Seven-hundred fifty additional workers began punching the clock at Flint Assembly Sunday night, and by 11:06 p.m. the new line began and the first Chevrolet Silverado 3500 HD rolled off the line.
The announcement of a third shift this past January became a reality Sunday night.
The General Motors plant produces the GMC Sierra and Chevrolet Silverado pickups.
Additional demand for trucks is boosting production for the products.
Flint Assembly produces Motor Trend's 2011 Truck of the Year, the Silverado Heavy Duty.
Workers say morale is high with the new shift and demand for product.
