General Motors recently announced plans to spend $483 million and add 483 jobs building current- and next-generation Ecotec four-cylinder engines at its powertrain complex in Spring Hill, Tenn. The spending plan includes $23 million that would add 30 hourly jobs to increase production beginning in the first quarter of 2011 of the current-generation Ecotec engine used in popular . products like the Chevrolet Equinox, Buick LaCrosse and GMC Terrain.
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