General Motors Co. will resume production at its pickup truck plant in Louisiana next week as well as its engine plant in upstate New York, saying only it had the parts it needed to support output.

A GM spokeswoman said the automaker had “the parts we need” but declined to say where the parts were coming from or whether its parts shortages from Japan had been resolved.

Last week, GM said it would temporarily idle its Shreveport Assembly plant, where it builds the Chevrolet Colorado and GMC Canyon, due to a shortage of parts from Japan.

GM said this week it suspended production at its Tonawanda engine plant in Buffalo, N.Y., that supported the Shreveport plant.