It’s musical chairs season at General Motors. The automaker has announced a rash of personnel changes in positions ranging from U.S. vice president to chief technology officer. Perhaps most interestingly, The General has appointed Mary Barra as the company’s new vice president of global product development. That’s quite a change from her previous post, where Berra served as the vice president of global human resources – a position she’s held since 2009. Berra officially takes the reins on February 1.

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That’s the same day that Linda Marshall will take up her new post as president of OnStar. Marshall is taking the place of Chris Preuss, who has left GM to work as a communications consultant. Marshall joined OnStar in 2010 as the company’s executive director of business strategy and development. Before that, she held senior executive positions with both Verizon Wireless and Sprint Nextel.

GM has also cooked up a new position to handle the wave of new technology flooding into vehicles. Vice Chairman Thomas G. Stephens has been chosen to be the company’s new global chief technology officer. Stephens will be responsible for investigating new “game-changing” technologies for the company’s products. He most recently served as the company’s vice chairman of global product operations.

On the marketing side of things, Chris Perry has replaced Joel Ewanick as the GM vice president of global marketing. The move allows Rick Scheidt to take over Perry’s old duties as the U.S. vice president of Chevrolet marketing. Ewanick, meanwhile, has moved to become the company’s global chief marketing officer.

Additionally, John Schwegman has moved from being the U.S. vice president of Buick-GMC marketing to just handling VP duties for GMC. Tony DiSalle will take over as VP of Buick marketing. DiSalle formerly held a position as the product and marketing director for the Chevrolet Volt.