General Motors is investing $600 million in its Fairfax Assembly and Stamping Plant, which builds the Chevrolet Malibu and Buick LaCrosse. The automaker is using the investment to upgrade the plant, including adding a new 450,000 sq. ft. paint shop and installing a new stamping press. The automaker said vehicle production won’t be affected by the upgrades, and that the new paint shop will be housed in a new building.

The paint shop will have a smaller footprint and use up to 50% less energy per vehicle and will use Hyper Throw E-COAT, which will place more coating in vehicle cavities for improved corrosion protection. The upgraded stamping facility will get a new press that the automaker expects to enhance product quality and reduce waste.

GM said this is one of its largest plant investments ever and is part of its $2 billion commitment that the automaker has invested in the Fairfax plant in the last decade.