Undated (AP) _ Details of GM plant closings announced Thursday:

-Wilmington, Del., assembly plant with 3,500 employees. The plant, which produces Chevrolet Corsica and Beretta models, will cease operations after the 1996 model year.

-Kalamazoo, Mich., metal fabricating plant with 3,100 employees. The plant produces deck lids, doors, quarter panels and floor pans for a variety of GM vehicles. It will phase out operations after the conclusion of the 1995 model year.

-Syracuse, N.Y., (Inland Fisher Guide Division) component plant with 1,300 employees. The plant produces a variety of plastic interior and exterior parts. It will cease operations in the fourth quarter of 1993 and the majority of its work will be consolidated with other Automotive Components Group facilities.

-Euclid, Ohio, (Inland Fisher Guide Division) component plant with 550 employees. The plant produces seat cushion trim covers. It will cease operations as soon as possible, but no later than mid-1994, and its work will be consolidated at another Automotive Components Group operation.

-Trenton, N.J., suburb of Ewing, (Inland Fisher Guide Division) component plant with 2,050 employees. The plant produces door handles, seat adjusters, body moldings and encapsulated glass. It will cease operations in the fourth quarter of 1993 and the majority of its production will be consolidated at other Automotive Components Group facilities.

-Livonia, Mich., (Delco Chassis Division) component plant with 2,000 employees. The plant produces modular strut assemblies, impact and face beams, and leaf and coil springs. It will cease operations in the fourth quarter of 1993 when GM discontinues these lines of business.

-Sioux City, Iowa, (AC Rochester Division) component plant with 200 employees. The plant produces throttle body injection systems. Work there will be consolidated at GM's AC Rochester facility in Rochester, N.Y., by the first half of 1993. Sioux City employees will have the option to transfer to Rochester.

Possible closings:

-Flint, Mich., truck assembly plant with 4,450 employees. The Flint plant will continue to assemble Chevrolet and GMC Truck full-size vans through the 1995 model year, after which time no future product has been assigned to the plant. The next generation Chevrolet and GMC Truck full-size vans will be built at a yet-to-be-determined GM facility; if Flint is not chosen, it would close.

-St. Catharines, Ontario, rear axle operations, employing about 800 people, will be put up for sale. If a buyer cannot be found, the operations will be consolidated with other Automotive Components Group rear axle facilities in the United States by late 1993. In addition, the previously announced closing of the St. Catharines casting plant (2,150 employees) will be moved up from the spring of 1995 to the fall of 1994.