FLINT, Mich. -- General Motors Co.  announced today that it is adding a third shift and 750 jobs at its  Flint, Mich., assembly plant in response to healthy demand for heavy  duty versions of its Chevrolet Silverado and the GMC Sierra pickups.
“Our  heavy duty pickups are especially hot,” Mark Reuss, GM's president of  North America, told hundreds of workers gathered on the plant floor.
Reuss  told reporters that GM is “having a hard time supplying” heavy duty and  crew-cab trucks, and that growing demand in recent months helped  trigger the decision to produce more.
Re-engineered versions of  the Chevy Silverado and GMC Sierra heavy duties were released last  summer. The Silverado HD was named the 2011 Motor Trend Truck of the  Year.
“We're smart enough to know when we have a hit on our hands,” Reuss said.
GM  is rolling out several new small cars, which executives say is key to  GM's ability to attract new buyers, especially if fuel prices rise. But  sales of high-margin trucks “remain crucial to our success,” Reuss said.
Construction uptick aids demand
Reuss  attributed some of the increased sales to improved housing starts and  construction activity. The heavy duty trucks are a favorite of  contractors and trades workers. 
GM said it expects to start the  additional shift by the third quarter, with new employees starting to  arrive from other GM plants in the second quarter. 

