GM names Phil Brook as vice president of marketing for Buick, GMC

General Motors has appointed Phil Brook, a regional director for Buick and GMC, to be the brands' new U.S. vice president of marketing.

GM: A 1.6% gain despite sliding pickups

Big gains for the Chevrolet Cruze and Buick Encore helped General Motors post a small U.S. sales increase for March, despite double-digit declines for 18 of the automaker's 43 nameplates.

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