SPRING HILL, TN—GM has upgraded the lighting at its assembly plant here, expecting to save some $800,000 annually in electricity costs. MORE
GM Installs Energy-Efficient Lighting
![GM assembly](http://www.assemblymag.com/ext/resources/LatestHeadlines/gm422.jpg?1361892961)
SPRING HILL, TN—GM has upgraded the lighting at its assembly plant here, expecting to save some $800,000 annually in electricity costs. MORE
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