Highway Traffic Safety Administration, the White House Council on Environmental Quality.

Under a federal law enacted in 1995, lobbyists are required to disclose activities that could influence members of the executive and legislative branches. They must register with Congress within 45 days of being hired or engaging in lobbying.