GM Revival Slows Down

General Motors Co. posted a lackluster first quarter, showing some improved profitability but weakness overseas and continued losses to rival Ford Motor Co. in North America, its strongest market.

GM earned $1 billion in the first three months, down 69% from the $3.2 billion profit a year ago that benefited from one-time gains. Revenue climbed 4.3% to $37.76 billion.