General Motors isn't the only company laying off workers because of the devastating strikes at two plants in Flint, Michigan.

Other parts suppliers are having to close their doors.

• Lear Corp., whose seats go into Chevrolet Luminas and Buick Regals, has had to idle 2,000 workers. And other parts manufacturers are beginning to lay off workers, too.
• Cooper Industries, which supplies lighting fixtures for Corvettes and Firebirds, says the strike is costing it about $1 million a month in lost sales. Cooper trimmed its second- quarter earnings expectations, due in part to the strike.

"The ripple effect on GM suppliers is profound," said John Casesa, an auto analyst for Schroders. "GM represents anywhere between 15 and 20 percent of the sales of most big suppliers. So these are lost sales and lost profits. And you'll see it in their second-quarter results."

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