LOCAL - GM Post $4.8 B Net Loss

General Motors Corp. posted a fourth-quarter net loss of $4.8 billion on Thursday, a sea of red ink deeper than the most pessimistic Wall Street estimate, as costs for layoffs and plant closures soared. It was the fifth straight quarterly loss for the world's largest automaker -- amid high labor and raw materials costs, shrinking market share and sluggish sales of sport utility vehicles -- and brought its losses for all of 2005 to $8.6 billion. It was GM's first annual loss since 1992.