GM April U.S. sales: up 6.4% to 183,997 vehicles. In the four remaining core brands (Chevy,...

|By:, SA News Editor
GM April U.S. sales: up 6.4% to 183,997 vehicles. In the four remaining core brands (Chevy, Cadillac, Buick, GMC), sales rose 19.7%; non-core brands, particularly Pontiac and Saturn, are starting to tail off the sales rolls.