Oklahoma City Assembly was a General Motors automobile factory in Oklahoma City, Oklahoma.
Construction on the 4,000,000-square-foot (370,000 m2) plant started in 1974, and it opened in 1979 to produce the newly designed X-body cars for the 1980 model year. After X-body cars came A-body cars (1985-1996) and then the plant began producing the Oldsmobile Cutlass through 1999 and Chevrolet Malibu through 2001. The company spent $700,000,000 to convert the plant from building the Chevrolet Malibu to building the all-new GMT360 SUVs (Chevrolet TrailBlazer, GMC Envoy, Oldsmobile Bravada) in 2001 for the 2002 model year. The plant was damaged by a tornado on May 8, 2003, but the company repaired the damage and returned the plant to operations just 53 days later.
The plant was not without its labor problems, including employee sabotage in vehicle production. University of Oklahoma football all-American Brian Bosworth recalled that co-workers on his 1985 summer job in the plant taught him how to hang screws, nuts and objects inside car bodies. The intent was to create rattles that would only be detected after a customer drove his new purchase home from a car dealership.
On December 6, 2005, the company alerted the United Auto Workers local 1999 that the plant would be closed in February 2006 as part of a cost-savings measure. The last vehicle produced at the plant, a white Chevrolet TrailBlazer EXT, rolled out on February 20, 2006. The plant was the first of 12 facilities the company planned to close by 2008 to match production with market demand. An estimated 521,400 GMT360 trucks were built at the Oklahoma City Assembly plant.