General Motors Co., which has come under media, congressional and courtroom scrutiny over fatalities caused by flawed ignition switches, is defending 104 death and injury lawsuits brought by those who blame accidents on defects in the company’s cars. Another 108 suits seeking class action status over fallen car prices are pending in federal and state courts, the largest U.S. automaker said Wednesday in a filing with the U.S. Securities and Exchange Commission. The company is also the target of investigations by state and federal agencies, it said.