DETROIT – General Motors announced it has suspended production at its Shreveport Assembly plant in Louisiana for the week of March 21 due to a shortage of parts from Japan. According to the Detroit News, the Shreveport Assembly plant is where the company manufactures Chevy Colorado and GMC Canyon trucks. The company produced 50,000 trucks at that plant in 2010. The automaker said it plans to get the plant up and running and soon as possible. GM stated that it has enough vehicles to meet customer demand. All other GM plants are operating normally.