John Middlebrook, GM vice president of global sales, service and marketing, will retire July 1. Middlebrook, 67, will be replaced on June 1 by Jonathan Browning, GM Europe vice president of sales, marketing and aftersales.
"John Middlebrook has made tremendous contributions to GM in a variety of roles over the past 49 years," GM CEO Rick Wagoner said in a statement. "He is well-known and highly respected and admired throughout the industry as a true sales and marketing professional."
Browning, 48, will come to Detroit from GM's European operations, where he has been central to GM's expansion into global markets.
Browning will be replaced on June 1 by Brent Dewar, 53, GM's current North American vice president of field sales, service and parts operations.
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